TM 5-2350-378-23&P
0025
Table 4.
Possible Symptoms Of Failed HDC System Components - Continued.
HDC SYSTEM
POSSIBLE CONSEQUENCES
UNSPRUNG-RAISE:
No hydraulic fluid supply (3) to right front
actuators 1 & 2.
No hydraulic fluid return (17) from right front
actuators 1 & 2.
Front right of vehicle cannot be raised but is
already in sprung/raised position.
Solenoid Valve V3 - Shutoff valve - No. 1 actuator left
SPRUNG MODE:
front
No hydraulic fluid return (11) from left front
wheel valve.
Wheel valve stays in unsprung position.
No hydraulic fluid supply (9) to left front
actuators 1 & 2.
Front left of vehicle will not be raised.
No suspension shock absorbing capability on
left front side.
UNSPRUNG MODE:
No hydraulic fluid supply (11) to left front wheel
valve.
Wheel valve stays in sprung position.
No hydraulic fluid return (3) connection from
actuators 1 & 2 to DCV.
Undesired hydraulic fluid supply (9) to front left
actuators 1 & 2.
Left front of vehicle is raised to sprung position.
Undesired suspension dampening on left front
side.
UNSPRUNG-LOWER:
No hydraulic fluid supply (17) to front left
actuator 1.
No hydraulic fluid return (3) from left front
actuators 1 & 2.
Front left of vehicle will not be lowered.
UNSPRUNG-RAISE:
No hydraulic fluid supply (3) to left front
actuators 1 & 2.
No hydraulic fluid return (17) from left front
actuators 1 & 2.
Front left of vehicle cannot be raised but is
already in sprung/raised position.
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03/15/2011Rel(1.8)root(maintwp)wpno(M10001)