Toro Z Master 4000 Series Operator's Manual page 62

Figure 82
1. Access holes for the vent plugs
•
For ZT 5400 Hydros, use a 7/16-inch wrench
to access the vent plug from underneath the
machine (Figure
Figure 83
1. Vent plug
5. Carefully clean the area around the filter.
Important:
Do not allow dirt to enter the
hydraulic system; otherwise, contamination
may occur.
83).
6. Place a drain pan below the filter to catch the
fluid that drains when the filter and vent plugs
are removed.
7. Remove the hydraulic-fluid filter cover from the
transaxle to drain the fluid
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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 as follows:
•
ZT 4400 Hydros: 22.6 to 33.8 N∙m (200 to
300 in-lb)
•
ZT 5400 Hydros: 54.3 to 65.5 N∙m (480 to
580 in-lb)
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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
(page 63).
62
(Figure
Figure 84
2. Cover
Bleeding the Hydraulic System
84).
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