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TM 10-4320-343-14
4.14.4 Control Box Maintenance. (Used on regulated models only)
This task covers: 4.14.4.1 Adjustments
4.14.4.2 Repair
4.14.3 Installation
INITIAL SETUP
Tools
General Mechanic's Tool Kit, (appendix B
Section III, Item 1)
32 mm socket (appendix B, Item 25)
Materials/Parts
Lockwashers (TM 10-4320-343-24P)
Equipment Conditions
Equipment shut down, refer to paragraph 2.5.2.2
General Safety Instructions
To prevent rolling or sliding, do not work on equipment
that is not securely stabilized.
Do not work on equipment without following standard
shop safety precautions.
4.14.4.1. Adjust.
WARNING
To prevent rolling or sliding, do not work on equipment that is not securely
stabilized. Ensure both wheels are secure. Failure to obey this warning may result
in serious personnel injury.
NOTE
Adjustment must be made with pump suction port connected to a source of
positive pressure of 10 psi or greater. This requirement can be fulfilled by using
another pump as suction pump, ahead of the pump to be adjusted.
a.
Remove four screws (Figure 4-55,1) and washers (2).
b.
Remove cover (3) from control box (4).
c.
Refer to figure 4-56 and set potentiometer as indicated below:
A
= 3 o'clock
I
= 8 o'clock
GAIN
= 9 o'clock
L
= Factory Set - Do not adjust
D
= 10 o'clock
Droop
= Fully Counterclockwise
d.
Refer to paragraph 2.5, start pump and immediately after engine has started open suction and discharge hoses of
lines connected to suction or discharge manifolds.
e.
Allow engine to warm up at idle for two minutes, then place mode selector to MANUAL position.
Change 1 4-103
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