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38. ASSEMBLY OF CRANKCASE.
Fit flywheels into case, and fit and tighten
all bolts.
Test for side float in the flywheels, there
should be .005".
If the float is excessive, remove wheels
from case.
Fit pen steel washers to the engine and
timing shafts to take up the excess of float.
Fit the same thickness of washers on each
shaft, keeping the wheels central in the case.
Check side float.
If the side float is correct, check connecting
rod for being central in case.
There is side float in the big-end.
Place fingers on the bottom of the connect
ing rod and push rod towards the timing
side of the case.
Measure the distance from the end of the
small-end bush to the side of the crankcase
mouth on the timing side.
Push rod to driving side of case and take
the same measurement, from the driving side.
The two measurements should be within
1/64" of each other.
Rod can be lined up by transferring the
pen steel washers on the driving and timing
shafts to whichever side needs them, to
obtain the correct alignment.
When the correct alignment is obtained,
remove wheels from case.
Lubricate main bearings and big-end.
Smear the two edges of the case with gold-
size or jointing compound.
Fit wheels into the case and tighten all
bolts and nuts.
If the valve stem lubricator (S.V. engines
only) has been removed from the timing side
of the case, re-fit. Screw lubricator into
case, and when tight the oil holes should
point towards the valve stems and the
bevelled side should face the cylinder
barrel.
Fit timing gears (para. 29), and panel
(para. 26).
39. FITTING ENGINE TO FRAME.
Fitting of the engine to the frame should
present no difficulty.
Lift engine into cradle and insert the two
cradle bolts.
Starting at rear engine plates fit all bolts
loosely, working finally to the front engine
plate bolt.
Tighten all nuts.
Fit clutch, oil bath, etc.
Fit and time magdyno.
40. REMOVING AND FITTING OF
TIMING GEAR BUSHES.
When engine is dismantled it may be
found that the timing gear bushes require
replacement. This is not a job to be under
taken by the average owner. The timing
cover and half crankcase should be
despatched to our service department.
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