Perkins UA Workshop Manual page 128

Four cylinder naturally aspirated and turbocharged diesel engines
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8
700 Series
Caution: When the valve spring is removed, ensure that the collets do not fall into the holes for the push rods.
Warning! Wear eye protection during this operation,
1 Remove the spring clip and the spacer from the front of the rocker shaft. Release the fasteners of the first
two pedestals of the rocker shaft.
2 Release the tappet adjustment screw and remove the front rocker lever. Tighten the fasteners of the rocker
shaft pedestals.
3 Remove the valve spring and the cap from the front valve with the valve spring compressor and the adaptor,
for the pedestal studs.
4 Allow the valve to be held by the top of the piston. Fasten a dial test indicator with its plunger in contact with
the top of the valve stem and with a reading shown on the gauge.
5 Rotate slowly, the crankshaft counter-clockwise 45°. Then slowly rotate the crankshaft clockwise until the
clockwise movement of the dial gauge pointer stops. With the pointer in the maximum clockwise position, the
piston for number one cylinder will be at TDC on the compression stroke.
Service operations
Remove the rocker cover, see Operation 3-1.
116
Workshop Manual, TPD 1392E, issue 3
This document has been printed from SPI². Not for Resale

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