Toro Groundmaster 31900, Руководство по обслуживанию, Страница: 135 / 355

Test Procedure (continued)
4. Clean and disconnect the hydraulic hose fitting at the elbow fitting near the
barrel end (front) of the lift cylinder being tested.
5. Cap the disconnected fitting with a hydraulic ORFS cap, and plug the
disconnected hose with a hydraulic ORFS plug.
6. Remove the block or jack stand supporting the cutting unit, then lower and
remove the jack.
7. Sit in the operator’s seat and set the key switch to the O
N
position. Press
and hold the lift/lower switch in the L
OWER
position.
8. The capped lift cylinder should be able to support the cutting unit for a short
period (long enough for the machine to move from one area of the work site
to another during operation).
9. Release the lift/lower switch and set the key switch to the O
FF
position.
10. If the lift cylinder allows the cutting unit to lower too quickly, replace or repair
the lift cylinder; refer to Lift Cylinder (page 5–102) or Lift Cylinder Service
(page 5–104) .
11. Use a jack to raise the cutting unit and lift arms slightly. Support the cutting
unit with blocks or jack stands to prevent it from lowering. This removes the
load from the lift cylinders and relieves the lift cylinder hydraulic pressure.
12. Remove the hydraulic ORFS cap and plug and connect the hydraulic hose.
13. Repeat the test for the remaining lift cylinder.
14. After testing:
A. Connect all hydraulic hoses.
B. Lower and secure the operator’s platform and fire wall with the previously
removed fasteners and brackets.
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 operate the lift cylinders. Check for any hydraulic
fluid leaks. Repair hydraulic leaks if necessary before returning the
machine to service.
Groundsmaster ® 3200, 3300 and 3310 Page 5–49 Hydraulic System: Testing the Hydraulic System
19240SL Rev A