Perkins 2800 Workshop Manual page 43

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5 Check the inlet and exhaust valves of the number 1 cylinder. If they are fully closed the piston is on its
compression stroke and the rocker levers can be moved by hand. If the rocker levers can not be moved
because the valves are slightly open, the piston is on its exhaust stroke. If it is on its exhaust stroke, withdraw
the timing bolt and turn the flywheel a further 360 degrees in the normal direction of rotation so that the number
1 cylinder is set to TDC on its compression stroke, then insert again the timing bolt.
6 Before each set of tappet clearances is adjusted, ensure that the roller of the rocker lever is fully against the
camshaft lobe.
7 Use a set of feeler gauges, inserted at the position shown (B3) between the valve bridge piece and the rocker
lever button, to check the tappet clearances for the inlet valves (C1) on cylinders 1, 2 and 4. Adjust the
clearances if necessary. Check the tappet clearance for the exhaust valves (C2) on cylinders 1, 3 and 5, and
adjust the clearances if necessary.
Continued
Workshop Manual, TSD3450E, Issue 1 33