DX260-9C Excavator Machinery Parts 170402-00029 Excavator Travel Gearbox With Crawler Undercarriage

Primary Structural Component Parts Layout

Frequent Common Fault Manifestation Phenomena & Underlying Root Cause Factor Summary

• Unusual abnormal sound output generation / Unstable jittery running movement status function: Gear abrasion wear and surface pitting damage defect issues, bearing damage functional failure breakdown problems, lack shortage of lubricating oil fluid medium or oil contamination pollution defect issues, improper unsuitable gear meshing backlash gap size parameter.
• Oil seepage permeation and leakage functional malfunction trouble problems: Damaged worn oil seal ring component parts, housing structural fracture crack damage defect issues, excessive overfilled lubricant filling level height parameter, blocked clogged air‑vent breather opening outlet port.
• Slow‑moving torpid or weak rotational slewing performance function: Worn degraded gears and bearing component part assemblies, incomplete partial brake release operational action function, internal bypass flow leakage of hydraulic motor body unit assembly, non‑compatible mismatched gear transmission reduction ratio parameter.
• Overheating excess temperature rise problem condition issues: Inadequate insufficient oil volume quantity or degraded lubricant quality performance characteristics, overloaded heavy‑load working status condition modes, continuous persistent brake dragging friction resistance force energy, poor ineffective heat dispersion radiation efficiency performance characteristics.
• Gear skipping slipping / Tooth fracture physical damage accident incidents: Impact‑induced heavy load pressure force energy, foreign impurity particle infiltration into gearbox interior mechanism component parts, fatigue wear aging degradation damage issues, shaft misalignment installation deviation errors during assembly work procedure processes.