Ticket number 1
1. The most likely causes of steering wheel vibration while driving are:
2.increased imbalance of the wheels, play in the joints of the steering rods, increased clearances in the engagement of the worm and the roller
3.Lack of gaps in the engagement of the worm and roller
5.backlash in the steering rod joints
2. Purpose of the turbocharger used in the diesel power system?
3. Causes of blue exhaust fumes:
1.Oil enters the combustion chamber due to excess in the crankcase
2.the valve stem seals are worn out
3. engine overheating
4.worn out piston rings
5.Oil enters the combustion chamber due to excess in the crankcase, valve stem seals are worn out
4. The CHECK ENGINE indicator light indicates:
2.About the presence of a malfunction in the fuel injection system
5. Before checking the backlash, the steered wheels must be set to the position:
1.corresponding to movement in a straight line
2.when the wheels are turned all the way to the left
3.when the wheels are turned to failure in one of the extreme positions
Ticket number 2
1. Compression is the pressure in the cylinder at the end of the compression stroke characterizes:
1. technical condition (degree of wear) of the engine
2.motor durability
3.condition crankshaft and engine pistons
2. What does the transmission consist of?
1.clutch, gearbox, differential, wheels
2.clutch, gearbox, cardan transmission, one or more driving axles
3. gearbox, chassis
3. The space in the cylinder freed by the piston when it moves from TDC to BDC:
1. engine displacement
2.full volume of the cylinder
3.combustion chamber volume
4.the working volume of the cylinder
4. As the battery is discharged, the density of the electrolyte:
1.decreases
2.increases
5. What is the most common cylinder order in a four-cylinder engine?
1. 1-3-4-2
2. 1-2-3-4
3. 1-2-4-3
Ticket number 3
1. In what way the fuel supply channels of the pump are filled high pressure before launch diesel engine?
1.cranking crankshaft engine starting handle
2.the reciprocating movement of the fuel pump button
3.Cranking the engine crankshaft with a starter
2. Which valve in the cylinder head most often fails:
1.inlet
2.graduation
3.neutral
3. Reasons for the appearance of black exhaust smoke:
1.incomplete fuel combustion
2.Coolant enters the combustion chamber
4. The value that shows what kind of work the engine does per unit of time is called:
1. Engine power
2. Maximum torque
5. The CHECK ENGINE indicator lamp indicates:
1.About engine performance with improved performance
2. about the presence of a malfunction in the fuel injection system
3.on the need to check the oil level in the crankcase
Ticket number 4
1. What are the most probable causes bad release of hydraulically actuated brakes?
1.absence freewheel brake pedal
2.Leakiness of the hydraulic drive
3.decrease in level brake fluid in the master brake cylinder
2. Cause of uneven steering effort when cornering:
1.increased clearances in the meshing of the worm and roller
2.backlash in the steering rod joints
3.increased wheel imbalance
4.Damage to the working surfaces of the worm and roller
3. When the elasticity of the injector spring decreases, the fuel injection pressure:
1.decreases
2.increases
3.stays the same
4. A sensor, a malfunction of which will cause the engine with a fuel injection system to stop and the inability to restart it:
1.any of the sensors
2.Mass air flow sensor
3.Coolant temperature sensor
4.crankshaft position sensor
5. What is the purpose of the turbocharger used in the diesel power system?
1.increase engine power
2.increase the maximum crankshaft speed
3.Ease of starting diesel engine
Ticket number 5
1. Leakage of coolant through the inspection hole in the lower part of the water pump housing indicates:
1.Leakiness of the connection between the cover and the pump housing
2.worn or damaged oil seal parts
3.loose the fastening of the impeller on the pump shaft
4. any of the following faults occur
2. How should the radiator cap be removed to check the coolant level in the upper radiator reservoir when the engine is fully warm?
1.Unscrew the plug, in case of steam escaping, re-close, then quickly open and remove
2.Cover the cork with a wet cloth in several layers, remove the cork, protecting hands and face from burns
3.Quickly unscrew the plug and take it to the side with a sharp movement of the hand
3. The thermostat is operational if, when the engine warms up to a coolant temperature of + 80 ° C, the hose connecting the thermostat pipe with the upper radiator tank:
1.heats up to coolant temperature and becomes cold after fully warming up
2.stays cold, and after the engine is fully warmed up, the hose temperature matches the coolant temperature
4. When removing scale, which is deposited during the operation of the cooling system and impairs the operation of the engine, use aqueous solutions of various substances. If there is significant scale deposition, it is removed by flushing:
1.Separate radiator and engine cooling jacket
2.together with the same solution for all appliances
3.separately or together, depending on the characteristics of the engine
TOGBOU SPO "Diversified technical school"
Test set
by profession "Auto mechanic"
specialty "Locksmith for car repair"
Developer: Olenina Galina Borisovna,
industrial training master
morshansk
Option 1
1. Determine how many revolutions of the crankshaft the working cycle of a four-stroke engine takes.
A. one
At two
S. three
D. four
2. Name the engine coolants.
A. water, oil
V. antifreeze, antifreeze
C. distilled water, electrolyte
D. kerosene, solid oil
3. Control and diagnostic, fastening, adjustment, lubrication and cleaning work are carried out during
A. EO
B. overhaul
HUNDRED
D. Maintenance
4. What are the main types of cooling systems.
A. water and atmospheric cooling system
B. atmospheric and nitrogen cooling system
C. antifreeze and antifreeze cooling system
D. liquid and air cooling system
5. What are the engines according to the type of fuel used?
A. diesel, gasoline
V. carburetor, injection, diesel, gas
C. on liquid fuel, on gaseous
D. diesel, gas
6. Slip indicates a malfunction
A. power system
B. clutch
C. transmission
D. KShM
7.. ... ... serves to convert the reciprocating movement of the piston into rotation of the crankshaft.
