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Hydra Mac 8A (Gehl 2500) restoration... or "Oh No... What have I done?"
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<blockquote data-quote="vinito" data-source="post: 97152" data-attributes="member: 12954"><p>Yea the engraver is a pretty cool toy. It's cheap quality and there are wrinkles, but lots of info about them on the interwebs. I did a fair bit of research before pulling the trigger and I keep learning about more options and such. If you want some conversation about it I could offer what I know, but it should be private or at least on a different heading. I'm really new and green to it but I can probably give you a couple stories anyway.</p><p>I returned attention to the skidsteer yesterday. Today I've got both gear boxes (final drives?) rebuilt with new bearings & rubber. I had to machine two new seal rings (steel collar which slides over the shaft and the lip seal is in contact with) and adapted them to accept a little internal o-ring to help insure no leaking. Other than that and cutting new rubber gaskets for the lids, it was just replacing with bought bearings, seals & o-rings... and a lot of cleaning. I'm glad I rebuilt them as they were still gucky inside and they would both certainly have leaked which would have sucked. Also, the bearings on one of the shafts was in pretty bad shape so I'm glad to replace all of them.</p><p>And finally got the muffler flipped around. The stock muffler on the Harbor Freight V-twin Predator pointed the wrong way for this machine, and probably most others too I would guess. Too bad they don't make it able to be flipped, which would be a fairly trivial design change. I had to clamp the flanges to a plate to hold them in position, cut the pipes and two strap clamps, flip the muffler and weld the pipes back on (with some couple collars I machines), make two new strap clamps and re-paint it with high-heat black. Pain in the a$$ job but it's done now. I can probably leave it as-is and it will certainly function fine, but I might add a tailpipe extension someday.</p><p>Here it is. Looks pretty underwhelming for as much hassle as it was. Kinda looks just like a Predator engine except the muffler points to the right instead of the left. Woop-tee-doo. Glad it's done though.</p><p><a href="http://smg.photobucket.com/user/mikeyphoto/media/muff.jpg.html" target="_blank"><img src="http://img.photobucket.com/albums/v110/mikeyphoto/muff.jpg" alt=" photo muff.jpg" class="fr-fic fr-dii fr-draggable " style="" /></a></p></blockquote><p></p>
[QUOTE="vinito, post: 97152, member: 12954"] Yea the engraver is a pretty cool toy. It's cheap quality and there are wrinkles, but lots of info about them on the interwebs. I did a fair bit of research before pulling the trigger and I keep learning about more options and such. If you want some conversation about it I could offer what I know, but it should be private or at least on a different heading. I'm really new and green to it but I can probably give you a couple stories anyway. I returned attention to the skidsteer yesterday. Today I've got both gear boxes (final drives?) rebuilt with new bearings & rubber. I had to machine two new seal rings (steel collar which slides over the shaft and the lip seal is in contact with) and adapted them to accept a little internal o-ring to help insure no leaking. Other than that and cutting new rubber gaskets for the lids, it was just replacing with bought bearings, seals & o-rings... and a lot of cleaning. I'm glad I rebuilt them as they were still gucky inside and they would both certainly have leaked which would have sucked. Also, the bearings on one of the shafts was in pretty bad shape so I'm glad to replace all of them. And finally got the muffler flipped around. The stock muffler on the Harbor Freight V-twin Predator pointed the wrong way for this machine, and probably most others too I would guess. Too bad they don't make it able to be flipped, which would be a fairly trivial design change. I had to clamp the flanges to a plate to hold them in position, cut the pipes and two strap clamps, flip the muffler and weld the pipes back on (with some couple collars I machines), make two new strap clamps and re-paint it with high-heat black. Pain in the a$$ job but it's done now. I can probably leave it as-is and it will certainly function fine, but I might add a tailpipe extension someday. Here it is. Looks pretty underwhelming for as much hassle as it was. Kinda looks just like a Predator engine except the muffler points to the right instead of the left. Woop-tee-doo. Glad it's done though. [URL='http://smg.photobucket.com/user/mikeyphoto/media/muff.jpg.html'][IMG alt=" photo muff.jpg"]http://img.photobucket.com/albums/v110/mikeyphoto/muff.jpg[/IMG][/URL] [/QUOTE]
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Hydra Mac 8A (Gehl 2500) restoration... or "Oh No... What have I done?"
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