Fault Phenomenon: Komatsu D375A dozer track frequently detaches while driving, tension cylinder cannot hold pressure.

Troubleshooting Process:
– Checked tension cylinder: piston seal failed.
– Checked check valve: pressure holding valve internal leakage.
– Checked grease fitting: grease fitting clogged.
– Checked track shoes: pins and bushings severely worn.

Root Cause: The piston seal inside the track tension cylinder failed, causing grease pressure to leak and inability to maintain tension.

Required Parts: Track tension cylinder seal repair kit.