Hydraulic System Maintenance; Checking The Hydraulic Oil Level; Changing The Hydraulic System Filter And Oil - Toro 74824 Operator's Manual

Hydraulic System
Maintenance
Oil Type: 20w-50 engine oil.
Important: Use oil specified or equivalent. Other
fluids could cause system damage.
Checking the Hydraulic Oil
Level
Service Interval: Every 25 hours
Check expansion reservoir and if necessary add 20W-50
engine oil to the FULL COLD line
3
Figure 49
1. Expansion reservoir
2. Full Cold line
Changing the Hydraulic
System Filter and Oil
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.
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.
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.
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3. Engine
2. Locate the filter and guards on each transaxle drive
system (Figure 50). Remove three screws securing
the filter guard and guard.
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3
Right side shown
1. Transaxle drive
2. Oil filter
3. Filter guard
3. Carefully clean area around filters. It is important
that no dirt or contamination enter hydraulic system.
4. Locate and remove the vent plug on each
transmission
5. Place a container below the filter to catch the oil that
drains when the filter is removed. Unscrew the filter
to remove and allow oil to drain from drive system.
Repeat this procedure for both filters.
Installing the Hydraulic System Filters
Service Interval: After the first 50 hours
Every 400 hours
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4
Figure 50
4. Screws
5. Vent plug
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2