Suzuki LT-4WD 1990, Service Manual

Page: 68 / 508

VALVE FACE WEAR
Measu re the th i c kn ess
G)
a n d , i f the th i c kness is
fou n d to have been red uced to the l i m it, rep l a ce
the va l ve.
N O T E :
V i su a l l y i nspect each valve for wea r o f its
seati ng face. R e p l ace a ny valve with an ab­
norma l ly worn face.
Se rv ice Li m i t
0 . 5 m m (0.02 i n )
VALVE STE M RUNOUT
Support the va l ve with
"
V
"
b l ocks, as s h ow n , a n d
c h e c k its ru nout w i t h a d i a l g a u g e . The va l ve m ust
be rep l aced if the ru nout exceeds the l i m it .
Se rvice Li m it
0 . 0 5 m m (0.002 i n )
09900-207 0 1
Magnetic stan d
N ot ava i l a b l e i n U . S. m od e l
09900-20606
D i a l gauge ( 1 / 1 00 m m )
VALVE HEA D RADIAL RUNOUT
P l ace the dia l gauge at right a n g l es to the va lve
head , a n d measu re the va lve h ead rad i a l r u n o ut .
I f it meas u res m o re t h a n l i m i t , replace the va lve .
Se rv i ce L i m i t 0 . 0 3 m m (0 .00 1 i n )
VALVE GUI DE - VA LVE STE M
CLEARANCE
Measu re the clea ra n ce i n two d i rect i o ns, " X" a n d
"Y", perpend icu l a r to each other, by rigg i n g u p t h e
d i a l ga u ge a s sh own .
I f t h e cleara nce measu red
exceeds the l i m i t speci f ied bel ow, then determ i n e
whether the valve o r t h e g u ide s h o u l d b e rep l a ced
to red u ce th e cl eara nce to with i n the sta n d a rd
ra nge :
Sta ndard Se rvice L i m i t
I N .
0.025 - 0 . 0 52 m m 0 . 3 5
(0.00 1 0 - 0.0020 i n )
(0 .0 1 4 i n )
E X .
0 .040 - 0 . 067 m m 0 . 3 5 m m
(0.00 1 6 - 0 . 0026 i n )
(0 .0 1 4 i n )
E N G I N E
3-32