clutch

Clutch slipping. The surface of the friction plate is oily, mainly due to the damage of the sealing device such as the oil seal, leakage of oil, or improper maintenance and excessive oil injection. The source of oil contamination should be identified and eliminated before cleaning. The clutch clearance is too small or there is no clearance and should be readjusted. The spring is broken or the spring force is weakened and the spring should be replaced. If the wear is not large, the rivet is buried in a depth of not less than 0.5 mm and it can be replaced. If rivets loosen, they should be riveted or replaced with new ones.

The clutch is not clear. When the clutch pedal is pressed to the end, the power cannot be completely cut off, the gear is difficult to catch or there is a strong sound of teeth. Clutch free stroke is too large, small brake separation clearance is too small, or the main clutch separation clearance is too small (double acting clutch), resulting in clutch work stroke is insufficient, so that the clutch is not clear, should be adjusted correctly. The inner ends of the three separation levers are not on the same plane, and individual compression springs become soft or break, which causes the pressure plate to become skewed when disengaged, and the clutch is not clear. The spring should be adjusted or replaced. Due to the severe wear of the clutch bearing and other reasons, the concentricity of the crankshaft and the clutch shaft is damaged, which causes the warping deformation of the deflecting steel plate of the driven plate and the breakage of the friction plate, so that the clutch is not separated clearly. The yaw of the driven plate shall be further ascertained. If necessary, the driven steel plate shall be corrected and the friction plate replaced. Due to over-thickness of friction plate and improper installation, the effective working stroke of the clutch is reduced and the separation is unclear. The friction plate is too thick to be replaced, or a spacer is added between the clutch cover and the flywheel to make up for it.

Shift

For a tractor equipped with a single-cylinder engine, reduce the throttle before shifting, and then shift gears until the speed is significantly reduced. For tractors equipped with multi-cylinder engines, the two-legged clutch method should be used when shifting gears. That is, the throttle should be reduced first. After the vehicle speed is reduced, the clutch pedal is depressed, the gear shifter is set to neutral, and then the clutch pedal is increased to increase the throttle, and the speed is increased. Depress the clutch pedal and shift the shift lever into low gear. At this time, the top gear speeds of the low gear and passive gears are relatively close to each other and are easy to mesh.

Brake failure

When there is a brake failure, it should be decelerated immediately, and the engine must be dragged and braked to make use of steering to avoid obstacles. Observe that there are no obstacles on the roadside, which can help reduce speed or wide area can be reduced speed, parking. If there is no available terrain, the throttle should be lifted quickly, so that it is stepped down to a low gear, and the vehicle is restrained by sudden increase in the gear ratio and engine drag. If you are driving a hydraulic brake tractor, you can step on the brake pedal continuously and use point brakes to expect brake force accumulation to produce a braking effect. The speed of the engine is reduced on the basis of the engine's drag-resistance braking. At this time, it can be further decelerated by shifting gear or a parking brake of the tractor, and finally the tractor is driven to the side of the road. If the tractor speed is still faster, gradually tighten the parking brake lever to prevent the transmission from rotating.

Ventilation system

The main manifestations of lax valve closing are engine starting difficulties, power drop, and black smoke. The reason is that there is carbon deposition, ablation, speckles, and even peeling between the valve and the valve seat. The light can be reamed on the valve seat and light milled, and then the two are ground. In severe cases, the valve and valve seat must be replaced. The gap between the valve stem and the valve guide tube is not correct. The reason is that the clearance is too large, the valve is shaken, and the seal is poor when closed. It may also be that the gap is too small and the valve is stuck in the conduit, making the valve close or not closing. If the gap is too large, the valve guide tube should be replaced. If the clearance is too small, adjustments should be made. After the adjustment nut is loosened, the adjustment screw is unscrewed and the nut is locked.

Valve knocking is mainly reflected in the valve chamber can hear a clear "click" sound. This sound changes with the engine speed, metal knock can be heard at the cylinder head and cylinder block connection, but not crisp. The main reason is that the valve clearance is too large, so that the rocker strikes the top of the valve stem, and the valve clearance needs to be checked and adjusted. If the valve clearance is too small or the amount of valve drop is not enough, the valve may collide with the top of the piston. Adjust the valve clearance or repair the valve seat and then adjust the valve clearance.

Valve shedding occurs as the engine suddenly shuts off and there is a large crash sound. The main reason may be that the locking plate or the spring of the valve stem is detached due to vibration, the spring is broken, the valve stem is broken, etc. The parts should be shut down to eliminate this fault.

PET Anti Slip Tape

PET Anti Slip Tape

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