Injection
Pump
Inspection while
on
the
Engine
Never attempt
to
disassemble the pump unless it is
necessary.
If the pump is assumed defective, it is
recommended
to
replace the pump assembly.
Injection
Pump
Removal
1.
Disconnect the fuel injection pipes.
2. Remove the tie-rod clip cover.
3. Remove the tie-rod clip and tie-rod.
Injection Pump Disassembly
1.
Remove the stopper plate.
2. Unscrew the delivery holder. Take out the delivery
valve
and valve spring.
3. Remove the tappet roller and stopper pin.
4.
Remove the tappet, plunger spring, etc.
CAUTION
When replacing the plunger barrel, delivery
valve,
etc.,
do
not loosen the adjusting screw and
plate for each cylinder. When those parts have
been
replaced, it is necessary
to
measure
fuel
injection quantity
by
utilizing a pump tester and
cam box.
All parts removed from the pump
should be kept classified
by
cylinders and im-
mersed in clean fuel.
Injection
Pump Inspection
57
Inspection
Inspection
procedure
Criterial
Idling
speed
Measure
engine
speed.
900+
s
grpm
I)
Quickly
accelerate
No
remarkably
black·
Exhaust
smoke
color
engine
without
load.
2)
Apply
load
to
engine
smoke
exhaust
permitted.
Fuel
cut
·off
Turn
ignition
switch
to
OFF
A solenoid
acting
solenoid
from
ON.
sound.
'~fn1:lction
----
IJ
Pipes
I I I
M,~,e
,~'~
Control
rack--
movement
(Catching)
Inspection of Injection
Pump
0-
O-ring-Cracks
~
and deterioration
©
fj--
Wear and
scratch
~t~
- Plunger-Interference
11"
wear, scratch,
~
rust, seizure
I8J
I
®
o
e-Interference,
,
ri?Jc:::::,
wear
Westerbeke Engines
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