A. power system
V. KShM
S. GRM
D. ignition system
8. What is the clutch used for?
A. to transmit torque at varying angle and distance
B. to change power, speed, and reverse
C. for smooth starting and shifting
D. to change the torque
9. List the major parts of a piston engine.
A. crankcase, cylinder, head, piston, piston rings, finger, connecting rod
B. cylinder, piston rings, finger, piston
C. crankcase, crankshaft, head
D. piston, crankshaft, cylinder, crankcase
10. How many times and where exactly is the fuel in the fuel system of a car cleaned?
A. 3 times - in the tank, fuel pump, crankshaft
B. 3 times - in the tank, full-flow filter, carburetor
C. 4 times - in the tank, filter-sump, full-flow filter, carburetor
D. 4 times - in the tank, fuel pump, filter, carburetor
11. By what criteria are car gearboxes classified?
A. by lubrication method
V. on cardan transfers
S. according to the number of gears, the method of switching, the number of shafts
D. by the way of carrying out the working cycle
12. Name the reasons for engine overheating.
A. Filters clogged, early ignition
B. thermostat stuck, blinds closed, belt loose or broken
C. too little oil in the engine, improper carburetor adjustment
D. Antifreeze leaked
13. What is the crank mechanism for?
A. for feeding a combustible mixture
B. to maintain regulatory temperature regime engine operation
C. to convert the rectilinear reciprocating motion of the piston into the rotary motion of the crankshaft
D. Designed to ignite a combustible mixture
14. List the parts of the engine lubrication system.
A. sump, radiator, pump, breather
B. pallet, oil pump, oil receiver, filter, oil valves
C. oil receiver, oil valves, filter, pipes, thermostat
D. oil cooler, oil pump, oil receiver, taps
15. List the parts of the gas distribution mechanism.
A. springs, rods, pushers, head, camshaft
B. timing gears, crankshaft, pushers, springs, rods, rocker arms
C. valves, springs, rocker arms, rods, pushers, camshaft
D. rocker arms, rods, tappets, springs, intake valves
Option 2
1. Name the brands of gasoline used for car engines.
A. AB - 71, 75, 94
V. Ai - 76, 92, 95, 98
S. A - 94, 77, 70, 91
D. Au - 72, 92, 96
2. Seasonal service is carried out
A. 4 times a year
V. daily
C. as required
D. 2 times a year
3. Cleaning and washing, inspection, refueling works are carried out during
A. EO
V. TO
C. CO
D. Maintenance
4. Name the types of lubrication of parts in the engine.
A. lubrication with grease or lithol
C. lubrication by pressure, gravity, spray
B. lubricated with oil M 6/10
D. vegetable oil lubrication
5. For what purpose is the radiator of the cooling system made of non-ferrous metals?
A. non-ferrous metals have a much higher thermal conductivity than others.
B. the thermal conductivity of non-ferrous metals is much lower than that of the rest
C. parts and mechanisms made of non-ferrous metals are much lighter than others
D. non-ferrous metals are much cheaper than others
6. What is the composition of a normal combustible mixture in the ratio of gasoline to air.
A. 1: 5
Q. 1: 15
S. 1: 10
D. 1: 20
7.. ... ... serves for the timely admission of air into the cylinder (for diesel engines) and the combustible mixture (for gasoline engines), as well as the timely removal of exhaust gases.
A. GRM
B. lubrication system
C. cooling system
D. ignition system
8. What kind of clutch drive is used on cars?
A. mechanical, pneumatic
B. pneumohydraulic
C. combined, hydraulic, mechanical
D. electrical, mechanical
9. What part or assembly belongs to the gas distribution mechanism?
A. rocker
B. oil pump
C. thermostat
D. connecting rod with pin
10. How many times and where exactly is the fuel in the diesel power supply system of a KAMAZ vehicle cleaned?
A. 3 times - in the tank, full-flow filter, carburetor
B. 4 times - in the tank, filter-settler, full-flow filter, carburetor
C. 4 times - in a tank, filter-settler, full-flow filter, nozzle
D. 3 times - in the tank, fuel pump, crankshaft
11. A decrease in engine power, an increase in fuel or oil consumption, a drop in pressure, the occurrence of knocking smoke indicates a malfunction.
