Perkins — Engine Oil Pump - Remove and Install
Repair & overhaul
From a Perkins service manual covering: 402D-05, 403D-07, 403D-11, 403D-15, 404D-22, 404D-22T, KENR6226-10. 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
Before you start
- If front housing is not installed, do not turn crankshaft.
- Keep all parts clean from contaminants.
Procedure
- Set engine to top center for No. 1 piston.
- Remove valve mechanism cover and front housing.
- Loosen rocker arm adjusters until valves closed.
- Remove C-clip, collar, spring, shims, and oil pump cover.
- Remove idler gear, inner rotor, and thrust washer.
- Remove bolts and idler hub using tools.
- Install idler hub using alignment tool.
- Install thrust washer, inner rotor, idler gear, oil pump cover, shim, spring, collar, and C-clip.
- Check end play with feeler gauge.
- Install front housing and set valve lash.
Tools required
- T418755 Hub Removal Tool Amazon
- 27610311 Slide Hammer Puller Gp Amazon
- 21825626 Alignment Tool Amazon
- 27610327 Alignment Tool Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Engine oil pump bolts: 10 N·m
- Oil strainer bolts: 11 N·m
Full service-parts list: Perkins 402D-05 →, Perkins 403D-07 →, Perkins 403D-11 →, Perkins 403D-15 →, Perkins 404D-22 →, Perkins 404D-22T →
Source: Perkins 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.