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ID
19
OPERATION
No.
ID
420-4
: Work
on the rear
h&f-axle
Op.
ID
420-4
229
Refitting
(see
Pl.
70).
To
prepare
the
hub
bearings
:
a)
Fit
the
outer
bearing
cup
(27)
of the
outer
bearing
(22)
and
fit
the
inner
bearing
(20)
in
the
hub,
using
a press.
Lightly
grease
the
outer
bearing
cups
in
order
to
facilitate
fitting
(screw
MR-4114,
see
Pl.
77,
fig.
3)
. . . . . . . . . .
b)
Determine
the
length
of the
distance
piece
(21)
(see
Op.
ID
420-3,
paragraph
12 b).
c)
Grease
the
outer
bearing
(22)
and
place
it
i&position.
Fit
the
sealing
ring
(26)
at a distance
"b"
= 4.5
mm
from
the
outer
face
of the
axle
arm.
To
assemble
the
hub
:
a)
Place
the
spring
(32)
and
the
wheel
locking
cone
(31)
in
position
after
oiling
them.
b)
Fit
the
wheel
positioning
dowel
(51).
Place
it
on the
housing
and
fit
it into
position
with
the
aid
of a drift..
. . . . . . . .
c)
Keeping
the
hub
in
a vertical
position
(support
1922-T,
see
Pl.
66,
fig.
1) place
the
stop
(30)
in
position,
using
a tube
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
To
fit
the
hub
:
a)
Place
the
stub
axle
on
the
axle
arm.
Hold
the
arm
with
the
hand
and
engage
the
bearing
(22)
on
the
stub
axle
journal
using
a press
and
a tube.
b)
Pack
100
gr.
special
bearing
grease
in
the
bearing
housing.
c)
Fit
the
distance
piece
and
the
washer
determined
in
paragraph
4 b).
d)
Grease
the
ball
cage
(20)
and
fit.
Fit
the
inner
cage
in position.
e)
Fit
the
bearing
thrust
washer
(19)
( see
Pl.
70 for
correct
positioning),
the
lockplate
and
the
nut
(18).
Tighten
the
nut
to
72 ft.
lbs
(10
m.
kg)
(grease
faces
and
threads).
Lock
the
nut.
Fit
the
hub
sealing
cap
(17)
packed
with
grease
(special
bearing
grease).
Fit
the
rubber
seal
of
the
oil
retainer
drain
tube
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Centre
the
brake
shoes
by
means
of
the
eccentric
bushes
(42)
and
the
cams
(48)
( see
Pl.
102)
(fixture
2115-T,
see
~1.
106).
Lock
the
nuts
of
the
brake
shoe
anchor
pins.
Turn
down
the
locking
piece
(41)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TOOLS
Screw
MR-4114
29-42
mm
box
spanners
Drift
dia.
= 8 mm
Length
= 80 mm
Support
1922-T
Tube
:
Internal
dia.
= 25 mm
Externaldia.
= 32 mm
Length
=
250
mm
Tube
:
Internal
dia.
= 25
mm
External
dia.
= 32
mm
Length
= 250
mm
36 mm
box
spanner
Fixture
2115-T
21 mm
box
spanner
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