A. KShM and gas distribution mechanism
B. gearbox and transfer case
FROM. main gear and differential
D. lubrication system
12. Determine in which circle the liquid circulates in the cooling system when the engine is started.
A. by and large
B. does not matter
C. does not circulate
D. for small
13. Determine how the wear of the carburetor fuel jets will affect the composition of the combustible mixture.
A. to re-enrichment of the combustible mixture
B. to overdevelopment of the combustible mixture
C. normalization of the combustible mixture
D. will not affect
14. List the details of the fuel supply of the carburetor engine.
A. tank, cylinder, reducer, solenoid valve, highways
V. tank, filters, fuel pump, fuel pipes, carburetor
C. tank, filters, fuel pump, high pressure pump, injectors, fuel pipes
D. tank, fuel pump, carburetor, filters, radiator
15. List the parts of the cooling system.
A. engine cooling jacket, radiator, water pump, curtain, impeller
B. fan, radiator, pump, engine cooling jacket, taps
C. engine cooling jacket, fan, radiator, water pump, thermostat, blinds, taps
D. block, head, pump, radiator, fan, thermostat
Option 3
1. Which of the following does not apply to major vehicle parts?
A. engine
B. body
S. steering wheel
D. chassis
2. How is the cooling system flushed?
A. Trilon B, caustic soda
B. distilled water, baking soda
With electrolyte
D. antifreeze
3. What kind of maintenance does the lubricant change?
A. TO-1, if there is time
B. after overhaul
S. EO
D. TO-2, according to the lubrication schedule
4. What part or assembly belongs to the cooling system?
A. oil intake
B. heater radiator
C. valve
D. distributor
5. List the strokes of the four-stroke engine.
A. inlet, stroke, release, compression
B. working stroke, intake, exhaust, compression
C. compression, inlet, working stroke, release
D. inlet, compression, working stroke, outlet
6. What are the engines according to the number of cylinders?
A. single-cylinder, double-cylinder, multi-cylinder
B. two-cylinder, four-cylinder
C. four-cylinder, eight-cylinder, twelve-cylinder
D. single cylinder, double cylinder, three cylinder
7.. ... ... serves for storage of the fuel stock carried with you, its cleaning and supply for mixture formation.
A. ignition system
B. lubrication system
C. power system
D. cooling system
8. By what criteria are car gearboxes classified?
A. by the number of shafts
B. by the number of gears
C. by way of inclusion
D. by lubrication method
9. What part or assembly belongs to the ignition system?
A. pump
B. valve
S. coil
D. thermostat
10. How many times and where exactly is the oil in the lubrication system of a passenger car engine cleaned?
A. 3 times - in the oil intake, sump filter, crankshaft
B. 3 times - in the oil intake, full-flow filter, crankshaft
C. 4 times - in the oil intake, filter-sump, full-flow filter, crankshaft
D. 2 times - in the oil intake, crankshaft
11. Difficulty shifting gears, spontaneous shutdown or noise during operation indicates a malfunction.
A. final drive and differential
B. transmission and transfer case
C. KShM and gas distribution mechanism
D. lubrication system
12. Determine what causes the decrease in pressure of the beginning of fuel injection by the injectors below the maximum allowable.
A. to reduce engine power
B. to an increase in fuel consumption and an increase in exhaust smoke
C. increase engine vibration
D. to leakage of the system and gas leakage
13. Determine the purpose of the rods in the timing.
A. designed to transfer force from the pusher to the rocker arm
V. are designed to transfer force from the pusher to the valve
C. are designed to transfer force from camshaft through the rods to the rocker
D. Designed to transfer force from the rocker arm to the valve
14. List the parts of the piston group.
A. piston, piston pin, block
B. piston pin, piston, connecting rod, crankshaft
C. piston, piston rings, piston pin, cylinder liner
D. piston rings, piston, head
15. List the details of the diesel fuel supply.
A. tank, fuel pump, carburetor, filters
B. tank, filters, fuel priming pump, high pressure pump, injectors, fuel pipes
C. filters, fuel pipes, cylinder, reducer, solenoid valve
D. fuel pump, filters, thermostat, radiator
A short test ticket for testing questions by profession: "Car repairman". Aimed at testing knowledge and skills. The random order of questions allows full testing.
A short test ticket for testing questions by profession: "Car repairman". Electrolyte density, gearbox arrangement, compression, engine operation, theory.
A short test ticket for testing questions by profession: "Car repairman". Exhaust system malfunctions, engine damage, physical quantities, control devices, engine starting.
A short test ticket for testing questions by profession: "Car repairman". Causes of poor hydraulic brake release and uneven steering effort when cornering, turbocharger, sensors in the fuel injection system, engine injectors.
Express test for a car repair locksmith - fog lightswill help you test your knowledge. Issues raised: light propagation, operating modes, direction of luminous flux, device, installation.
(Literature: Chumachenko Yu.T., Rassanov B.B. Automotive workshop: Tutorial to the implementation of laboratory and practical work. - Rostov n / a: Phoenix, 2002. Pp. 345-473)
Legend:
Correct answer
Wrong answer
?
By their purpose, cars are distinguished:
Tractors, passenger cars.
Freight, passenger, special.
Firefighters, sanitary, dump trucks.
The main parts of the car:
Chassis, body, engine.
Cab, engine, frame
The chassis includes:
Clutch, gearbox, chassis, wheels and tires.
Transmission, chassis, control mechanisms,
Transmission, clutch, gearbox, chassis, control mechanisms.
The transmission consists of:
Clutches, gearboxes, differential, wheels.
Clutch, gearbox, cardan transmission, one or more driving axles,
Gearboxes, running gear.
Undercarriage components
Front and rear axles, springs, wheels.
Frame, springs, shock absorbers, wheels and tires.
Frame, front and rear axles.
Frame, front and rear axles, springs, shock absorbers, wheels and tires.
Wheel arrangement "6x4" means:
The total number of bridges is 6, of which 4 are leading
The total number of wheels is 6 and they are mounted on 4 axles.
The total number of wheels is 6, of which 4 are leading.
By the method of formation of the combustible mixture and the type of fuel used, engines are distinguished:
With external mixture formation.
With internal mixing.
