TM 5-3895-379-23
PROPEL AND VIBRATORY VALVE TESTS AND ADJUSTMENTS - CONTINUED
0184 00
CHARGE PUMP SYSTEM PRESSURE TEST
1.
Place propel control lever in NEUTRAL (TM 5-3895-379-10).
NOTE
Pressure tap is labelled "CP."
2.
Connect pressure gauge to pressure tap (1) to vibratory control valve (2).
NOTE
The charge relief pressure setting should be 360 + 20 psi (2482 + 138 kPa).
3.
Start and run engine at HIGH idle, 2325 + 25 rpm. Record pressure gauge reading.
4.
If needed, adjust as follows:
a.
Loosen locknut (3).
b.
Turn adjustment screw (4) clockwise to increase pressure, counterclockwise to decrease pressure.
c.
After adjustment, tighten locknut (3).
Lower rpm to LOW idle and recheck pressure. Pressure should be greater than 300 psi (2068 kPa).
d.
5.
Shut engine off.
6.
Remove pressure gauge from tap (1).
REVERSE MAIN RELIEF VALVE PRESSURE TEST
1.
Place propel control lever in NEUTRAL (TM 5-3895-379-10).
2.
Loosen setscrew (5) and turn needle valve thumbscrew (6) fully clockwise to close valve (7).
3.
Connect pressure gauges to two pressure taps (8) and (9).
1
3,4
2
5,6
8
9
401-2229
4.
Loosen adjuster locknut (10) on Pressure Override Relief (POR) valve (11).
5.
Turn adjuster (12) clockwise one-half turn. Tighten locknut (10).
6.
Start and run engine at HIGH idle.
0184 00-2
