Checking The Hydraulic-Fluid Level; Changing The Hydraulic Fluid And Filters - Toro Z Master 4000 Serie Bedienungsanleitung

Checking the
Hydraulic-Fluid Level
Service Interval: Before each use or daily
1. Allow the hydraulic fluid to cool down. Check the
oil level when the fluid is cold.
2. Check expansion reservoir and if necessary
add Toro ® HYPR-OIL
FULL COLD line
Figure 65
1. Expansion tank
Changing the Hydraulic
Fluid and Filters
Service Interval: After the first 100 hours—Change
the hydraulic-system filters and
fluid.
Every 400 hours or yearly, whichever comes
first—After the initial change—change the
hydraulic-system filters and fluid when using
Toro ® HYPR-OIL
often under dirty or dusty conditions).
To replace the hydraulic fluid, the filters need to be
removed. Replace both at the same time; refer to
Hydraulic-Fluid Specifications (page 53)
specifications.
Purge any air in the system after you install the new
filters and add fluid. Refer to
System (page 55). Repeat the bleeding process until
the fluid remains at the F
after purging.
™ 500 hydraulic fluid to the
(Figure 65).
2. Engine
™ 500 fluid (change it more
for fluid
Bleeding the Hydraulic
C line in the reservoir
ULL OLD
Important:
Failure to properly perform this
procedure can result in irreparable damage to the
transaxle drive system.
Removing Hydraulic Fluid and
Filters
1. Park the machine on a level surface, disengage
the blade-control switch (PTO), and engage the
parking brake.
2. Shut off the engine, remove the key, and wait
for all moving parts to stop before leaving the
operating position.
3. Allow the engine to cool.
4. Using an extension and 7/16-inch socket,
access the vent plug from the top of the machine
through the holes near the roll-bar mounts
(Figure 66).
Note:
Ensure that you keep track of the vent
plug after removal, as it can be easy to misplace.
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1. Access holes for the vent plugs
5. Carefully clean the area around the filter.
Important:
hydraulic system; otherwise, contamination
may occur.
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
54
Figure 66
Do not allow dirt to enter the
(Figure 67).
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