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XCMG GR135 Motor Grader Injection Pump O-Ring Repair Kit 4994681 + 001
FUNCTION
1. Prevent Diesel Leakage: Replace O-rings at all pump body interfaces, plungers, valves, and other critical points to prevent external diesel leakage or internal oil crossover.
2. Restore Sealing Integrity: Restore the injection pump's pressure-holding capability to ensure proper high-pressure fuel delivery, thereby enhancing injection precision and stability.
3. Extend Injection Pump Lifespan: Mitigate issues-such as pump body wear, unstable oil pressure, or diesel contamination of engine oil-that result from seal failure, thereby reducing maintenance costs.
4. Improve Engine Performance: Indirectly ensure stable engine operation by minimizing problems caused by injection pump malfunctions, such as starting difficulties, insufficient power, excessive black smoke, or increased fuel consumption.
Installation Locations
1. Pump body-to-engine mounting flange interface
2. Oil inlet / Fuel supply pump interface
3. At the oil outlet valve (high-pressure fuel line fitting)
4. Plunger sleeve / Pump core assembly seal
Performance Advantages
| Category | Specific Advantages | Description / Benefits |
|---|---|---|
| Sealing Performance | Reliable high-pressure sealing, prevents diesel leakage | Uses oil-resistant and pressure-resistant rubber material, effectively solves seepage at pump body, delivery valves, plungers and other areas, maintains stable high-pressure fuel delivery |
| Engine Performance | Restores injection pressure and accuracy | After replacement, oil pressure is stable, engine starts faster with better response, reduces power loss and black smoke |
| Service Life Extension | Significantly extends the life of the injection pump assembly | Prevents diesel-fuel mixing with engine oil and internal wear, can extend pump life by 30%-50% or more |
| Cost Effectiveness | Low cost, high cost-performance ratio | Only need to replace the repair kit instead of the expensive complete pump, saving over 70% of repair costs |
| Fuel Economy | Reduces fuel consumption, improves combustion efficiency | Better sealing leads to more precise injection, improves fuel utilization, fuel consumption can be reduced by about 5-8% |
DETAILS
| DESCRIPTION | Injection Pump O-Ring Repair Kit | PART NUMBER | 4994681 + 001 |
| WEIGHT |
0.5 kg |
VOLUME |
15cm × 10cm × 5cm |
| TRUCK MOLDE | XCMG | QUALITY | Copy,High Copy, OEM,Original |
| MOQ | 1 | WARRANTY | 1 year |
| PAYMENT | TT/WESTEN UNION | SHIPMENT | by air/sea/railway |
| BRAND | SINOSACHS | PLACE OF ORIGIN | JINAN CITY,CHINA |
| STOCK | IN STOCK | APPLICABLE SITE | ENGINE |
| PACKAGE | Carton/Woodenbox | PORT OF LANDING | Qingdao Port,China |
Maintenance & Replacement Recommendations
1. Inspection Frequency: Inspect the exterior of the fuel injection pump every 500 hours or every 6 months for any signs of seepage or fuel leaks.
2. Fuel Quality: Use clean diesel fuel that complies with Cummins standards, and replace the fuel filter regularly to prevent impurities from accelerating O-ring wear.
3. Environmental Adaptation: Under dusty, high-temperature, or humid operating conditions, shorten the inspection interval to every 300 hours.
4. Preventive Measures: Avoid prolonged engine idling or overload operation, and maintain normal operating temperatures to minimize the thermal aging of seals.




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