TM-5-2350-262-20-1
ARMORED COMBAT EARTHMOVER (ACE), M9
TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL; VOLUME 1 OF 3
TM-5-2350-262-20-1 - Page 186 of 776
TM 5-2350-262-20-1
Section III.
GENERAL HYDRAULIC SYSTEM
TROUBLESHOOTING PROCEDURES
SCOPE
This section describes the general procedures for troubleshooting the M9 hydraulic system at the unit
maintenance level.
These procedures should be referred to before you start troubleshooting, and during
troubleshooting when these procedures are referenced in the troubleshooting charts of section IV. Procedures
contained in this section are listed below.
Page
General
..........................................................................................................................................
3-78
General Notes .
..................................................................................................................................
3-78
Preliminary Troubleshooting Procedures.
.........................................................................................
3-79
Suspending the M9 for Suspension System Checks.
.......................................................................
3-82
Relieving Hydraulic System Pressure.
..............................................................................................
3-82
Directional Control Valve Pressure Checks.
.....................................................................................
3-83
Accumulator Dump Valve Installation .
..............................................................................................
3-84
Main Hydraulic Pump Output Flow Rate Test.
..................................................................................
3-86
Main Hydraulic Pump Efficiency Test .
..............................................................................................
3-87
Directional Control Valve Identification .
............................................................................................
3-90
Hose and Tube Marker Bands Identification.
....................................................................................
3-91
Hydraulic Circuit Efficiency Test .
......................................................................................................
3-115
General suspension Troubleshooting Information .
...........................................................................
3-117
Suspension System Pressure Checks.
.............................................................................................
3-118
Actuator Leakage Check on Vehicle.
................................................................................................
3-120
Actuator Port Identification and Description.
.....................................................................................
3-121
Typical Corner Actuator Schematic Diagram .
..................................................................................
3-122
3-77
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