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 111 of 644
FIELD MAINTENANCE
TROUBLESHOOTING PROCEDURES - BUMP STOPS INOPERATIVE
INITIAL SETUP:
Tools and Special Tools
Tool Kit, General Mechanic's: Automotive
(WP
0054, Table 1, Item 7)
Personnel Required
Construction Equipment Repairer, 91L (Two)
References
WP
0036
WP
0037
Equipment Condition
Vehicle MASTER power OFF (TM 5-2350-262-10)
Vehicle on jack stands (TM 5-2350-262-20)
TROUBLESHOOTING PROCEDURE
TROUBLESHOOTING PROCEDURES - BUMP STOPS INOPERATIVE
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
•
The bump stops limit travel of vehicle's No. 1 left and right suspension unit in the SPRUNG
mode. Hydraulic pressure is supplied to bump stops by the compensating pump through
SPRUNG/UNSPRUNG valve.
•
Perform these procedures for left and right bump stop.
TM 5-2350-378-23&P
0009
0009-1
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