Procedure for Wheel Motor Efficiency Test:
Over a period of time, a wheel motor can wear
12. Slowly push traction pedal in forward direction until
PSI (69 bar) is displayed on the tester pressure
gauge.
1000
Note:
internally.Awornmotormayby--passoiltoitscasedrain
causing the motor to be less efficient. Eventually,
enough oil loss will cause the wheel motor to stall under
heavyloadconditions.Continuedoperationwithaworn,
inefficient motor can generate excessive heat, cause
damage to seals and other components in the hydraulic
system, and affect overall machine performance.
13. 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.
14.
Release traction pedal, rotate wheel being tested,
and retest. Testing of wheel motor leakage in three dif-
ferentwheelpositions willprovide mostaccurate testre-
sults.
1.
Make sure hydraulic oil is at normal operating tem-
perature by operating the machine for approximately 10
minutes. Make sure the hydraulic tank is full.
15.
results of flow test.
Release traction pedal and shut engine off. Record
2.
units lowered and off. Make sure engine is off and the
parking brake is engaged.
Park machine on a level surface with the cutting
16.
needs to be repaired or replaced as necessary.
If specification is not met, the tested wheel motor
17.
Testsecondfrontwheelmotor.Reconnecthydraulic
3.
Read Precautions for Hydraulic Testing.
lines to untested front wheel motor. Disconnect and cap
hydraulic lines to tested front wheel motor. Complete
steps 11 to 16 for the second front wheel motor.
4.
tral position (see the Traction Unit Operator’s Manual).
Make sure the transmission is adjusted to the neu-
5.
frame and an immovable object to prevent the machine
from moving during testing.
Attach a heavy chain to the rear of the machine
18. 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. Release parking brake so front wheels can
turn freely.
6.
wheelofftheground toallowflowthroughtherearwheel
motor.
If machine has 3 wheel drive, block up the rear
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.
7.
of the wheel. Make sure parking brake is on.
Chock front wheel being tested to prevent rotation
8.
that is not being tested. Cap the disconnected hydraulic
Disconnect hydraulic lines from front wheel motor
C. Position rear wheel on the ground and chock
rear wheel to prevent it from turning.
lines and plug ports in wheel motor (see Special Tools).
9.
that connects to the upper hydraulic fitting on the front
side of the hydrostat.
Disconnect hydraulic hose from the hydraulic tube
CAUTION
Use extreme caution when performing test. The
rear wheel will be trying to move the machine.
10.
Install flow tester in series with the pump and the
disconnected hose (same tester connections as Trac-
tion Drive Hydrostat (P3) Flow Test). Make sure the
tester flow control valve is fully open.
D. Complete steps 11 to 16.
19.
Disconnecttesterfromhydraulictubeandhose.Re-
connect hose to tube.
CAUTION
Use extreme caution when performing test. The
wheel being tested will be trying to move the ma-
chine.
11.
50
Start engine and move throttle to full speed (2850 +
RPM).
Greensmaster 3150
Page 4 -- 33
Hydraulic System (Rev. E)
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
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| Tags | Toro Greensmaster 3150 |
| Download File |
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| Document Type | Service Manual |
| Language | English |
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| Publisher | toro.com |
| Wikipedia's Page | Toro Company |
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