|Removing Motor Couplings
|Recently I was removing a motor coupling from a motor shaft and a horizontal clutch on a Goss Metroliner. The two pieces were press fit with no setscrews. Standard gear pullers wouldn’t provide enough force to remove the coupling so I tried using a 10-ton Hydraulic Ram (Porta-Power), hollow cylinder and spreader-bar. The 10-ton Hydraulic cylinder couldn’t provide enough force to move the coupling.
Still, when there’s a will, there is a way: I removed a 20-ton hydraulic bottle jack from a small arbor-press. I then placed the jack between the spreader bar and the motor shaft. The only problem that I experienced at that point was that the bottle jack was now on its side instead of its normal upright position which meant that the hydraulic fluid inside the jack moved away from the manual pump preventing the jack from working.
This problem was overcome by rotating the bottle jack into a position that would keep the hydraulic fluid in the area of the manual pump, in other words, handle down. Once I got fluid to the pump I was able to remove the motor coupling.
Replacing micrometric rollers can be a time-consuming chore on Goss Urbanite, Goss Community and Goss Suburban presses, depending on how you decide to disassemble them.
The quickest way to remove the micrometric roller is to remove the roller shaft from the operating side of the press.
First remove the operator side cover. Second, on Goss Suburban and Urbanite units, remove the automatic throw off linkage. Third, loosen the eccentric sleeves on each end of the micrometric roller.
The shaft can now be extracted from the micrometric roller by pulling the shaft out of the operator side of the unit with the brackets still attached to the shaft. It’s almost like removing meat from a skewer. Normally, the rubber transfer roller that is in contact with the micrometric roller can remain in place while the micrometric roller is being removed; in fact, it will help support the micrometric during the removal process.
The transfer roller in most cases, however, will need to be removed whenever it is time to re-install the micrometric roller. Keep in mind that you will need to assign someone the task of supporting the micrometric roller once the transfer roller is removed.
Frank Bourlon has more than 30 years experience in the newspaper industry. He is the executive director for Newspaper Production & Research Center. He can be reached @ 405-524-7774 or via email at firstname.lastname@example.org.
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