Hydraulic System - Scag Power Equipment Liberty Z SZL36-18FR Operator's Manual

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7.3 HYDRAULIC SYSTEM

A. CHECKING HYDRAULIC OIL LEVEL
The hydraulic oil level should be checked after the first 10
hours of operation. Thereafter, check the oil after every
200 hours of machine operation or monthly, whichever
occurs first.
- IMPORTANT -
If the oil level is consistently low, check for leaks
and correct immediately.
1. Wipe dirt and contaminants from around the
reservoir cap. Remove the cap from the hydraulic oil
reservoir.
2. When the machine is "cold" (before operation),
visually check the level of the hydraulic system oil.
Hydraulic system oil level should be up to the FULL
COLD line on the reservoir. See Figure 7-1. DO NOT
overfill; (overfilling the oil reservoir may cause oil
seepage).
3. Clean the fill cap and install it onto the reservoir.
Figure 7-1. Hydraulic System Oil Level
FULL COLD LINE
- FILL TO HERE
30
B. CHANGING HYDRAULIC OIL
The hydraulic system oil should be changed after the first
120 hours of machine operation and every 400 hours or
annually thereafter, whichever occurs first. The oil should
also be changed if the color of the fluid has become black
or milky. A black color and/or a rancid odor usually indicates
possible overheating of the oil, and a milky color usually
indicates water in the hydraulic oil.
- IMPORTANT -
The hydraulic system oil should be changed if you
notice the presence of water or a rancid odor to
the hydraulic oil.
1. Park the mower on a level surface and stop the
engine.
2. Remove the three 1/4" filter guard screws and filter
guard from both axles. See Figure 7-2. Clean any
loose debris around the perimeter of the filter.
REMOVE SCREWS AND
OIL FILTER GAURD
Figure 7-2. Hydraulic Oil Filter and Drain Plug
3. Place a suitable container under the hydraulic oil
filters. Remove the cover from the left side tank to
gain access to the hydraulic expansion reservoir.
Remove the fill cap from the reservoir.
4. Remove the hydraulic filters from both axles and
allow the fluid to drain into the container. Properly
discard the oil when the system has drained
completely. See Figure 7-2.
Section 7
REMOVE OIL
FILTER