Knocks out 2nd gear neva mb. Repair of the gearbox and other important working units of the neva walk-behind tractor

So, I met a lot of questions on the forums that Bioshock 2 constantly crashes, does not start normally, that there is no normal crack. Absolutely on all distributions with the second bioshock there is such crap in the comments, and nowhere is there a single adequate and specific answer. I myself personally tried several hands with this game and there were jambs on all.
DECISION
1. Why? It's not so much the same pirates. (I did not use the license), how much is that there is some kind of jamb in the game itself, which is true not for everyone, but for many. A certain amount of memory is allocated (regardless of the RAM of your computer) and at a certain stage, textures are loaded and part of the level is overloaded. In the first part it was like that too. In principle, for the most part this was not noticeably manifested in the disappearance of textures for 1/2 second, and a slight slowdown of the game for 1 second. Naturally, this did not affect the gameplay in any way. But, in the second part, during this texture overload, the game crashed.
2. What to do? There is a solution. Lower graphics. It is imperative to remove global illumination.
I personally did that.
1. Lowered the resolution to 1024x768
2. Removed frontal lighting and real-time reflections
3. The rest to the maximum.
Of course, the graphics have become a little worse, but we are not grapheme with you at the end of the day, but the main thing is that now you can play this wonderful game somehow normally and without any nerve-damaging flights.
Another problem is not saving. Solution http://www.playground.ru/cheats/bioshock/ from here I downloaded the bioshock savegames, did everything as it was written in the instructions, and the game began to be saved normally. You can use the author's save, or you can go through the game yourself, the latter is preferable, the main thing is that the save began to work perfectly.
Now I play this game - normal flight, not a single departure.
Hope helped someone.

Tags: Why does the second speed fly out on the Neva walk-behind tractor?

Description.

Feb 9, 2011 - there is a Neva with an imported engine. there are no problems with the engine, but here ... Now the 2nd gear flies out, maybe the first one flies out, I didn't go ...

the second speed of the neva2b walk-behind tractor takes off | Topic author: Yuri

Victor On the first gas to the stop and into his ravine!

Oleg throw out this gearbox and put a hydraulic motor with a pump

Egor) disassemble the bridge, most likely the shift fork spring has become inelastic

Vitaly You are daring on it!

Motoblock (urgently) (p. 2) / Smoking room - FFClub

Apr 19, 2013 - What is required, 5 to 7hp with back speed at a price of no more than 25tr. .... pliz, when you reverse the speed do not fly out? I sometimes have 2 on my oce .... Compare the cutters from the imported walk-behind tractor and from our Neva. On...

walk-behind tractor neva-2 about gearbox | Fermer.Ru - Farmer.Ru - Chief ...

Apr 8, 2010 - To my Neva-2 motoblock with a DM-1k engine (6.2 hp .... I have a Favorite motoblock and such a problem.in second gear, when ... the non-traller is thrown off and the second speed itself is turned on and ringing again.

It is not worth starting a gearbox repair on a walk-behind tractor yourself if the operation of the unit and its device for a new user is a complete secret. Since the gearbox is a rather complex unit, you should not proceed to repair it yourself immediately after detecting breakdowns. It will be better if professionals are involved in the repair of the checkpoint.

If an oil leak is detected from the gearbox, then the oil seals bearing units have been incorrectly installed or worn out. They can be loose on the lids. Damaged gaskets may appear underneath. If you find yourself clogged air valve (breather), it is necessary to clean it and bring the oil level to normal. Oil leaks can be eliminated by replacing or correct installation oil seals or gaskets. Tightening the cover bolts will also help to solve the problem.

Types of violations in the checkpoint and ways to correct them

If the mechanism automatic box transmission has ceased to function normally, then the following types of malfunctions may occur:

  1. Violation of the kinematic connection inside the gearbox.
  2. Spontaneous inclusion of gears or lack of their fixation.
  3. Oil leaks on the shift shaft.
  4. Dysfunction of the semiaxis separation mechanism.
  5. Lack of gear shifting.
  6. Gearbox jamming.

