Agricultural truck clutch failure

1, the clutch is not completely separated, power can not be cut off in a timely manner (1) failure symptoms. When the clutch pedal is depressed, the gear shift lever is difficult to catch, and there is a sound of gears colliding with each other in the gear box. After the gear is released, the agricultural vehicle can walk slowly without stopping the clutch pedal. When the vehicle is stopped, the clutch pedal is depressed and the vehicle still feels a stop. Difficulty, shift lever is not easy to remove. (2) Possible causes of failure. The clutch pedal is not properly adjusted and the free stroke is too large. When the pedal is depressed, the clutch cannot be completely separated; the friction plate is warped, or the heights of the three separate levers are adjusted inconsistently, and are not on the same plane, resulting in unilateral separation and friction. Partial wear; The replacement of the new friction plate is too thick, after adjusting the free stroke, the total stroke is limited, the friction plate's separation stroke is too small; friction splint assembly's internal spline and the first axis rusted each other, or the first axis The spline wears badly and generates pits. When the pedal is pressed, the friction plate assembly cannot slide smoothly along the first shaft spline groove, and the power separation is incomplete; the friction plate assembly is installed on the front and back, because the internal friction of the friction plate assembly The length and length of the key sleeve are asymmetric. If the long end is mounted on the flywheel, it will cause incomplete separation; the rolling bearing of the clutch shaft on the flywheel will rust or get stuck, and the flywheel and the clutch shaft will be integrated to make the clutch inoperative or separate. Unclear. 2, clutch slip, power can not be normally transmitted (1) symptoms of failure. Agricultural vehicles are slow when starting; during driving, when the engine speed increases, the vehicle speed cannot be accelerated; the agricultural vehicle starts with a load without changing the throttle, and the engine speed does not change significantly; the agricultural vehicle is loaded or when When the load increases, it will stop; friction plate smokes due to strong friction. (2) Possible causes of failure. Clutch pedal stroke is not properly adjusted, free stroke adjustment is too small, there are compression of the three separate levers, so that the friction plate shows a semi-separated state; oil on the friction plate, so that the friction coefficient decreased significantly, can not withstand the full torque of the engine; friction plate wear After thinning, the pressure spring's pressure on the friction pair decreases; the friction plate rivets are exposed, the pressure plate can not contact with the friction plate well, the contact area is reduced, and the friction torque is reduced; the driver's foot is placed on the clutch when working On the pedal, it causes slippage; the spring force of the pressure spring weakens. 3, abnormal sound when the clutch works (1) fault symptoms. In the process of starting, shifting, and parking the agricultural vehicle, the clutch issued an abnormal noise, and the clutch inspection window was opened. Sometimes the contact points of the three separation levers were worn out or damaged. (2) The cause of the failure. Clutch release bearing lacks the shaft, wears out, seizes dead, in the work process, 3 separation lever work end points and the separation axle sand contact, the part produces the friction and gives out the sound; The friction plate pressure plate and the splined cover rivet are loose, the aperture enlarges, When it is in use, a percussion sound is generated. When the friction plate rivet is exposed, the pressure plate and the rivet frictionally contact each other during engagement; the return spring of the release lever falls off, and the spring collides and swells in the clutch assembly. 4. When the clutch starts to work, it shakes, causing the agricultural vehicle to tremble when it starts (1). When the agricultural vehicle started, the clutch friction plates were not engaged and the agricultural vehicle was shaken. (2) Possible causes of failure. The first shaft (clutch shaft) of the gearbox has too much error in coaxiality with the crankshaft, chattering occurs at the time of engagement; the friction plate is warped or the pressure of the platen spring is uneven, the separation lever height is adjusted inconsistently, or oil and mechanical impurities are formed on the friction plate. Such as, may cause the clutch to produce intermittent contact when engaged, causing the agricultural vehicle to tremble at the start.