Replacing Camwheels
Crankshaft Pinion. Fit the Woodruff key to the engine shaft and assemble the
pinion (shoulder side to the engine) to the shaft. When the pinion
is
correctly
positioned to the key
it
must be fully located by tapping
it
onto the shaft with a
hollow punch. Do not
fit
the nut
at
this stage.
Camwheels. To
fit
these, special tool
Z89,
Fig.
18,
must be employed. First
wsemble the keys to the camshafts, then screw on the centre tool (8). Slide the
camwheel over the tool and engage the keyway onto the key. Screw onto the
camwheel thread the outer tool
(C),
and onto (8) the left hand nut. Screw down
the nut until
it
contacts the outer tool, then, to prevent the camshaft turning when
the nut
is
screwed down, hold the end of the rod (8) with a suitable tool. When
the camwheel
is
fully located remove the tool and then
fit
the opposite camwheel.
Do not attempt to punch the camwheels onto the shafts, as the key will be brought
into contact with the shaft bushes and may cause considerable damage. If the
operator cannot avail himself of the special tool, the camshafts and camwheels can
be assembled before the two halves of the crankcase are fitted together. Fit the
camshafts to the timing side crankshaft half and then support them, when the cam-
wheels can be aligned to the keys and punched into position.
Fig.
18.
REPLACING
THE
CAMWHEEL
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