Initial Inspection and Diagnostic Overview
Inspection and Verification1. Verify customer concern by running the engine.
2. Inspect the drive belt for chunking. braying, wear, and pilling.
3. Check the drive belt for correct routing.
Drive Belt Cracking/Chunking/Wear
V-Ribbed Serpentine Drive Belt With Cracks Across Ribs
The accessory drive:
- has a single serpentine drive belt.
- has an automatic drive belt tensioner.
- does not require adjustment.
- does not require lubrication or belt dressing.
V-Ribbed Belt With Chunks of Rib Missing
V-Ribbed Belt With Pilling
NOTE: Pilling is an excessive buildup in the V-grooves of the belt.