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154
OPERATION
No.
ID
330-
3 : &e&z&w
the
fearbox
ID
1:
-
TOOLS
24
. 25
Screw
in
the
threaded
stop
screws
(75)
f or
a few
threads
into
the
fork
shafts
and
fit
their
locknuts
(76).
Put
the
shaft
(96)
in
1st
speed
position,
screw
in
the
threaded
stop
screw
in
order
to
bring
it
against
the
shaft,
unscrew
the
socket
one
quarter
of
a turn
and
lock
the
locknut
(spanner
MR-3691-80,
see
Pl.
57,
fig.
2).
Carry
out
the
same
operation
for
the
2nd
speed
position
(shaft
96)
and
for
the
reverse
speed
shaft
(101)
. . . . . . . .
IMPORTANT
NOTE
- The
shaft
(99)
of
the
3rd
and
4th
speed
is
adjusted
when
the
cover
is
mounted
on
the
gearbox.
NOTE
- On
cars
delivered
after
January
1960,
this
adjustment
is
unnecessary.
To
prepare
the
differential
(see
Pl.
45)
:
a)
Fit
the
taper
roller
bearings
on
the
crown
wheel
and
differential
housing
(mandrel
1768-T,
see
Pl.
52,
fig.
2).
.
b)
Fit
the
fibre
washer
(55)
on
the
differential
housing
(oil
grooves
towards
the
planet
wheel)
and
a planet
wheel
(54).
Fit
a satelite
spindle,
a thrust
washer
(53)
(the
locking
tab
in
the
notch
in
the
housing).
Fit
a satelite
wheel.
Determine
the
thickness
of the
thrust
washer
for
this
satelite
so that
there
is
no
stiffness
when
turning
the
planet
wheel
which
should
have
a longitudinal
clearance
of
0. 35
mm
maximum.
Carry
out
the
same
operation
for
the
other
satelites,
fit
the
bush
(51).
c)
Fit
the
second
planet
wheel
(50)
and
the
crown
wheel
(48),
the
spindles
for
the
satelite
wheels
are
locked
by
set
screws.
Tighten
the
screws
to
43.5
ft.
lbs
(6
m.
kg)
(for cars delivered beforeJanuary
1960)
or
36
ft.
lbs
(5 m.
kg)
(for cars delivered since January
1960).
Make
sure
that
there
is
no
stiffness
when
turning
the
planet
wheel.
The
longitudinal
clearance
on
the
planet
wheel
is
0. 35
mm,
if
not,
try
another
planet
wheel..
. . . . . . . . . . . . . . . . . . . . .
d)
Dismantle
the
differential
housing.
Mark
the
parts,
oil
and
refit
On cars delivered
before
January
1960 1
lock
the
screws
by
means
of a wire
so
as
to
prevent
unscrewing
(see
Pl.
50,
fig.
3).
On cars delivered sincejanuary
1960
(with
8 x 31
crown
wheel
and
pinion)
there
are
no
lockwashers
for
the
screws.
Tighten
them
to
36
ft.lbs
(5
m.
kg).
To
prepare
the
differential
shafts
(see
Pl.
45)
:
a)
To
reface
the
brake
discs
:
Mount
the
shaft
between
centres,
the
disc
at
the
tailstock
end,
drive
by
means
of
a la$he
carrier
or
dog.
Face
up
the
disc
face
using
a facing
tool,
or
better
still,
a grinding
wheel.
If
the
lathe
permits,
face
up
the
other
face
of
the
disc
without
removing,
if not,
screw
a stud
in
one
of
the
holes
for
fixing
the
Bibax
and
reverse
the
assembly
between
the
lathe
centres.
Reface
the
other
face.
b)
To
check
the
disc
faces.
They
should
conform
to
the
following
conditions
:
Maximum
"run
out"
at
the
greatest
diameter:
0. 17
mm
at
two
diametrically
opposite
points.
Spanner
MR-3691-80
21
mm
spanner
Mandrel
1768-T
17 mm
box
spanner
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