ROBERT BOSCH MODEL MW INJECTION PUMP
Figure 22. - Injection Pump Drive Gear
15. Tilt pump forward to drain lubricating oil from pump
and cap all openings.
16. Remove final filter to injection pump housing hose at
housing inlet connector. Remove fuel return hose
from fuel return check valve and cap all openings.
Remove timing pointer access plug from left side of
replacement injection pump mounting adapter. If
original injection pump is being reinstalled, some of
the following steps can be omitted.
Inspect engine emission decal and obtain engine
model and horsepower rating.
Select correct performance data guidelines and
verify that specified part number injection pump is
Install injection pump drive gear loosely to injection
pump using drive gear bolts and washers.
Rotate pump clockwise (as viewed from drive gear
end) until timing mark on pump drive hub is aligned
with timing pointer in adapter hole (Figure 23).
Figure 23. - Timing Pointer and Timing Mark
Rotate loosened pump drive gear counterclockwise
(as viewed from drive gear end) to 3/4 of full extent
of drive gear bolt slots.
Install final filter to injection pump hose and rubber
coated clamp. If the clamp is omitted, the hose may
rub on adjacent parts and leak.
Install final filter to pump housing hose to inlet
connector on pump housing.
Clean front cover plate and install new gasket and
injection pump assembly.
10. With injection- pump in position on engine, secure
pump adapter to front plate with bolts, nuts and
washers. Torque bolts and nuts to 24 ft-lbs. (33
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