Perkins 1103 / 1104 — Cylinder Head - Inspect
Maintenance
For the Perkins 1103 / 1104, from the Perkins service manual.
Applies to: Perkins 1103, Perkins 1104, Perkins 1104 (1103 also covered) engine
Procedure
- Remove the cylinder head and the water temperature regulator housing.
- Inspect the cylinder head for signs of gas or coolant leakage.
- Remove the valve springs and valves.
- Clean the bottom face, coolant passages and lubricating oil passages; ensure contact surfaces are clean, smooth and flat.
- Inspect the bottom face for pitting, corrosion and cracks, especially around valve seat inserts and fuel injector holes.
- Test the cylinder head for leaks at a pressure of 200 kPa (29 psi).
- Measure cylinder head flatness side to side, end to end, and diagonally with a straight edge and feeler gauge.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Cylinder head leak test pressure 200 kPa (29 psi).
- Minimum cylinder head thickness after machining 117.20 mm (4.614 inch).
Full service-parts list: Perkins 1103 →, Perkins 1104 →
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.