TM 5-2350-378-23&P
0025
Table 4. Possible Symptoms Of Failed HDC System Components - Continued.
HDC SYSTEM
POSSIBLE CONSEQUENCES
Solenoid Valve V4 - Shutoff valve - No. 4 left actuator
SPRUNG MODE:
port 9
No hydraulic fluid supply (9) to left rear wheel
valve.
Wheel valve in unsprung position.
No hydraulic fluid supply (9) to left rear actuators
3 & 4.
Rear left of vehicle will not be raised.
Left rear of vehicle will drag or bottom out.
No suspension shock absorbing capability on
rear left side.
UNSPRUNG MODE:
No hydraulic fluid supply (9) to left and right rear
wheel valves.
No hydraulic fluid supply to left actuators 3 & 4
and right actuators 3 & 4.
Rear of vehicle will not be raised.
Solenoid Valve V5 - Shutoff valve - right hand
SPRUNG MODE:
suspension
No hydraulic fluid return (17).
Delay in intermediate valve operation.
Delay in raising right front side.
UNSPRUNG MODE-LOWER:
No hydraulic fluid supply (17 lower) to
intermediate wheel control valve.
No hydraulic fluid supply (17) to right front
actuator 1.
Inability to completely lower right front side of
vehicle.
UNSPRUNG MODE-RAISE:
No hydraulic fluid return (17) from right front
actuator 1 & 2.
Hydraulic fluid will return through (7).
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03/15/2011Rel(1.8)root(maintwp)wpno(M10001)