Not for
Reproduction
28
30
3. After the oil has drained from the transaxle, remove the
oil filter (C) from the transaxle housing.
4. Install a new filter and a new O-ring onto the filter cover
and install the filter cover. Torque the filter cover to
480-580 in-lbs (54.2 - 65.5 Nm).
5. Remove the top oil fill vent port (D) and fill the transaxle
with new 20W50 motor oil through the expansion tank
until the oil reaches the oil fill vent port.
6. Install the top oil fill vent port plug and continue filling
the system with oil until the fill line is reached in the
expansion tank.
7. Repeat this process for the other side of the machine.
8. Perform the
Purging the Air from the Hydraulic System
procedure.
Purging the Air from the Hydraulic
System
Due to the effects air has on efficiency in hydraulic drive
systems, it is critical that it be purged from the system.
These purge procedures should be implemented any time a
hydraulic system has been opened to facilitate maintenance
or any additional oil has been added to the system.
The resulting symptoms of air in the hydraulic system may be:
• Noisy operation.
• Lack of power or drive after short term operation.
• High operation temperature and excessive expansion of
oil.
Before starting, make sure the transaxles/transmissions are
at the proper oil levels. If it is not, fill to the specifications
outlined in the
Check / Fill Transmission Oil Level
procedure.
Purging Air from the Hydraulic System:
1. Chock the front wheels to prevent the machine from
rolling. Raise the rear of the machine so that the vehicle’s
rear tires do not contact the ground. Position jack stands
under the rear bumper of the machine to secure it.
2. Open the transaxle’s bypass valves (see
Pushing the
Rider by Hand
for the location and function of the bypass
valves), start the engine, release the parking brake, and
slowly move the zero-turn rider’s ground speed control
levers in both forward and reverse directions (5 to 6
times), as air is purged from the unit, the oil level will
drop.
3. Stop the engine and engage the parking brake.
4. Close the transaxle’s bypass valves, start the engine,
release the parking brake, and slowly move the zero-turn
rider’s ground speed control levers in both forward and
reverse directions (5 to 6 times), as air is purged from the
unit, the oil level will drop.
5. Stop the engine. Remove the jack stands from
underneath the machine.
6. Repeat the process detailed above but with the unit's
drive wheels on the ground. The procedure should be
performed in an area free of any objects or bystanders.
It may be necessary to repeat the process detailed above
until all the air is completely purged from the system. When
the transaxles/transmissions operate at normal noise levels
and move smoothly forward and reverse at normal speeds,
then the transaxles/transmissions are considered purged.
Checking Tire Pressures
Tire pressure should be checked periodically, and maintained
at the levels shown in the Specifications chart. Note that
these pressures may differ slightly from the "Max Inflation"
stamped on the side-wall of the tires. The pressures shown
provide proper traction and extend tire life.
Lubrication
Lubricate the unit at the locations shown in Figures 31, 32,
33, and 34 as well as the following lubrication points:
Grease:
• Deck lift lever pivot block.
• Deck lift pivot blocks.
• Front caster wheel axles and yokes.
• Lower parking brake shaft.
• Mower deck hanger linkages.
• Mower deck spindles.
Use grease fittings when present. Disassemble parts to apply
grease to moving parts when grease fittings are not installed.
Not all greases are compatible. Red grease (p/n 5022285)
is recommended, automotive-type, high-temperature, lithium
grease may be used when this is not available.
