| Category | Specification |
|---|---|
| COGENG Set Number | CG-HYUNDAI-SET-21N811041-11042-11043 |
| OEM References | 21N8-11041, 21N8-11042, 21N8-11043 |
| Compatible Model | Hyundai R305LC-7 |
| Machine Class | 30-Ton Excavator |
| Set Components | 3 Complete Harness Assemblies |
| Wire Insulation | Oil-Resistant XLPE |
| Connector Rating | IP67 (Waterproof & Dustproof) |
| Temperature Range | -40°C to 125°C |
| Voltage Rating | 24V DC System |
| Quality Validation | 100% Individual & Integrated Testing |
| Warranty Coverage | 18-Month Limited Warranty |
| NO | Number | Name | Qty |
| 2 | 21N8-10013 | HARNESS-FRAME | 1 |
| 21N8-10014 | HARNESS-FRAME | 1 | |
| 2 | 21N8-11041 | HARNESS-FRAME | 1 |
| 21N8-11042 | HARNESS-FRAME | 1 | |
| 21N8-11043 | HARNESS-FRAME | 1 | |
| 26 | 21A8-12152 | HARNESS-FRAME | 1 |
| 21N8-12153 | HARNESS-FRAME | 1 | |
| 16 | 21EA-60521 | HORN-LOW | 1 |
| 16 | 21N5-10050 | HORN-LOW | 1 |
| 16 | 21N5-10051 | HORN-LOW | 1 |
| 17 | 21EA-60531 | HORN-HIGH | 1 |
| 17 | 21N5-10060 | HORN-HIGH | 1 |
| 17 | 21N5-10061 | HORN-HIGH | 1 |
| 24 | 21N6-20210 | WORK LAMP ASSY | 1 |
| 24 | 21N6-20211 | WORK LAMP ASSY | 1 |
| 27 | 25D1-10640 | CLIP ASSY | 2 |
| 28 | 25D1-10650 | CLIP ASSY | 1 |
| 31 | 21N₆-20521 | PLATE-HORN | 1 |
| 34 | S037-102022 | BOLT-W/WASHER | 27 |
| 35 | S035-082022 | BOLT-M/WASHER | 3 |
| 40 | S593-000902 | CLIP-HARNESS | 1 |
| 40 | S593-000902 | CLIP-HARNESS | 2 |
| 46 | S543-120002 | CLAMP-TUBE | 13 |
| 47 | S543-080002 | CLAMP-TUBE | 8 |
| 47 | S543-080002 | CLAMP-TUBE | 7 |
| 50 | E127-5007 | HOSE-OUTLET | 1 |
| 50 | 21N4-20540 | HOSE-0UTLET | 1 |
| 51 | S520-027000 | CLAMP-HOSE | 2 |
| 51 | S520-032000 | CLAMP-HOSE | 3 |
Complete machine power shutdown required before installation
Install all three harnesses as complete set for optimal performance
Follow R305LC-7 specific routing diagrams for each component
Ensure all inter-harness connections are properly engaged
Perform comprehensive system diagnostics after installation
Pre-Installation Protocol
Park excavator on solid, level ground with tracks properly blocked
Lower all attachments to ground and engage all safety locks
Document current machine configuration and system parameters
Disconnect main battery bank and wait 15 minutes for system capacitor discharge
Harness Identification & Documentation
21N8-11041: Primary main power distribution harness
21N8-11042: Secondary control systems harness
21N8-11043: Tertiary monitoring and auxiliary systems harness
Create detailed photographic documentation of entire existing harness routing
Label every connector with corresponding system and component identification
Systematic Removal Process
Remove harnesses in sequence, starting with 21N8-11043
Use proper connector release tools to prevent damage to mating connectors
Note specific routing sequences through structural members and protective conduits
Support harness weight during removal to prevent stress on components
Staged Installation Approach
Install 21N8-11041 first, following exact OEM routing path
Follow with 21N8-11042 installation, ensuring proper harness integration
Complete with 21N8-11043 installation, verifying all connections
Use all original mounting points, clips, and protective conduits
Connection Integrity Sequence
Start with main power feeds and critical ground connections
Progress through system clusters following factory service sequence
Verify all connector environmental seals are properly seated
Ensure positive lock engagement with distinct audible confirmation
Install all connector position assurance clips
Commissioning & Validation Protocol
Perform comprehensive continuity and insulation resistance testing
Verify CAN bus network integrity and communication with all controllers
Reconnect main battery bank and monitor for abnormal current draw
Power up systems sequentially following factory startup procedure
Conduct complete operational cycle test with system monitoring
Clear all diagnostic codes and verify system parameter calibration