If the kinematic connection inside the gearbox is broken or the sprocket in the block breaks, it is necessary to disassemble the gearbox to replace the problematic sprocket. Excess oil in the gearbox may be the cause of oil leakage on the shift shaft, so check the oil level. If the welding connection of the gear breaks, disassembling the gearbox, change the block shaft. Drain excess oil, check the degree of wear of the working edge of the oil seal on the shift shaft, disassemble the gearbox and replace the part.

The reason for the lack of fixation of gears or their spontaneous shutdown is a violation of the adjustment of the gearshift mechanism.When making repairs, loosen the screws securing the switch mechanism board.

After that, turn on the first gear and tighten the screws that secure the board. For example, having made a mini-tractor with your own hands, it is imperative to monitor the correct adjustment of the drive by changing the tension of the control cable for disengaging the axle shafts. To fix the breakdown of any element of the drive shaft disengagement inside the gearbox, you should disassemble the gearbox, replacing the broken parts.

If a broken spring or worn shift plate retainers are found, replace the damaged parts by performing a shift adjustment. If it is missing, the shift cradle or the threaded piece of the shift knob may be cut off. After disassembling the gearbox, it will be necessary to replace the defective parts. If there is no gear shifting, disassemble the gearbox and replace the worn gear shift fork. If the cause of the gearbox jamming is an open circuit, then it should be disassembled and the chain replaced.

If the operation of the gearbox is accompanied by increased noise in the gearbox, then the reason for this may be a lack of oil in the gearbox device or a mismatch in quality lubricant necessary parameters. The choice of oils must be of the appropriate brand, they must have a certain purity. If there are any problems, you will need to change the oil or top up the gearbox.

The occurrence of noise in the transmission units of the walk-behind tractor can be caused by a weak tightening of the fasteners, therefore, it is necessary to inspect the fasteners by tightening them properly.

Frequent noises are caused by worn gears and bearings. This can lead to more serious damage to the gearbox of the walk-behind tractor. It is not difficult to avoid their appearance if you do a timely inspection and repair of the walk-behind tractor. It consists in the usual replacement of worn out assemblies and parts.

If the transmission units of the walk-behind tractor are heating up, the following main reasons for this malfunction are distinguished:

  1. Disadvantage transmission oil in the crankcases.
  2. Worn bearings.
  3. Mismatch of the oil condition with the required parameters.

There can be two reasons for correcting deficiencies:

  • bearings replaced;
  • adding or replacing oil.

In order for a gearbox or homemade gearbox to last longer, it is necessary to periodically check the oil level in them, fearing a sharp change in load.

Signs of violations associated with difficulties in gear shifting, spontaneous shutdown, violation of the unit turning on process arise for the following reasons:

  1. Deterioration of parts.
  2. Shaft spline abrasion.
  3. Incorrect clutch adjustment.

Rolling (wear) of the ends of the engaging gears causes two problems, leading to self-deactivation or incomplete engagement of speeds.

Conclusion

If the factory or homemade gearbox works with any irregularities, it will be necessary to disassemble it, as well as dress the gear teeth by grinding. If the wear is large enough, new parts must be installed. To adjust the axial position of the shafts, additional installation of circlips is required. In certain cases, it is necessary to replace worn bearings and rings.

Adjustment of the gearbox clutch for the walk-behind tractor should be carried out in a timely manner, otherwise it will stop squeezing out and difficulties may arise when shifting gears. Difficulties in controlling a walk-behind tractor often arise among beginners, who, due to inexperience, can lower the clutch lever too early when changing gear.

The motor-cultivator gearbox is a part necessary to transmit the rotation of the torque to the wheels and attachments.

Operation and maintenance of Neva-MB-2

So that there are no failures in the operation of the MB-1 and MB-2K mini tractors, you should follow all the recommendations for the operation and maintenance of equipment prescribed in the instructions:

  1. It is necessary to tune the engine. To do this, you will need to study the device of this part, choose the right oil liquid for servicing the engine, spark plugs and fuel.
  2. Tune and adjust the gearbox and transmission. The serviceability of these parts must be checked every day before starting work.
  3. Install optional equipment only in accordance with the owner's manual.
  4. Observe the maintenance schedule (points 1 and 2) and seasonal maintenance (before summer and winter).

