Katolight — Replacing Fan/Alternator V-Belts
Maintenance · Fan and alternator belt drive
From a Katolight manual covering: 10.5 L, 12.5, D415FGJ4, D415FJJ4, D415FNJ4, D415FPJ4, D415FRJ4, D41S5FRJ4, KDGC-2001, KDGC-500, PowerTECH 10.5/12.5 L, UN-1GNOVOS. Check it applies to your exact model before use.
Applies to: Katolight D415FGJ4, Katolight D415FJJ4, Katolight D415FNJ4, Katolight D415FPJ4, Katolight D415FRJ4, Katolight D41S5FRJ4, John Deere 6125 HF 070 engine, John Deere 6125HF070 engine, Katolight 6125HF070 engine
Procedure
- Release tension on lower belt with breaker bar in tensioner.
- Remove V-belt from pulleys and discard.
- Install new belt correctly seated in all pulley grooves.
- Release tensioner to apply tension; remove ratchet.
- Lower V-belt must be removed before upper V-belt.
- Check belt alignment; start engine and visually recheck.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
Full service-parts list: Katolight D415FGJ4 →, Katolight D415FJJ4 →, Katolight D415FNJ4 →, Katolight D415FPJ4 →, Katolight D415FRJ4 →, Katolight D41S5FRJ4 →, John Deere 6125 HF 070 engine →, John Deere 6125HF070 engine →
Source: Katolight 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.