Perkins — Cylinder Head - 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
- Do not use a lever to separate cylinder head.
- Keep all parts clean from contaminants.
Procedure
- Drain coolant.
- Remove exhaust manifold, fuel filter base, injectors, glow plugs, rocker shaft, and water pump.
- Loosen cylinder head bolts in reverse numerical order.
- Remove bolts and lift cylinder head off block.
- Remove gasket.
- Clean gasket surfaces.
- Install guide bolts and new gasket.
- Install cylinder head.
- Install bolts and tighten to specified torque in sequence.
- For Type Two bolts, turn additional 150 degrees.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Cylinder head bolts: 37 N·m, 51 N·m, 101 N·m, or 50 N·m plus 150 degrees depending on model
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.