The transmission is one of the important transmission parts of the loader. If a fault occurs, it will seriously affect the working efficiency of the loader. Today, we have sorted out the common faults and causes of the loader transmission, hoping to help you
1. When shifting gears, the reasons for not being able to enter the gear smoothly may be:
(1) The pressure of the pressure valve is too low;
(2) The hydraulic pump is not working properly and the seal is not good;
(3) The hydraulic pipeline is blocked;
(4) The clutch seal is damaged or leaking;
(5) The gear lever is not in place.
2. When the transmission is shifting, the reasons for not being able to disengage the gear may be:
(1) The piston ring is swollen;
(2) The clutch friction plate is burned;
(3) The clutch return spring fails or is damaged;
(4) The return oil pipeline is blocked.
3. The loader is running weakly or even unable to move even though the gear is engaged. The reasons may be:
(1) The friction plate is severely worn and the gap is too large;
(2) The clutch automatic emptying valve is not sealed tightly, causing the pressure to drop;
(3) The shift control valve pipeline is blocked;
(4) The cut-off valve cannot return to its position;
(5) The shift valve positioning spring is fatigued or broken, and the steel ball bounces;
(6) The clutch piston ring and seal ring are severely worn, causing serious leakage.
4. The reasons for the low operating pressure may be:
(1) Insufficient oil in the gearbox oil pan;
(2) Oil leakage in the main oil channel;
(3) The gearbox filter is blocked;
(4) The steering pump (or hydraulic pump) is damaged, causing serious internal leakage;
(5) The gearbox pressure regulating valve pressure is improperly adjusted;
(6) The gear shift pressure valve spring fails or breaks. The public account Zhizao Daguan focuses on sharing relevant theoretical knowledge in the engineering machinery manufacturing industry.
5. The reasons for the automatic gearshift or random gearshift may be:
(1) The shift control valve positioning device fails. The main reason for the failure is that the positioning steel ball is severely worn or the spring fails;
(2) The position and length of the shift lever change due to long-term use, and the lever proportion is inaccurate, causing the operating position to deviate, thus causing misalignment.
