Perkins — To check the engine timing mark (Bosch EPVE)

Adjustments · Engine timing case / fuel injection pump gear

From a Perkins service manual — check it applies to your exact model before use.

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Procedure

1. Set the piston of number 1 cylinder to TDC on the compression stroke, see Operation 8-1.
2. Remove the fuel injection pump and its joint, see Operation 11-14.
3. Fit the distance piece 21825515 (A1) to the timing tool adaptor 21825512; align the key with the gear keyway and secure with the nut.
4. Loosen the screw (B4) on the timing tool 21825610, set it to the correct engine check angle, and tighten.
5. Loosen screw (B5) and fit the splined shaft (B3); loosen screw (B2) and fit the 90° pointer 21825514 (B1).
6. Fit the splined shaft of the timing tool to the adaptor; slide the timing tool against the adaptor and tighten screw (B5).
7. Loosen screw (B2); slide the pointer until its flat face is against the rear face of the timing case and tighten.
8. If the mark on the timing case is not correct, eliminate the mark and make a new mark along the pointer top straight edge.
9. Remove the timing tool and the adaptor.
10. Fit the fuel pump together with a new joint, see Operation 11-15.
11. Remove the dial test indicator and fit the valve springs and rocker lever; set number 1 inlet valve tip clearance to 0,20 mm.
12. Fit the rocker cover, see Operation 3-2.
13. Eliminate air from the fuel system, see Operation 11-25.

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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