Greensmaster 3150 Hydraulic SystemPage 4 -- 45
Procedure for Reel Motor Case Drain Flow
Test:
1. Make sure hydraulic oil is at normal operating tem-
peraturebyoperatingthemachineforapproximatelyten
(10) minutes. Make sure the hydraulic reservoir is full.
2. Parkmachineonalevelsurfacewiththecuttingunits
lowered. Make sure engine is off.
CAUTION
Before continuing further, read and become fa-
miliar with Precautions for Hydraulic Testing.
3. Forthesuspectedbadcuttingreelmotor,disconnect
returnhosefromthemotor.Thereturnhoseconnectsto
the fitting at the rear of the motor.
4. Installtesterin serieswith thereel motorand thedis-
connected return hose. Make sure the flow c ontrol
valve on the tester is fully open.
5. Make surebacklapknobonthehydraulic manifoldis
in the mow position and reel speed is set to maximum.
6. Disconnect hose from case drain of the motor to be
tested at the bulkhead fitting.
A. Plug the bulkhead port with a steel plug.
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
machinewhileasecondpersonreadsthetesterand
measures case drain leakage.
8. Make sure functional control lever is in NEUTRAL .
Startengineandmovethethrottletohighidlespeed
(2850 +
50 RPM).
CAUTION
Keep away from reels du ring test to prevent per-
sonal injury from the rotating reel blades.
9. Move the functional control lever to the MOW posi-
tion and engage the cutting reels with the joystick con-
trol. While watching pressure gauge, slowly close flow
control valve on the tester until a pressure of 1000 PSI
(69 bar) is obtained.
10.After achieving 1000PSI(69bar), place discon-
nected motor case drain hose into a container gra-
duated in ounces or milliliters (Tool TOR4077: see
SpecialTools)andcollecthydraulicfluidfor15 seconds
(Fig.29).After15seconds,r emovehoseendfromcon-
tainer.
11.Disengage cutting units. Open control valve on test-
er and stop the engine.
12.Measure theamount ofoil collectedin thecontainer.
Record test results.
13.Ifcasedrainflowwasgreaterthan16.0ounces(473
milliliters) (0.5GPM/1.9 LPM) in15 seconds,repairor
replace the reel motor as necessary.
14.When testingof the reelmotor iscompleted, discon-
nect tester from reel motor and return hose. Reconnect
return hose to the motor.
15.Remove plug from bulkhead fitting. Reconnect case
drain hose to the bulkhead fitting.
16.Test o ther cutting reel motors as needed.
Figure 29
Figure 30
Hydraulic
System
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