Greensmaster 3250--D Hydraulic SystemPage 4 -- 4 7
Procedure for Reel Motor Case Drain Flow
Test
1. Make sure hydraulic oil is at normal operating tem-
peraturebyoperatingthemachineforapproximatelyten
(10) minut es. Make sure the hydraulic tank is full.
2. Parkmachineonalevelsurfacewiththecuttingunits
lowered. Make sure engine is off and the parking brake
is engaged.
CAUTION
Before continuing further, read and become fa-
miliar with Precautions for Hydraulic Testing.
3. For the suspected faulty cutting reel motor, discon-
nect return hose from motor. The return hose is con-
nected to the rear fitting on the reel motor.
4. Install tester with pressure gauge and flow meter in
series with the reel motor and the disconnected return
hose. Make sure the flow control valve on the tester
is fully open.
5. Makesurethatreelspeedissettohighestspeedset-
ting (fully open) and that backlap knob on the hydraulic
manifold is in the mow position.
6. Disconnect hose from case drain of the motor to be
tested at the bulkhead fitting.
A. Plug the bulkhead port.
B. Leave the case drain hose from the motor open
and place open end of disconnected hose into a
drain pan.
7. One person should sit on the seat and operate the
machine while a second person measures case drain
leakage. Make sure functional control lever is in NEU-
TRAL. Start engine and move the throttle to high idle
speed (2710 +
50 RPM).
CAUTION
Keep away from reels during test to prevent per-
sonal injury from the rotating reel blades.
8. Move the functional control lever to MOW position
and then engage reels with joystick. While watching
pressure gauge, slowly close flow control valve on the
tester until a pressure of 1000 PSI (69 bar) is obtained.
9. After achieving 1000PSI(69bar), place discon-
nected motor case drain hose into a container gra-
duatedinouncesormilliliters(e.g.Toro#TOR4077)and
collecthydraulicfluid for fifteen (15) seconds. After fif-
teen (15) seconds, remove hose end from container.
10.Disengagecuttingunits,opencontrolvalveontester
andthenstoptheengine.
11.Identify amount of oil collected in the container. Re-
cord test results.
12.If flow was greater than 16.0 ounces (473 millili-
ters) (0.5 GPM/1.9 LPM), repair or replace the reel mo-
tor as necessary.
13.When testing is complete, disconnect tester from
cutting reel motor and return hose. Reconnect hose to
the motor.
14.Remove plug from bulkhead fitting. Reconnect case
drain hose to the bulkhead fitting.
15.Test other cutting reel motors as needed.
Figure 27
Hydraulic
System
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