Toro Greensmaster 3120 Service Manual page 98

Cutting Unit Circuit Testing – Cutting Unit Motor Efficiency/Case
Drain Test (continued)
Hydraulic System: Testing the Hydraulic System
11. Move the function control lever to the M
and slowly close tester flow control valve until a pressure of 13789 kPa (2000
PSI) is obtained.
12. Hold disconnected motor case drain hose into a container graduated in
ounces or milliliters (e.g. Toro #TOR4077) and collect hydraulic fluid for 15
seconds. After 15 seconds, remove hose end from container.
13. Disengage the cutting units, Open the tester flow control, set throttle to low
speed and stop engine.
14. Record amount of fluid collected in the container.
15. If volume is more than 579 ml (19.5 oz), repair or replace the cutting unit
motor.
16. Remove tester and reconnect hydraulic hoses.
17. Check hydraulic fluid level (see Traction Unit Operator's Manual).
18. Repeat test with remaining cutting unit motors as needed.
19. If specifications are met and cutting unit performance is still in question, test
solenoid valve (S1R1) relief or relief valve (R1) as described in
Circuit Testing – Relief Valve Test (page
20. Check fluid level in hydraulic tank and adjust as necessary; refer to traction
unit Operator's Manual.
OW
4–53).
Page 4–52
position, engage the cutting units
Cutting Unit
Greensmaster 3120
17230SL Rev C