Toro Groundmaster 31900, Service Manual

Page: 120 / 355

Test Procedure – Front Wheel Motor (continued)
10. Slowly press the traction pedal in the forward direction until 6,900 kPa (1,000
psi) is displayed on the tester pressure gauge. Ensure that the front wheel
is not rotating and record the flow meter reading.
11. Release the traction pedal, shut off the engine, rotate the front wheel being
tested 90° Test again and record the flow meter reading.
12. Release the traction pedal, shut off the engine, rotate the front wheel being
tested 180° Test again and record the flow meter reading.
13. Use the average of the 3 flow meter readings to judge the front wheel
motor performance. Testing of wheel motor leakage in the 3 different wheel
positions will provide the most accurate test results. The flow through a
stationary front wheel motor should be:
• Model 31900 and 31901 = less than 4 L/minute (1 gallons/minute)
• Model 31902, 31903, 31907 and 31909 = less than 3.4 L/minute (0.9
gallons/minute)
14. If specifications are not met, replace or repair the worn wheel motor; refer to
Wheel Motors (page 5–82) or Wheel Motor Service (page 5–86) .
15. After testing:
A. Remove the hydraulic hoses and tester.
B. Remove all caps and plugs and connect all hydraulic lines and hoses.
C. Check and adjust the level of the hydraulic fluid in the hydraulic reservoir;
refer to the traction unit Operator’s Manual .
D. Start the engine and check for any hydraulic fluid leaks. Repair hydraulic
leaks if necessary before returning the machine to service.
Test Procedure – Rear Wheel Motor
To accurately test a rear wheel motor, the front wheel motors must be allowed
to rotate.
1. Raise and support both front wheels; refer to Jacking Instructions (page 1–6) .
2. Raise the hood.
3. Clean the bulkhead and hose fittings on each side of the machine.
Hydraulic System: Testing the Hydraulic System Page 5–34 Groundsmaster ® 3200, 3300 and 3310
19240SL Rev A