SERVICE MANUAL
ROBERT BOSCH MODEL MW INJECTION PUMP
Section 11
18. After replacing fuel injection pump or replacing fuel
supply
lines,
prime
fuel
system
using
these
procedures:
a.
Loosen all six high pressure fuel lines at nozzle
end.
b.
Loosen hand priming pump handle.
c.
Operate
priming
pump
until
pump
action
becomes solid (harder to pump).
d.
Position injection pump shutoff lever in run
position with electric shutoff or mechanical cable.
e.
Crank engine for fifteen seconds.
f.
Operate
priming
pump
until
pump
action
becomes solid. Tighten priming pump handle
securely.
g.
Crank engine for fifteen seconds and observe
fuel/air leakage at each nozzle/ fuel pipe
connector. When fuel flows from each nozzle
connector, tighten connector.
h.
Start engine and operate until engine runs
smoothly.
REPLACING INJECTION PUMP
MOUNTING ADAPTER GASKET
The same procedures required to replace injection pump
should be followed to replace mounting adapter gasket
(Figure 26).
If a severe oil leak exists between mounting adapter and
injection pump housing, injection pump must be removed
and repaired. Timing pointer and injection pump hub
relationship will be changed if mounting adapter to
injection pump housing nuts are loosened.
IMPORTANT
DO NOT LOOSEN INJECTION PUMP TO MOUNTING
ADAPTER
NUTS
BECAUSE
INJECTION
PUMP
TIMING POINTER AND HUB RELATIONSHIP WILL BE
CHANGED.
Figure 26. - Mounting Adapter and Gasket Location
CGES-185-3
PRINTED IN UNITED STATES OF AMERICA
Page 20
