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 261 of 644
FIELD MAINTENANCE
TROUBLESHOOTING PROCEDURES - LEFT REAR CORNER DOES NOT RAISE IN SPRUNG OR UNSPRUNG
MODE
INITIAL SETUP:
Tools and Special Tools
Tool Kit, General Mechanic's: Automotive
(WP
0054, Table 1, Item 7)
Parts Kit, Hydraulic (WP
0054, Table 1, Item 3)
Personnel Required
Construction Equipment Repairer, 91L (Two)
References
WP
0038
Equipment Condition
Vehicle MASTER power OFF (TM 5-2350-262-10)
Vehicle on jack stands (TM 5-2350-262-20)
TROUBLESHOOTING PROCEDURE
LEFT REAR CORNER DOES NOT RAISE IN SPRUNG OR UNSPRUNG MODE
WARNING
•
High oil pressure is present in the M9 ACE hydraulic system. Do not disconnect any
hydraulic system component unless hydraulic system pressure has been relieved. After
hydraulic system has been relieved, wait at least four minutes before disconnecting any
hose or fitting. Ensure each of the hydraulic control levers is moved several times through
all positions and the hydraulic tank dipstick is slowly loosened to relieve pressure. Failure
to comply may result in severe injury or death to personnel.
•
Transmission shifting lines are pressurized. Do not disconnect lines, fittings, or
accumulator unless transmission shift control valve pressure has been relieved.
Discharge transmission shift accumulator by moving shift control lever through all forward
and reverse ranges several times, with engine off. Failure to comply may result in severe
injury to personnel.
NOTE
No. 4 left and right actuators provide vehicle suspension in SPRUNG mode and allow vehicle
to raise and lower in UNSPRUNG mode. The compensating pump provides fluid through
line 9 for SPRUNG mode and line 11 for UNSPRUNG mode.
TM 5-2350-378-23&P
0016
0016-1
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