| Category | Specification |
|---|---|
| COGENG Set Number | CG-KOM-SET-20371730-71731 |
| OEM References | 203-06-71730 & 203-06-71731 |
| Set Components | 2 Complete Harness Assemblies |
| Wire Insulation | Oil-Resistant XLPE |
| Connector Rating | IP67 (Waterproof & Dustproof) |
| Temperature Range | -40°C to 125°C |
| Voltage Rating | 24V DC System |
| Quality Validation | 100% Individual & Paired Testing |
| Warranty Coverage | 18-Month Limited Warranty |
| NO | Number | Name | Qty |
| 1 | 203-06-71731 | WIRING HARNESS | 1 |
| 1 | 203-06-71730 | WIRING HARNESS | 1 |
| 2 | 08041-01000 | • FUSE, 10A | 16 |
| 3 | 08041-02000 | • FUSE, 20A | 4 |
| 4 | 04434-53411 | CLIP | 3 |
| 5 | 195-33-11220 | SPACER | 3 |
| 6 | 01010-81040 | BOLT | 3 |
| 7 | 01643-31032 | WASHER | 3 |
| 8 | 04434-51710 | CLIP | 2 |
| 9 | 195-33-11220 | SPACER | 2 |
| 10 | 01010-81040 | BOLT | 2 |
| 11 | 01643-31032 | WASHER | 2 |
| 12 | 01435-01016 | BOLT | 1 |
| 13 | 04434-53411 | CLIP | 1 |
| 14 | 01010-81020 | BOLT | 1 |
| 15 | 01643-31032 | WASHER | 1 |
| 16 | 08034-20519 | BAND | 4 |
| 17 | 04434-52310 | CLIP | 3 |
| 18 | 195-33-11220 | SPACER | 3 |
| 19 | 01010-81040 | BOLT | 3 |
| 20 | 01643-31032 | WASHER | 3 |
| 21 | 08193-30010 | CLIP | 1 |
| 22 | 08028-43030 | CABLE | 1 |
| 23 | 01010-81020 | BOLT | 1 |
| 24 | 01643-31032 | WASHER | 1 |
| 25 | 04434-51910 | CLIP | 1 |
| 26 | 01010-81020 | BOLT | 1 |
| 27 | 01643-31032 | WASHER | 1 |
Complete power system shutdown required before installation
Install both harnesses as matched set for optimal performance
Follow OEM routing diagrams for each component
Ensure all inter-harness connections are properly engaged
Perform comprehensive system diagnostics after installation
OEM Reference: Direct replacement for Komatsu Part Numbers 203-06-71730 and 203-06-71731.
Key Function: This is the Internal Engine Wiring Harness, managing the complex signal and power distribution for the electronic engine control system.
Primary Application: Specifically designed for the Komatsu PC130-7 Hydraulic Excavator (Check serial number range for exact fitment).
Critical Connectivity: Provides reliable links to:
Engine Sensors (Pressure, Temperature, Speed)
Fuel Injectors and Actuators
Starter and Alternator Connections
ECU Communication Port
Premium Construction: Constructed using high-temperature, oil-resistant insulation and quality copper conductors to resist engine heat, vibration, and chemical degradation inherent in the engine compartment.
Tested Reliability: Each harness is rigorously tested for proper continuity, insulation resistance, and accurate connector pin-out to guarantee flawless communication and power delivery, eliminating intermittent electrical faults.
A: The COGENG wiring harness set, covering part numbers 203-06-71730 and 203-06-71731, is designed for select Komatsu excavator models where these harness part numbers are specified, including PC130-7 and PC130F-7 applications. These two harnesses typically represent complementary sections of the machine's electrical system. Always verify both part numbers against your machine's parts manual or original harness tags to confirm exact compatibility before ordering.
Q: What are the symptoms of a failing wiring harness on Komatsu equipment?
A: Common symptoms include intermittent electrical faults, multiple warning lights illuminated on the monitor panel, unresponsive hydraulic or engine controls, erratic gauge or sensor readings, CAN bus communication errors, specific functions not responding, or unexpected machine shutdowns. Harness degradation is often caused by prolonged heat exposure, vibration, moisture ingress, and connector terminal corrosion in demanding operating environments.
Q: What is the difference between the 203-06-71730 and 203-06-71731 harnesses?
A: In a two-harness set, the part numbers typically represent different harness sections. Common configurations include one serving as the main chassis harness and the other as the engine harness, or one as the front harness and the other as the rear harness. Each harness handles distinct circuits and connectors, and both work together to form the machine's complete electrical system
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