All belts must be checked:
- water pump
- alternator
- air compressor
- power steering
Belt condition must be:
- should be snug
- up to 3/4” of play at center of belt
- no cracks
- no frays
If any of the above systems don’t use a belt (gear driven), you must:
- tell the examiner that the system is not belt driven
- check that the equipment is working properly (mounted correctly, not leaking, no missing bolts, etc.)
In most modern trucks, the air compressor and/or power steering pump are gear driven.
Each of these belts operates a major system within the vehicle; damage to one of the belts could cause an accident or system failure, resulting in injury or endangerment of other drivers.