Changing the engine oil

The procedure for changing the oil in the engine:

  1. Install vehicle on a flat surface.
  2. Let the engine cool down. This will help measure the level of the filled oil.
  3. Clean the area around the dipstick on the left side of the engine.
  4. Fill with oil up to the maximum mark (recommended oil - TAD-17I, TAP-15V).
  5. To determine the level to which the fuel fluid has been filled, you need to use the dipsticks. To do this, you need to take a dry dipstick plug and insert it into the oil fill connector. From the remaining trace, you can determine to what level the liquid was poured.
  6. With excess oil liquid a leak begins, which can lead to malfunctions in the operation of the walk-behind tractor.


First start-up and running-in

Running in is necessary so that all parts can rub in. Having worked for a short period of time at a minimum load level, in the future, the walk-behind tractor will fail less often.

  1. The running-in process must be at least the time specified in the operating instructions.
  2. Loads should be light. For example, if in technical characteristics it is indicated that the maximum depth of tillage is 50 cm, then during the first start and running in it is recommended to limit it to 30 cm.
  3. Fill the engine with oil before running in.

Break-in procedure:

  1. Fill up the fuel tank.
  2. Start the machine at medium speed.
  3. Check the operation of all gears within 60 minutes.
  4. Perform a small amount of work on cultivation, plowing the soil and transporting small-sized cargo.

Major malfunctions

The reason for repairing the Neva MB-2 walk-behind tractor can be:

  • incorrectly adjusted valve belt;
  • gearbox oil seals;
  • incorrect tuning of the carburetor system;
  • not exposed ignition;
  • malfunctions with candles.


Belt adjustment and dimensions

The V-belt on the walk-behind tractor helps the unit to move forward and backward. When jumps off drive belt, the technique ceases to function correctly.

In order to determine the size of this part, it is necessary to measure the gap from the pulley to the rollers. Recommended belt parameters: width - 0.85 cm, height - 0.6 cm.

To tension the belt, you must do the following manipulations:

  1. Remove the cover.
  2. Loosen the tensioning screw of the standard belt part.
  3. Move aside all the screws that hold the bracket to the walk-behind tractor body.
  4. Pull out the old part and adjust the pulleys.
  5. Wipe the place between the parts and blow out the rods.
  6. Install a new belt, one end of which should be connected to the shaft and the other to the pulley.

Replacing the gearbox oil seals

Malfunctioning oil seals can cause damage to the gearbox. Therefore, repairing the gearbox of the Neva walk-behind tractor may include the following actions:

  1. Dismantling the cutters from the shaft.
  2. Cleaning the shaft and cover from dirt and oil residues. Remove all screws from the cover and wash them.
  3. Replace the old part with a new one and wipe the entire mechanism dry.
  4. Replace the cover and secure with the bolts.


In some cases, it is necessary to disassemble the gearbox:

  1. Remove the knob from the gear shift knob.
  2. Remove the bushing and spring from the shaft.
  3. Remove all screws and clamping bolts.
  4. Using a thin screwdriver or knife, remove the right half of this part.
  5. The removed parts must be washed, and the defective parts must be replaced.
  6. The assembly of the reducer is carried out in the reverse order.

Before adjusting the carburetor, adjust the centrifugal regulator according to the user's manual.

Setting procedure:

  1. Tighten bolts at idle and full throttle to maximum and then back out 1.5 turns.
  2. Install damper throttle type so that a gap of the corresponding parameters appears between the base and the duct.
  3. Try to start the engine. If it starts up, you need to wait until it warms up.
  4. Set the control handle to minimum speed.
  5. Perform minimum revolutions on idling with the throttle valve screw.
  6. Set the RPM to maximum using the idle screw.
  7. Repeat the last 2 steps until the motor starts running smoothly.
  8. Set the control handle to gas.


