106675-4153/6152721211 FUEL INJECTION PUMP FOR SA6D125
1）Product Name: fuel injection pump
2）Model No.:106675-4153/6152721211
3）Delivery time:3-5 days
4）Payment Methods: T/T, Western Union, Paypal, Alibaba
5）Origin: made in China
6）Application: SA6D125 engine
- Fast Delievery
- Quality Assurance
- 24/7 Customer Service
Product Introduction
|
Item |
Specification |
|
Compatible Engine |
Komatsu SA6D125 Industrial Diesel Engine (Common in 20-30ton excavators e.g., PC300/360) |
|
Part Number |
106675-4153 (Komatsu Genuine) |
|
Pump Type |
Inline Plunger-Type (6 independent pumping elements) |
|
Primary Function |
Generates 20-25MPa high-pressure fuel with precise timing/volume for injectors |
Technical Specifications
1. Structural Diagram
Plunger Diameter: 9.5mm (Chromium-plated for wear resistance)
Delivery Valve: Constant-volume unloading type (prevents secondary injection)
Governor: RSV Mechanical Governor (with torque correction spring)
2. Critical Performance Parameters
|
Parameter |
Standard Value |
Tolerance |
|
Rated Fuel Delivery (Full Load) |
78±1.5 ml/1000 cycles |
±1.5% |
|
Idle Fuel Delivery |
18±1 ml/1000 cycles |
±5% |
|
Pre-stroke |
2.85±0.05mm |
±0.02mm |
|
Peak Pressure |
≥22MPa (New pump) |
-10% |
3. Anti-Counterfeiting Features
Pump Body Casting Mark: "K" + 6-digit steel stamp (e.g., K238175) on lower right
Governor Cover Label: Laser-engraved diamond grid hologram
Plunger Material: Dark gray silicon nitride ceramic finish (counterfeits appear bright silver)
Common Failure Modes & Solutions
⚠ Top 3 Failures
Plunger Seizure (Symptom: Sudden engine shutdown)
Root Cause: Acid corrosion from high-sulfur fuel
Solution: Replace all 6 plunger-barrel sets as a complete unit + flush fuel system
Governor Flyweight Wear (Symptom: RPM fluctuation ±200rpm)
Diagnosis: Test idle stability curve on calibration bench
Repair: Re-bushing hinge pin holes + dynamic balancing of weights
Delivery Valve Leakage (Symptom: Hard starting/hot stall)
Emergency Fix: Loosen high-pressure line nut 180° (disable affected cylinder)
Professional Repair: Valve seat regrinding (surface roughness ≤ Ra0.1)
Golden Maintenance Rules
Fuel Filtration: Mandatory 10μm + 2μm dual-stage filters (Water separation >95%)
Calibration Interval: Factory recalibration every 8,000hrs (even if operational)
Storage Protocol: Fill pump with ISO VG32 preservative oil if idle >3 months
Case Warning: A PC360 excavator suffered catastrophic engine failure ($15,000+ repair) due to aftermarket pump governor failure causing overspeed!
Your doubts
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Customer feedback
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Bank Transfer
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Shipping Made Simple
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Flexible logistics
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No matter the destination, we tailor the best shipping solution for you.
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