High
Gear,
Oil
Seal and Mainshaft Bearing.
Remove the two long casing to
outer cover studs and the two dowels, casing to inner cover and press the high gear
out and into the casing. Ease the oil seal from the housing and discard.
I
/I
Remove the bearing retaining circlip and press the bearing out of the housing.
Check the gear for chipped or worn teeth and the shaft bearing for wear. Thoroughly
clean and degrease the journal bearing and dry with pressure air. Check for rough-
ness, pitting, indentation and float; make sure that the mainshaft high gear is a good
fit
in the inner race. When replacing, first warm the casing and then press the
bearing into the hous~ng, securing
it
with a circlip. Lubricate with oil when in
posit~on. Press a new
011
seal into the ball race housing with the part number on
the outside and the leather "rolling" towards the inside of the case. Insert the
high gear from inside the housing, through the bearing and press
it
fuliy:home.
Replacing the Chain Sprocket
and
Nut.
Support the high gear from inside the
casing and press the sprocket onto the high gear splines. Secure the casing in the
vice and with a block between the sprocket teeth and the vice, tighten the locknut
to the sprocket.
Arrow indicates
Camplate Plunger
Fig.
26.
GEARBOX CASING
IN
VICE
Showing the Carnplate
in
the top (4th) gear positions
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