The earlier variants of autoballaster with a TOPS prefix of GERS (Ithink) actually had screw couplings. The later versions have buck eye couplings. Even so it does make you wonder how a set of 5 could go out with no generator. I can only assume that must have working with another set of 5 with a gen on a previous job when they could have shared the gen.
As I recall, it is the side tippers that are bolted together.
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