F 350 4WD Pickup V8-7.3L DSL (1988)
Drive Belt: Customer Interest
Accessory Drive Belt - Broken/Damaged
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ACCESSORY DRIVE BELTS-7.3L-BREAK-IMPROPER TENSION-AMBULANCES WITH LEECE NEVILLE ALTERNATOR
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ACCESSORY DRIVE BELTS-7.3L-WITH LEECE NEVILLE ALTERNATOR AND VACUUM PUMPTIGHTENING
PROCEDURE-AMBULANCES
Article No. 90-11-12
LIGHT TRUCK:
1988-90 E-260, E-350, F SUPER DUTY, F-250, F-350
ISSUE:
Accessory drive belts that break or become damaged may be caused by mis-adjusted belts. Too much tension can stretch the belt and cause it
to break. Not enough tension can cause the belt to slip in the pulleys which will generate excessive heat and damage the belt.
ACTION:
Use the following procedure to set the 7.3L diesel engine accessory drive belts to the proper tension.
1.
Check the condition of the accessory drive belts. Replace the belts as required. If a seasoned belt has tension in excess of 180 lbs., replacement is
recommended. Refer to the 1990 Econoline or F-Series Shop Manual, Section 27-06 for service details.
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When replacing the alternator belt, use belt (E8US-8620-BA). DO NOT USE A SUBSTITUTE PART.
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When replacing the vacuum pump belt, use belt (D22E-8620-CA). DO NOT USE A SUBSTITUTE PART.
Figure 1
2.
Remove the bolts at the pivot and adjusting locations of the vacuum pump mounting bracket, Figure 1.
Figure 2
