Bleeding The Hydraulic System - Toro 74891 Operator's Manual

6. Install the second vent plug and torque it to 20 N•m
(180 in-lb).
7. Continue to add fluid through the expansion reservoir
until it reaches the Full Cold line on the expansion
reservoir.
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 52

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 the drive wheels to turn freely.
1. Jacking points
2. Enter the operator's position, start the engine, move
the throttle control to 1/2 throttle position, and
disengage the parking brake.
A. Move the bypass levers into the pushing the
B. Move the bypass levers into the operating
3/4
C. Shut off the engine and check the fluid level in the
3. Repeat step
from the system.
Note: When the transaxle operates at normal noise
levels and moves smoothly forward and reverse at
normal speeds, then the transaxle is considered purged.
39
1
Figure 53
machine position; refer to
by Hand (page 24). With the bypass valves
open and the engine running, slowly move the
motion-control levers in both forward and reverse
directions (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 fluid as
until it reaches the Full Cold line on the expansion
reservoir.
2 until all of the air is completely purged
G010333
Pushing the Machine