Hydraulic system repair for Dong Feng 244
The hydraulic system repair for the Dong Feng 244 tractor was carried out due to a malfunction in the rear-mounted implement operation.
Tractor malfunction description
The rear-mounted implement could be lifted normally, but lowering was obstructed and delayed. No control adjustments had any effect on the issue.
It was suspected that dirt and blockages in the hydraulic valves might be causing the problem. The tractor had approximately 200 operating hours and was used primarily for snow clearing.
Hydraulic system maintenance for Dong Feng 244
The following maintenance and repair work was performed:
- Disassembly and seat removal.
- Cleaning and purging of hydraulic lines and filters. The system was flushed, and a new rubber-metal gasket was installed after removing the plug.
- Inspection of hydraulic fluid and filters. A significant amount of dirt and metal particles was found in the hydraulic system. The hydraulic filters were thoroughly cleaned and flushed.
- Replacement of hydraulic fluid.
- Use of specialized tools. A vacuum oil extractor and a compressed air gun were used for fluid replacement and system cleaning.
The repair process prevented the need for extensive disassembly, including cabin removal. As a result, the hydraulic system was restored to proper working condition, and the rear implement lowering function was fully restored.