Repair Cases

Komatsu GD825 Grader Front Push Blade Cylinders Out of Sync

Fault Phenomenon: Komatsu GD825 grader front push blade raises unevenly, tilting left/right.

Troubleshooting Process:
– Checked flow divider motor: flow divider motor worn.
– Checked cylinders: one cylinder has internal leakage.
– Checked check valves: make-up check valves stuck.
– Checked mechanical: push blade linkage deformed.

Root Cause: The flow divider motor in the front push blade lift circuit is worn, causing unequal flow distribution to the two cylinders.

Required Parts: Flow divider motor assembly.

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