TM 5-3805-293-23-3
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PISTON PUMP (BRAKE, HYDRAULIC FAN) MARGIN PRESSURE TEST AND ADJUST CONTINUED
18. If adjustment is necessary, perform following operation:
a. Shut off engine (TM 5-3805-293-10).
b. Loosen locknut (Figure 28, Item 3) on cooling fan and brake piston pump (Figure 28, Item 1).
c.
Turn adjustment screw (Figure 28, Item 2) clockwise, in 1/4 turn increments, to increase margin pressure
setting.
d. Turn adjustment screw (Figure 28, Item 2) counterclockwise, in 1/4 turn increments, to decrease margin
pressure setting.
e. Repeat steps 13 through 18 as needed to adjust margin pressure setting.
19. Shut off engine (TM 5-3805-293-10).
20. Tighten locknut (Figure 28, Item 2) on cooling fan and brake piston pump (Figure 28, Item 1).
Figure 28. Margin Pressure Adjustment.
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