TM 9-2320-260-34-1
5-25. FUEL PUMP CALIBRATION
THIS TASK COVERS:
h.
Checking and Adjusting Throttle Lever Travel
a. Throttle Shaft Cover Removal
i.
Testing and Adjusting Pump Main Pressure
b. Mounting Pump to Test Stand
c. Fuel Pump Run-In
Testing and Adjusting Fuel Pressure
j
k.
Testing and Adjusting Governor Fuel Pressure
d. Testing Pump Seals for Leaks
1.
e. Testing Governor Cutoff RPM
Checking and Adjusting Governor Weight Pressure
m.
Testing and Adjusting Idle Speed (VS Governor Only)
f. Testing and Adjusting Throttle Leakage
n.
g. Testing and Adjusting Idle Speed
Shutdown and Removal from Test Stand
INITIAL SETUP
APPLICABLE MODELS
MATERIALS/PARTS
Ball bearing (Appendix D, Item 3)
All
Two screws (Appendix D, Item 378)
SPECIAL TOOLS
Lockwasher (Appendix D, Item 225)
Spring pack adjusting tool
GAA grease (Appendix C, Item 14)
(Appendix B, Item 100)
Lubricating oil (Appendix C, Item 21)
Travel template (Appendix B, Item 101)
Calibrating oil (Appendix C, Item 5)
Shaft installation tool
Antiseize tape (Appendix C, Item 50)
(Appendix B, Item 104)
REFERENCES (TM)
Gear pump block plate
TM 9-2320-260-34P-1
(Appendix B, Item 103)
TOOLS
EQUIPMENT CONDITION
General mechanic's tool kit
Fuel pump removed (para. 5-13).
(Appendix B, Item 1)
Manual fuel pump shutoff valve removed
TEST EQUIPMENT
Fuel injection pump tester stand
(Appendix B, Item 88)
a. Throttle Shaft Cover Removal
1.
Remove nut (7), lockwasher (6), washer (5), screw (9), washer (8), and lever (4) from accelerator
shaft (2). Discard lockwasher (6).
NOTE
Perform step 2 if throttle shaft cover has not been removed.
2. Remove two drive pins (10) and cover (3) from fuel pump (1). Discard drive pins (10).
b. Mounting Pump to Test Stand
1. Install adapter ring (14) on adapter bracket (13) with four washers (12) and screws (11).
2. Install adapter bracket (13) on test stand (20) with clamp bar (18).
3. Install fuel pump (1) on adapter bracket (13) and adapter ring (14) with four washers (17) and
screws (16).
4. Position coupling drive (19) in test stand drive coupling (15).
5. Slide fuel pump (1) forward to engage coupling drive (19) with test stand drive coupling (15) on test
stand (20).
