Bleeding The Hydraulic System - Toro 74141 Operator's Manual

3. Repeat for the other filter.
4. Install the filter guards over each filter as previously
removed.
5. Use the 3 screws to secure the filter guards.
6. Verify that the vent plugs are removed before adding
the oil.
7. Slowly pour the specified oil through the expansion
reservoir until oil comes out of one of the vent-plug
holes.
8. Stop and install that vent plug.
9. Torque the plug to 20 N-m (15 ft-lb).
10. Continue to add oil through the expansion reservoir
until oil comes out of the remaining vent-plug hole on
the second transmission.
11. Stop and install that vent plug.
12. Torque the plug to 20 N-m (15 ft-lb).
13. Continue to add oil through the expansion reservoir
until it reaches the FULL COLD line on the expansion
reservoir.
14. Proceed to Bleeding the Hydraulic System (page
Important: Failure to perform the Bleeding
the Hydraulic System procedure after changing
hydraulic filters and oil can result in irreparable
damage to the transaxle drive system.
A B
C D
F
E
g027477
Figure 70

Bleeding the Hydraulic System

1. Raise the rear of machine up, and support it with jack
stands (or equivalent support) just high enough to
allow drive wheels to turn freely.
1. Jacking points
49).
2. Enter the operator's position, start the engine, move
the throttle control ahead to the 1/2 throttle position,
and disengage parking brake.
A. Move the bypass levers into the pushing the
B. Move the bypass levers into the operating
C. Stop the engine and check the oil level in the
3. Repeat step
the system.
Note: When the transaxle operates at normal noise
levels, moves smoothly forward, and reverses at normal
speeds, then the transaxle is considered purged.
4. Check the oil level in the expansion reservoir one last
time. Add the specified oil as until it reaches the FULL
COLD line on the expansion reservoir if necessary.
3/4
49
g017625
Figure 71
machine position. With the bypass valves
open and the engine running, slowly move the
motion-control levers in both forward and reverse
(5 or 6 times).
the machine position. With the bypass valve
closed and the engine running, slowly move the
directional control in both forward and reverse
directions (5 to 6 times).
expansion reservoir. Add the specified oil as until
it reaches the FULL COLD line on the expansion
reservoir.
2 until all the air is completely purged from
1