Lotus TURBO ESPRIT Service Manual page 303

The lower i n t e r m e d i a t e s h a f t s t e a d y b e a r i n g , i s a n o i l i m p r e g n a t e d s y n t h e t i c
( R a i l k o ) bush p r e s s e d i n t o a b r a c k e t b o l t e d
t o
t h e c h a s s i s f r o n t crossmember.
The p o s i t i o n o f t h e b r a c k e r
i s
s e t by j i g d u r i n g v e h i c l e m a n u f a c t u r e , and s h o u l d
n o t b e d i s t u r b e d u n l e s s t h e bush i s
t o
b e r e p l a c e d .
To r e p l a c e t h e b u s h , remove t h e two s c r e w s s e c u r i n g t h e b r a c k e t , and p r e s s
o u t t h e bush. P r e s s t h e new bush i n t o p o s i t i o n , where
it
i s r e t a i n e d by a r i b
a r o u n d t h e o u t s i d e o f t h e b u s h l o c a t i n g ' i n a g r o o v e i n t h e h o u s i n g .
The o i l
impregnated b u s h
i s
s e l f - l u b r i c a t i n g . F i t t h e b r a c k e t
t o
t h e c h a s s i s w i t h t h e
two
b o l t s , b u t d o n o t t i g h t e n
a t
t h i s s t a g e .
To R e f i t I n t e r m e d i a t e ' S t e e r i n g Column Assembly: With S . I . R .
'
I n o r d e r
t o
e n s u r e t h a t t h e l o w e r u / j i s n o t s l i d t o o f a r o n t o t h e p i n i o n
s h a f t , w i t h t h e c o n s e q u e n t d a n g e r o f t h e s h a f t end f o u l i n g t h e u / j s p i d e r , o r
o f t h e u / j f o u l i n g t h e c h a s s i s , a c i r c l i p i s f i t t e d o n t o t h e p i n i o n s h a f t
f o l l o w e d by a r u b b e r s p a c e r t u b e .
A l i g n t h e p i n c h . b o l t h o l e i n t h e lower u / j w i t h t h e f l a t on t h e p i n i o n s h a f t
a n d f i t t h e u / j o n t o t h e s h a f t t o a b u t t h e s p a c e r t u b e , o r u n t i l t h e s h a f t
e n d i s f l u s h w i t h t h e i n s i d e o f t h e u / j yoke. F i t t h e p i n c h b o l t and t i g h t e n
t o 22
-
27 Nm ( 1 6
-
20 1 b f . f t ) .
F i t t h e s h o r t e r end o f t h e u p p e r i n t e r m e d i a t e s h a f t i n t o t h e lower
i n t e r m e d i a t e s h a f t u / j w i t h t h e f l a t a l i g n e d w i t h t h e p i n c h b o l t h o l e .
R e t a i n w i t h t h e p i n c h b o l t and a new Nyloc n u t and t i g h t e n t o 2 4 Nm
(18
l b f . f t ) .
F i t t h e i n t e r m e d i a t e s h a f t assembly t h r o u g h t h e bulkhead s e a l . , t h r o u g h t h e
s t e a d y b e a r i n g , and i n t o t h e lower u / j w i t h t h e f l a t on t h e s p l i n e s a l i g n e d
w i t h t h e p i n c h b o l t h o l e . F i t t h e p i n c h b o l t and r e t a i n w i t h a new
M 8
Nyloc
h a l f n u t . T i g h t e n t o 24 Nm ( 1 8 l b f - f t ) .
R e f i t t h e u p p e r s t e e r i n g column assembly ( s e e s u b - s e c t i o n H B . 3 ) .
T e m p o r a r i l y f i t t h e s t e e r i n g wheel and t u r n a s n e c e s s a r y t o f i n d t h e p o i n t of
minimum c l e a r a n c e between t h e i n t e r m e d i a t e s h a f t assembly and t h e f u l l y
d e p r e s s e d c l u t c h p e d a l :
-
I f t h e lower s h a f t s t e a d y b e a r i n g was n o t d i s t u r b e d , c h e c k t h a t t h e r e i s a
minimum c l e a r a n c e o f 5 mm a t t h i s p o i n t .
-
I f t h e lower s h a f t s t e a d y b e a r i n g h a s b e e n renewed o r d i s t u r b e d , a d j u s t
t h e p o s i t i o n o f t h e b r a c k e t on t h e c h a s s i s t o a c h i e v e
a
c l e a r a n c e o f 5
-
7 m
b e f o r e t i g h t e n i n g t h e s t e a d y b e a r i n g f i x i n g b o l t s t o 11
Nm
( 8 1 b f . f t ) .
HB.5
-
TRACK
ROD
ENDS L TOE-IN ADJUSTMENT
The t r a c k r o d e n d s ( o u t e r b a l l j o i n t s )
are
t h r e a d e d o n t o t h e e n d s of t h e
t r a c k r o d s , a n d are s e c u r e d
t o
t h e hub c a r r i e r s t e e r i n g arms by t a p e r e d b a l l p i n
s h a n k s and Nyloc n u t s .
By s c r e w i n g t h e t r a c k r o d s i n o r o u t o f t h e r o d e n d s , t h e
e f f e c t i v e l e n g t h o f t h e t r a c k r o d s i s a l t e r e d , t h e r e b y p r o v i d i n g
a
means of
t o e - i n a d j u s t m e n t f o r t h e f r o n t wheels.
I n o r d e r t o m a i n t a i n t h e r e q u i r e d bump
steer
c h a r a c t e r i s t i c ,
it i s
i m p o r t a n t
t o e n s u r e t h a t t h e s t e e r i n g r a c k
i s
c e n t r a l i s e d i n t h e s t r a i g h t ahead p o s i t i o n ,
i . e .
b o t h t r a c k r o d s
are
t h e same l e n g t h , w i t h i n t h e l i m i t a t i o n s o f s t e e r i n g
wheel a l i g n m e n t ( s e e s u b - s e c t i o n HB.2).
Toe-in a d j u s t m e n t : B e f o r e measuring t h e f r o n t wheel a l i g n m e n t ,
s e t
t h e
car t o a
,
r i d e h e i g h t o f 170 mm below t h e c h a s s i s f r o n t crossmember.
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