Service Manual

310-3000 IHT 7
FLUIDS
The fluids used in Hydro-Gear products have been
carefully selected, and only equivalent, or better
products should be substituted.
Typically, an engine oil with a minimum rating of
55 SUS at 210 F and an API classification of
SH/ CD is recommended. A 20W-50 engine oil
has been selected for use by the factory and is
recommended for normal operating tempera-
tures.
FLUID VOLUME
Fluid volume information is provided in Table 3.
FLUID LEVEL
Certain situations may require additional fluid to
be added or even replaced. Refer to Figure 3
for the proper fill port and fluid level port loca-
tions. Fill the unit until fluid flows out of the fluid
level port. Recheck the fluid level once the unit
has been operated for approximately 1 minute.
Purging may be required. Refer to the purging
procedures, Page 11.
FLUID CHANGE
This transaxle is factory filled and does not re-
quire regular oil change. In the event of oil con-
tamination or degradation an oil change may
improve performance.
Using transaxle removal procedure from Section
5, Page 12, remove transaxle and drain oil from
top fluid fill port. Fill unit per Table 3, reinstall
transaxle and perform purging procedures, Page
11.
In the event fluid change and filter inspection is
required, refer to Page 23, Disassembly/Assem-
bly instructions.
Caution
Do not overfill.
If you overfill the transaxle while the unit
is "cold", it may overflow as it reaches
normal operating temperatures. The oil
level should not be above the
manufacturer’s suggestions outlined
in this manual. This will allow the space
needed for the oil to expand as it warms
up.
Figure 3. 310-3000 Fluid Fill and Level Ports
Fluid Description
20W-50 engine oil
Volume
0.95 gal . (116.5 oz.)
Table 3. Fluid Volumes for the 310-3000 IHT