Perkins — Alternator and Fan Belts - Replace
Maintenance · Alternator/Fan Belts
From a Perkins owner's manual covering: 402D-05, 403D-07, 403D-11, 403D-15, 404D-22, 404D-22T, 404D-22TA, SEBU8311-10. Check it applies to your exact model before use.
Applies to: Perkins 402D-05, Perkins 403D-07, Perkins 403D-11, Perkins 403D-15, Perkins 404D-22, Perkins 404D-22T, Perkins 404D-22TA
Before you start
- For multiple drive belts, replace the belts in matched sets.
Procedure
- Remove the fan guards if equipped.
- Loosen bolt (1), bolt (2), and bolt (4).
- Push the alternator toward the engine and remove the V-belt from the pulleys.
- Position the new V-belt on the pulleys following the correct belt routing.
- Slide the alternator away from the engine and set the correct belt tension.
- Tighten bolt (1), bolt (2), and bolt (4) to a torque of 25 N·m (18 lb ft).
- Check the belt tension again after 20 hours of engine operation.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Mounting/adjusting bolt torque: 25 N·m (18 lb ft)
- New belt tension: 400 N to 489 N (90 to 110 lb)
- Used belt tension: 267 N to 356 N (60 to 80 lb)
Full service-parts list: Perkins 402D-05 →, Perkins 403D-07 →, Perkins 403D-11 →, Perkins 403D-15 →, Perkins 404D-22 →, Perkins 404D-22T →, Perkins 404D-22TA →
Source: Perkins owner'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.