| Category | Specification |
|---|---|
| COGENG Part Number | CG-HIT-0001858 |
| Replaces OEM Number | 0001858 |
| Harness Type | Main Chassis Harness |
| Wire Standard | Oil-Resistant Grade |
| Connector Type | Original Equipment Specification |
| Quality Assurance | 100% Electrically Tested |
| Warranty | 24-Month Limited Warr |
The 0001858 wiring harness is a specific wiring harness used in Hitachi EX220-3 and EX200-3 excavator models. It serves as a vital component that facilitates electrical connections between various parts and components within the excavator.
If you need to replace the 0001858 wiring harness in your Hitachi EX220-3 or EX200-3 excavator, here are some general steps to follow:
Identify the correct wiring harness: Ensure that you have the accurate replacement wiring harness with the part number 0001858 for your specific Hitachi excavator model. It's crucial to obtain a genuine Hitachi wiring harness from an authorized Hitachi dealer or reputable supplier.
Prepare the excavator: Prior to replacing the wiring harness, make sure the excavator is turned off, and the electrical system is de-energized. Disconnect the battery and any other power sources to prevent electrical accidents during the replacement process.
Locate the existing wiring harness: The wiring harness is typically routed throughout the excavator's engine compartment, cabin, and other areas. Refer to the excavator's manual or consult with a qualified technician to identify the specific areas where the harness is installed.
Remove the old wiring harness: Carefully disconnect the electrical connectors and terminals attached to the old wiring harness. Depending on the complexity of the harness routing, you may need to remove certain panels or covers to gain access to the harness. Take note of the routing and connections to aid in the installation of the new harness.
Install the new wiring harness: Take the new 0001858 wiring harness and route it along the same path as the old harness, ensuring it is properly secured and away from any moving parts or heat sources. Connect the electrical connectors and terminals to their respective locations, ensuring a secure and proper connection.
Test the new wiring harness: Reconnect the excavator's battery and power sources. Perform a thorough inspection to ensure all connections are secure and properly routed. Test the functionality of the electrical system to verify that the new wiring harness is working correctly.
| NO | Number | Name | Qty |
| 00 | 0001858 | HARNESS | 1 |
| 01 | 4121859 | CLIP | 7 |
| 04 | 4190275 | CLIP | 1 |
| 05 | 4254600 | CLIP | 1 |
| 06 | J460616 | SCREW | 3 |
| 09 | ]450620 | SCREW | 2 |
10 |
4277927 |
HARNESS |
1 |
| 11 | 4277941 | HARNESS | 1 |
| 12 | 4284198 | HARNESS | 1 |
| 15 | J460616 | SCREW | 8 |
| 19 | 4251588 | RELAY | 7 |
| 20 | ]460616 | SCREW | 8 |
| 23 | 4038459 | HOURMETER | 1 |
| 24 | J460616 | SCREW | 2 |
| 27 | 4205750 | TIMER | 1 |
| 28 | J460616 | SCREW | 2 |
| 29 | 4281293 | HARNESS | 4 |
| 32 | 4055312 | CLIP | 6 |
| 33 | 4000859 | CLIP | 1 |
| 34 | ]901016 | BOLT | 4 |
| 35 | A590910 | WASHER | 4 |
| 36 | A590110 | WASHER | 4 |
| 101 | 9133702 | UNIT:EC | 1 |
| 102 | 9133703 | UNIT;PVC | 1 |
| 107 | 4249690 | FUSE(1A) | 6 |
| 108 | 4195593 | FUSE(5A) | 8 |
| 109 | 4195594 | FUSE(10A) | 3 |
| 110 | 4195596 | FUSE(20A) | 2 |
Q: What Hitachi models use the 0001858 main chassis wiring harness?
A: The 0001858 main chassis loom is commonly found on various Hitachi EX series excavators. Please verify the part number stamped on your original harness tag or consult your machine's parts manual to confirm exact fitment before ordering.
Q: What is included in the main chassis wiring harness?
A: The main chassis harness (also called a main frame loom) is the central nervous system of the excavator. It includes the main trunk line that runs through the machine's frame, with branching connections to the cab, engine ECU, hydraulic solenoids, sensors, and lighting circuits.
Q: How do I know if my main chassis harness needs replacement?
A: Common signs include multiple electrical issues occurring simultaneously, melted or brittle wiring insulation visible near hot engine areas, green corrosion spreading through wire strands, or intermittent faults that cannot be traced to a single component. On older machines, full harness replacement is often more cost-effective than chasing individual wire repairs.
