TM 9-4110-255-14
5-43. INJECTION PUMP TESTING, REPLACEMENT, AND ADJUSTMENT.
This task covers:
a. Testing
b. Removal
c. Installation
d. Adjustment
INITIAL SETUP
Tools:
Materials/Parts:
Fuel Delivery Sight
Gasket
8, Section III, Appendix B
52, Appendix G
Materials/Parts:
Gasket(s) (0.2) (As Required)
49, Appendix G
Gasket(s) (0.1) (As Required)
Wiping Rags
54, Appendix G
9, Appendix E
Gasket(s) (0.3) (As Required)
Equipment Conditions:
60, Appendix G
Gasket
Refrigeration unit shut down (para 2-7) and battery
17, Appendix G
disconnected (para 4-35).
Left side door open.
a. Testing.
(1) Remove screw (1), flat washer (2), and cylinder casing (3).
(2) Remove three screws (4), cover (5), and gasket (6). Discard gasket.
CAUTION
Always use two wrenches when loosening the fuel pipe to prevent turning the nozzle or injection
pump fitting.
(3) Loosen two flare nuts (7) and remove fuel pipe (8).
(4) Connect a pressure gauge with a reading capacity of 8,532 psi (58,871 kPa) full scale to the M12 x 1.5
injection pump fitting (9).
(5) Set and secure the manual shut down lever (10) to the full open position (right).
WARNING
Before applying pressure to the gauge, be sure that all connections are tight, and that the fittings
are not damaged. Fluid escaping from a very small hole can be almost invisible. Use a piece of
cardboard or wood, rather than hands, to search for suspected leaks.
(6) Monitor the pressure gage reading and slowly turn the engine flywheel (11) clockwise. Note the maximum
pressure indicated on the gage. If the pressure does not reach 4,266 psi (29,435 kPa) or above, the
injection pump (12) must be replaced.
5-84
