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Fiat 411 R - Specifications, Assembly Clearances and Permissible Wear of the Differential Components

Fiat 411 R
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Reading
on
the
tool
quadrant
92.6
mm
Measure
read
on
the
pinion
—0,3
mm
Distance
befween
pinion
and
bevel
gear:
93
—~
0,3
=
92,?
mm.
The
ring
Rb
should
be
0,1
mm
thinner
{ham
the
one
insta/fed,
caicu/aied
by
subtracting
92,7
-—
92,6
=
==
0,1
mm.
Exampfe
No.
2.
d)
Check
with
a
dial
gauge
the
tooth
backlash
which
shouid
be
0,20
mm
(U.O08”J;
the
correct
backlash
can
be
obtained
by
shifting
adjusting
shims
Rc
from
one
support
to
the
other,
in
order
ta
set
the
bevel
gear
farther
or
nearer
the
pinion
as
required.
The
overhaul
thickness,
determined
according
to
paragraph
b}
should
not
be
aitered.
SPECIHCATIONS,
ASSEMBLY
CLEARANCES
AND
PERMISSHBLE
WEAR
OF
THE
DEFFERENTIAL
COMPONENTS
Wear
iimits
5
Wearlimits
.
Assembiy
clearances
mm
:1
(in)
mm
1
(in)
i
(0.008)
1
(0.unc4
to
0.0042)
(00059)
(00008
to
0.0037)
\
(00031
to
0.0052)
.
(0.004?
to
0.6697)
1
Between
pinion
and
crown
whee!
taeth
backlash
. .
0,20
Beiween
splines
of
differential
axles
and
their
gears
.
0,010
te
0,105
Diiferentiaipinion
and
geartoeih
backlash
.
.
. .
.
.
0,15
i
Between
bushes
and
differential
pinion
axle
.
.
.
.
0,020ia
0,093
Between
casing
and
differential
gears
. .
.
.
. .
.
0,030
to
0,153
Beiween
differential
lock
coiiar
and
casing
. . .
.
.
-
{}_120{¢0,245
0,4
i
0,5
0,25
o.ss
0,5
(0.015?)
(0.019?)
{0.0E]98)
(011133)
(0.0?
9?)
Specificaticns
i
mm
(i
rs}
Crown
wheel
adjustment
ring
s!1im)thicknesS
(Ra,
.
_.
_—‘3
-Ii-U1
r-0-I-P
O0
-1-A
(DU!
NI
O1
Differential
gear
ihrust
ring
thickness
(1)
.
.
. .
.
Differential
pinion
round
thrust
washer
thickness
.
i
-
.
i
:
I
e.1s§n
(i
0.0008}
.
{i
0.0004)
0.0531
E0
0.6509
0.0551
fo
0.0536
3
Fig-1103
-
-
~
-
-
-
-
-
-
.
-
.
.
.
.
. .
.
.
i
0,3-0,5-0.7
(toier.
-30,02)
0.011s-c.0197-0.0215(=1-_a.0ooa>
1
Bevéi
pinion
sifiiii
adjustment
shim
ticim:-ass
(between
Q
3,g.3!g.¢.4,1.4,g.4_3-4,4.4,5..4,5-
.
g_1495-0,;535_g_1575_g_15q4_g_1554_
Biniw
and
fear
fairer
bearing)
-
- - - - -
-
- -
-
4,?-¢,s
(toiar.
:1:
0,02)
1
0.1693-0.1732-0.1772-a.1a11-u.sa59-
1
Beveipifliw
shaiibearins
adiustmentshim
pa¢kihi¢i<-
ij
1,1-1.754,s-as-2-2,1-2,2-2,25-2,3
0.0569-0.05894:.07u9-o.o'14s~o.0?s7-\
mess
-
-
-
- - - - -
-
~
-
-
-
-
-
- - - -
-
-
§
(toler.
$0.01)
.
0.0827-0.0866-0.0386-nneoe
.
1
Tightening
torqué
of
bolts
assernbiing
pianetary
gear
casing
to
crown
wheel
.
.
.
.
.
.
.
.
.
.
. .
.
.
4.5
Y0
5
F4901
,
32'
to
36
ftib
i
Differential
¥ock
control
fork
spring
Spring
free
ienth
. . .
.
.
.
_
_
. . .
.
.
.
.
.
.
.
188
Spring
length
under
check
ioad
.
.
. .
.
.
.
. .
.
126,5
.
Check
load
.
.
.
. .
.
.
.
.
.
.
.
.
.
. .
.
.
.
.
.
28.5
to
31,5
ks
7.4036
4.9803
62,8
to
69,4
ib
_,
_
H
,_;.,__f_.
_
»
,_
»
_.,
.._..
V____
..
_________[
(1)
Rings
of
oversized
thickness
of
0.1
mm
(00039
in)
are
avaiiabie.
Wear
iimii
of
a
shim:
1
mm
(00394
in).
69
|
I
4
I
5
i
,m,.».,._m-<~._._,.....__.-.,.~.
i

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