TM 9-2320-260-34-1
5-25. FUEL PUMP CALIBRATION (Contd)
c. Fuel Pump Run-In
NOTE
Ensure all valves on test stand are closed to prevent leakage.
1. Open bypass valve (8), fuel pressure valve (7), and flow control valve (10) on test stand (1).
2. Open fuel shutoff valve (11) on fuel pump (3).
CAUTION
Check tachometer drive for clockwise rotation. If rotation is not
clockwise, reverse rotation of test stand. Failure to do so may
cause damage to equipment.
3. Apply lubricating oil to tachometer drive seal (2).
4. Start test stand (1) by depressing start button (6).
5. Place fuel heat switch (4) on test stand (1) in ON position.
NOTE
Fuel temperature for 45A calibrating oil must be 90-100F
(32-38C) and 80-100F (27-38C) for diesel fuel.
6. Place selector valve (9) in rotameter position.
7. Turn range crank (5) to high range position.
NOTE
Perform steps 8 and 9 for vehicles equipped with variable speed
(VS) governor.
8. Back out both high adjusting screw (12) and low adjusting screw (14).
9. Position governor throttle lever (13) to full fuel position.
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