As the assembly is drawn
out it may be that the thrust
washer which is fitted to the
mainshaft will drop into the
case. Look for this washer and if
it does drop replace it tem-
porarily on the gearbox main-
shaft so that its location is
remembered. It will be necessary
during this operation to hold the
cam plate centrally to avoid
fouling either the upper or lower
portions of the gearbox case.
In some cases the selector
fork spindle may remain in the
gearbox. It is simply a push fit
into the gearbox and the cover.
Gearbox and Timing Cover Screws.
Fig. 10.
At, this stage it should be noted that there is a possibility of the top front engine mounting
stud dropping out of the crankcase if it is an easy fit in the case, and since it is essential that
this stud is in position before the gearbox and timing cover and the primary drive inner covers are
fitted the point should be borne in mind for reassembly. It is therefore,
a
wise precaution to replace
the two nuts on to this stud so that it is retained in position.
The only parts now left in the gearbox are the pinion sleeve and the main bearing. The
pinion sleeve can be driven through the bearing into the gearbox and this will release the gearbox
sprocket distance piece which fits over the pinion sleeve on the outside of the gearbox.
The pivot stub for the chaincase swinging arm unit is fixed to the bolts
and two locking plates that are turned up over the bolts. It that the stub
will have to be re
placed but it has to be removed to
allow replacement of the gearbox
mainshaft bearing if examination
proves this to be necessary.
Remove the stub by turning
back the locking plates and taking
out the four bolts, but obviously if
the mainshaft bearing has to be re-
moved it is better to do this when
the complete unit has been stripped.
The usual method of removal and
replacement is employed but it must
be tapped from the outside of the
gearbox and replaced from the inside.
The same applies to the layshaft
phosphor bronze bearing.
gearbox by four is
most unlikely
Gear Cluster.
Fig.
11.
Summary of Contents for TW2
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