Transmission removal - SailNet Community
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post #1 of 21 Old 01-11-2014 Thread Starter
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Transmission removal

I am trying to separate a Paragon 23R transmission from a Perkins 4.270 engine. The best I've been able to do is get the adapter plate about 1/4" away from the bell housing. Yes, I've looked very carefully to ensure that there are no bolts still holding things up. Researching the parts manuals and transmission installation guide it seems that the transmission should just slide in and out.

The only thing that I can figure is that the splines are corroded and or seized to the damper plate. Prior to getting more aggressive than I already have I thought I'd ask here to see if anyone else has any suggestions.

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Mike

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post #2 of 21 Old 01-11-2014
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Re: Transmission removal

Assuming it's similar to this version:

http://www.chriscraft35.com/paragontransmission.pdf

There certainly seems no reason to think that the spline wouldn't just disengage with a good pull aft. I suspect you're right in thinking it's gummed up somehow.

I'd be tempted to insert a couple of wedges into the gap from opposite sides and tap them towards each other as a form of controlled, gentle persuasion..

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Re: Transmission removal

Faster
Thanks for the response. It is the Paragon P200 in the link you posted.

I got pretty aggressive with it this afternoon, no luck. I pulled the starter and think I'm going to squirt a can of PB Plaster in as best as I can. I can't see the splines from the hole but hopefully will get enough PB down there to loosen things up. Not worried about seals being damaged by the PB as I'm doing a complete rebuild of the motor and transmission.

Thanks again

Mike

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post #4 of 21 Old 01-11-2014
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Re: Transmission removal

Good luck!

Ron

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post #5 of 21 Old 01-12-2014
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Re: Transmission removal

I had to cut a hole in the cover housing and take the bolts out of the flywheel on a similar deal. Excessive force will damage the front bearing in some cases. this damage may not show up for a while.

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Re: Transmission removal

Mechsmith

Thats a great idea. Now I just have to figure out what the bolt pattern dimensions are so I know where to drill.

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post #7 of 21 Old 01-13-2014
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Re: Transmission removal

Hopefully you could use a dental mirror or see enough flywheel through the crack that you have to help determine the location of the bolts.

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Re: Transmission removal

Thanks for the follow up message.
Mike

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post #9 of 21 Old 01-13-2014
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Re: Transmission removal

Are there jacking bolts for the transmission ( bolt holes with threads in them ) if so will take a larger bolt and just tighten them each a little at a time till it pops apart worth a check prior to cutting and drilling.

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post #10 of 21 Old 01-14-2014
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Re: Transmission removal

You say you've got a1/4 inch gap>> If you can slip in a nut at each hole, Screw a longer bolt in thru plate, thru nut and into bell housing, Put a wrench to each nut and walk them out the threaded bolt.Even pressure all around until you can get at the drive plate bolts if it hasn't already popt Personally, I like an access hole in the adapter plate(about 2 in dis)With a cover so to access the bolts . Seen many come lose or snap their heads. Also like the drive plate with the rubber cups to cut down on rattle and make in and out easier.
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