Ignition of the working mixture in engines is carried out using:
Electric discharge.
High compression ratio.
Vacuum.
The extreme positions in which the piston changes direction of movement are called:
NMT, VMT.
PMT, LMT.
The space in the cylinder freed by the piston when it moves from TDC to BDC:
Engine displacement;
Full cylinder displacement;
Combustion chamber volume;
The working volume of the cylinder.
Engine displacement is -
The sum of the working volumes of all cylinders in cm3;
The sum of the volumes of the combustion chambers of all cylinders in cm3
Whole engine displacement in cm3
Engine Compression Ratio means:
The ratio of the working volume of the cylinder to the volume of the combustion chamber;
The ratio of the total volume of the cylinder to the volume of the combustion chamber;
The ratio of the total volume of the cylinder to the working volume of the cylinder.
Engines internal combustion there are types:
Gasoline
Diesel
Gas
Crank
The distance traveled by the piston from one dead center to another is called
The length of the stroke,
Working stroke,
Piston stroke.
Compression ratio gasoline engine equals
The compression ratio of a diesel engine is
Compression is the pressure in the cylinder at the end of the compression stroke.
Technical condition (degree of wear) of the engine.
Engine durability.
Condition of the crankshaft and engine pistons.
Compression more degree compression,
Compression is numerically equal to the compression ratio,
Compression is less than the compression ratio.
The value that shows what kind of work the engine does per unit of time is called:
Engine power.
Maximum torque.
Power is measured:
In kilowatts (kW) horse power (l. s),
In horsepower (hp),
In kilowatt hours (kWh).
Engine torque:
Determines the traction force on the car wheels;
It is equal to the product of the force acting on the piston during the expansion of gases in the cylinder by the arm of its action;
The more it is, the better the car acceleration dynamics.
A stroke is a process (part of a work cycle) that takes place in a cylinder
In four piston strokes.
For two piston strokes.
In one piston stroke.
What in one cylinder of a four-stroke carburetor engine flows in the sequence: intake, compression, working stroke or expansion, exhaust?
Working cycle.
What is the most common cylinder order in a four-cylinder engine?
What are the piston rings?
Compression
Oil scraper
Intermediate
Most economical engine:
Two-stroke;
Four-stroke.
The main parts of the gas distribution mechanism (timing) are:
Camshaft,
Intake and exhaust valves,
Drive mechanism;
An exhaust manifold.
Which valve in the cylinder head most often fails:
Inlet
High school graduation
Neutral.
The lubrication system serves for as well
To clean parts from burning,
Reducing friction of moving engine parts,
For cooling moving parts when heated during operation.
Marking batteryused on cars (for example 6ST-55EM) shows:
Number of batteries, purpose, battery capacity in milliliters, battery modification.
Battery voltage, purpose, battery capacity in milliliters, battery modification.
Number of batteries, purpose, nominal battery capacity in ampere-hours, battery body material, separator material.
Car generator (choose the correct ones) -
Converts mechanical energy into electrical energy.
Serves to power all consumers and charge the storage battery when the engine is running.
It is mainly three-phase alternating current with a rectifier.
Powers the starter when the engine is started.
The voltage it generates depends on the engine speed.
Equipped with a voltage regulator to keep the voltage constant.
Symptoms of a generator malfunction:
Lights up continuously when the engine is running control lamp on the dashboard.
Fast discharge of the battery.
The engine runs when the battery is disconnected.
Accelerated discharge of the battery while the engine is running may be due to:
Alternator drive belt slipping.
Built-in generator voltage regulator burned out.
Generator bearings are worn out;
The terminals in the battery-generator electrical circuit are oxidized.
Improper adjustment of the alternator belt tension can result in
To increase the voltage of the on-board network;
Heating up the generator due to slipping on the belt pulleys;
To undercharging the battery;
Rapid wear drive belt generator;
Failure of bearings due to increased loads on the generator shaft.
If the gasoline engine does not start, then first check:
Tire pressure;
The presence of fuel in the system;
Sparking presence;
Battery charging.
Battery life is approximately
Oscillation of the speedometer needle occurs in cases
Improper driving.
Poor flex shaft attachment.
The presence of bends in the flexible shaft with a radius of less than 150 mm.
Lack of lubrication in the flexible shaft shell.
Lack of longitudinal movement of the flexible shaft.
Maintenance (MOT) of a car is
A set of measures that are carried out to prevent malfunctions.
A set of technical measures that are carried out in order to maintain the car in a technically sound condition, reduce the intensity of wear of parts and prevent malfunctions.
A set of activities that are carried out with the aim partial renovation car.
Views maintenance (TO)
Second (TO-2).
Daily Maintenance (ETO)
Monthly maintenance (ETO).
First (TO-1).
Seasonal (STO).
The pneumatic system of the brakes is sealed in case
The air pressure in the system (7 kgf.cm2) with switched off consumers decreases by no more than 0.15 kgf.cm2 within 15 minutes.
The air pressure in the system (7 kgf.cm2) with the included consumers decreases by at least 0.15 kgf.cm2 within 15 minutes.
The air pressure in the system (7 kgf.cm2) with the included consumers decreases by no more than 0.30 kgf.cm2 within 15 minutes.
The tightness is not checked according to the readings of the instruments.
Reasons for increased steering wheel play:
Loosening bolts.
Increasing the clearance in the bearings of the idler wheel hubs.
The gap is always constant and not adjustable.
