Toro Groundsmaster 7210, Руководство по обслуживанию

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Test Procedure (continued)
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Figure 52
1. Lift cylinder collar
2. Tape
6. Remove the jack stands from under the cutting deck (or implement).
Note: The cutting deck (or implement) should settle slightly and then be
supported by the capped lift cylinder.
7. Place a piece of tape on the lift cylinder rod near the rod end ( Figure 52 ).
Measure and record the distance from the lift cylinder collar to the tape
location.
8. Keep the machine parked for 4 hours and monitor the lift cylinder. The weight
of the cutting deck (or implement) can cause the lift cylinder to gradually
retract. Use the change in distance from the lift cylinder collar to the location
of the tape to determine the lift cylinder rod movement.
A. If the cutting deck (or implement) is still suspended after 4 hours and
lift cylinder rod movement is less than 6.4 mm (1/4 inch), consider that
the lift cylinder is in good condition.
Note: A lift cylinder in good, usable condition will show minimal rod
movement.
B. If the rod movement is more than 6.4 mm (1/4 inch) after 4 hours,
indicates a lift cylinder with internal seal damage or excessive internal
wear. Replace or repair the lift cylinder; refer to
Lift Cylinder (page 4–124)
and Servicing the Lift Cylinder (page 4–126) .
9. Once the lift cylinder condition is determined, use a jack to raise both sides
of the cutting deck (or implement) slightly which removes the load from the
lift cylinder.
10. Support both sides of the cutting deck (or implement) with jack stands.
11. Remove the cap from the cylinder fitting and the plug from the hydraulic hose.
12. Connect the hydraulic hose to the lift cylinder fitting.
13. Remove the tape from the lift cylinder rod.
14. Remove the jack stands from the cutting deck (or implement).
15. Start the engine and operate the lift cylinder through several raise and lower
cycles. Shut off the engine and check for any leakage.
16. Check the hydraulic-fluid level in the hydraulic reservoir.
Hydraulic System: Testing the Hydraulic System Page 4–56 Groundsmaster 7210
16222SL Rev C