Perkins 1106 — Finding Top Center Position for No. 1 Piston

Adjustments · engine

For the Perkins 1106, from the Perkins service manual.

Applies to: Perkins 1106

Procedure

1. Fasten temporary pointer to front cover.
2. Remove fuel injection nozzles and valve mechanism cover.
3. Rotate crankshaft clockwise until inlet valve pushrod of rear cylinder tightens.
4. Rotate crankshaft 1/8 turn clockwise; open No. 1 inlet valve with spacer.
5. Rotate crankshaft counterclockwise until piston contacts open valve; mark damper.
6. Rotate crankshaft clockwise one or two degrees; remove spacer.
7. Rotate crankshaft 1/4 turn counterclockwise; install spacer.
8. Rotate crankshaft clockwise until piston contacts open valve; mark damper.
9. Mark center point between two marks; remove other marks.
10. Rotate crankshaft 1/8 turn counterclockwise; remove spacer.
11. Rotate crankshaft clockwise until center mark aligns with pointer; No. 1 piston at top center.
12. Install valve mechanism cover and fuel injection nozzles.
13. Remove temporary pointer.

Full service-parts list: Perkins 1106 →

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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