Greensmaster 3300/3400 Hydraulic SystemPage 5 -- 39
CAUTION
Prevent personal injuryand/or damageto equip-
ment. Read all WARNINGS, CAUTIONS and Pre-
cautions for Hydraulic Testing a t the beginning
of this section.
3. Read Precautions for Hydraulic Testing in this sec-
tion.
4. Makesurethetransmissionisadjustedtotheneutral
position.
5. Attachaheavychaintotherearofthemachineframe
and an immovable object to prevent the machine from
moving during testing.
6. Ifmachinehas3wheeldrive,blockuptherearwheel
offthegroundtoallowflowthroughtherearwheelmotor.
7. Chockfrontwheelbeingtested topreventrotationof
the wheel.
8. Thoroughly clean junction of hydraulic lines and fit-
ting on front wheel motor that is not being tested. Dis-
connect hydraulic lines from front wheel motor that is
not being tested. Cap the disconnected hydraulic lines
and fittings in wheel motor.
9. Thoroughly cleanjunction ofhydraulichoseandup-
perhydraulicfittingonfrontsideofpistonpump(forward
port). Disconnect hose from upper pump fitting.
10.Install hydraulic tester (pressure and flow) in series
between piston pump fitting and disconnected hose to
allow flow from piston pump to tester (same tester con-
nections as Piston (Traction) Pump Flow Test). Make
surethatfittingandhoseconnectionsareproperlytight-
ened.Also,make suretheflow controlvalveon testeris
fully open.
11.Startengine andrunatlow idlespeed.Check forhy-
draulicleakageandcorrectbeforeproceedingwithtest.
CAUTION
Use extreme caution when performing test. The
wheelbeing testedwillbe trying tomove the ma-
chine.
12.Movethrottlesoengineisrunningathighidlespeed.
13.Slowly push traction pedal in forward direction until
1000 PSI (69 bar) is displayed on the tester pressure
gauge. Make sure that wheel motor being tested is not
rotating.
14.Wheel motor internal leakage will be shown on flow
meter in GPM. Flow should be less than 1.5 GPM for
the tested wheel motor.
15.Releasetractionpedaltotheneutralpositionandre-
lease brakes. Rotate wheel being tested and retest.
Testing of wheel motor leakage in three ( 3) different
wheel positions will provide most accurate test results.
16.Release traction and brake pedals. Shut engine off.
Record results of wheel motor leakage test.
17.If specification is not met, the tested wheel motor
needs to be repaired or replaced as necessary.
18.To test second front wheel motor:
A. Reconnecthydrauliclinestountestedfrontwheel
motor.
B. Disconnectandcaphydrauliclinestotestedfront
wheel motor.
C. Complete steps 11 to 17 for the second front
wheel motor.
19.If machine has 3 wheel drive, test rear wheel motor:
A. Both front wheel motors should have hydraulic
lines connected. Block up both front wheels off the
ground. Front wheels need to turn freely when test-
ing rear wheel motor.
B. Attach a heavy chain to the rear of the machine
frame and an immovable object to prevent the ma-
chine from moving during testing.
C. Positionrearwheelonthegroundandchockrear
wheel to prevent it from turning.
CAUTION
Use extreme caution when performing test. The
rear wheel will be trying to move the machine.
D. Completesteps11 to 17to test rear wheel motor
leakage.
20.When testing is completed, disconnect tester from
hydraulic hoseand pumpfitting.Connect hoseto pump
fitting. Make sure that hydraulic connections at wheel
motors are all secure.
Hydraulic
System
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