Lotus TURBO ESPRIT Service Manual page 595

Turbo esprit; esprit s3 lotus
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SECTION QB
Key to Clutch S y s t e m Drawing
Page
3
1. Cover/Pressure P l a t e Assembly.
2. C e n t r e Plate.
3. R e l e a s e BearingICarrier Assembly.
( C a s t Type)
4. Spring, Fork t o Carrier.
5. R e l e a s e BearingICarrier Assembly
( F a b r i c a t e d T y p e )
6.
Spring, Fork t o Carrier.
7.
R e l e a s e Fork.
8. Pivot, Release F o r k , S3
9 .
S c r e w , Pivot Ball.
10. Pivot, R e l e a s e F o r k , Turbo.
11. s p l i t . p i n , Fork t o Pivot.
12. G r o m m e t , R e l e a s e Fork.
Adjuster S c r e w , R e l e a s e Fork.
L o c k n u t , Adjuster.
Lug, R e t u r n spring.
R e t u r n Spring, R e l e a s e Fork.
M a s t e r Cylinder.
Slave Cylinder, S3.
Slave Cylinder, T u r b o -
Bleed Nipple.
Push rod, S3.
Push rod, Turbo.
Flexible Hydraulic Pipe
.
Banjo.
Banjo Bolt.
Washer, Large.
Washer, Small.
GENERAL DESCRIPTION
T h e c l u t c h a s s e m b l y c o m p r i s e s a d i a p h r a g m s p r i n g p r e s s u r e p l a t e w i t h a s i n g l e
d r i v e n , d r y f r i c t i o n p l a t e .
The f r i c t i o n p l a t e
i s
f r e e t o s l i d e a l o n g t h e s p l i n e s
o f t h e c l u t c h s h a f t whose r e a r end
i s
s p l i n e d i n t o t h e g e a r b o x p r i m a r y s h a f t
a n d w h o s e f r o n t e n d i s s u p p o r t e d by a n e e d l e r o l l e r b e a r i n g i n t h e r e a r o f t h e
c r a n k s h a f t .
T h e c l u t c h r e l e a s e i s o p e r a t e d h y d r a u l i c a l l y v i a a m a s t e r c y l i n d e r a t t h e
p e d a l b o x and a s l a v e c y l i n d e r on t h e c l u t c h b e l l h o u s i n g .
On S e r i e s 3 m o d e l s
u n t i l l a t e ' 8 4 , t h e s l a v e c y l i n d e r
i s
mounted o n t o p o f t h e c l u t c h
h o u s i n g
t o g e t h e r w i t h a r e l e a s e f o r k ' p u l l o f f ' s p r i n g .
S e r i e s 3 c a r s f r o m l a t e ' 8 4
a n d a l l T u r b o m o d e l s u s e a s e l f a d j u s t i n g s l a v e c y l i n d e r mounted o n t h e r i g h t
h a n d s i d e o f t h e c l u t c h h o u s i n g .
QB 1
-
ADJUSTMENT
P e d a l
W i t h t h e c l u t c h p e d a l f u l l y d e p r e s s e d a n d t h e m a s t e r c y l i n d e r b o t t o m i n g
o u t , c h e c k t h e c l e a r a n c e b e t w e e n t h e l o w e r e d g e o f t h e c l u t c h p e d a l p a d
( m e t a l ) a n d t h e G R P b o d y .
I f n e c e s s a r y , a d j u s t t h e c l u t c h m a s t e r c y l i n d e r
p u s h r o d l e n g t h t o a c h i e v e a c l e a r a n c e o f 2
-
5
m m , i . e .
t h e p e d a l s h o u l d
j u s t t o u c h t h e c a r p e t .
2 .
W i t h t h e c l u t c h p e d a l r e l e a s e d , a d j u s t t h e p e d a l u p s t o p ( i f f i t t e d ) , o r
d i s c a r d i f n e c e s s a r y t o a c h i e v e 2
-
5
mm
upward f r e e p l a y o f t h e p e d a l ,
i.e.
t h e m a s t e r c y l i n d e r
i s
' t o p p i n g o u t t .
I f t h e m a s t e r c y l i n d e r p i s t o n i s r e s t r i c t e d f r o m r e a c h i n g
i t s
f u l l t r a v e l
i n e i t h e r d i r e c t i o n c l u t c h d r a g a n d / o r s l i p w i l l r e s u l t .
I f n e c e s s a r y , a d j u s t t h e b r a k e p e d a l p u s h r o d l e n g t h t o o b t a i n c o m p a t i b l e
p e d a l h e i g h t s
.
T h u s
s e t
u p t h e c l u t c h p e d a l s h o u l d r e q u i r e a d j u s t m e n t o n l y a f t e r
r e p l a c e m e n t o f a p e d a l box component.

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