| Specification Category | Details |
|---|---|
| Compatible Machine Model | Doosan DX235LC-5 Excavator |
| COGENG Part Number | CG-DX235-EWH06 |
| Replaces OEM Part Numbers | 310207-03915, 310207-03915A, 310207-03915C |
| Product Name | Engine Wiring Harness Assembly |
| Application | Engine control system, sensor links, and monitoring circuits |
| Wire Specifications | High-temperature XLPO insulation, oil and abrasion resistant |
| Connector Type | OEM-style sealed connectors (IP67 rated) |
| Quality Assurance | 100% continuity, insulation resistance, and short-circuit tested |
| Warranty | 2,000-hour limited warranty |
| NO | Number | Name | Qty |
| 1 | 310208-00430 | WIRE,ELECTRIC | 1 |
| 2 | 310101-00172 | TIE,CABLE | 5 |
| 3 | 06.01913-2911 | BOLT ASS'Y M6X16 | 2 |
| 4 | 310207-03915 | HARNESS ASSY,ENGINE | 1 |
| 310207-03915A | HARNESS ASS'Y,ENGINE | 1 | |
| 310207-03915C | HARNESS ASSY,ENGINE | 1 | |
| 5 | 110452-00085 | BRACKET;WIRE HARNESS | 2 |
| 6 | 110452-00104 | BRACKET,WIRE HARNESS | 1 |
| 7 | 110452-00144A | BRACKET,WIRE HARNESS | 1 |
| 8 | 110452-00145 | BRACKET,WIRE HARNESS | 1 |
| 9 | 06.01923-3112 | BOLT ASS'Y M8X18 | 2 |
| 10 | 06.01923-3114 | BOLT ASS'Y M8X22 | 10 |
| 11 | 06.01923-3117 | BOLT ASS'Y M8X30 | 1 |
| 12 | 06.01923-3214 | BOLT;HEX. M10X22 | 5 |
| 14 | 06.16731-2107 | WASHER | 2 |
| 15 | 06.16731-2108 | WASHER;SPRING | 1 |
| 18 | 120122-00023 | BOLT;SPACER | 1 |
| 19 | 120122-00024 | BOLT;SPACER | 1 |
| 20 | 120117-00033 | BOLT,STUD | 1 |
| 20 | 120122-00023 | BOLT;SPACER | 1 |
| 22 | 65.90535-0003 | NUT | 3 |
| 24 | 65.97401-0186 | CLIP,PIPE | 1 |
| 25 | 310207-03341A | HARNESS;AIR HEATER | 1 |
| 310207-03341B | HARNESS | 1 | |
| 26 | 310207-03342A | HARNESS;AIR HEATER | 1 |
| 310207-03342B | HARNESS | 1 | |
| 27 | 310207-03926 | HARNESS | 1 |
| 310207-03926A | HARNESS | 1 | |
| 30-1 | 110411-00253 | BRACKET,RELAY | 1 |
| 30-2 | 301202-00067 | RELAY,PRE HEATER | 1 |
| 30-3 | 110406-02674 | BRACKET | 1 |
| 30-4 | 06.01923-3112 | BOLT ASS'Y M8X18 | 2 |
| 30-5 | 310207-01067A | HARNESS ASS'Y | 1 |
| 30-6 | 06.04190-0604 | SCREW | 2 |
| 30-7 | 06.16731-2103 | WASHER,SPRING | 2 |
| 30-8 | 06.11063-8214 | NUT | 2 |
| 30-9 | 06.16731-2107 | WASHER | 2 |
| 30-10 | 06.15010-2311 | WASHER | 2 |
Disconnect All Power Sources: Turn off the excavator and disconnect the negative battery terminals. Allow 10 minutes for system capacitors to discharge.
Record Existing Layout: Take clear photos of the original harness routing, connector positions, and cable tie locations before removal.
Handle Connectors with Care: Use appropriate tools to release locks—do not pull wires. Check for and avoid bending pins during disconnection.
Inspect Related Components: Examine sensors, solenoids, and controller ports for damage or corrosion. Replace as needed before installing the new harness.
Follow Factory Routing: Install the harness along the original path. Use all designated clips and clamps to avoid contact with hot or moving parts.
Ensure Full Engagement: Push each connector until it clicks into place. Tug gently to confirm it’s secure.
Post-Installation Check: Reconnect batteries and power on the system. Check the dashboard for error codes and verify all engine and control functions operate normally.
Q: What are the symptoms of a failing engine harness on a Doosan DX235LC-5 with DL06 Tier 4 engine?
A: Common symptoms include intermittent engine performance issues, engine stalling or failure to start, multiple diagnostic trouble codes related to the emissions or fuel system, erratic sensor readings on the monitor panel, unresponsive throttle control, CAN bus communication errors between the engine ECU and machine controller, or the engine entering a derate or limp mode. Tier 4 engines feature complex emissions control systems that rely heavily on precise sensor signals, making harness integrity critical for proper engine and aftertreatment operation.
Q: Is this harness a direct plug-and-play replacement?
A: Yes, the COGENG 310207-03915 engine harness is manufactured to exact OEM specifications for connector types, pin assignments, wire gauge, and routing length. It is a direct plug-and-play replacement requiring no wire splicing, soldering, or modifications when installed on compatible Doosan DX235LC-5 excavators with DL06 Tier 4 engines.
Q: What makes this a "high-spec" engine wiring harness?
A: The COGENG 310207-03915 harness is built using premium-grade materials specifically selected for the demanding operating conditions of Tier 4 engine compartments. Key features include high-temperature resistant insulation rated for elevated engine bay temperatures, superior oil and chemical resistant protective loom covering, corrosion-resistant connector terminals with high-precision pin alignment, and reinforced stress points at all connector junctions for enhanced durability and extended service life.
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