Perkins — Finding Top Center Position for No. 1 Piston

Adjustments · Basic engine

From a Perkins service manual covering: 1103, 1103 Engine, 1104, 1104 Engine, 1104 Turbocharged Engine, SEBU7833-01. Check it applies to your exact model before use.

Applies to: Perkins 1103, Perkins 1104, Perkins 1103/1104 engine

Procedure

1. Remove the valve mechanism cover, glow plugs, and the cover for the front housing.
2. Rotate crankshaft until No. 4 inlet valve has just opened and No. 4 exhaust valve has not completely closed.
3. Carefully rotate crankshaft to align hole in crankshaft with hole in cylinder block and timing case.
4. Insert the 27610211 Crankshaft Timing Pin fully into the hole in the crankshaft web.
5. Insert the 27610212 Camshaft Timing Pin through the camshaft gear into the timing case body.
6. The engine is now set at the top center position for No. 1 piston.
7. Remove the timing pins from the camshaft gear and the crankshaft web.

Full service-parts list: Perkins 1103 →, Perkins 1104 →, Perkins 1103/1104 engine →

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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