Toro Groundmaster 31900, Service Manual, Page: 128 / 355

Test Procedure (continued)
g299958
Figure 39
(steering cover raised)
1. Steering control valve 2. Hydraulic tube – P port
7. Remove the hydraulic tube and use 2 hydraulic hoses to install the tester to
the exposed fittings. Make sure the tester is installed in the correct flow
direction (toward the steering control valve) and the tester flow control valve
is fully open.
8. Start the engine and run it at low-idle speed. Correct any hydraulic fluid leaks
at the test connections before continuing the test.
9. Start the engine and move the throttle to the full speed:
• Model 31900 and 31901 = 3235 rpm
• Model 31902 and 31903 = 3150 rpm
• Model 31907 and 31909 = 3235 rpm
10. Make sure hydraulic fluid is at normal operating temperature by operating the
machine for approximately 10 minutes.
11. Use the TDM display/controller screen to verify the engine speed.
12. Verify the pump flow at No Load as follows:
A. Unrestricted pump output should be approximately:
• Model 31900 and 31901 = 17 L/minute (4.5 gallons/minute)
• Model 31902 and 31903 = 16 L/minute (4.2 gallons/minute)
• Model 31907 and 31909 = 17 L/minute (4.5 gallons/minute)
B. Record the tester pressure and flow readings at no load.
13. Verify the pump flow at Under Load as follows:
Hydraulic System: Testing the Hydraulic System Page 5–42 Groundsmaster ® 3200, 3300 and 3310
19240SL Rev A