TM 5-3895-382-24
Vibratory Motor Case Leakage Test
Make
reference
to
WARNING
on
first
page
of
Troubleshooting.
NOTE:
Tests should be performed on tires or loose dirt.
Tires are recommended. Never operate the
vibratory system when the machine is on
concrete.
NOTE:
The oil temperature must be a minimum of 38° C
(100° F) to obtain accurate results.
1.
Make sure the parking brake is applied and the propel
control lever is in the NEUTRAL position. Make sure
the vibratory control switch on the propel control lever is
in the OFF position.
Vibratory Motor (Early).
(1) Vibrator motor. (2) Case drain hose to hydraulic tank.
Vibrato Motor (Later).
(1) Vibrator motor. (2) Case drain hose to hydraulic tank.
2.
Disconnect hose (2) from vibratory motor (1) and cap
the line. Connect a hose to the fittings from which hose
(2) was removed. Put the other end of the hose in a 19
liter (5 U.S. Gallons) container.
3.
Move the vibratory selector switch to the HIGH
AMPLITUDE position.
4.
Start and run the engine at high idle.
5.
Depress the vibratory control switch to the ON position
to start the vibratory system. At the same time the
switch is depressed, move the hose to a second 19 liter
(5 U.S. Gallons) container. At the end of one minute,
move the hoses back to the first, container.
6.
Depress the vibratory control switch to the OFF position
to stop the vibratory system. Stop the engine.
7.
Measure the amount of oil in the second container. If
there are more than 4 liters (1 U.S. Gallon), the vibratory
motor has too much internal leakage and must be
repaired or replaced.
8.
Remove the temporary case drain line and cap from
hose (2). Reinstall hose (2) to vibratory motor (1).
13-35