Adjustment of valves

The valves on the Neva walk-behind tractor are adjusted as follows:

  1. Install the unit on a flat surface.
  2. The engine is started and then allowed to cool.
  3. Remove the cover.
  4. Remove the cover from the valves to provide access to the parts under it.
  5. Unscrew the lock nut.
  6. Perform the adjustment. You need to loosen the nuts, insert the dipstick, adjust the valves.
  7. Screw the valve nut back into place.
  8. A razor blade (not more than 0.2 mm thick) is inserted into the resulting gap. It should pass freely between the piston part and the valves of the walk-behind tractor.
  9. Screw all the details back.

The size of the gap formed can be checked with a feeler gauge, which should pass under the valve if the cut is made correctly.

Checking and adjusting the clutch

Clutch check:

  1. When the clutch handle is in the "off" position, the cable should be slackened. Tension roller moves to the lower position and comes into contact with the drive belt.
  2. When the handle is in the “On” position, the cable tightens the pulley and the bottom of the belt is pressed tightly against it. The small pulley transfers the momentum to the large pulley, thereby transferring power.


Adjustment procedure:

  1. If knocks out 2nd gear with the clutch handle engaged. It needs to be translated into correct position... To do this, it is necessary to arrange parallel V-belts on 2 sides of the motor pulley.
  2. If 2nd gear takes off when the clutch handle is disengaged. It is necessary to constantly monitor the position of the V-type belts, they must be parallel to each other.

How to set the ignition

The procedure for adjusting the ignition of the walk-behind tractor:

  1. To turn crankshaft so that the marks made on the pulley and gas equipment unit coincided.
  2. The slider, which is responsible for the distribution of gas flows, must be directed to the high-voltage wire of the cylindrical part.
  3. Loosen the nut and remove the high-voltage wire from the cover of this system.
  4. Place the contacts at a distance of 0.5 cm from the equipment.
  5. Turn the ignition.
  6. Turn the mechanical structure in the opposite direction.
  7. After the spark appears, quickly tighten the screw.

Problems with candles

  1. Unscrew the candle element.
  2. Clean the electrodes.
  3. Get rid of carbon deposits.
  4. Turn the crankshaft to the position where the marks of the pulley and the gas device match.
  5. Aim the slider at the high voltage surface of the cylinder.
  6. Loosen the screw and remove the wire.
  7. Turn the ignition key. If there is no spark, then the spark plugs are defective and should be replaced. Before installing a new element, you need to make sure that there is no sealing washer from the previous part in the cylinder head.


You also need to check the parameters of the gap between the spark plug electrodes:

Why doesn't it start, shoots, smokes, and what to do about it

If the engine does not start, the reason may be as follows:

  1. There is no spark. In this case, it is recommended to pull out the candle element and insert it into a special candlestick, and put the body on the cylinder. After that, you need to start the engine. If the spark does not appear, it is recommended to replace the spark plug.
  2. Fuel does not reach the engine. It is necessary to inspect and blow out the hose that connects the carburetor and the tap. If necessary, you can disassemble the carburetor and rinse it from the inside with A-95 gasoline.

If the cultivator smokes at idle, you need to:

  1. Inspect and clean the air filter.
  2. Check the oil level. Drain off excess if necessary.

If the engine fires, the tension in the working spring may be the cause. In case of malfunction, it should be adjusted.

How to install a generator

In order to install an electric generator, you must do the following:

  1. The generator has 4 wires, 2 of which are of blue color... An energy converter must be connected to these 2 wires.
  2. The black wire should be connected to the motor.
  3. Connect the remaining red wire to the parts responsible for external lighting and a beep.

The generator generates electrical energy that is fed to the rectifier. When starting the engine, the adjusted belt transmits the torque to the rotor part of the unit. In the electrical unit, a voltage is generated, from which the battery of the walk-behind tractor works.

The power of the selected generator should not exceed 220 V. It is recommended to choose a spare part, the power of which will correspond to the expected load.

The gearbox has 5 positions. When the user presses the gear lever, the fork disengages the clutch from the engagement position. When the user drops the handle, it returns to its original position.

To this mechanism functioned properly, it is necessary not to make sudden movements and in time to clean all parts from dirt.

The gearbox is responsible for transmitting torque from the engine to the wheels and additional equipment... In order to avoid disruptions during work, you need to carry out maintenance motor.