Hydraulic Rotator Cycle Time - Check
- Start the host machine and run the host machine at high idle. Operate the implements until the hydraulic oil reaches normal operating temperature.
- Move the host machine and the work tool to a smooth level location.
- Raise the work tool and position the work tool in a perpendicular position. Refer to Illustration 1.
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| Illustration 1 | g02203133 |
- Rotate the work tool to the left for 1 minute. Record the number of rotations that are completed in that time.
- Rotate the work tool to the right for 1 minute. Record the number of rotations that are completed in that time.
- If the rpm is not within the specification, check the oil flow and the oil pressure of the host machine. Refer to the Service Manual, "Host Machine Pressure and Flow - Test". Refer to Table 1.
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Table 1 Model Oil Flow Speed VHS-60/4 (L1P)
70 L/min (18.49 US gpm)15.25 rpm VHS-70/4 (M1C)
80 L/min (21.13 US gpm)14 rpm
- If an adjustment was made to the host machine, repeat the check.
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