Loader Troubleshooting
Apr 11,2025
1. The hydraulic oil in the gearbox increases, and the hydraulic oil in the working hydraulic oil tank decreases
cause of issue:
The oil seal of the working pump or steering pump is aging, and the axial clearance or radial barrier of the working pump or steering pump shaft is too large.
Method of exclusion:
Replace the working pump or steering pump oil seal, repair the calibration oil pump or replace the oil pump.
2. The hydraulic oil in the gearbox is reduced, and the hydraulic oil in the working hydraulic oil tank is increased
cause of issue:
The oil inlet filter of the working oil tank is blocked or the suction pipe of the oil pump is blocked.
Method of exclusion:
Clean or replace the oil inlet filter and replace the oil pump suction pipe.
3. After the gearbox is in neutral or in gear, the shifting pressure is low and the whole machine is powerless to walk.
cause of issue:
The transmission oil in the gearbox is not enough, the filter of the gearbox oil pan is blocked, the travel pump is damaged, the volumetric efficiency is low, the pressure reduction valve or pressure valve is not properly adjusted, and the travel pump suction pipe is aged or seriously broken.
Method of exclusion:
Add enough hydraulic oil in the gearbox to the center of the oil mark at idle speed, replace or clean the filter screen, replace the travel pump, re-adjust the pressure to reach the specified range, and replace the oil pipe.
4. During normal driving, the loader suddenly has no steering, and the steering wheel can be easily turned at the same time.
cause of issue:
The piston of the steering cylinder falls off, and the connecting sleeve of the steering column and the steering gear is broken or damaged.
Method of exclusion:
Replace steering cylinder.
5. The loader suddenly has no steering during normal driving, and the steering wheel cannot be moved at the same time.
Method of exclusion:
The steering pump roller key or the spline of the connecting sleeve is damaged, the one-way valve of the steering gear falls off (in the valve block), and the Ф8mn steel ball (one-way valve) in the steering gear fails. Replace the steering pump or connecting sleeve, and replace the valve block or one-way valve.
Eligible models
MLT738 is the latest telescopic handler truck launched by our company. With its high-horsepower engine, MLT738 has surging power and strong passability. MLT738 can easily handle various tasks in agriculture. At the same time, we can provide a variety of auxiliary tools, such as large-capacity grain buckets, pitchforks, round bale clamps, etc. , one-stop solution to all customer problems.
WL08 is the best solution for working in narrow spaces and narrow passages. And with this machine and a large number of accessories related to road construction, agriculture, and horticulture, a considerable amount of work can be carried out.The entire vehicle is made of pure iron, which is particularly suitable for forest and outdoor forest operations such as wood grabbing.This machine has a small turning radius and fast driving speed, and can be deployed in buildings as well as on paved and unpaved sites.
WL10 is the best solution for working in narrow spaces and narrow passages. And with this machine and a large number of accessories related to road construction, agriculture, and horticulture, a considerable amount of work can be carried out.The entire vehicle is made of pure iron, which is particularly suitable for forest and outdoor forest operations such as wood grabbing.This machine has a small turning radius and fast driving speed, and can be deployed in buildings as well as on paved and unpaved sites.
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