Swing Motor Reducer Assembly for Komatsu PC1250-7 PC1250-8 Excavator 21N-26-00120 21N-26-00070
Product Verification & Compatibility
Verify OEM part numbers and confirm assembly compatibility with models, including swing motor, reducer, and parking brake components.
Quality Assurance Requirements
- Request bench test reports for pressure, rotating torque, and internal leakage for both new and remanufactured units
- For remanufactured assemblies, verify replacement of pistons, valve plates, planetary gears, bearings, and oil seals
Inspection & Handling Procedures
- Inspect housing for cracks and check oil seal integrity upon arrival
- Protect ports during handling to prevent contamination
- Secure assembly during transportation to prevent impact damage to shafts and gear components
Installation & Testing Guidelines
- Clean connecting pipelines before installation, replace hydraulic filters, and properly bleed air from system
- Test swing speed, swing torque, parking brake function, and check for oil leakage after installation