Skoda 105 s 1980 Workshop Manual page 82

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4 . 3 - 4 . 4
F
I
t
F
i
!
I
r
l f t h e s h i m s c o n n o t b e s e t u p e x o c t l y t o t h e
c o l c u l o t e d t h i c k n e s s , d e t e r m i n e o t h i c k n e s s
w h i c h w o u l d r e s u l t i n o p r e l o o d d u e t o o n
o v e r o l l i n c r e o s e o f 0 . 0 3 t o 0 . 0 7 m n r o f t h e d i -
r n e n s i o n o f t h e s h i m s .
2 7 . P l o c e t h e t o p e r e d r o l l e r b e o r i n g o n t h e
r e s p e c t i v e b o r e , b o l t t h e o t h e r M P 5 - 1 0 7 i i g o n
t h e h o u s i n g o n d r o t o t e t h e c e n t r e b o l t t o p r e s s
t h e b e o r i n g i n t o t h e h o u s i n g o s f o r o s i t w i l l g o .
R e m o v e t h e i i g , f i t t h e s h r u n k - o n r i n g o n t h e
s t o r p i n i o n , a n d l o c k t h e r i n g i n p o s i t i o n u s i n g
o c i r c l i p . L u b r i c o t e t h e b e o r i n g w i t h o i l , f i t t h e
r e s p e c t i v e s h i m s o n t h e b e o r i n g o n d t h e g o s k e t
o n t h e c o v e r , o n d b o l t d o w n t h e c o v e r .
T u r n o v e r t h e h o u s i n g o n d p r e s s - i n t h e o t h e r
b e o r i n g i n t h e s o m e m o n n e r ( t h e p r e s s - f i t t i n g
i i g i s o l r e o d y i n p o s i t i o n ) , i n s t o l l t h e p r e p o r r e d
s h i m s , o n d b o l t d o w n t h e c o v e r w i t h i t s g o s k e t .
2 8 . M e o s u r e h o w d e e p i s t l r e d r i v e s h o f t
b e o r i n g b e l o w t h e l e v e l o f t l r e h o u s i n g s u r f o c e
o n d c o m p e n s o t e t h e d i f f e r e n c e w i t h s h i m s u p
t o o m o x i m u m p r o t r r r s i o n o f 0 . I m m - F 0 . 0 5 r n n r .
F i g . 4 . 3 / 4 - P r e s s - f i t t i n g o f D i f f e r e n t i o l T o p e r e c l
R o l l r : r B e o r i n g s U s i n g M P 5 - 1 0 7 J i g
S h i m s 0 . 1 n r m t o 0 . 2 m m t h i c k o r e o v o i l o b l e .
F i t t h e g o s k e t o n d t h e o s s e m b l e d c o v e r o n t h e
h o u s i n g o n d f o s t e n i t w i t h n u t s o n d s p r i n g
w o s h e r s ( f o r t h e c o v e r r e f e r t o C h o p t e r 4 . 5 ) .
S w i n g d o w n t h e b e o r i n g w i t h t h e s p e e d o -
m e t e r d r i v e g e o r s i n t h e c o v e r i n t o e n g o g e -
n r e r r t w i t h t h e p i n i o n d r i v e g e o r o n d l o c k t h e
b e o r i n g i n p o s i t i o n b y t i g h t e n i n g t h e n u t o f t h e
b e o r i n g c l i p .
Adjusting crownwheel
Bearing
Alternative Method
a ) C r o w n W h e e l B e a r i n g P r e l o a d .
T o o l s
D i a l T e s t G a u g e a n d S t a n d
M P s - 1 O G l e v e r
S e t t i n g : P r e l o a d O . O b - O . 1 0 m m
1 . B e f o r e a s s e m b l i n g T r a n s m i s s i o n c a s i n g
remove outer crown wheel bearing races. Leave
t h e b e a r i n g s o n t h e d i f f e r e n t i a l h o u s i n g .
2. Assemble transmission. DO NOT carry out
operation 17 above.
3 . F i t t h e o u t e r r a c e s i n t o c a s i n g p r e s s i n g i n t o
place using coned cover. Do not forget to fit
gaskets. On the Selector Shaft side (side B) of the
c a s i n g f i t a p p r o x i m a t e l y O . 6 0 m m o f s h i m s
between the coned cover and outer races. Ensure
there is backlash between crownwheel and
p i n i o n , i n c r e a s e t h e s h i m t h i c k n e s s i f r e q u i r e d .
4 . F i t D i a l t e s t g a u g e s o t h a t p o i n t e r r e s t s o n
t h e d i f f e r e n t i a l a s s h o w n i n f i g . 4 . 3 / 1 A .
5. Lift Crownwheel assembly to determine
c l e a r a n c e b e t w e e n b e a r i n g s ( a ) . . . l f t h i s e x c e e d s
O . 2 O m m d e c r e a s e t h e c l e a r a n c e t o b e t w e e n O . O 1
a n d 0 . 2 0 m m b y f i t t i n g s h i m s t o N o n - s e l e c t o r s i d e
o f c a s i n g . ( b ) . . . W h e n t h e c l e a r a n c e i s b e t w e e n
0 . 0 1 a n d 0 . 2 0 m m t a k e a r e a d i n g . A d d t o t h i s 0 . O S
t o 0 . 1 0 m m . M a k e a s h i m p a c k t o t h i s t h i c k n e s s
and fit to non-selector side (side A) of transmission
c a s i n g . C h e c k s o m e b a c k l a s h s t i l l e x i s t s b e t w e e n
t h e C r o w n w h e e l a n d p i n i o n .
Example
1 s t D i a l r e a d i n g 0 . 3 O m m
0.20 mm Shim fitted on non-selector side.
2 n d D i a l r e a d i n g 0 . 0 7 m m
Shim pack required between
0 . 0 7 + O . O 5 = O . 1 2 m m a n d 0 . O 7 m m * O . 1 O m m
= 0 . 1 7 m m
S h i m s i z e s a v a i l a b l e .
0 . 0 8 , O . 1 4 , O . 2 O a n d O . S O m m
S h i m s i z e s e l e c t e d O . 1 4 m m . T h i s w i l l g i v e
O.07mm preload tension to crownwheel
b e a r i n g s .
The Crownwheel should now turn freely with
little drag.
F i s . 4 . 3 / 1 A
8 2

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105 l 1980120 le 1980120 l 1980120ls 1980120 lse 1980

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