TM 5-3895-382-24
Propel Motor Case Leakage Test
Drum Propel Motor
Refer
to
the
WARNING
on
the
first
page
of
Troubleshooting.
Tools Needed
4C-6500
Temperature Probe
1
4C-8689
Flow Meter
1
NOTE:
Install 4C6500 temperature
probe
into
the
hydraulic tank. Operate the machine until the oil
temperature reaches 38°C (100° F).
1.
Stop the machine. Apply the parking brake.
Drum Propel Motor
(1) Drum propel motor. (2) Oil drain line.
2.
Disconnect oil drain line (2) from drum propel motor (1).
3.
Connect a short length of hose to the fitting that line (2)
was connected to. Connect the other end of the hose to
the inlet of the flow meter. Connect the drain line to the
outlet end of the flow meter.
4.
Start and run the machine at low idle for several minutes
then run at high idle until the hydraulic oil temperature
reaches 38C (100F) again. Engine rpm should be
2350 ± 50 rpm.
5.
With the machine stationary read the amount of oil
going through the flow meter. If there is more than 4
liter/min (1 U.S. gpm) of leakage, the motor has too
much internal leakage and must be repaired or
replaced. While moving the flushing valve sends 2 gpm
of additional oil.
6.
Remove all test tooling and connect the oil line back to
the motor.
Axle Propel Motor
Refer
to
the
WARNING
on
the
first
page
of
Troubleshooting.
Tools Needed
4C-6500
Temperature Probe
1
4C-8689
Flow Meter
1
NOTE:
Install
4C6500
temperature
probe
into
the
hydraulic tank. Operate the machine until the oil
temperature reaches 38°C (100°F).
1.
Stop the machine. Apply the parking brake.
Axle Propel Motor
(1) Axle propel motor. (2) Oil drain line.
2.
Disconnect oil drain line (2) from axle propel motor (1).
3.
Connect a short length of hose to the fitting that line (2)
was connected to. Connect the other end of the hose to
the inlet of the flow meter. Connect the drain line to the
outlet end of the flow meter.
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