TM-5-2350-378-23-P
ARMORED COMBAT EARTHMOVER (ACE), M9; HYDRAULIC DIAGNOSTIC CENTER
TECHNICAL MANUAL; FIELD MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST
JUNE 2012
TM-5-2350-378-23-P - Page 384 of 644
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
front
SPRUNG MODE:
•
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.
TM 5-2350-378-23&P
0025
0025-26
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