The cylinder head must not be put down such that its entire weight rests on the valve guides. Place the cylinder head on the bench with the valve discs facing upwards. 4 Place a new valve in the valve guide with the valve stem end in the same plane as the edge of the guide. Use a suitable spacer under the valve stem.
5 Adjust the valve clearance for each cylinder according to: Valve clearance, settings 1 Loosen the adjuster screw locking nut (1) on the rocker arm. 2 Fit 885812 Timing tool to the adjuster screw (3). 3 Turn the adjuster screw (3) until zero clearance is obtained between the rocker arm and the valve.
This article will introduce maintenance procedures of Perkins generator 4000 Series engines. Make quite certian that the engine cannot be started in any way before undertaking any maintenance, particularly in the case of automatically starting generating sets.
The object of the measurement is to determine selection of the cylinder head gasket. Clean the mating surface, the cylinder block sealing surfaces and the cylinder head. Use cleaning spirits and 885516 Gasket scraper. Install spacers (3) and 9998678 Gauge rod (1) on the engine block sealing surface. Set the dial indicator (2) to ”0”.
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