I.
Removing
tappet
Removed delivery valve
(NOTE]
Do
not
remove the injection-quantity
adjusting plates since this removal
makes
it
necessary
to
test the
pump
on a
bench tester.
If
necessary
to
remove
these plates, be sure
to
mark the plates
and
pump
body
to
aid reassembly.
Nozzle holders
(1)
From each nozzle holder, disconnect over-
flow pipe.
(2) Similarly disconnect injection pipe.
(3) Loosen nozzle holder securing bolts, and
remove the holder assembly.
(4) Break apart the nozzle
holder
assembly in
the following manner:
(a) Grip the holder body in 'the vise;
put
the
wrench
to
the retaining
nut
and loosen
the body. Use soft-metal pads (aluminum
or copper) between vise jaws and holder
ENGINE
body
to
protect
the body when tighten-
ing
the
vise.
(b) Take
out
shim washer, pressure spring,
flange, pressure pin and distance piece
in
that
order.
(c) Take nozzle
out
of
retaining nut.
If
the
nozzle will
not
come easily, shake
it
loose by tapping
on.
it
lightly with a
wooden mallet: be careful
not
to
damage
the needle valve part in the nozzle.
Disassembled nozzle holder
INSPECTION
Fuel filter
Visually examine the filtering element and,
if
it
is
found in clogged, deteriorated
or
damaged
condition, replace it.
Fuel injection
pump
" Delivery valve seat
If
the seat
is
found with evidence
of
poor
seating contact, replace it.
(I)
In
addition
to
the
above requirement, each
pumping element has
to
meet
the
following
requirement
as
proof
of
a
proper
fit
of
the
plunger in its barrel:
Into
the
barrel re-
moved
upon
injection
pump
disassembly,
insert its plunger
about
15
~
20
mm
(0.59
~
0.79 in)
of
the
way, leaving a
third
of
its length outside
the
barrel, while
holding
the
barrel horizontal;
then
angle
up
the
barrel slowly
by
about
60°. This
2-37
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