| Component | Specification | Application |
|---|---|---|
| COGENG Reference | CG-KOM-20Y0642731 | Dash-8 Main Harness |
| OEM Part Number | 20Y-06-42731 | Direct Replacement |
| Compatible Models | Komatsu PC270-8, PC270LC-8 | 27-Ton Class Excavators |
| Configuration Support | Standard & Long Undercarriage | Versatile Application |
| Wire Standard | Oil-Resistant XLPE | Heavy-Duty Construction |
| Connector Rating | IP67 (Dust Tight & Submersible) | Maximum Protection |
| Temperature Range | -40°C to 125°C | Standard Operating Range |
| System Voltage | 24V DC | Dash-8 Electrical System |
| Quality Validation | 100% Circuit Continuity Tested | Reliability Assured |
| NO | Number | Name | Qty |
| 1 | 20Y-06-42731 | Wiring Harness | 1 |
| 2 | 08020-20000 | • Diode | 2 |
| 3 | 08041-00500 | • Fuse, 5Amp. | 1 |
| 4 | 08041-01000 | • Fuse, 10Amp. | 14 |
| 5 | 08041-02000 | • Fuse, 20Amp. | 3 |
| 6 | 08041-03000 | • Fuse, 30Amp. | 2 |
| 7 | 19M-06-31720 | • Resistor | 1 |
| 8 | 20Y-06-31660 | • Fusible Link, 30Amp. | 1 |
| 9 | 22U-06-11270 | • Fusible Link, 65Amp. | 1 |
| 10 | HM6400-0012 | • F-Connector, Black | 2 |
| 10 | HM6409-0071 | • M-Connector, Black | 2 |
| 11 | HM6400-0013 | • F-Connector, Green | 2 |
| 11 | HM6409-0072 | • M-Connector, Green | 2 |
| 12 | HM6440-0129 | • F-Connector, Pink | 1 |
| 12 | HM6440-0128 | • M-Connector, Pink | 1 |
| 13 | HM6400-0016 | • F-Connector, Orange | 1 |
| 13 | HM6409-0075 | • M-Connector, Orange | 1 |
| 14 | 20Y-06-41283 | Cable | 1 |
| 15 | 08038-00035 | Cap, Terminal | 1 |
| 16 | 20Y-06-22872 | Cable | 1 |
| 17 | 08038-06031 | Cap | 1 |
| 18 | 08088-30000 | Switch, Battery Relay | 1 |
| 19 | 08038-00519 | Cap, Terminal | 2 |
| 20 | 08038-06031 | Cap | 1 |
| 21 | 600-815-2170 | Switch, Heater | 1 |
| 22 | 08038-00519 | Cap, Terminal | 2 |
| 23 | 600-815-8941 | Relay | 1 |
| 24 | 08028-CC065 | Cable, Battery | 1 |
| 25 | 20Y-06-41561 | Wiring Harness | 1 |
| 26 | 08034-20536 | Band | 8 |
Complete machine power shutdown required
Follow Dash-8 specific routing diagrams
Ensure proper connector engagement for all systems
Verify clearance for both standard and LC configurations
Perform comprehensive system diagnostics
Q: What Komatsu models use the 20Y-06-42731 wiring harness?
A: The COGENG 20Y-06-42731 wiring harness is a direct OEM replacement specifically designed for Komatsu PC270-8 and PC270LC excavator models. Always verify the part number stamped on your original harness tag and consult your machine's parts manual to confirm exact compatibility before ordering.
Q: What are the symptoms of a failing wiring harness on a Komatsu PC270-8 or PC270LC?
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. On Dash 8 series Komatsu excavators, which feature advanced electronic control systems, harness integrity is critical for proper machine operation.
Q: Is this harness a direct plug-and-play replacement?
A: Yes, the COGENG 20Y-06-42731 harness is manufactured to exact OEM specifications for connector types, pin assignments, wire gauge, and routing length. It is a heavy-duty, direct plug-and-play replacement requiring no wire splicing, soldering, or modifications when installed on compatible PC270-8 or PC270LC excavators.
Contact COGENG
📞 Phone: +86-185-2913-1515 🌐 Instagram
📧 Email: hugo@cogeng.net 🌐 Facebook：Excavator Parts Selection and Replacement Community
💬 WhatsApp +86-185-2913-1515 Facebook: Excavator Wiring Harness
💬 WeChat: +86-185-7865-1106 Facebook: Excavator Wire Harness
🌐 Website: cogeng.net Facebook: Excavator SolenoidValve
#ExcavatorWiringHarness #ExcavatorThrottleMotor #ExcavatorSolenoidValve #ExcavatorSealKit
