Test Procedure (continued)
IMPORTANT
Do not run the engine at full speed when performing this test using
Toro hydraulic tester (pressure and flow) (TOR214678). The traction
pump output at full engine speed can damage the hydraulic tester.
11. Use a phototac to measure the engine speed, move the throttle so that the
engine speed is
2,800 rpm
(not full speed). Set the parking brake to keep
the wheel from rotating during test.
CAUTION
The rear wheel that you are testing will try to move the machine
forward.
Use extreme caution when performing the test.
12. Sit in the operator seat and slowly push the traction control lever for the
motor to be tested in the forward direction until the tester pressure gauge
displays
6,900 kPa (1,000 psi)
.
13. The wheel motor internal leakage is shown on the tester flow meter in
L/minute (gallons/minute).
14. Return the traction control lever to the N
EUTRAL
position. Shut off the engine
and record the test results. Rotate the wheel and test it again.
Note:
Testing the wheel motor leakage in 3 different wheel positions will
give the most accurate test results.
15. The flow should be less than
5.7 L/minute (1.5 gallons/minute)
for the tested
wheel motor. If the specification is not met, repair or replace the wheel motor.
16. Release pressure from the hydraulic system; refer to
from the Hydraulic System (page 4–11)
.
17. Disconnect the tester from the pump outlet fitting and hydraulic hose, and
connect the hose to the pump fitting.
18. If other wheel motor requires testing, complete the steps
to
for the
other motor.
19. After you complete the test, remove the jumper wire from the parking brake
harness connector. Connect the wire harness to the parking brake sensor;
refer to the
Parking Brake Sensor (page 5–33)
. Ensure that the operation of
the parking brake sensor is correct before returning the machine to regular
operation.
Groundsmaster 7210
Page 4–45
Hydraulic System: Testing the Hydraulic System
16222SL Rev C
Summary of Contents for Groundsmaster 7210
Page 4: ...NOTES Revision History Page 4 Groundsmaster 7210 16222SL Rev C...
Page 32: ...Specifications and Maintenance Special Tools Page 2 16 Groundsmaster 7210 16222SL Rev C...
Page 60: ...Diesel Engine Service and Repairs Page 3 28 Groundsmaster 7210 16222SL Rev C...
Page 196: ...Hydraulic System Service and Repairs Page 4 136 Groundsmaster 7210 16222SL Rev C...
Page 304: ...Chassis Service and Repairs Page 6 42 Groundsmaster 7210 16222SL Rev C...
Page 327: ...Drawing 105 7260 Rev E Sheet 1 16222SL Rev C Page A 3 Hydraulic Schematic g186843...
Page 328: ...Page A 4 16222SL Rev C Drawing 119 4372 Rev C Sheet 1 Electrical Schematic Platform g186842...
Page 329: ...Drawing 119 4377 Rev C Sheet 1 16222SL Rev C Page A 5 Electrical Schematic Engine g186841...
Page 336: ...Page A 12 16222SL Rev C Drawing 119 4386 Rev A Sheet 1 Wire Harness Drawing Cab Power g186851...
Page 342: ......
