Engine timing gears.
(1) Timing gear for the fuel injection pump
(2) Timing gear for the camshaft
(3) Timing gear for the crankshaft
Damage to the timing case can occur If the
following event occurs: the crankshaft (3) is
rotated when the fuel injection pump is removed
from the engine. If the crankshaft needs to be
rotated, the fuel injection pump must be installed
and the fasteners for the gear tightened.
Perform the following functions after the fuel
injection pump has been removed and the
crankshaft has been rotated: Remove the timing
case cover. The timing marks on the face of the
timing gears must be aligned. Aligning the timing
marks of all the timing gears will approximately
set the top center of the number 1 cylinder on the
compression stroke. Then, the timing pin can be
Set The Top Center Position By The
(Lucas and Stanadyne)
Setting top center compression position.
(1) Temporary pointer
(2) Dial Indicator
Fasten a temporary pointer (1) to the front of the timing
cover. Put the tip of the pointer close to the edge of the
damper on the crankshaft or close to the edge of the
Remove the fuel injector nozzles and the rocker cover.
Rotate the crankshaft clockwise when you face the front
of the engine. Rotate the crankshaft until the pushrod
for the inlet valve of the rear cylinder begins to tighten.
Be careful when you rotate the crankshaft. The
number 1 inlet valve will be held in position on top
of the piston. If the crankshaft is not positioned
properly, the valve may fall from the cylinder
Rotate the crankshaft further by 1/2 of a turn in a
clockwise direction. Insert a suitable lever between the
rocker lever and the valve spring cap of the number 1
inlet valve. Open the inlet valve. Put a spacer that is
approximately 5 mm (0.2 inch) thick between the valve
stem and the rocker lever.
Slowly rotate the cranks haft in a counterclockwise
direction until the piston makes contact with the open
valve. Make a temporary mark on the damper or the
pulley in order to align accurately with the tip of the
Rotate the crankshaft in a clockwise direction by one or
two degrees. Remove the spacer that is between the
valve stem and the rocker lever. Rotate the crankshaft
by 1/4 of a turn in a counterclockwise direction. Put a
spacer that is approximately 5 mm (0.2 inch) thick
between the valve stem and the rocker lever.