TM` 9-2320-272-24-4
5-37. FUEL INJECTION PUMP CALIBRATION (Contd)
h. Manifold Pressure Compensator Test
1.
Set fuel pump (7) to 500 rpm and position control rack (12) between 0.041-0.042 in.
(1.040-1.060 mm) rack travel.
2. Apply 3.26 psi (22.5 kPa) of air pressure to manifold pressure compensator (6) and observe control
rack (12) travel. Correct control rack (12) travel is 0.429-04.36 in. (11.90-12.30 mm).
3. Increase air pressure of manifold pressure compensator (6) to 6.53 psi (45.0 kPa) and observe
control rack (12) travel. Correct control rack (12) travel is 0.468-0.484 in. (11.90-12.30 mm).
NOTE
Perform steps 5 through 8 if control rack travel deviates from
specifications.
4. Remove plug (14) from top of governor housing (13).
5. If control rack (12) travel is less than required specifications, turn screw (15) clockwise.
6. If control rack (12) travel is more than required specifications, turn screw (15) counterclockwise.
7 . Recheck control rack (12) travel. If control rack (12) travel is incorrect, repeat step 6 or 7. If control
rack (12) travel is correct, proceed to step 9.
8 . Install plug (14) on governor housing (13).
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