Hydraulic System
Maintenance
Hydraulic System Fluid Specification
Oil Type:
Toro HYPR-OIL® 500 or 20W-50 motor oil.
System Capacity: approximately
4.5 L (152 oz)
with a filter change.
Checking the Hydraulic
Fluid Level
Service Interval:
Every 25 hours
Check the hydraulic fluid level in the expansion
reservoir and if necessary add the specified fluid to
the Full Cold line.
g027985
Figure 43
1.
Expansion reservoir
3.
Engine
2.
Full Cold line
Changing the Hydraulic
System Fluid and Filters
Service Interval:
After the first 50 hours
Every 400 hours
Important:
Repeat the bleeding process until the
fluid remains at the Full Cold line in the reservoir
after purging.
Failure to properly perform this
procedure can result in irreparable damage to the
transaxle drive system.
Note:
Change the filter and fluid at the same time.
Do not
reuse fluid. Once you install the new filter and
add fluid, purge any air in the system.
Removing the Hydraulic System
Filters
1.
Shut off the engine, wait for all moving parts to
stop, and allow engine to cool. Remove the key
and engage the parking brake.
2.
Raise the rear of the machine and support it
with jack stands (or equivalent support) just high
enough to allow drive wheels to turn freely.
g027986
Figure 44
1.
Jacking points
3.
Locate the filter and filter guards on each
transaxle drive system (
). Remove the
3 screws securing the filter guard and guard.
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