John Deere — Replacing Fan and Alternator Belts
Maintenance · Belt drive
From a John Deere operator's manual — check it applies to your exact model before use.
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Procedure
- Inspect belts for cracks, fraying, or stretched areas.
- Release tension using breaker bar on tension arm.
- Remove poly-vee belt from pulleys.
- Inspect pulleys and bearings for hard turning or noise.
- Install new belt correctly seated in all pulley grooves.
- Apply tension with tensioner; remove socket.
- Install fan guard if removed.
- Start engine and check belt alignment.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Source: John Deere operator's 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.