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 385 of 644
Table
4.
Possible Symptoms Of Failed HDC System Components - Continued.
HDC SYSTEM
POSSIBLE CONSEQUENCES
Solenoid Valve V4 - Shutoff valve - No. 4 left actuator
port 9
SPRUNG MODE:
•
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
suspension
SPRUNG MODE:
•
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).
TM 5-2350-378-23&P
0025
0025-27
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