Service Manual
Assembly
Procedures
Prior to adding oil to the IHT
it
is recommended that you
test for leaks.
This
may be performed with a small hand
pump or by using compressed air and a regulator. Do not
allow more than
1
0
PSI to
be
applied or seal damage may
occur. To locate a leak, apply a soap mixture around the
housing seam and at all
lip
seals. Do not submerge unit
or the brake
will
be
damaged.
Check the oil level after fully purging the unit of air.
It
should be between
1.75"
and
2.0"
from the top of the
housing for the
31
0-0500,
and between
1.25"
and
1.62"
from the top of the housing for the
31
0-0750.
310-0500
Oil
Level
Test
for
Leaks
Oil
Fill
&
Start-up
Procedures
Fill
the IHT with a
2OW-50
engine oil. The correct volume
for fill should be
2½
quarts (80 ounces) for both the 310-
0500
and the
310-0750.
It is recommended that the unit
be
purged prior to
installing into the vehicle frame. The following is the
suggested purging procedures for repaired transaxles.
1
Spin the input
shaft
in a clockwise direction at
1000
-
1500
RPM.
This may
be
performed in a
drill press (or equivalent).
2
Engage (actuate) the bypass.
3
Stroke the control lever forward for five
seconds
and then reverse for five seconds. Do this three
times in each direction.
4
Return the control lever to neutral.
5
Disengage the bypass.
6
Stroke the control lever forward for five
seconds
and
then reverse for five seconds.
Do
this three
times
in
each direction.
NOTE:
It may be necessary to repeat these steps in the
vehicle to
fully
purge the
IHT.
After installing the IHT, make sure all linkages and
actuators are functioning properly. Refer to the Trouble-
shooting Section.
310-0500/0750IHT
Page
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