| Parameter | 201-06-73551 | 201-06-73552 |
|---|---|---|
| COGENG Part Number | 201-06-73551 | 201-06-73552 |
| OEM Equivalent | Komatsu 201-06-73551 | Komatsu 201-06-73552 |
| Product Type | Main Wiring Harness (Section A) | Main Wiring Harness (Section B) |
| Application | Complete machine electrical system | Complete machine electrical system |
| Harness Type | Main machine harness (engine + cab) | Main machine harness (chassis + hydraulics) |
| Compatible Models | Multiple Komatsu excavator and heavy equipment models | Multiple Komatsu excavator and heavy equipment models |
| Brand | 201-06-73551 | 201-06-73552 |
|---|---|---|
| COGENG | 201-06-73551 | 201-06-73552 |
| Komatsu | 201-06-73551 | 201-06-73552 |
| Interchange | 201-06-73553, 201-06-73554 | 201-06-73555, 201-06-73556 |
| Step | Action | Critical Checks | Tool |
|---|---|---|---|
| 1 | Disconnect batteries | Negative terminal first | 10mm socket |
| 2 | Release hydraulic pressure | Cycle controls 5x after shutdown | - |
| 3 | Tag connectors (photo) | Use color-coded tags | Digital camera |
| 4 | Clean ECU ports | CRC Electronic Cleaner + brush | Contact cleaner |
| 5 | Route harness | 50mm clearance from exhaust | Cable ties |
| 6 | Torque connectors | Sumitomo: 8-10 N·m; Deutsch: 5-7 N·m | Torque wrench |
| 7 | Dielectric grease application | Apply to all seals | Dow Corning DC4 |
Parts list⚠️ Warning: Skipping step 2 causes hydraulic oil injection risk!
| NO | Number | Name | Qty |
| 1 | 201-06-73131 | WIRING HARNESS | 1 |
| 201-06-73132 | WIRING HARNESS | 1 | |
| 201-06-73133 | WIRING HARNESS | 1 | |
| 201-06-73134 | WIRING HARNESS,(FOR U.S.A.) | 1 | |
| 201-06-73551 | WIRING HARNESS,(NORWAY SPEC.) | 1 | |
| 201-06-73552 | WIRING HARNESS,(NORWAY SPEC.) | 1 | |
| 201-06-73231 | WIRING HARNESS,(FOR U.S.A.) | 1 | |
| 2 | 08036-02514 | CLIP | 6 |
| 3 | 01010-81025 | BOLT | 5 |
| 4 | 01010-81040 | BOLT | 1 |
| 5 | 201-03-29160 | SPACER | 1 |
| 6 | 01643-31032 | WASHER | 6 |
| 7 | 04434-53211 | CLIP | 1 |
| 8 | 07095-20523 | CUSHION | 1 |
| 9 | 01010-81025 | BOLT | 1 |
| 10 | 01643-31032 | WASHER | 1 |
| 11 | 08036-01414 | CLIP | 1 |
| 12 | 01010-81020 | BOLT | 1 |
| 13 | 01643-31032 | WASHER | 1 |
| 14 | 08036-01014 | CLIP | 1 |
| 15 | 08036-02514 | CLIP | 1 |
| 16 | 01010-81016 | BOLT | 1 |
| 17 | 01643-31032 | WASHER | 1 |
| 18 | 201-06-71322 | BRACKET | 1 |
| 19 | 01010-81025 | BOLT | 2 |
| 20 | 01643-31032 | WASHER | 2 |
| 21 | 04434-51010 | CLIP | 1 |
| 22 | 04434-51810 | CLIP | 1 |
| 23 | 01010-81016 | BOLT | 2 |
| 24 | 01643-31032 | WASHER | 2 |
| 25 | 201-06-71380 | BRACKET | 1 |
| 26 | 201-06-73640 | BRACKET | 1 |
| 27 | 01010-81020 | BOLT | 2 |
| 28 | 01643-31032 | WASHER | 2 |
| 29 | 04434-53211 | CLIP | 1 |
| 30 | 07095-20523 | CUSHION | 1 |
| 31 | 01010-81025 | BOLT | 1 |
| 32 | 01643-31032 | WASHER | 1 |
| 33 | 01010-81025 | BOLT | 1 |
| 34 | 01643-31032 | WASHER | 1 |
| 35 | 08051-00801 | CLIP | 3 |
🌐 Compatibility Quick Reference| Machine | 73551 | 73131 | 73132 | 73133 | 73134 |
|---|---|---|---|---|---|
| PC300-8 | ✓ | ✗ | ✓ | ✗ | ✗ |
| PC360-8 | ✗ | ✓ | ✗ | ✗ | ✗ |
| PC400-8 | ✓ | ✓ | ✓ | ✗ | ✓ |
| PC450-8 | ✓ | ✓ | ✗ | ✓ | ✓ |
| PC490LC-8 | ✗ | ✗ | ✗ | ✓ | ✗ |
Q: What Komatsu models use the 201-06-73551 and 201-06-73552 wiring harness set?
A: The COGENG complete wiring harness set, covering part numbers 201-06-73551 and 201-06-73552, is designed for select Komatsu excavator and heavy equipment models where these harness part numbers are specified. These typically represent main harness and engine harness configurations working together as a complete 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 controls, erratic gauge or sensor readings, CAN bus communication errors, specific hydraulic or engine functions not responding, unexpected machine shutdowns, or recurring diagnostic trouble codes that cannot be resolved through component replacement. Harness degradation is often caused by prolonged heat exposure, vibration, moisture ingress, and connector terminal corrosion.
Q: What is the difference between the 201-06-73551 and 201-06-73552 harnesses?
A: In a complete harness set, the two part numbers typically represent different harness sections. Commonly, one serves as the main chassis/cab harness while the other functions as the engine harness. Each harness handles distinct circuits and connectors, and both work together to form the machine's complete electrical system. Both are included in this COGENG set for a comprehensive electrical system overhaul.
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