Causes of tight steering wheel rotation
Low tire pressure.
There is no oil in the worm-type crankcase.
High tire pressure.
Incorrect steering gear adjustment.
Reasons for braking one of the wheels:
Breakage of the clamping springs of the pads.
Leaking brake fluid.
The braking system contains air locks.
The piston is jammed in the brake cylinder.
Reasons for skidding or skidding the car to the side when braking:
Different tire pressures.
Leaking brake fluid from one brake cylinder.
There is no free play on the brake pedal.
Dirty or oily discs, pads.
Reasons for engine overheating:
There is little fluid in the cooling system.
Fan belt loose.
Fan belt is oiled.
Motor overload.
Reasons for engine overheating:
Poor quality fuel.
Fan belt slipping.
The system is filled with water instead of antifreeze
The presence of limescale in the cooling system.
Fan worn out.
Reasons for low oil pressure in the lubrication system:
Low oil level in the crankcase.
The oil has been diluted with fuel.
Causes of blue exhaust fumes:
Oil enters the combustion chamber due to excess in the crankcase.
The valve stem seals are worn.
Overheating of the engine.
Piston rings worn.
Reasons for the appearance white smoke exhaust gases:
Oil enters the combustion chamber.
Piston rings worn.
The engine is cold.
Coolant enters the combustion chamber.
Causes of black exhaust smoke:
Incomplete combustion of fuel.
Coolant enters the combustion chamber.
?
The density of the electrolyte of a fully charged battery for central areas should be:
As the battery is discharged, the density of the electrolyte:
Decreases.
Increases.
The size of the gap between the electrodes of the candles by carburetor engine should be:
1.0 ... 1.3 mm.
0.6 ... 0.7 mm.
0.2 ... 0.3 mm.
The gap between the electrodes of the spark plugs on an engine with a fuel injection system must be:
0.6 ... 0.7 mm.
10 ... 15 thousand km of run.
20 ... 25 thousand km of run.
Only after discovering its malfunction.
A sensor, a malfunction of which will cause the engine with a fuel injection system to stop and the inability to start it up again:
Crankshaft position sensor.
Coolant temperature sensor.
Mass air flow sensor.
Any of the sensors.
The CHECK ENGINE warning light indicates:
On the operation of the engine with improved characteristics.
The presence of a malfunction in the fuel injection system.
On the need to check the oil level in the crankcase.
The reasons for the appearance of knocks in the engine:
Increased valve drive clearances.
KShM parts are worn out.
The piston is not lubricated enough.
Signs of an inappropriate composition of the combustible mixture prepared by the carburetor:
Uneven (up to a stop) engine idling.
Dips and interruptions when pressing the accelerator pedal (supply of a combustible mixture) during acceleration of the car.
+ "Shots" in the intake manifold or in the muffler.
Failure of one of the spark plugs.
A short to ground on the spark plug tip or high-voltage wire.
The engine is too cold.
Reasons for difficult starting of the engine:
Damage to the distributor cover.
Broken by the gap between the breaker contacts.
High voltage wires fell out.
Starter defective.
The main systems "responsible" for starting and operating the engine are:
Supply system.
Cooling system.
Ignition system.
Lubrication system.
What are the most likely causes of increased steering wheel play?
Increased wheel imbalance.
The most likely reason for the lack of self-return of the steering wheel when the car exits a turn:
Damage to the working surfaces of the worm and roller.
Increased wheel imbalance.
No gaps in the meshing of the worm and the roller.
Cause of uneven steering effort when cornering:
Increased clearances in the meshing of the worm and roller.
Backlash in the steering link joints.
Increased wheel imbalance.
No gaps in the meshing of the worm and the roller.
Damage to the working surfaces of the worm and roller.
What are the most likely causes of patchy tire wear?
Backlash in the steering link joints.
Increased wheel imbalance.
Absence of gaps in the meshing of the worm and the roller.
Increased clearances in the meshing of the worm and roller.
Damage to the working surfaces of the worm and roller.
The most likely causes of steering wheel vibration while driving are:
Increased clearances in the meshing of the worm and roller.
Increased wheel imbalance.
No gaps in the meshing of the worm and the roller.
Damage to the working surfaces of the worm and roller.
Backlash in the steering link joints.
Before measuring and adjusting the play of the steering wheel, it is necessary to check and tighten the fastening points ...
Steering gear housing,
Swivel arms and bipod,
Pendulum arm bracket,
Steering wheel to shaft,
Transverse and longitudinal rods
?
Before checking the backlash, the steered wheels must be set to the position ...
Corresponding to movement in a straight line
When the wheels are turned all the way to the left,
In which the wheels are turned to failure in one of the extreme positions.
Steering backlash is determined by the movement of the steering wheel between two extreme positions. The beginning of the backlash measurement is characterized by the fact that ...
The effort on the steering wheel is reduced,
The front wheels start to turn
The effort on the steering wheel is increased,
Any of the above signs takes place.
When measuring backlash, the front wheels are usually ...
Jack up
Do not jack up.
The total steering friction is checked with ... front wheels.
Fully posted
Not posted.
How is the degree of wear of the steering link joint parts determined?
Reveal play in the hinge when swinging the steering rods by hand.
They grasp the hinge with their palm, turn the steering wheel sharply.
Observe the hinge during a sharp turn of the ruble wheel.
Use any of the following methods.
How to proceed if identified big backlash in the pivot joints of the steering rods?
