Scheduled Visual Inspections: Conduct thorough inspections at intervals recommended by Caterpillar (e.g., every 250/500 service hours).
Abrasion Points: Check areas where the harness passes through bulkheads, near the swing bearing, or against structural components.
Connector Integrity: Ensure all connectors are fully engaged, locked, and their seals are intact. Look for signs of corrosion or moisture ingress.
Conduit Damage: Look for cracked, melted, or missing conduit.
Connection Security: Periodically check and clean main ground studs and power connections. Loose grounds are a leading cause of erratic electrical faults.
Proper Cleaning: During machine washing, avoid directing high-pressure water directly at electrical connectors, even if they are sealed.
This 377-8197 platform harness is used for 390FL excavator.
Related part number:
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