TM 5-3805-293-23-3
0043
PISTON PUMP CHARGE PRESSURE TEST CONTINUED
00043
9. Start engine and synchronize left steering joystick (TM 5-3805-293-10). Warm hydraulic oil from 122 to 140F
(50 to 60C) (WP 0005).
10. Set engine speed to low idle. Record readings from pressure gauges.
11. Set engine speed to full throttle. Record readings from pressure gauges.
12. Set engine speed to low idle.
13. Place transmission control switch in the 1F position (TM 5-3805-293-10).
14. Select maximum CREEP speed. Record readings from pressure gauges.
15. Set engine to full throttle. Record readings from pressure gauges.
16. Check pressures in Table 1. AWD Charge Pressure for acceptable ranges.
Table 1. AWD Charge Pressure.
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AWD
Engine
Left Hand
Right Hand
State
Speed
Charge Pressure
Charge Pressure
Acceptable Tolerance 29 psi (200 kPa)
OFF
Low
275 psi
305 psi
(2,100 kPa)
(1,900 kPa)
OFF
High
350 psi
375 psi
(2,400 kPa)
(2,600 kPa)
ON, Max Aggression,
Low
275 psi
275 psi
Operating in 1F
(1,900 kPa)
(1,900 kPa)
ON, Max Aggression,
High
350 psi
350 psi
Operating in 1F
(2,400 kPa)
(2,400 kPa)
N OT E
Charge pressure at front pump is higher than charge pressure at the rear pump when
AWD system is "OFF". The pressures may be outside of the specified range if this test is
performed outside of prescribed temperature range.
17. Stop machine (TM 5-3805-293-10).
18. Shift the transmission control switch to NEUTRAL position (TM 5-3805-293-10).
19. Disengage AWD system (TM 5-3805-293-10).
20. Set park brake (TM 5-3805-293-10).
21. Shut off engine (TM 5-3805-293-10).
