Specifications, Assembly Clearances And Permissible Wear Of The Differential Components - Fiat 411 R Service Manual

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
-I i - U1
r - 0 - I - P
O 0
-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<- i j 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).
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