1. Loader maintenance. First of all, it depends on the pressure of the gearbox. If the pressure is insufficient, then it is pressurized by adding a control valve adjustment pad. The construction is tested by replacement parts. If the above is good. Then you do n’t want to try the filter element when you remove the oil filter of the gearbox, or try to remove the filter element of the bottom case of the gearbox,
If the pressure is good and normal, change the variable speed pump, remember to tighten the bolts of the oil inlet pipe.
The above method does not work, you can only recheck the gearbox
In fact, the output power of the engine is also very important. The gearbox is also underpowered. It is recommended to calibrate the fuel injection pump.
1; clean the oil pan filter
2; cleaning the gearbox filter
3; cleaning cooler
4; check whether the transmission oil is enough
5; check whether the transmission oil is too viscous
Causes and maintenance methods of failure of insufficient power of loader engine
2 Common failures and causes of small loaders
(1) It is difficult or impossible to start. The main symptoms or causes are: a. The engine of the starter has a normal speed, but it does not catch fire, or it may catch fire after a long start. b. The electrical system is faulty, mainly because the battery voltage is too low to cause a fire without starting. c. The air intake system is faulty, mainly because the air intake resistance exceeds the technical specifications, resulting in difficulty in starting or failure to start without ignition. d. The crankshaft does not rotate, which may be the shaft holding, biting cylinder, or other abnormal conditions, which can cause difficulty in starting or cannot start. In addition, sometimes the oil level in the fuel tank is too low, which can cause difficulties in starting or failure to start.
(2) Main symptoms or causes of abnormal clutch operation: (1) Clutch slippage. Mainly caused by the following reasons: one is that the free travel of the clutch pedal is too small, causing the clutch to slip; the second is that the pressure spring is too weak to allow the clutch to return to the position in time, causing the clutch to slip; the third is the oil on the friction plate surface of the clutch, which causes friction It is greatly reduced, and slip occurs when the clutch is working. Fourth, the friction plate is severely worn or overdue, which greatly reduces the friction force and causes the clutch to slip.
(3) The clutch trembles when the clutch is engaged. Due to the severe wear of the spline that fixes the clutch shaft or the sleeve, the shaft and the sleeve loosen, resulting in slight slippage, and sometimes even cannot rotate synchronously, making the clutch tremble when the clutch is engaged; again, fixed Loose tightening bolts of the clutch can also make the clutch tremble when the clutch is engaged; The third is accidentally sticking grease to the friction surface of the clutch when removing or installing the clutch, resulting in a slip phenomenon, resulting in a trembling phenomenon when the clutch is engaged; Fourth, the adjustment of the separation lever of the clutch is not uniform enough, that is, some separation levers have a large elastic force, and some are too small, resulting in jitter when the clutch is engaged.
(4) The clutch is not easy to disengage. There are two main reasons, one is that the free travel of the pedal is too large; the other is the improper adjustment of the separation lever. For both reasons, clutch disengagement may be incomplete. (5) The transmission often jumps. There are three main reasons. First, the positioning spring of the fork shaft is weak or invalid; second, the wear of the positioning groove of the fork shaft exceeds the limit; third, the wear of the internal and external splines of the transmission causes the gear and shaft to not match and cannot be synchronized, so it appears The phenomenon of skipping gears.
(6) The transmission works abnormally. ① The transmission noise is abnormal. Due to the excessive wear of the gears and the excessive tooth flank clearances, the gear meshing clearances increase during operation, causing a certain amount of wandering and a collision sound. ② The gear bearing wear is overdue, which makes the axial and lateral gaps larger, and the amount of activity during operation increases, resulting in abnormal transmission noise. The fastening bolts of the transmission are loose, resulting in abnormal transmission noise during operation; splines of gears and gear shafts Excessive wear can also cause the transmission to produce abnormal noises. In addition, the lack of lubricating oil caused dry friction in various parts of the transmission, and also made abnormal noises. ③ Gear shifting is not flexible. The main reason is that the long-term operation of the transmission gear causes burrs on the gear teeth, resulting in inflexible shifting of the transmission gear.
