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148
OPERATION
No.
ID
330-
3 : Over/zauling
the gearbox
ID
19
3
DISMANTLING
(see
Pl .43).
r-
Fit
the
gearbox
on
a stand
(stand
MR-3053-130,
see
P1.53).
Remove
the
cover
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
To
remove
the
shaft
bearing-housing
assembly
and
the
brake
disc
(see
P1.45):
4
Remove
the
screws
(1)
fixing
the
bracket
(2).
Remove
the
bracket
and
take
out
the
four
screws
(3)
fixing
the
bearing
housing.
Remove
the
assembly
from
the
gearbox
casing.
Remove
the
adjusting
washer
(4)
and
the
spacing
washer
(5).
b)
In
the
same
way
remove
the
other
shaft
bearing-housing
assembly
and
brake
disc.
4
Protectthe
brake
discs
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Uncouple
the
clutch
bell
housing
from
the
gearbox
casing.
Remove
the
bearing
races
from
the
clutch
bell-housing.
NOTE
- The
centre
of the
differential
is not
on
the
line
of
the
joint,
between
the
clutch
bell-housing
and
the
gearbox
casing;
for
this
reason
the
bearing
races
can
only
be
taken
out
sideways.
Hold
the
differential
against
the
gearbox
casing
and
remove
the
clutch
bell-housing.
Take
out
the
differential....................................................................................
Remove
the
top
bearing
cover
plate
(6)
and
the
lower
bearing
cover
plate
(7).
Save
the
adjusting
shims
(8)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Put
two
gears
in mesh.
Remove
the
starting
handle
dog
(9)
and
the
nut
(10)
locking
the
bearings
(spanner
1734-T,
see
P1.54,
fig.3)
. . . . . . . . . . . . . . . . . . . . . . . . . . . .._......................................................
Remove
the
rear
oil
seal
(11)
from
the
mainshaft,
the
washer
(12),
the
distance
piece
(13),
the
circlips
(14)
(use
circlip
pliers).
Remove
the
shim
(15),
the
bearing'(16),
the
1st
speed
pinion
(17)
. . . . . . . . . .
. . . . . . . .
$6.
.
.
. . . . . . . . . . . . . .
"
Loosen
the
front
bearings
(18
and
19)
by
striking
on
the
rear
end
of the
mainshaft
(20)
and
on
the
bevel
pinion
shaft
(23)
with
a mallet.
Extract
the
bearings
(extractor
1750-T,
fitted
with
shell
grips
and
pressure
pad
1738-T,
see
P1.57,
fig.1)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..~...
Remove
the
spindle
(21)
from
the
1st
speed
selector
fork
lever
(98)
( see
P1.48)
and
push
the
fork
towards
the
rear
. .
9
Drive
out
the
bevel
pinion
shaft
(23)
by
striking
the
end
with
a bronze
drift.
Remove
the
bevel
pinion
shaft.
Stand
MR-3053-130
14 mm
box
spanner
12 mm
spanner
14 mm
box
spanner
Rubber
protector
12-
17 mm
spanner
and
box
spanner
14 mm
box
spanner
Spanner
1734-T
Circlip
pliers
Extractor
1750-T
Shell
grips
1738-T
21 mm
box
spanner
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