32 snapperpro.com
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 unit from rolling.
Raise the rear of the unit so that the unit's rear tires do
not contact the ground. Position jack stands under the
rear bumper of the unit to secure it.
2. Open the transaxle’s bypass valves (see Pushing the
Unit by Hand for the location and function of the bypass
valves), start the engine, release the parking brake, and
slowly move the unit’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 unit’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 unit.
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 location shown in the following
figures as well as the lubrication points listed below.
Grease:
• front caster wheel axles & yokes
• deck lift pivots blocks
• mower deck spindles
• mower deck pusher bars (72" mower decks)
Use grease fittings when present. Disassemble parts to apply
grease to moving parts when grease fittings are not installed.
Not all greases are compatible. Your product is manufactured
using Heavy Duty Lithium Complex EP, NLGI grade 2 grease
(p/n 5109902X1). It is recommended that you service your
product with similar grease. 5109902X1 is available through
your normal part source. Using non-compatible grease could
damage or cause premature parts failures.
Oil:
• control handle pivots
• seat plate pivots
• deck lift pivots
• parking brake shaft pivots
• discharge chute hinge
• mower deck puller bar pivots (61" mower decks)
Generally, all moving metal parts should be oiled where
contact is made with other parts. Keep oil and grease off belts
and pulleys. Remember to wipe fittings and surfaces clean
both before and after lubrication.
61" Mower Decks:
To Next Page
Loading...
