LUBRICATION
47
Do not fill above
this level
Minimum fill level
4. Prefill the oil filter with new oil and install the
new filter by hand. turn ¾ to one full turn
after the filter gasket contacts the filter base
surface.
5. Fill reservoir with
synthetic 15W 50
oil to
the level of the lower hole in the fill tube. DO
nOt fill above the level of the upper hole.
After purging, check levels and add oil if
necessary.
6. Reinstall the reservoir cap by hand. Do not
overtighten.
7. Proceed to the purge procedure.
Transmission Purging Procedures
Due to the effects air has on efficiency in
hydrostatic drive applications, it is critical to purge
the system.
these purge procedures should be implemented
any time a hydrostatic system has been opened to
facilitate maintenance or any additional oil has been
added to the system.
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 oil tank is at the
proper oil level. If not, fill to the specifications
outlined in this section.
the following procedures are best performed
with the vehicle drive wheels off the ground, then
repeated under normal operating conditions.
1. Disengage the brake if activated.
2. With the bypass valve open and the
engine running at fast idle, slowly move the
directional control in both forward and reverse
directions (5 or 6 times). As air is purged from
the unit, the oil level will drop.
3. With the bypass valve closed and the engine
running, slowly move the directional control
in both forward and reverse directions (5 to
6 times). Check the oil level and add oil as
required after stopping the engine.
4. It may be necessary to repeat Steps 2 and 3
until all the air is completely purged from the
system. When the hydraulic drive operates
at normal noise levels and moves smoothly
forward and reverse at normal speeds, the
hydraulic drive is considered purged.
5. After the vehicle has been used two times,
the oil level should be checked while the oil is
cold and adjusted accordingly.
Summary of Contents for PZ 29
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