Perkins — Rocker Shaft - Disassemble (403D-15, 403D-15T, 404D-22, 404D-22T and 404D-22TA Engines)
Repair & overhaul
From a Perkins service manual covering: 402D-05, 403D-07, 403D-11, 403D-15, 404D-22, 404D-22T, 404D-22TA. 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
- Personal injury can result from being struck by parts propelled by a released spring force.
- Used components must be reinstalled in the original location. Do not interchange components.
Procedure
- Make a temporary identification mark on each rocker arm assembly to show the location.
- Install a suitable bolt into the end of the rocker shaft and pull the rocker shaft (6) from base (8).
- Remove rocker arms (3), washers (5), and springs (4).
- Remove O-ring seal (7) from rocker shaft (6).
- Remove adjustment screws (1) and nuts (2) from rocker arms (3).
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 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.