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Drive Belt: Adjustments

ADJUSTMENT-ACCESSORY DRIVE BELT
Correct drive belt tension is required to ensure optimum performance of the belt driven engine accessories. There are different types of adjustment gauges for checking either a serpentine or a Vtype belt. Refer to the instructions supplied with the gauge. Use the correct gauge when checking belt tension. Place gauge in the middle of the section of belt being tested (between two pulleys) to check tension.
Do not allow the gauge (or gauge adapter) to contact anything but the belt.
With the engine off (not running), visually inspect accessory drive belt for glazing, cracks or chunks missing. Also inspect pulleys for misalignment or defects. (Refer to TESTING AND INSPECTION) correct belt diagnostic procedures.





ACCESSORY DRIVE BELT TENSION CHART
1. Disconnect battery negative cable.
2. Install belt tension gauge C4162 and compare reading with those in the Accessory Drive Belt Tension Chart .
If tension is within specifications and no adjustment is needed, remove belt tension gauge C4162 and connect battery negative cable.
If belt tension is out of specification and adjustment is necessary, continue with the following procedure.





3. Loosen idler pulley bolt (Fig. 10).
4. Adjust tension adjusting bolt (Fig. 10) until reading is within specification.
5. Tighten idler pulley bolt and recheck belt tension. Adjust if necessary.
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