Toro Groundsmaster 7210 Service Manual page 105

Test Procedure (continued)
Groundsmaster 7210
16222SL Rev C
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.
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
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
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
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
the parking brake sensor is correct before returning the machine to regular
operation.
IMPORTANT
CAUTION
EUTRAL
4–11).
5–33). Ensure that the operation of
Page 4–45 Hydraulic System: Testing the Hydraulic System
position. Shut off the engine
Releasing Pressure
7 to 17 for the