TM 5-3805-292-23
0006
POWERTRAIN TROUBLESHOOTING - ONE DRIVE MOTOR
(RIGHT OR LEFT) WORKS CORRECTLY AND THE OTHER DOES NOT
0006
Perform Checks To Do Before
Problem still
Stop.
Troubleshooting Hydrostatic
NO
exists?
System (WP 0007).
YES
WARNING
DO NOT disconnect or remove any hydraulic system line or fitting unless engine is shut
o
down and hydraulic system pressure has been relieved. Tighten all connections before
applying pressure. Escaping hydraulic fluid under pressure can penetrate the skin.
Use a piece of cardboard, newspaper, or wood to check for pressurized leaks, to prevent
o
fluid penetrating the skin.
Contact with engine/hydraulic oil can damage skin. Wear gloves when handling engine/
o
hydraulic oil. If oil contacts skin, wash it off immediately. Failure to follow this warning may
result in injury to personnel.
Problem still
Perform Checking the DA
Stop.
NO
exists?
Pressure (WP 0007).
YES
Perform Checking Charge
Problem still
Pressure/Flow (WP 0007).
Stop.
NO
exists?
Stroke control lever.
YES
Perform Checking Circuit Relief
Problem still
Valve Pressure (WP 0007) for
Stop.
NO
exists?
drive motor with problem.
YES
Cap two large lines at drive motor
Pressure still
in question and repeat Checking
Replace drive motor (WP 0066,
NO
Circuit Relief Valve Pressure
low?
YES
Replace tandem pump