OM864W 10/18
24
SP-12. INJECTION PUMP
1. Since operating conditions may vary considerably, it
is difficult to give a definite interval for checking the
injection pump. But as a rule, pump settings, maxi-
mum speed, idle speed and exhaust smoke should be
checked after every 2400 hours of operation. Service
of the fuel injection pump should only be done if
checks indicate pump malfunction.
2. Black smoke can be an indication of pump
malfunction. Before servicing the pump, check other
possible causes:
a. Check cleanliness of the air filter.
b. Check valve clearances.
c. Clean and check injectors.
3. Any repair which involves disassembly of the injec-
tion pump must be carried out by specially trained
mechanics with the proper tools and test equipment.
NOTE: All warranties on the engine become null
and void if the injection pump seals are
broken by unauthorized persons.
A.
Injection Line Clamps
B.
Fuel Injection Lines
C.
Fuel Feed Line
D.
Timing Mark Plug
E.
Fuel Return Line
F.
Injector (4)
G.
Throttle Lever
H.
Hand Priming Pump
I.
Air Vent Point
Figure 12:
Fuel System
J.
(4) Mounting Bolts
K
. Flare Nuts
Servicing
