Harrington Hoists and Cranes HPC 500 End Truck - Manual (Page 27)

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8.0 Troubleshooting
Use Table 8- 1, “Troubleshooting Guide” below to troubleshoot any problems you may encounter with the HPC500
Series End Truck or Crane.
Table 8-1 Troubleshooting Guide
Trouble Cause Remedy
End Trucks do not move
smoothly along the runway
Runway system is out of tolerance
Make sure the span of the runway
system is within the allowable
tolerance of CMAA Spec 74.
Make sure the straightness of each
runway is within the allowable
tolerance of CMAA Spec 74.
Make sure the elevation of each
runway is within the allowable
tolerance of CMAA Spec 74.
Make sure that each runway is at the
same elevation within the allowable
tolerance of CMAA Spec 74.
Span of the crane does not match the
span of the runway system
Adjust to make the spans match.
The crane is not square
Adjust to make the crane square –
see Section 3.3.
Damaged end truck wheel(s) Replace damage wheel(s).
End Trucks’ bumpers do not
contact the runway end stops
simultaneously The crane is not square
Adjust to make the crane square –
see Section 3.3.
The end stops are not located
correctly on the runways. Relocate the end stops on the runway
to their correct locations.