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.
Read the amount of oil going through the flow meter. If
there are more than 4 liters/min (1 U.S. gpm) of
leakage, the motor has too much internal leakage and
must be repaired or replaced. While propelling, the
flushing valve sends 2 ± .5 gpm of additional oil.
Remove all test tooling and connect the oil line back to
Propel Motor Flushing Valve Test Procedure
Perform the propel charge relief valve pressure
test and the main relief valve pressure test, in this
module, before doing this test.
Install Tool (A) into the hydraulic oil tank. Operate the
machine until the oil temperature reaches 38C (100F).
Stop the machine. Make sure the parking brake is
applied and the propel control lever is in neutral. Block
the rear wheels.
Remove the side access panels, and disconnect the
brake solenoid connector (1). This allows the parking
brake to stay applied during the test.
Do not run the machine against the brake for
more than five seconds.
Install two test fittings (2) in drum propel motor flushing
Install two test fittings (4) in axle propel motor flushing