Toyota 2H Repair Manual page 70

E M · 6 0
Marg i n �hi C kness .-'
E N G I N E M E CH A N ICAL - C y linder Head
(bl Using a caliper g a u g e, measure ·the bushing bore
diameter o f t h e cylinder head.
the bushing bore diameter of the cylinder head i s more
I f
1 4 . 0 1 8
t h a n
(e)
U s i n g S S T and a h a m m er, tap
b u s h i n g to w h e re there i s
0 . 5 9 8
SST 0 9 2 0 1 ·600 1 1
td l
U s i n g a s h a r p
bushing
(See page
a n d new valve stem.
I N S PECT AND GRIND VALVES
1 1 .
(£II G r i n d the valve o n l y enough to remove p i t s and car­
bon
tbl Check thai the valve i s ground to the correct valve
face angle.
V a l v e face a n g le :
(c) C h eck t h e valve head margin t h i c k ne s s .
Standard m a r g i n thickness
I n ta k e
E x ha u s t
M i n i m u m ma r g i n t h ic k n e s s :
I n t a k e
E x h a u s t
t h e valve h e a d m a r g i n t h ickness i s less t h a n m i n i m u m .
I f
rep l a c e t h e v a l v e .
(0. 5 5 1 9
m m i n . l . replace the cylinder head.
i
1 4 . 8 - 1 5 . 2
n . ! protruding from t h e
1 0
9 . 0 m m reamer, ream the valve g u i d e
obtain the standard s p e c i f i e d clearance
EM-59) between t h e v a lve guide bushing
44.5"
1 .4
m m
in.)
m m ( 0 . 0 5 5
in.)
1 . 8 ( 0 . 0 7 1
rnm
m m i n . )
0.9 (0.035
i n . )
1 . 3 ( 0 . 0 6 1
i n
a new valve g u i d e
cylinder
m m (0. 5 8 3 -
head.