Belt Adjustment
Inspect belt for fraying. If fraying has occurred, ensure belt and tensioner are aligned properly. See Fig 1. If tensioner has reached its limit of travel, belt is excessively stretched and replacement of belt is required. If excessive noise is noticed from tensioner or idler, check for possible bearing failure. With the engine running, visually observe the grooves in the pulleys (not the pulley flanges or the pulley forward faces) for excessive wobble. Install new components as necessary. Check all accessories, mounting brackets, and the drive belt tensioner for any interference that would prevent the components from mounting correctly. Correct any interference condition and recheck the drive belt tracking. Tighten all accessories, mounting brackets, and the drive belt tensioner retaining hardware to specification. Recheck the drive belt tracking.
Belt tension is controlled by an automatic belt tensioner and is not adjustable. DO NOT apply belt dressing or any other additive to belt(s). Ensure belts are properly installed. The automatic drive belt tensioner can be checked as follows:
- With the engine running, observe the drive belt tensioner movement. The drive belt tensioner should move (respond) when the A/C clutch cycles or when the engine is accelerated rapidly. If the drive belt tensioner movement is constant without A/C clutch cycling or acceleration, a pulley or shaft is probably bent or a pulley is out of round.