The causes and countermeasures of the common faults of small four-wheel tractors and their countermeasures Pan Shuliang
1. Triangle belt slipping If the belt or pulley adheres to oil, use gasoline to clean; if the belt is too loose, adjust the tightness of the belt according to the regulations; if the belt wear is too large, you should replace the new one.
2. Clutch slipping If the active piece, pressure plate, and driven friction plate adhere to oil, apply gasoline to clean; if the friction plate wears too much, replace the friction plate; if the spring strength is not enough, you should replace the new spring; if due to separation There is no gap between the lever and the release bearing and the clearance should be adjusted to between 0.1 and 0.5 mm.
3. The separation bearing heat is mainly due to the clearance between the release bearing and the separation lever is too small, should be adjusted to the gap between 0.1 ~ 0.5 mm.
4. Incomplete separation of the clutch If the clearance between the separating lever head and the release bearing is large, the clearance should be adjusted to between 0.1 and 0.5 mm. If the free travel of the clutch pedal is large, the operating lever should be adjusted.
5. If the clutch bearing heat is due to poor lubrication, it should be added with lubricating oil; if the belt is too tight, the belt tightness should be adjusted to the specified value.
6. If the brake fails If the friction plate adheres with oil, apply gasoline to clean; if the friction plate is excessively worn, replace the friction plate; if it fails to operate, re-adjust the brake.
7. If the gear is out of gear, the gear should be replaced. If the bearing is damaged, the new bearing should be replaced. If the positioning is lost due to self-locking, the new spring should be replaced. If the gear is in a half-engagement state, the gear should be replaced. Adjust the joystick so that the gear is fully engaged.
8. If the oil leakage of the gear box is due to the damage of the oil seal and paper pad, replace the oil seal and the paper pad; if the screw of the bearing cover is loose, tighten the screw; if the ventilation hole is blocked, the ventilation hole should be opened; if the direction of the oil seal is incorrect The oil seal should be reinstalled; if the oil seal self-locking lock spring falls off, the self-locking lock spring should be reinstalled.
9. There is noise or knocking sound in the gearbox If burrs on the gear end surface are to be removed, burrs should be removed. If the lubricant is not enough, lubricant should be added. If the bearing is damaged, the bearing should be replaced; if excessive gear wear or tooth surface A bit of eroded spalling, should replace the gear.
10. Suspension can not be lifted If there is air in the oil circuit, the connector bolts should be deflated; if the check valve is dirty, the check valve should be cleaned; if the plug is broken, it should be replaced. Embolization pins.
Author unit: Pan Shuliang (Ministry of Hydropower and Agricultural Machinery, Zigong City, Sichuan Province, 643000)
1. Triangle belt slipping If the belt or pulley adheres to oil, use gasoline to clean; if the belt is too loose, adjust the tightness of the belt according to the regulations; if the belt wear is too large, you should replace the new one.
2. Clutch slipping If the active piece, pressure plate, and driven friction plate adhere to oil, apply gasoline to clean; if the friction plate wears too much, replace the friction plate; if the spring strength is not enough, you should replace the new spring; if due to separation There is no gap between the lever and the release bearing and the clearance should be adjusted to between 0.1 and 0.5 mm.
3. The separation bearing heat is mainly due to the clearance between the release bearing and the separation lever is too small, should be adjusted to the gap between 0.1 ~ 0.5 mm.
4. Incomplete separation of the clutch If the clearance between the separating lever head and the release bearing is large, the clearance should be adjusted to between 0.1 and 0.5 mm. If the free travel of the clutch pedal is large, the operating lever should be adjusted.
5. If the clutch bearing heat is due to poor lubrication, it should be added with lubricating oil; if the belt is too tight, the belt tightness should be adjusted to the specified value.
6. If the brake fails If the friction plate adheres with oil, apply gasoline to clean; if the friction plate is excessively worn, replace the friction plate; if it fails to operate, re-adjust the brake.
7. If the gear is out of gear, the gear should be replaced. If the bearing is damaged, the new bearing should be replaced. If the positioning is lost due to self-locking, the new spring should be replaced. If the gear is in a half-engagement state, the gear should be replaced. Adjust the joystick so that the gear is fully engaged.
8. If the oil leakage of the gear box is due to the damage of the oil seal and paper pad, replace the oil seal and the paper pad; if the screw of the bearing cover is loose, tighten the screw; if the ventilation hole is blocked, the ventilation hole should be opened; if the direction of the oil seal is incorrect The oil seal should be reinstalled; if the oil seal self-locking lock spring falls off, the self-locking lock spring should be reinstalled.
9. There is noise or knocking sound in the gearbox If burrs on the gear end surface are to be removed, burrs should be removed. If the lubricant is not enough, lubricant should be added. If the bearing is damaged, the bearing should be replaced; if excessive gear wear or tooth surface A bit of eroded spalling, should replace the gear.
10. Suspension can not be lifted If there is air in the oil circuit, the connector bolts should be deflated; if the check valve is dirty, the check valve should be cleaned; if the plug is broken, it should be replaced. Embolization pins.
Author unit: Pan Shuliang (Ministry of Hydropower and Agricultural Machinery, Zigong City, Sichuan Province, 643000)
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