Download caution - Toro Media

6. Chock front wheel being tested to prevent rotation of
the wheel.
7. Thoroughly clean junction of hydraulic lines and fittings at the front wheel motor that is not being tested.
Disconnect hydraulic lines from front wheel motor that
is not being tested. Cap the disconnected hydraulic
lines and plug ports in wheel motor.
8. Thoroughly clean junction of hydraulic hose and hydraulic tube that connects to the upper hydraulic fitting
on the front side of the piston pump (Fig. 20). Disconnect
hose from the tube.
9. Install tester with pressure gauge and flow meter in
series with the pump and the disconnected hose (same
tester connections as Piston (Traction) Pump Flow
Test). Make sure the tester flow control valve is fully
open.
17.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 to allow flow through the rear wheel motors.
B. Attach a heavy chain to the rear of the machine
frame and an immovable object to prevent the machine from moving during testing.
C. Position rear wheel on the ground and chock rear
wheel to prevent it from turning.
CAUTION
Use extreme caution when performing test. The
rear wheel will be trying to move the machine.
CAUTION
Use extreme caution when performing test. The
wheel being tested will be trying to move the machine.
18.When testing is complete, disconnect tester from hydraulic tube and hose. Reconnect hose to hydraulic
tube. Reconnect hydraulic lines to rear wheel motor.
10.Start engine and move throttle to high idle speed
(2850 + 50 RPM).
4
1
11. Slowly push traction pedal in forward direction until
1000 PSI (69 bar) is displayed on the tester pressure
gauge. Make sure that wheel does not rotate during test.
12.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.
13.Release traction pedal, rotate wheel being tested
and retest. Testing of wheel motor leakage in three (3)
different wheel positions will provide most accurate test
results.
FRONT
2
14.Release traction pedal and shut engine off. Record
results of flow test.
15.If specification is not met, the tested wheel motor
needs to be repaired or replaced as necessary.
3
Figure 20
1. Piston pump
2. Upper fitting
3. Hydraulic tube
4. Hydraulic hose
16.Test second front wheel motor. Reconnect hydraulic
lines to untested front wheel motor. Disconnect and cap
hydraulic lines to previously tested front wheel motor.
Complete steps 10 to 15 for the second front wheel motor.
Greensmaster 3150
Page 4 -- 31
Hydraulic System
Hydraulic
System
D. Complete steps 10 to 15 for rear wheel motor
testing.