TM 5-3805-290-23-1
TROUBLESHOOTING INTRODUCTION - CONTINUED
0004 00
OPERATIONAL CHECKS (POWERTRAIN)
0004 00
WARN I N G
When servicing this machine, performing maintenance, or disposing of materials such as engine cool-
ant, hydraulic fluid, lubricants, battery acids or batteries, and CARC paint, consult your unit/local
hazardous waste disposal center or safety office for local regulatory guidance. If further information is
needed, please contact The Army Environmental Hotline at 1-800-872-3845.
DO NOT disconnect or remove any hydraulic system line or fitting unless engine is shut down and
hydraulic system pressure has been relieved. Tighten all connections before applying pressure. Escap-
ing hydraulic fluid under pressure can penetrate the skin, causing injury to personnel.
At operating temperature, hydraulic oil is hot. Allow hydraulic oil to cool before disconnecting any
hydraulic lines. Failure to follow this warning may result in injury to personnel.
Lubricating/hydraulic oils used in the performance of maintenance can be very slippery. Immediately
wipe up any spills. Failure to follow this warning may result in injury to personnel.
To prevent injury to personnel, wear protective eye covering and gloves.
N OT E
Operational checks can be used to find leakage in system and components that are not functioning cor-
rectly. Operational checks can be used to determine whether pumps are functioning properly. When
you perform operational checks, check for these conditions:
a.
Abnormal noises in transmission.
b.
Abnormal noises in pumps.
c.
Abnormal engagement in clutches through all speeds.
After you have completed operational checks, inspect powertrain for any leaking, damaged, or worn
components.
1.
Start engine and allow transmission oil temperature to reach normal operating temperature (TM 5-3805-290-10).
2.
Operate machine in FORWARD and REVERSE directions while in AUTOSHIFT mode. Operate machine in all speeds
for both directions. Ensure machine operates in both directions and all speeds (TM 5-3805-290-10).
3.
Operate machine in all speeds while machine is in MANUAL mode. Use transmission direction and shift lever to oper-
ate machine in all speeds. Operate machine in both FORWARD and REVERSE directions (TM 5-3805-290-10). Ensure
machine operates in both directions and all speeds.
N OT E
MSD equipped with ET software can be used to view status of transmission neutralizer and programmable
parameters of transmission neutralizer can be changed by using ET.
4.
Place transmission neutralizer override switch in ON position. Operate machine in FORWARD direction and apply ser-
vice brakes. Ensure transmission neutralizes when brake system pressure reaches neutralization setpoint (TM 5-3805-
290-10).
5.
Stop machine. Shut down engine (TM 5-3805-290-10). Inspect powertrain components for any damaged parts or leak-
age.
