Cy L I Nder Head; Roc K E R Arm - Suzuki LT-4WD 1990 Service Manual

3-3 1 E N G I N E
C Y L I N D E R H EA D C OV E R
D I S T O R T I O N
Afte r re moving sea l a n t ( S U Z U K I B O N D No.
1 20 7 8 ) from the fitt i n g s u rface of the cy l i n d e r
h e a d cover, p l ace t h e cy l i nd e r h ead cove r o n a
su rface plate and check for d i stort i o n with a
th i c kness gauge. Check poi nts a re shown i n photo­
g rap h .
Servi ce Li mit
·
I f the distortion exceeds the l i m i t, rep l ace the cy l ­
i nd e r head cover.
R O C K E R A R M S H A F T O . D .
Measure the diameter of roc ker a rm shaft with a
m i c rometer.
Sta nda rd
09900-20205
R O C K E R A R M I . D .
When checking the va l ve rocke r arm, the ins ide
d i a meter of the va l ve rocker arm and wea r of the
ca ms haft contacting su rface shou l d be checked .
Sta ndard
09900-20605
C Y L I N D E R H EA D D I S T O R T I O N
Deca rbon combustion cha m be r.
Check the gas keted su rface of the cy l i nder head
for distorti on with a st ra i ghtedge and th i ckness
gauge, ta k i n g a cleara nce rea d i n g at severa l places
as i nd i cated . I f the la rgest read i ng at any position
of the stra ightedge exceeds the l i m it, replace the

cy l i nder head .

Servi ce L i m i t
0.05 mm (0.002 i n )
1 1 . 966 - 1 1 .984 m m
(0.47 1 1 - 0. 47 1 8 i n )
M i cro meter (0 - 25 m m )
1 2 . 000 - 1 2 . 0 1 2 m m
(0.4724 - 0.4729 i n )
D i a l ca l i pers
N ot ava i l a b l e i n U . S. model
0.05 m m (0.002 i n )