Bleeding The Hydraulic System - Toro Z Master 4000 Serie Bedienungsanleitung

Figure 67
1. Hydraulic-filter housing
8. Remove the O-ring from the filter cover and
discard the O-ring.
9. After the hydraulic fluid drains from the transaxle,
remove the filter from the transaxle housing.
10. Repeat this procedure on the other side of the
machine.
Installing the Hydraulic Fluid and
Filters
1. Install a new filter in the transaxle and a new
O-ring onto the filter cover.
2. Install the filter cover.
3. Torque the filter cover to 22.6 to 33.8 N∙m (200
to 300 in-lb).
4. Remove the cap from the expansion tank and fill
the transaxles with the specified fluid until the
proper fluid capacities are met.
Note:
Filling the transaxles may take more time
than expected.
5. Install the previously removed vent plugs and
torque the plugs to 395 to 904 N∙cm (35 to 80
in-lb).
6. Proceed to

Bleeding the Hydraulic System

(page 55).
Important:
Failure to perform the Bleeding
the Hydraulic System procedure after
changing hydraulic filters and fluid can
result in irreparable damage to the transaxle
drive system.
g334915
2. Cover
Bleeding the Hydraulic
System
1. Raise the rear of machine and support it with
jack stands (or equivalent support) just high
enough to allow the drive wheels to turn freely.
1. Jacking points
2. Start the engine, move the throttle control ahead
to the 1/2 throttle position, and disengage the
parking brake.
A. Move the bypass levers into the pushing the
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.
B. Move the bypass levers into the operating
the machine position.
C. With the bypass valve closed and the
engine running, slowly move the control
lever in both forward and reverse directions
5 to 6 times.
D. Shut off the engine and check the fluid
level in the expansion reservoir. Add the
specified fluid until it reaches the F
line on the expansion reservoir.
3. Repeat step 2
purged from the system.
Note:
When the transaxle operates at normal
noise levels, moves smoothly forward, and
reverses at normal speeds, it is purged.
4. Check the fluid level in the expansion reservoir
a final time. Add the specified fluid as until it
reaches the F
reservoir.
55
Figure 68
until all the air is completely
C line on the expansion
ULL OLD
g017625
C
ULL OLD