| Parameter | Specification |
|---|---|
| Part Number | 20Y-60-11710 |
| Product Name | Komatsu Solenoid Valve |
| Supplier / Channel | COGENG (Factory Direct Supply) – OEM-Spec Replacement Part |
| Valve Type | Electro-Hydraulic Solenoid Valve (PPC Pressure Proportional Control or On/Off switching, application dependent) |
| System Voltage | 24V DC (Standard for Komatsu mid-to-large excavators and dozers) |
| Connector Type | 2-Pin Weather-Resistant Sealed Connector (Deutsch or Sumitomo equivalent) |
| Typical Function | Hydraulic Pilot Pressure Control, Pump Displacement Control, or Transmission Clutch Modulation |
| Typical Compatible Models | Komatsu PC200-7/8, PC220-7/8, PC300-7/8, D65EX-15/16, WA380-5/6 and other construction/mining equipment |
| Coil Resistance (Approx.) | 10–30 Ω (varies by exact application; measure and compare to shop manual spec) |
| Working Pressure Range | Up to 50 bar (Pilot/Control circuits) |
| OEM Part Number | 20Y-60-11713 / 20Y6011713 |
| Brand | COGENG (Premium Aftermarket) |
| Compatible Models | Komatsu HD785-7, HD605 Rigid Dump Trucks |
| Valve Function | Transmission Shift Control Solenoid Valve |
| Protection Rating | IP69K (High-Pressure / High-Temp Washdown Proof) |
| Solves | Gear Slippage, Harsh Shifting, Delayed Engagement |
|
NO |
Number |
Name |
Qty |
|
1 |
20Y-60-11713 |
SOLENOID VALVE |
1 |
|
1 |
20Y-60-11712 |
SOLENOID VALVE |
1 |
|
1 |
20Y-60-11711 |
SOLENOID VALVE |
1 |
|
1 |
20Y-60-11710 |
SOLENOID VALVE |
1 |
|
1 |
20Y-60-11673 |
SOLENOID ASS'Y |
1 |
|
1 |
20Y-60-11672 |
SOLENOID ASS'Y |
1 |
|
1 |
20Y-60-11671 |
SOLENOID ASS'Y |
1 |
|
1 |
20Y-60-11670 |
SOLENOID ASS'Y |
1 |
|
2 |
20Y-60-11810 |
BLOCK |
1 |
|
3 |
07002-01423 |
O-RING |
3 |
|
4 |
205-62-55270 |
NIPPLE |
3 |
|
5 |
07102-20306 |
HOSE |
2 |
|
6 |
07102-20306 |
HOSE |
1 |
|
6 |
07102-20307 |
HOSE |
1 |
|
7 |
07002-02034 |
O-RING |
1 |
|
8 |
07235-10315 |
ELBOW |
1 |
|
9 |
01010-51230 |
BOLT |
2 |
|
10 |
01643-31232 |
WASHER |
2 |
1. Remove Old Valve
Depressurize hydraulic system
Disconnect battery negative terminal first
Unplug wiring harness
Unscrew valve body counterclockwise (Max torque: ≤35 N·m)
2. Install New Valve
Apply Molykote G-5002 (included) on threads
Step-torque tightening sequence:
Stage 1: 15 N·m
Stage 2: 30 N·m
Final: 42 ±3 N·m
3. Wiring Calibration
Terminal A: CAN_H (Yellow) → Gateway Port J1939-12
Terminal B: CAN_L (Green) → Gateway Port J1939-13
Terminal C: 24V+ (Red) → Fuse Box #24 (30A)
Terminal D: GND (Black) → Chassis Ground Point
Pre-Start Verification
Measure resistance between terminals:
C↔D: 10Ω ±0.5Ω @ 20°C
A↔B: 120Ω (CAN termination)
Post-Install Test
Start engine → Verify CAN signal:
KOMTRAX Tool: PGN 65263 ≥ 80% signal strength
Monitor hydraulic ripple:
Acceptable range: < ±0.3 MPa @ idle
Q: What causes transmission gear slip in a Komatsu HD785-7 dump truck?
A: Often caused by a failing shift solenoid valve (20Y-60-11713) that cannot maintain proper clutch pack pressure. Contamination in the valve body or degraded solenoid response leads to slippage under heavy load.
Q: What does IP69K rating mean for mining truck solenoids?
A: IP69K is the highest protection rating, meaning the valve is dust-tight and can withstand close-range high-pressure, high-temperature steam cleaning—essential for the extremely dirty, muddy conditions in open-pit mining operations.Contact COGENG
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