If the parts are worn within the permissible limits, tighten the screw plug and install the cotter pin.
Replace the ball pin or crackers; if necessary, tighten the spring with a screw plug.
In case of heavy wear, replace the joint assembly with a new one.
Use any of the above methods.
When operating a car in normal road conditions, the steering linkage joints should be serviced after ... thousand km of run.
What are the requirements for the technical condition of workers braking systems?
When you press the brake pedal brakes one axis must be triggered at the same time.
Braking efficiency (determined by the length braking distance) must not exceed the specified value.
When the brake pedal is fully released, there should be no braking wheels.
All of the above requirements must be met.
What parameters characterizing the technical condition of the brake system are checked during sea trials?
Free play of the pedal.
Slowdown.
Actuator pressure.
Braking distances.
Braking torque on wheels.
All of the listed parameters.
Running tests of braking systems are carried out on a section of the road, which must ...
Be horizontal,
Be flat and dry
Have a coefficient of adhesion of at least 0.6,
Meet all the listed requirements?
What are the most likely causes of poor hydraulic brake release?
Lack of free play of the brake pedal.
Leaking hydraulic drive.
Weakening or breakage of the brake pad return springs.
Decrease in the level of brake fluid in the brake master cylinder.
Elongation of the braking distance.
Uneven wheel braking.
Weak braking.
Failure to work brakes.
What are the most likely consequences of increased wear on the running surfaces of one of the brake drums?
Elongation of the braking distance.
Braking when the pedal is released.
Checking the tightness of the piston cuff and the ball valve of the brake booster of the GAZ-53 car is carried out by holding the pedal pressed for 2-3 minutes with the engine running. If the pedal moves to the floor within the specified time, this indicates ....
Valve leaks,
Valve tightness,
Leaking cuff
The tightness of the cuff.
The presence of air in hydraulic drive brakes is determined by ...
Movement of the brake pedal without perceptible resistance,
By increasing the "stiffness" of the pedal,
By lengthening the braking distance,
Wheel braking when the pedal is released.
Which of the following operations, related to the removal of air from the hydraulic drive, is performed first of all?
Removing the rubber cap from the valve of the working (wheel) brake cylinder.
Checking the fluid level in the reservoir of the master brake cylinder.
Unscrewing the valve mounted on the wheel cylinder. Lengthening the braking distance.
What is the basis for determining the end of pumping?
Reducing the level of brake fluid in the reservoir of the master brake cylinder by half of the nominal level.
A noticeable increase in the effort required to move the brake pedal.
Stopping the release of air bubbles from the hose, the end of which is lowered into a can with brake fluid.
?
How are the fuel supply channels of the high pressure pump filled before starting the diesel engine?
Turning the engine crankshaft with the crank handle.
Reciprocating movement of the fuel pump button.
Turning the engine crankshaft with a starter.
What is the purpose of the turbocharger used in the diesel power system?
Increased engine power.
Increase the maximum crankshaft speed.
Facilitation of starting a diesel engine.
The turbocharger shaft installed in the diesel power system of a KamAZ car is driven into rotation ...
Through mechanical transmission from the crankshaft,
From the engine camshaft,
By using the energy of the exhaust gases,
From the camshaft of the high pressure pump.
Difficulty starting the engine.
Smoky exhaust.
What are the most likely consequences of a decrease in fuel injection pressure?
Difficulty starting the engine.
Engine intermittent.
Smoky exhaust.
What are the most likely consequences of uneven fuel delivery to the injectors by pump sections?
Difficulty starting the engine.
Smoky exhaust.
What are the most likely consequences of a loose fuel filter cap with air entering the fuel lines?
Difficulty starting the engine.
Engine intermittent.
Smoky exhaust.
Which of the following malfunctions cannot be the cause of a decrease in the fuel injection pressure?
Plunger worn.
Liner wear.
Weakening of the injector spring.
Increase in the diameter of the nozzle spray holes due to wear
When the elasticity of the injector spring decreases, the fuel injection pressure ...
Decreases
Increases
Doesn't change.
The thermostat is operational if, when the engine warms up to a coolant temperature of + 80 ° C, the hose connecting the thermostat pipe with the upper radiator tank ...
Remains cold, and after the engine has completely warmed up, the hose temperature corresponds to the coolant temperature,
It warms up to the coolant temperature and becomes cold after full warming up.
How is the tension of the coolant pump drive belt checked?
Measuring the force causing the belt to slip on the pulley.
By measuring the total actual length of the belt and comparing it with the nominal value.
By measuring the deflection of the strand of the belt in the middle.
In any of the following ways.
How should the radiator cap be removed to check the coolant level in the upper radiator reservoir when the engine is fully warmed up?
Unscrew the plug quickly and take it to the side with a sharp movement of the hand.
Unscrew the plug, in case of steam escaping, close it again, then quickly open and remove.
Cover the cork with a wet cloth in several layers, remove the cork, protecting your hands and face from burns.
Remove the plug only after the coolant temperature has dropped to 40 ° C
Leakage of coolant through the inspection hole in the lower part of the water pump housing indicates ...
Leaks in the connection between the cover and the pump housing,
Worn or damaged oil seal parts,
Looseness of the impeller on the pump shaft,
Any of the following malfunctions occur.
When removing scale, which is deposited during the operation of the cooling system and impairs the operation of the engine, water solutions of various substances are used. If there is significant scale deposition, it is removed by washing ...
