Toro 74840 Operator's Manual page 42

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. Locate the filter and guards on each transaxle drive
system (Figure 50). Remove three screws securing
the filter guard and guard.
5
3
4
Figure 50
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. Place a container below the filter to catch the oil that
drains when the filter and vent plugs are removed.
5. Locate and remove the vent plug on each
transmission
6. 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
G010254
1
2
4. Screws
5. Vent plug
1
3
5
1. Apply a thin coat of oil on the surface of the rubber
seal of each filter.
2. Turn the filter clockwise until rubber seal contacts
the filter adapter then tighten the filter an additional
3/4 to 1 full turn. Repeat for the other filter
3. Install the filter guards over each filter as previously
removed. Use the three screws to secure the filter
guards.
4. Verify the vent plugs are removed before adding the
oil.
5. Slowly pour the specified oil through expansion
reservoir until oil comes out of one of the vent plug
holes. Stop and install that vent plug. Torque the
plug to 180 in-lb (20.3 N-m).
6. Continue to add oil through the expansion reservoir
until oil comes out of the remaining vent plug hole
on the second transmission. Stop and install that
vent plug. Torque the plug to 180 in-lb (20.3 N-m).
7. Continue to add oil through the expansion reservoir
until it reaches the FULL COLD line on the
expansion reservoir. Proceed to the Bleeding the
Hydraulic System section.
Important: Failure to perform the Bleeding
the Hydraulic System procedure after changing
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2
4
6
3/4
Figure 51
G008748