Ford CSG-649 — Drive Belt Tension Check and Adjustment
Adjustments · Alternator/fan drive belt
For the Ford CSG-649, from the Ford service manual.
Applies to: Ford CSG-649
Parts for this job
- T63L-8620-A Belt Amazon eBay $49.99
Part numbers from the service-parts list for Ford CSG-649. Verify against your serial number before ordering; some links are affiliate links.
Procedure
- Install the belt tension tool on the drive belt and check the tension.
- If adjustment is necessary, loosen the alternator mounting bolts and the alternator adjusting arm bolts.
- Move the alternator toward or away from the engine until the correct tension is obtained.
- Remove the gauge.
- Tighten the alternator adjusting arm bolt and mounting bolts.
- Install the tension gauge and recheck belt tension.
Tools required
- Belt tension gauge T63L-8620-A, Model 210019 or equivalent Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Belt tension — New 140; Used 110
- A used belt is one that has been in operation for 10 minutes or more
Full service-parts list: Ford CSG-649 →
Source: Ford service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.