Suzuki LT-4WD 1990 Service Manual page 420

C A M S H A FT C A M W E A R
W o r n -d o w n c a m s a re often t h e c a u s e of m isti m e d v a l ve o p e r­
ation res u lting i n red uced power o u t p u t . T h e l i m it of c a m w e a r
i s s p e c i f i e d fo r both i nt a k e a n d e x h a u st c a m s i n t e r m s of c a m
® ,
h e i g ht w h i c h i s to b e m e a s u re d w i t h a m i c ro m ete r .
R e p l a c e c a m s h aft i f i t i s f o u n d w o r n d o w n t o t h e l i m it .
0 9 9 0 0 - 2 0 20 2 : M icrometer ( 2 5 - 5 0 m m )
C a m h e i g ht
Service Limit I N . : 3 3 . 8 2 0 m m ( 1 . 33 1 5 i n )
EX . : 3 3 . 49 0 m m ( 1 . 3 1 8 5 i n )
C AM S HAFT J O U R N A L W E A R
Dete r m i n e w h e t h e r e a c h j o u r n a l i s w o r n d o w n to t h e l i m it o r
n o t by m easu r i n g c a m s h aft j o u r n a l o i l c l e a r a n ce w i t h t h e c a m ­
s h aft i n st a l l e d . U s e p l a s ti g a u g e to r e a d t h e c l e a r a n c e , w h i c h
i s s p e c i f i e d a s fo l l o w s :
C a m s haft journa l o i l clearance
S e rvice Limit : 0 . 1 50 m m ( 0 . 0 0 5 9 i n )
•
T i g h t e n t h e cyl i n d e r h e a d cover bolts eve n ly a n d d i a g o n a l l y
to t h e s p e c i f i e d t o rq u e .
T i g h te n i n g torq u e : 9 - 1 1 N · m
( 0 . 9 - 1 . 1 kg - m , 6 . 5 - 8 . 0 l b -f t )
N O TE:
To prop erly measure th e oil clearance with plas tiga uge, all
gask e t ma terial must b e rem o ved from fitting s urfaces o f
c ylinder head a n d co ver. D o n o t apply S UZUKI BOND No .
1 20 78/ 1 2 1 5
un til a fter the oil clearance has been determined.
If t h e c a m s h aft j o u r n a l o i l c l e a ra n c e m e a s u re d e x c e e d s t h e
l i m it , m e a s u re t h e o u ts i d e d i a m et e r o f c a m s h aft .
R e p l a c e e i t h e r t h e c y l i n d e r h e a d set o r t h e c a m s h aft if t h e
c l e a r a n c e is i n co rrect .
C a m s haft jou r n a l O . D . S t a n d a rd :
2 1 . 9 5 9 - 2 1 . 98 0 m m ( 0 . 8 645 - 0 . 8 6 5 4 i n )
0 9 9 0 0 - 2 0 20 5 : M icrometer ( 0 - 2 5 m m )
LT-F4WDXM ('91 -MODEL) 1 5- 1 8