Mitsubishi Heavy Industries SL Series Service Manual page 104

FUEL SYSTEM
2.2.5 Removing delivery valve
(a) The delivery valve, plunger and plunger barrel are
precision-machined parts. Do not smear or scratch
them.
(b) Keep the combination of the plunger barrel and
plunger for each cylinder when removing. Do not
mix the plunger barrel with the plunger of a differ-
ent cylinder.
(1) With pump housing faced up, grab the housing with a
vise.
(2) Remove the delivery valve holder.
(3) Remove the delivery valve gasket.
(4) Using a pair of tweezers, remove the delivery valve.
2.2.6 Removing plunger barrels
(a) Plungers and plunger barrels are precision-
machined parts. Do not smear or scratch them.
(b) Keep the combination of the plunger barrel and
plunger for each cylinder when removing. Do not
mix the plunger barrel with the plunger of a differ-
ent cylinder.
Remove the plunger barrels.
Note: (a) When replacing plunger barrels or delivery
valves, do not loosen the adjusting plates between
the cylinders.
(b) Replacement of any of those parts requires a
subsequent measurement of injection rate using a
pump test cam box.
(c) Parts that have been disassembled should be kept
in a container filled with a clean light oil.
8-10
Removing delivery valve holder
Removing delivery valve
Removing plunger barrel
Adjusting plate
Do not loosen adjusting plate