Toyota 14b User Manual

FU-30
FUEL
SYSTEM
-
lnjection Pump
Stop
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INSPECTION OF
INJECTION
PUMP
COMPONENTS
HINT: Do not touch the sliding
surfaces of
the
pump
plunger
and delivery
valves.
1. INSPECT DELIVERY
VALVES
(a)
Pull up the
valve
and
close the
hole
at
the valve seal
bottom
end
with
your
thumb.
When the valve
is released,
it
should sink
down
quickly
and stop at
the
position
where the relief
ring
closes the
valce
seat
hole.
lf
defective,
replace the
valve as a set.
(b)
Close the
hole at the
valve
seat
bottom end
with
your
t
,*
thumb.
I
-
-
lnsert
the
valve into the
valve seat and
press
down
I
with
your
finger. When
your
finger
is released, the
I
valve should
rise
back
to its original
position.
I
Reprace if defective
L
(c)
Remove
your
thumb
from the
valve seat
hole.
The valve should close
completely
by
its
own
weight.
Replace if defective.
HINT: Before using a
new valve set,
wash off the
rust
prevention
compound
with light oil or
gasoline.
Then re-wash with diesel
fuel
and
perform
the above tests.
2. INSPECT
PUMP PLUNGER, SPILL
RING
AND
DISTRIBUTIVE
HEAD
(a)
Tilt
the spill
ring
(distributive
head) slightly
and
pull
out
the
plunger.
(b)
When released, the
plunger
should sink
down
smoothly
into
the
spill
ring
(distributive
head)
by
its
own
weight.
(c)
Rotate the
plunger
and repeat the
test at various
positions.
lf
the
plunger
sticks at any
position,
replace the
parts
asa
set.
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Toyota 14b Specifications

General

Brand	Toyota
Model	14b
Category	Engine
Language	English