Operation 8-2 Another Method To Set Number 1 Piston To Tdc - Perkins New 1000 Series Workshop Manual

8
New 1000 Series
Another method to set number 1 piston to TDC on the compression stroke Operation 8-2
1 Fasten a temporary pointer to the timing case cover (or other suitable position) with its tip near to the outer
edge of the crankshaft damper or pulley.
2 Loosen the gland nuts that retain the atomisers, see Operation 11-4.
3 Remove the rocker cover, see Operation 3-1.
4 Rotate the crankshaft clockwise, from the front, until the push rod for the inlet valve of the rear cylinder just
tightens.
5 Rotate the crankshaft a further 1/8 of a turn clockwise. Insert a suitable lever between the rocker lever and
the valve spring cap of number 1 inlet valve. Open the inlet valve and put a spacer approximately 5,0 mm
(0.2 in) thick between the valve tip and the rocker lever.
6 Slowly rotate the crankshaft counter-clockwise until the piston makes contact with the open valve. Make a
temporary mark on the damper or pulley to align accurately with the tip of the pointer.
7 Rotate the crankshaft clockwise one or two degrees and remove the spacer between the valve and the
rocker lever. Rotate the crankshaft 1/4 of a turn counter-clockwise. Put the spacer between the valve tip and
the rocker lever.
8 Slowly rotate the crankshaft clockwise until the piston makes contact with the open valve. Make another
temporary mark on the damper or pulley to align accurately with the tip of the pointer.
9 Make a temporary mark at the centre point between the two marks on the damper or pulley and remove the
other two marks. Rotate the crankshaft counter-clockwise 1/8 of a turn and remove the spacer between the
valve and the rocker lever. Slowly rotate the crankshaft clockwise until the mark on the damper or pulley aligns
accurately with the tip of the pointer. Number 1 piston is now at TDC on the compression stroke.
168 Workshop Manual, TPD 1350E, Issue 4
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