Westerbeke 8.0KW-60Hz Service Manual page 43

FUEL INJECTION PUMP
3. Install each control sleeve with the center tooth in
alignment with the line mark of the control rack. Put
the plungers in position in the .barrels.
it.
CAUTION:
Make sure the notch In the plunger
Is toward the adjusting plate
4. Tappet installation. Move the control rack back and forth
while pushing down on each tappet to align the slot in the
tappet with the hole in the housing for the tappet guide
pin. Install the lock plates and tappet gnide pins in
position.
it.
CAUTION:
Anytime the Injection pump is
disassembled, new lock plates must be used.
5. Put the delivery valve holders in position and tighten
them to the specified torque.
it.
CAUTION:
Do not overtighten the delivery valve
holders. This can put end force on the barrels,
resulting in a failure of the plungers to move freely.
If the holders are not tightened to the specified
torque, engine oil would leak in the injection pump.
DELIVERY VALVE HOLDER TORQUE 4.5± D.5 Kg-m (44± 5 Nm)
6. Inspection after assembly.
a. After the injection pump has been assembled, check to
see it'the control rack moves freely without any
. binding or catching.
b. If the control rack fails to move freely, the possible
causes are:
' . Pumping element(s) sticking .
• Foreign particles lodged betweell control rack and
sleeves.
• Overtightening of delivery valve holder(s).
Disassemble and check the injection pump to locate
the cause of the tro~ble.
c. After the injection pump has been finally assembled,
check the injection timing. '
IMPORTANT
NOTE: When removing the injection pump for service
by a fuel injection shop. DO NOT send the timing
shims found under the injectIon pump with
the pump. Leave them witb the engine. Tbe
injection shop does not need the shims for any
repairs or service being performed Oll the pump.
Install
the pump back on the engine using tbese
timing shims to place the injection pump back into
proper timing with the engine.
Engines & Generators
37