Another version of what Doug is describing:Get two Allen keys or bolts or something that fit the pin holes, insert them simultaneously and then use a screwdriver wedged between them to loosen.

5 machine screws with nuts underneath hold it on, removal mentioned above. You mention replace ? Are they damaged or ? If they haven't been cleaned and lubed in a long while I highly recommend removing them for thorough cleaning and greasing. Disassembling on the boat is a little riskier but doable. Also on a bench you can lay out the parts and that helps knowing how to put it all back together, for my old brain anyway. If you decide to do it while on the boat get a shallow box(4-5" high sides) cut a hole in the bottom equal to the size of winch base with the drum removed. Tape the box to the base so no parts can escape and to the coaming for stability. Disassemble and soak the parts & bearings in mineral spirit bath them brush clean with an old stiff toothbrush. Once cleaned use a brush to apply a very light coating of grease to all the moving parts(I use Super Lube with Teflon in a tube) and for the pawls use machine oil only. Reassemble and feel the smooth precisionI need to remove, repair or replace my Barient 27 two speed self tailing winch.
Thank you for the detailed information! Apologies for the late reply. The winch sounds dry and 'clangs a bit' when in use so I am planning to rebuild and lube. The winch seized when the self tailing top portion got bent and obstructed the drum turning. What happened was that I used the starboard winch for winching an line connected to the anchor chain, as a windlass jig. The boat does not have a windlass, so two hooks on a line, to be hooked on the anchor chain, reeled in, then hooked further up, with other end the line on a winch for mechanical advantage. My crewmate, who apparently was not winch savvy, was winching in while I was a the bow clipping the chain. My lack of detailed instruction to her, resulted in her continuing winching hard and crosswrapping the rope tightly, instead of allowing the line to exit the winch. This resulting in bending the top of the self tailing portion of the winch and seized it and it would not turn. I determined the top of the self tailing bar had been bent. I unbent it back to approximate original position with a rubber hammer and now it spins free. I was concerned it may be compromised and need replacement, but so far no problem. Unexpected series of unfortunate events!5 machine screws with nuts underneath hold it on, removal mentioned above. You mention replace ? Are they damaged or ? If they haven't been cleaned and lubed in a long while I highly recommend removing them for thorough cleaning and greasing. Disassembling on the boat is a little riskier but doable. Also on a bench you can lay out the parts and that helps knowing how to put it all back together, for my old brain anyway. If you decide to do it while on the boat get a shallow box(4-5" high sides) cut a hole in the bottom equal to the size of winch base with the drum removed. Tape the box to the base so no parts can escape and to the coaming for stability. Disassemble and soak the parts & bearings in mineral spirit bath them brush clean with an old stiff toothbrush. Once cleaned use a brush to apply a very light coating of grease to all the moving parts(I use Super Lube with Teflon in a tube) and for the pawls use machine oil only. Reassemble and feel the smooth precision! If not cleaned/lubed in recent history you will notice a significant operational improvement for your efforts ! Good luck !
Wow, the fact the the self tailer casting bent is baffling to me ? Did the line somehow get wedged between the winch and the arm causing a vertical force on the arm or ?My lack of detailed instruction to her, resulted in her continuing winching hard
Yes, I do think that’s what happened because the line was completely wrapped tightly and continuing to wedge when she continued to winch with the handle. It was very difficult to remove all that line. It was so wedged.Wow, the fact the the self tailer casting bent is baffling to me ? Did the line somehow get wedged between the winch and the arm causing a vertical force on the arm or ?
Thought it had to be something like that. Under "normal" operation I could not fathom how you could bend anything no matter how much force a human could apply.Yes, I do think that’s what happened

