Change Hydraulic Fluid
Change hydraulic fluid after every 400 operating hours
or yearly,under normal conditions. Iffluid becomes con-
taminated, the complete hydraulic system must be
flushed (see Flush Hydraulic System). Contaminated
fluid looks milky or black when compared to clean oil.
1
1.
ting units, stop the engine, engage the parking brake
and remove key from ignition switch.
Position machine on a level surface, lower the cut-
2.
Thoroughly clean area around the hydraulic suction
2
hose at gear pump (Fig. 37). Disconnect suction hose
and let hydraulic fluid flow into drain pan. Reinstall hose
when hydraulic fluid stops draining.
Figure 37
3.
liters) of hydraulic fluid. Refer to Check Hydraulic Fluid.
Fill hydraulic tank with approximately 6 gallons (22.6
1.
Gear pump
2.
Suction hose from tank
IMPORTANT: Use only hydraulic fluids specified.
Other fluids could cause system damage.
2
4.
draulic controls to distribute hydraulic fluid throughout
the system. Also, check for leaks, then stop the engine.
Installhydraulictankcap.Startengineanduseallhy-
5.
raise level to FULL mark on dipstick. DO NOT OVER
FILL.
Check level ofhydraulic fluid and add enough fluid to
1
Figure 38
1.
Hydraulic tank
2.
Cap
Groundsmaster 3500--D
Page 4 -- 57
Hydraulic System (Rev. D)
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