Drive Belt: Service and Repair

REMOVAL

POWER STEERING PUMP AND AIR CONDITIONING COMPRESSOR BELT





1. Using a 17 mm wrench, rotate belt tensioner clockwise (Fig. 2) until belt can be removed from power steering pump pulley. Gently, release spring tension on tensioner.





2. Remove the drive belt (Fig. 3).

GENERATOR BELT
1. Remove power steering pump/air conditioning compressor drive belt.





2. Loosen generator locking nut (Fig. 4).
3. Raise vehicle on hoist.





4. Remove accessory drive belt splash shield (Fig. 5).
5. Loosen generator pivot bolt (Fig. 4).
6. Loosen generator adjusting bolt until generator belt can be removed (Fig. 4).
7. Remove generator belt.

CLEANING
Clean all foreign debris from belt pulley grooves. The belt pulleys must be free of oil, grease, and coolants before installing the drive belt.

INSPECTION
New developments in belt technology allow the belt to greatly increase its life expectancy. Unless the belt exhibits one of the following conditions do not replace the belt.
^ Excessive wear
^ Frayed cords
^ Severe glazing





Pully-V Belt system may develop minor cracks across the ribbed side (due to reverse bending). These minor cracks are considered normal and acceptable. Parallel cracks are not (Fig. 6).

NOTE: Do not use any type of belt dressing or restorer on Poly-V Belts.

INSTALLATION

NOTE: When installing drive belt on the pulleys, make sure that belt is properly routed and all V-grooves make proper contact with pulley grooves.

POWER STEERING PUMP AND AIR CONDITIONING COMPRESSOR BELT
1. Install the drive belt (Fig. 3) over all the pulleys except for the power steering pump pulley.
2. Using a 17 mm wrench, rotate belt tensioner clockwise (Fig. 2) until belt can be installed on the power steering pulley. Release spring tension onto belt.





3. After belt is installed, inspect belt length indicator marks (Fig. 7). The indicator mark should be within the minimum belt length and maximum belt length marks. On a new belt, the indicator mark should align approximately with the nominal belt length mark.

GENERATOR BELT
1. Install belt around pulleys (Fig. 3).
2. Adjust belt tension by tightening adjusting bolt (Fig. 4). Adjust belt to specification shown in DRIVE BELT TENSION CHART.
3. Check belt tension using Special Tool 8371 -Belt Tension Gauge Adapter, and the DRBIII using the following procedures:

WARNING: DO NOT CHECK BELT TENSION WITH ENGINE RUNNING.

a) Connect 8371 to the DRBIII following the instructions provided with tool.





b) Place end of microphone probe approximately 2.54 cm (1 inch) from belt at one of the belt center span locations shown in (Fig. 8).
c) Pluck the belt a minimum of 3 times. (Use your finger or other suitable tool)
d) The frequency of the belt in hertz (Hz) will display on DRBIII screen.
e) Adjust belt to obtain proper frequency (tension).
4. Tighten generator pivot bolt to 54 Nm (40 ft. lbs.) (Fig. 4).
5. Install accessory drive belt splash shield (Fig. 5).
6. Lower vehicle.
7. Tighten generator locking nut to 54 Nm (40 ft. lbs.) (Fig. 4).
8. Install power steering pump/air conditioning compressor drive belt.





DRIVE BELT TENSION CHART

ADJUSTMENTS
For belt tension adjustment procedure, (Refer to -COOLING/ACCESSORY DRIVE/DRIVE BELTS -INSTALLATION)