Separate radiator and engine cooling jacket,
Together with the same solution for all devices,
Separately or together, depending on the characteristics of the engine.
Which of the following functions are not performed by lubrication systems?
Reducing friction and wear intensity of rubbing surfaces.
Removal of wear products from the friction zone.
Reducing shock loads on parts of the cylinder-piston group.
Partial heat removal from rubbing surfaces.
Ensuring optimal thermal conditions for the engine.
Corrosion protection of parts.
What parts and parts surfaces are pressure lubricated?
Crankshaft journals.
Distribution gears.
Rocker arm bushings.
Camshaft bearing journals.
Pushers.
Upper rod ends.
Camshaft cams.
The most dangerous consequences arise if the oil pressure in the lubrication system becomes too ...
Big,
How to move around in the step voltage zone
Goose step.
By rolling.
The usual step.
When should a pressure bandage be applied?
With bleeding, if blood passively drains from the wound.
Scarlet blood flows out of the wound in a gushing stream.
Large bloody stain on clothing.
In cases of pre-release compression syndrome
In which case, the victim must be carried on his back with legs raised or bent at the knees
In a coma.
With frequent vomiting.
With penetrating wounds of the abdominal cavity.
With penetrating wounds of the chest.
When the neck is injured.
How long can the victim lie on a metal stretcher
5 - 10 minutes
10-15 minutes
10 - 20 minutes
15 - 20 minutes
15 - 25 minutes
Within a radius of how many meters from the place where the electric wire touches the ground, you can get under the step voltage
10 meters
15 meters
What actions to take in a coma (in the absence of consciousness and the presence of a pulse on the carotid artery)
Turn the victim onto his stomach, periodically remove everything from the oral cavity, apply cold to the head
Turn the victim onto his back, periodically remove everything from the oral cavity, apply cold to the head
Turn the victim to the right side, periodically remove everything from the oral cavity, put cold under the head
Release the chest from clothes and unfasten the waist belt, raise the legs, press on the pain point, in the absence of consciousness, put the victim on the right side, periodically remove everything from the oral cavity, put cold under the head
Release the chest from clothes and unfasten the waist belt, raise the legs, press on the pain point, in the absence of consciousness, put the victim on his stomach, periodically remove everything from the oral cavity, put cold on his head
In case of poisoning with poisonous gases, it is necessary to turn the victim onto his stomach and apply cold to the head, if consciousness did not appear during
In case of fainting, it is necessary to turn the victim onto his stomach and apply cold to the head, if consciousness did not appear during:
The depth of pressing the chest with indirect heart massage should be at least:
At least 2 cm
More than 5 cm
What to do with a penetrating chest wound
Press the palm of your hand against the wound, blocking the air access, apply an airtight bandage, transport in a sitting position
Press your palm to the wound, blocking the air access, seal with a plaster, transport in a supine position
Press your palm to the wound, blocking the air access, apply an airtight bandage, transport in a supine position
Press your palm to the wound, blocking the air access, apply a sealed bandage, transport in a standing position
Press your palm to the wound, blocking the air access, seal with a plaster, transport in a standing position
With arterial bleeding in the thigh area, the following steps must be taken:
Free the victim from clothing, stop bleeding by pressing the femoral artery with a fist, apply a tourniquet through a smooth solid object with pulse control on the popliteal fossa for no more than an hour.
Stop bleeding by pressing the femoral artery with a fist without releasing the victim from clothing, apply a tourniquet for a while until he arrives " Ambulance", to monitor the pulse in the popliteal fossa
Stop bleeding by pressing the femoral artery with a fist without releasing the victim from clothing, apply a tourniquet through a smooth solid object for no more than an hour with pulse control on the popliteal fossa
Free the victim from clothing, stop bleeding by pressing the femoral artery with a fist, apply a tourniquet with pulse control on the popliteal fossa for no more than an hour
When treating a burn without violating the integrity of the burn blisters at the scene of the incident, for how long should the burn be placed under a stream of cold water
5 - 10 minutes
10-15 minutes
15 - 20 minutes
5-15 minutes
10 - 20 minutes
Rules for the treatment of thermal burns with violation of the integrity of burn blisters and skin
Rinse with water, cover with a dry clean cloth, apply cold on top of a dry cloth
Bandage the burned surface, apply cold over the bandage
Cover with a dry clean cloth, apply cold on top of a dry cloth
Rinse with warm water, grease, cover with a dry cloth, apply cold
Grease, cover with a dry clean cloth, apply cold on top of the cloth
How long can a tourniquet be applied to a limb in case of bleeding
No more than 0.5 hours
No more than 1 hour
No more than 1.5 hours
No more than 2 hours
No more than 3 hours
Specify the correct procedure for the resuscitation complex when providing first aid by one rescuer, if the victim has no consciousness and no pulse on the carotid artery
15 pressures on the sternum, then 2 breaths of artificial respiration
5 pressures on the sternum, then 2 breaths of artificial respiration
Specify the correct procedure for the resuscitation complex when providing first aid by two rescuers, if the victim has no consciousness and no pulse on the carotid artery
15 pressures on the sternum, then 2 breaths of artificial respiration
10 pressures on the sternum, then 1 breath of artificial respiration
10 pressures on the sternum, then 2 breaths of artificial respiration
5 pressures on the sternum, then 2 breaths of artificial respiration
5 pressures on the sternum, then 1 breath of artificial respiration
Signs of a closed limb fracture
Bone debris visible
Deformity and swelling of the limb
Having a wound, often bleeding
Bluish skin color
Severe pain on movement
Signs of arterial bleeding
Scarlet blood from the wound flows out in a gushing stream
A cushion of flowing blood forms over the wound
A large bloody spot on clothing or a pool of blood near the victim
Highly dark color blood
Blood drains passively from the wound
Signs of venous bleeding
Scarlet blood from the wound flows out in a gushing stream
A cushion of flowing blood forms over the wound
Very dark blood color
Blood drains passively from the wound
Signs of sudden death (when every second can be fatal)
