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Hydraulic Pump repair kit
for Komatsu
0445020150 5264248
Diesel
FAQ
QA：What's the difference between injection pumps and regular fuel pumps?
Injection pump: High-pressure (1000Bar+), diesel-only, controls power output.
Fuel pump: Low-pressure (3-5Bar), just delivers fuel to the engine.
QB： Must I replace a leaking water pump immediately？
Minor leak: Temporary sealant works (but reduces lifespan).
Spraying leak: Stop engine NOW! Risk of overheating damage.
QC： How to troubleshoot a diesel pump that won't prime?
Verify fuel level (seriously, some forget to refuel!)
1. Check for air in lines (bleed at filter)
2.Test inlet pressure (should be ≥0.3Bar)
QD： Key parameters when selecting a water pump?
Flow rate: e.g. 100L/min (too small causes overheating)
Head: e.g. 15m (insufficient = poor coolant circulation)
Shaft material: Stainless steel lasts 3x longer than cast iron
QE：Can high-pressure pumps use regular diesel?
Short-term: Yes, but reduces lifespan by 30%+.
Long-term: Must use EN590 low-sulfur diesel.
FAQ
QA：What's the difference between injection pumps and regular fuel pumps?
Injection pump: High-pressure (1000Bar+), diesel-only, controls power output.
Fuel pump: Low-pressure (3-5Bar), just delivers fuel to the engine.
QB： Must I replace a leaking water pump immediately？
Minor leak: Temporary sealant works (but reduces lifespan).
Spraying leak: Stop engine NOW! Risk of overheating damage.
QC： How to troubleshoot a diesel pump that won't prime?
Verify fuel level (seriously, some forget to refuel!)
1. Check for air in lines (bleed at filter)
2.Test inlet pressure (should be ≥0.3Bar)
QD： Key parameters when selecting a water pump?
Flow rate: e.g. 100L/min (too small causes overheating)
Head: e.g. 15m (insufficient = poor coolant circulation)
Shaft material: Stainless steel lasts 3x longer than cast iron
QE：Can high-pressure pumps use regular diesel?
Short-term: Yes, but reduces lifespan by 30%+.
Long-term: Must use EN590 low-sulfur diesel.
