Toro Groundsmaster 7210 Service Manual page 96

Test Procedure (continued)
Hydraulic System: Testing the Hydraulic System
D. A pressure drop of more than 15% indicates a traction circuit leak (e.g., a
leaking transmission check valve, a worn/damaged transmission piston
pump). If charge pressure is good under no load, but the pressure drops
below specification when under a traction load, the transmission piston
pump(s) are probably worn or damaged.
Note: When a pump is worn or damaged, the charge pump cannot keep
up with internal leakage in the traction circuit.
13. Stop the machine and shut off the engine.
14. Release pressure from the hydraulic system; refer to
from the Hydraulic System (page
15. Remove the pressure gauge from the transmission charge-pressure test port.
16. Install the plug into the port and torque the plug to 17.7 to 21.5 N∙m (13
to 15 ft-lb).
4–11).
Page 4–36
Releasing Pressure
Groundsmaster 7210
16222SL Rev C