Hydraulic System - Scag Power Equipment CHEETAH II SCZII-61V-31FX Operator's Manual

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7.3 HYDRAULIC SYSTEM

A. CHECKING HYDRAULIC OIL LEVEL
The hydraulic oil level of both expansion tanks 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
hydraulic level indicator window.
2. Visually check the level of hydraulic oil. Hydraulic
oil must be within the center of the wide postion of
the indicator window when the machine is cold. See
Figure 7-2. If the fluid is low, add 20W50 oil (Scag
p/n 486255 - 1 Quart or p/n 486254 - 1 Gallon). DO
NOT overfill; (overfilling the oil reservoir may cause
oil seepage around the cap area).
Figure 7-2. Hydraulic Oil Reservoir
B. CHANGING HYDRAULIC OIL AND FILTER
The hydraulic oil should be changed after the first 100
hours of operation. Thereafter, the hydraulic oil should be
changed every 500 hours or annually, 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.
FULL LEVEL
38
- IMPORTANT -
The hydraulic 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. Position a floor jack under the rear of the machine.
Raise the machine and support it to prevent it
from falling. Block the caster wheels to prevent the
machine from moving.
3. Place a suitable container (capable of holding 6
quarts) under the RH hydraulic axle assembly.
Remove the cover over the hydraulic reservoir
located on the LH fuel tank. Remove the fill cap from
the reservoir and the drain plug from the bottom
of the RH hydraulic axle assembly. See Figure
7-3. Allow the fluid to drain into the container and
properly discard it.
DRAIN PLUG
Figure 7-3. Hydraulic Oil Filter and Drain Plug
4. Re-install the drain plug, torque to 32 to 42 in/lbs
and remove the hydraulic filter assembly from the
RH hydraulic axle.
Section 7
HYDRAULIC
RESERVOIR
HYDRAULIC
FILTER