Update for coal tipple repair:
After reading and testing the above comments, here are the results. The Tipple works fine electrically. We removed the car carriage from the base and the motor and switches work as they should with jumper wires installed to complete the circuit for the micro switches under the coal car trucks. The gear box was disassembled, inspected, reassembled and tested and it is fine. With the car carriage reinstalled on the base with out the material funnel installed, from the motor side of the tipple, we activated the tipple and the right side of the car carriage seems to rotate in the dumping motion approximately 1/2 "and the left side only 1/4". When activated a second time, the carriage returns to the home position and the timing marks realign as they should. We disassembled the machine and with machined v blocks, gage blocks, and a height gage, tested the motor drive shaft and car carriage for a twisted issue. Items are in perfect alignment.
I am wondering if the car carriage track bearings ( U shaped pieces with steel ball bearings enbeded into the plastic which hold the carriage to the base ) need some sort of lubrication to prevent the carriage from binding? I am also wondering if the car clamps might be binding causing the issue?
Suggestions for lube and and any other ideas are welcome. We are stumped.
