| Category | Specification |
|---|---|
| COGENG Part Number | CG-CAT-3068610 |
| OEM Reference | 306-8610 |
| Construction Standard | Caterpillar OEM Specification |
| Wire Type | Oil-Resistant Cross-Linked Polyethylene |
| Connector Rating | IP66 (Dust Tight & Water Resistant) |
| Temperature Range | -40°C to 125°C |
| Voltage Rating | 24V DC System |
| Quality Validation | 100% Circuit Continuity Tested |
| Warranty Coverage | 18-Month Limited Warranty |
| NO | Number | Name | Qty |
| Grp | 267-8000 | BATTERY & WIRING GP | |
| 1 | 2G-8767 | WASHER | 2 |
| 2 | 53S-2093 | STRAP-CABLE | 38 |
| 3 | 3T-5760 | BATTERY GP | 2 |
| 4 | 570-6509 | GROMMET | 1 |
| 5 | 306-8401 | COVER-BATTERY | 1 |
| 6 | 5I-8270 | SPACER | 1 |
| 7 | 5I-9368 | SPACER | 1 |
| 8 | 6W-6005 | HOLD-DOWN-BATTERY | 1 |
| 9 | 7I-2673 | STRAP-CABLE | 4 |
| 10 | 7K-1181 | STRAP-CABLE | 15 |
| 11 | 7Y-5456 | GROMMET | 2 |
| 12 | 111-4836 | CLIP | 11 |
| 13 | 111-4837 | CLIP | 12 |
| 14 | 111-4838 | CLIP | 13 |
| 15 | 111-4839 | STRAP | 13 |
| 16 | 116-0118 | CLIP | 11 |
| 17 | 132-1805 | STRAP AS-GROUND | 1 |
| 18 | 132-1806 | STRAP AS-GROUND | 1 |
| 19 | 170-6929 | CABLE AS | 1 |
| 20 | 170-9336 | BRACKET AS | 1 |
| 21 | 183-1049 | BRACKET | 1 |
| 22 | 231-1827 | CABLE AS | 1 |
| 23 | 238-2501 | KNOB | 1 |
| 24 | 238-2528 | ROD | 1 |
| 25 | 251-0467 | BRACKET AS | 1 |
| 26 | 259-5267 | BRACKET AS | 1 |
| 27 | 259-5317 | BRACKET AS | 1 |
| 28 | 306-8610 | HARNESS AS-CHASSIS | 1 |
| 29 | 291-7591 | CABLE AS | 1 |
| 30 | 291-7593 | BRACKET AS | 1 |
| 31 | 085-7329 | SPACER | 2 |
| 32 | 091-9035 | SPACER | 6 |
| 33 | 9X-8256 | WASHER | 2 |
| 34 | 132-5789 | CLIP | 1 |
| 35 | 4K-8864 | CLIP | 1 |
| 36 | 4P-7428 | CLIP | 1 |
| 37 | 4P-7581 | CLIP | 4 |
| 38 | 5C-7261 | NUT | 1 |
| 39 | 5C-7883 | BOLT-SOCKET HEAD | 4 |
| 40 | 5I-3878 | GROMMET | 5 |
| 41 | 5P-4116 | WASHER-HARD | 2 |
| 42 | 6G-2256 | CLAMP | 4 |
| 43 | 6G-2263 | SPACER | 4 |
| 44 | 6K-8178 | CLIP | 2 |
| 45 | 7X-0818 | BOLT | 1 |
| 46 | 7X-2533 | BOLT | 1 |
| 47 | 7X-2619 | BOLT | 2 |
| 48 | 7X-2621 | SPACER | 2 |
| 49 | 7Y-1924 | NUT | 1 |
| 50 | 7Y-5226 | GROMMET | 1 |
| 51 | 7Y-8165 | GROMMET | 1 |
| 52 | 7Y-8167 | CLIP | 1 |
| 53 | 8J-1256 | CLIP | 1 |
| 54 | 8M-2770 | BOLT | 1 |
| 55 | 8T-0286 | WASHER-HARD | 1 |
| 56 | 8T-0328 | WASHER-HARD | 2 |
| 57 | 8T-4121 | NUT | 60 |
| 58 | 8T-4133 | NUT | 1 |
| 59 | 8T-4136 | BOLT | 10 |
| 60 | 8T-4137 | BOLT | 36 |
| 61 | 8T-4182 | BOLT | 2 |
| 62 | 8T-4185 | BOLT | 2 |
| 63 | 8T-4191 | BOLT | 3 |
| 64 | 8T-4195 | BOLT | 5 |
| 65 | 8T-4196 | BOLT | 1 |
| 66 | 8T-4199 | BOLT | 1 |
| 67 | 8T-4226 | BOLT | 1 |
| 68 | 8T-6466 | BOLT | 1 |
| 69 | 8T-6912 | BOLT | 2 |
| 70 | 299-2767 | WIRE AS | 1 |
COGENG proudly offers the precision-engineered Engine Wiring Harness, Part Number 306-8610, a vital electronic component designed for the robust operation of popular Caterpillar medium-sized excavators. This harness is the essential replacement part for models such as the CAT 320D, 320D L, 323D, and 323D L, which are powered by the highly efficient CAT C6.4 Diesel Engine.
The 306-8610 harness serves as the complex bridge connecting the Engine Control Module (ECM) to a multitude of sensors, fuel injectors, and actuators mounted on the C6.4 engine. In modern, electronically-controlled engines like the C6.4, the integrity of this harness is paramount for operational efficiency and diagnostic health.
Its primary function is to:
Ensure Precise Fuel Delivery: It carries the critical signals from the ECM to the fuel injectors, governing the exact timing and amount of fuel injected into each cylinder. Any fault in this electrical path can lead to misfires, reduced power, excessive smoke, and high fuel consumption.
Transmit Diagnostic Data: The harness routes real-time data from temperature, pressure, and speed sensors back to the ECM. This data is crucial for the machine's onboard diagnostic systems to monitor engine health and prevent catastrophic failures. A reliable harness ensures that error codes are accurate, simplifying maintenance and troubleshooting.
Maintain Engine Protection: It provides the electrical pathways for crucial safety features, including engine speed control and automatic shutdown signals, protecting the C6.4 from damage due to overheating or low oil pressure.
