F 250 2WD Pickup V8-7.3L DSL (1990)
Drive Belt: Customer Interest
Accessory Drive Belt - Noise/Excessive Wear
Article No.
94-1-10
01/12/94
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BELT - FRONT END ACCESSORY DRIVE (FEAD) - EXCESSIVE IDLER/TENSIONER PULLEY WEAR
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BELT - FRONT END ACCESSORY DRIVE (FEAD) - NEW BELT FOR ABRASIVE ENVIRONMENT
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NOISE - "THUMP" FROM FRONT END ACCESSORY DRIVE (FEAD) BELT - BELT EDGE STARTS TO FRAY
LIGHT TRUCK:
1987-93 BRONCO, ECONOLINE, F-150-350 SERIES
ISSUE:
Front End Accessory Drive (FEAD) belts have a cloth backing which can trap abrasive particles, resulting in belt wear and erosion of the idler pulleys.
ACTION:
Replace the current FEAD belt with a new neoprene-backed belt which does not retain abrasive particles or promote pulley wear. Refer to the following
procedure for service details.
1.
Inspect the tensioner and idler pulleys for wear of the drive surfaces.
NOTE:
NOMINAL PULLEY DIAMETER IS 90 mm (3.453") OR 76 mm (2.916"); PULLEYS WORN TO 88 mm (3.377") OR 74 mm (2.839") SHOULD
BE REPLACED.
2.
Select the appropriate neoprene-backed belt and install per standard belt routing (refer to Service Manual Section 03-05).
3.
Insure that all belt vee's are in all pulley grooves.
