Power Solutions International — Cylinder Heads Assembly Procedure
Repair & overhaul
From a Power Solutions International service manual — check it applies to your exact model before use.
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Before you start
- The engine MUST be barred over three complete rotations before starting once new cylinder heads are installed.
- Cylinder head gasket and valve stem gland can only be used once.
Procedure
- Assemble cylinder head bolt; bolts allowed 3 uses, then replace.
- Coat short thread end with anaerobic thread locking agent 262.
- Clean the threaded hole on the cylinder body.
- Tighten the bolts to (20+10) N·m.
- Assemble cylinder head gasket (use once, replace on repair).
- Wipe cylinder liner wall, coat with clean oil, place gasket on pin holes.
- Assemble valve stem gland (use once); lubricate lip.
- Clean cylinder head and assemble with pin-surface positioning.
- Assemble clamping block and install cylinder head bolts.
- Tighten main bolts to 60±6 N·m; tighten auxiliary nuts to 25±3 N·m.
- Turn nuts and main bolts 120°±5° in sequence, twice each.
- Bar engine over three complete rotations before starting.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Cylinder head main bolts 60±6 N·m
- Cylinder head auxiliary nuts 25±3 N·m
Source: Power Solutions International 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.