Toyota 2H Repair Manual page 183

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F U E L S Y S T E M Injec t i o n
INS PECT I ON INJECTION P U M P
N O T E :
Do n o t
plunger and delivery valves.
1 . I N SPECT D E L I V E R Y V A L V E S
( a ) Pull up t h e valve and
b o t t o m end w i t h your t h u m b .
W h e n t h e v a l v e is r e l e a s e d . it should s i n k down
q u i c k l y and
closes t h e valve
I f defective, replace
(bl Close
t
h u m b
I n sert the valve i n l O the valve seat and press
with your
valve
i l defeclive
Replace
! c ) Remove y o u r t h u m b from the
The v a l v e s h o u ld close c o m pletely by
If
Replace
NOTE:
Belore using a
prevention com pound
Then Ie-wash w i l h
lests.
2 . I N S PECT PUMP P L U N G E R S
l a ) T i l t the cyl inder s l i g h t l y and
(b) When
smoothly into
( c ) R o t a t e the
positions.
If t h e p l u n g e r
Pum p
l a u c h
t h e s l i d i n g s u rfaces o f t h e p u m p
close the
i
Slop a t the p os t ion
seat hole.
the valve a s a s e l
the h o l e a t the valve seat bottom e n d
f i n g e r .
When your
back:
should rise to i t s o ri g i n a l p o s i t i o n .
defective.
valve set, wash o f f the rust
new
with l i g h t oil or g a s o l i n e .
diesel f u e l and perform the a bove
p u l l
rel eased, t h e plunger
t h e cylinder by i t s
r
plunger a n d ep e
sticks a l any pos i t i o n , re place
F U - 5 5
h o l e al the v a l v e s e a t
where t h e relief ring
with yOur
down
finger i s released, the
valve seat h o l e .
its
own weig ht.
o u t t h e plunger.
should sink down
own weig h t .
at
t h e t e s t a t various
it
a s a set.