HUSTLER FasTrak SDX, Общее руководство по обслуживанию, Страница: 19 / 45

121878 4-7 REV C
13. Re-install the expansion tank cap by hand. Be careful
not to overtighten.
14. Proceed to the purge procedure.
IMPORTANT: Purging procedures must be followed after
changing the oil and filter. Refer to Purging Procedure section
for detailed information.
IMPORTANT: When washing the mower, direct the spray
away (especially if using a power washer) from the transaxle’s
seals to prevent water intrusion and to ensure component
performance.
Purging Procedure
Due to the effects air has on efficiency in hydrostatic drive
applications, it is critical that air is purged from the system.
Air creates inefficiency because its compression and
expansion rate is higher than that of the oil approved for use
in hydrostatic drive systems.
These purge procedures should be implemented any time a
hydrostatic system has been opened to facilitate
maintenance or the oil has been changed.
The resulting symptoms in hydrostatic systems 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 transaxle is at the proper oil
level. If it is not, fill to the specifications outlined in this
manual.
The following procedures are best performed with the
vehicle drive wheels off the ground and then repeated under
normal operating conditions. If this is not possible, then the
procedure should be performed in an open area free of any
objects or bystanders.
1. Raise the rear of the mower and block with certified
jack stands. The rear wheels need to be able to rotate
freely and clear of all obstructions.
2. Chock the front tires.
3. Unbolt the seat platform from the mower frame.
• Disconnect the mower harness from the seat
switch.
• Bypass the seat switch by connecting the two
mower harness female spade connectors
together. Figure 4-14
• Re-attach the seat platform to the mower frame.
A. Top port plug
Figure 4-13
A
Never work under the machine or attachment
unless it is safely supported with jack stands.
• Make certain machine is secure when it is
raised and placed on the jack stands.
• Use only certified jack stands. Use only
appropriate jack stands, with a minimum
weight rating of 2000 pounds (907 kg) to
block the unit up.
• Use in pairs only.
• Follow the instructions supplied with the
jack stands.
• The jack stands should not allow the
machine to move when the engine is running
and the drive wheels are rotating.
• Do not allow the wheels to come in contact
with the floor or any object that would permit
the unit to propel itself.
• To prevent injury stay clear and exercise
caution when rotating the wheels.
Exercise extreme caution when the transmissions
are engaged.
• Keep hands, hair, clothing, etc., clear of the
cooling fans on top of the transmissions to
prevent entanglement.
Untrained maintenance personnel should never
attempt to make any adjustments or repairs to the
mower’s drive system while the engine is running.
The following procedures should be performed by
trained maintenance personnel only.
WARNING
WARNING
WARNING