Perkins 1104 — Rocker Shaft and Pushrod - Install

Maintenance · Rocker shaft and pushrods

For the Perkins 1104, from the Perkins service manual.

Applies to: Perkins 1104, Perkins N H1 (Engine) engine

Procedure

1. Clean valve bridges; inspect for wear or damage; replace if needed.
2. Lubricate valve bridges with clean engine oil; install to cylinder head.
3. Clean pushrods; inspect for wear or damage; replace if needed.
4. Apply clean engine oil to both ends of pushrods; install with cup upward.
5. Ensure rocker shaft assembly clean and free from wear or damage.
6. Position rocker shaft assembly onto cylinder head; retaining clip should face front of engine.
7. Install torx screws to rocker shaft assembly.
8. Tighten torx screws progressively starting at center working to ends.
9. Tighten torx screws to 35 N·m (26 lb ft).
10. Use angled feeler gauges to check valve lash; adjust if necessary.
11. Install valve mechanism cover.

Full service-parts list: 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.

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