Lack of consciousness
No pupil response to light
No pulse in the carotid artery
The appearance of cadaveric spots
Pupil deformity when you gently squeeze the eyeball with your fingers
TICKET number 15
1. Methods for cleaning welded seams.
2. What is fit? Types of landings, their purpose.
3. The procedure for stamping parts, the tool used.
4. Labor protection during cutting and bending of metal.
EXAMINATION TICKETS
1. What are keyways? Types of keys, the order of assembly of key connections.
2. What is cast iron? The division of cast irons, their mechanical and technological properties, which means the SCh25 brand; VCH50-2; KCH30-6.
3. Vernier tool, types, design, accuracy. Measure with a caliper.
EXAMINATION TICKETS
To test the knowledge of mechanic assembly mechanics of the 4th category
TICKET number 2
1. What is the soldering process? Types of solders used in soldering.
2. Carbon structural steels, field of application, what chemical element does their mechanical properties depend on? What do the steel grades mean: ST3, steel 05kp, steel 45.
3. Sections and cuts in the drawings, their purpose, the difference between the section and the section.
4. Labor protection when testing units on stands and hydraulic pressure presses.
EXAMINATION TICKETS
To test the knowledge of mechanic assembly mechanics of the 4th category
1. What type of connection is welding?
2. Alloyed structural steels: why are alloying elements introduced into the steel; which means steel grade 30HGT.
3. Symbols in the drawings of maximum deviations from flatness and straightness.
EXAMINATION TICKETS
To test the knowledge of mechanic assembly mechanics of the 4th category
1. Hand and power tools used in assembly operations.
2. What is carbon tool steel used for? The main difference between this steel and carbon structural steel. What is the difference between steel U12 and U12A?
3. Tools for testing threads, rules for using them.
4. Labor protection when working on a drilling machine.
EXAMINATION TICKETS
To test the knowledge of mechanic assembly mechanics of the 4th category
1. Methods of eliminating deformations arising from heat treatment or welding.
2. Sanding paper, dividing the sanding paper by the base, by water resistance, by the profile of the abrasive layer. Abrasive materials used for the manufacture of abrasive paper.
3. Nominal, actual and limiting dimensions. Show these dimensions by example: Ø105 - 0.62.
4. The main causes of a fire in the workshop. Fire-fighting measures.
EXAMINATION TICKETS
To test the knowledge of mechanic assembly mechanics of the 4th category
1. Locksmith's vice, types, device, purpose, application rules.
2. Admission, its purpose; determine the size of the tolerance for size 25 + 0.43.
3. The location of the projections of the part on the drawing. Draw a sketch of the proposed part with the required number of projections.
4. Organization of the workplace of a mechanic assembly work.
EXAMINATION TICKETS
To test the knowledge of mechanic assembly mechanics of the 4th category
TICKET # 7
1. Sawing metal, a tool used for filing. Precision processing. Sawing methods.
2. Plastics and their properties, the use of plastics in mechanical engineering.
3. Conventional designation in the drawings of the tolerance of non-straightness and non-flatness.
4. Labor protection when cutting threads.
EXAMINATION TICKETS
To test the knowledge of mechanic assembly mechanics of the 4th category
1. What type of riveted joint belongs to? Types of rivets, types of riveted seams, division of riveted seams by purpose, the procedure for performing the riveting operation.
2. What is metal corrosion? Ways to protect against it.
3. Roughness of the surface, its parameters, designation in the drawings.
4. Safety requirements when working with hand-held electric machines.
EXAMINATION TICKETS
To test the knowledge of mechanic assembly mechanics of the 4th category
1. Marking, its purpose, the order of plane marking.
2. Abrasive materials. The use of abrasives in mechanical assembly work.
3. Hole system, its advantages over the shaft system.
4. Protective grounding, its purpose.
EXAMINATION TICKETS
To test the knowledge of mechanic assembly mechanics of the 4th category
TICKET No. 10
1. Metal filing. The tool used for filing, its characteristics. Sawing methods, filing accuracy.
2. Plastics, their application in mechanical engineering.
3. Symbols on the drawings of screw and bolted connections.
4. Safety requirements for soldering.
EXAMINATION TICKETS
To test the knowledge of mechanic assembly mechanics of the 4th category
TICKET number 11
1. Drilling, fixtures and tools used for drilling.
2. What is a sketch? The rules for its implementation. Sketch the proposed part.
3. Methods and means of control of smooth cylindrical products.
4. First aid to the victim of electric shock.
EXAMINATION TICKETS
To test the knowledge of mechanic assembly mechanics of the 4th category
TICKET No. 12
1. Cutting of internal and external threads. Tool, rigging, equipment.
2. The concept of a sketch, its difference from a working drawing. Sketch the proposed part.
3. Vernier caliper device for measuring from 0 to 150 mm, measurement accuracy.
4. Safety requirements for lapping and debugging.
EXAMINATION TICKETS
