Hydraulic System
Maintenance
Hydraulic System Oil Specification
Oil Type:
Toro HYPR-OIL® 500 or 20w-50 motor oil.
System Capacity: approximately
4.495 liter (152 oz) with a
filter change.
Checking the Hydraulic Oil
Level
Service Interval:
Every 25 hours
Check expansion reservoir and if necessary add the specified
oil to the FULL COLD line.
g017656
3
2
1
Figure 47
1.
Expansion reservoir
3.
Engine
2.
Full Cold line
Changing the Hydraulic
System Oil and Filters
Service Interval:
After the first 50 hours
Every 400 hours
Important:
The bleeding process is repeated until the
oil 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:
The filter and oil are changed at the same time.
Do
Not
reuse oil. Once the new filter is installed and oil is added
any air in the system must be purged.
Removing Hydraulic System Filters
1.
Stop 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 machine up and support with jack
stands (or equivalent support) just high enough to
allow drive wheels to turn freely.
g017658
1
Figure 48
1.
Jacking points
3.
Remove the nuts holding the transaxle support in place
(Figure 49).
g017660
1 2 3
2 1
Figure 49
1.
Nut (5/16 inch) (27 to 33
ft-lb)
3.
Transaxle support
2.
Nut (3/8 inch) (15 to 19
ft-lb)
36
Summary of Contents for 74395
Page 10: ...119 8874 1 Low speed 2 High speed 10 ...
Page 50: ...Schematics g017655 Electrical Diagram Rev A 50 ...
Page 51: ...Notes 51 ...