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 Author  Topic: Transmission question
Twostick

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Post a Reply To This Topic    Reply With Quotes     Edit Message   Posted on: Sep 7, 2011 - 12:37pm
I am posting for a friend of mine who is looking for the tools you use to measure the various stack heights for the late version of the transmission on a 4M 2500. If he can't get the actual tooling, would anyone be privy to the actual dimensions that the tools measure? He has a full set of manuals but there is no dimensions just use this tool when referring to setting them up. If he had the dimensions he could make his own tooling.

Thanks

Kevin McCaw


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  Jerry Gilmartin

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Post a Reply To This Topic    Reply With Quotes     Edit Message     View Profile of Jerry Gilmartin   Send Email To Jerry Gilmartin Posted on: Sep 7, 2011 - 1:35pm
Twostick,
Welcome to the mesage board! My name is Jerry, and I am on the crew of the PT658 in Portland, OR. We have 3 running V12 Packard Engines (5M-2500) with the Snow Nabstedt "Joes Gears" Transmissions. Currently, we are adjusting the clutches so they will have less trouble engaging and disengaging with the gear shift lever. Our Port Engine is particularly troublesome lately. We are adding shims specifically. What are the "Stacks" you are referring to? I can ask our motor macs actually doing the work when I go to the boat on Thursday. Jerry

Jerry Gilmartin

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Twostick

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Post a Reply To This Topic    Reply With Quotes     Edit Message   Posted on: Sep 7, 2011 - 1:52pm
Thanks for the welcome.

When you have the trans dis-assembled on the bench you re-assemble it vertically stacking each unit on top of the next so to speak. There are gauge tools that you use for stages of the assembly to measure that each stage is the correct distance from the last so it stacks up correctly.

Kevin


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  Jerry Gilmartin

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Post a Reply To This Topic    Reply With Quotes     Edit Message     View Profile of Jerry Gilmartin   Send Email To Jerry Gilmartin Posted on: Sep 8, 2011 - 11:50pm
Hi Kevin,
We have never disassembled our transmissions on a bench. Therefore none of our current Motor Macs have ever seen these stack jigs you are talking about. Sorry I couldnt be more helpful. Jerry

Jerry Gilmartin

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Twostick

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Post a Reply To This Topic    Reply With Quotes     Edit Message   Posted on: Sep 9, 2011 - 3:01pm
Thanks for trying Jerry. If you could have your guys ask around it would be appreciated. This engine is in a 47' mahogany runabout so we don't have the knowledge base at our disposal that you fellows do. Not many people left that have ever seen inside one of these monsters lol.

If you have access to a service manual you will see what I am looking for. The tool numbers are IIRC AY 4008 AY 4009 and AY 484 or similar. The manual will show them in illustrations with the #'s. With my limited understanding of this transmission they seem to be critical to getting the dog clutch to engage/disengage correctly as the measurements will dictate what shims to install.

If you know anyone my friend could call out there, that would be a big help also.

Thanks again

Kevin


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Twostick

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Post a Reply To This Topic    Reply With Quotes     Edit Message   Posted on: Oct 2, 2011 - 6:31am
Anyone else care to take a crack at this?
Kevin


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Jim Melanson

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Post a Reply To This Topic    Reply With Quotes     Edit Message     View Profile of Jim Melanson   Send Email To Jim Melanson Posted on: Oct 2, 2011 - 7:23am
Fred Heims old boat?? Is that the one you are talking about? J and M Machine Co. in Southborough, MA rebuilt that motor they may know what you are talking about. John or Mike Gulbankian are who you would want to speak with.
I watched some of the tear down of that motor years ago.

J&M Machine Company
40 Mt. Vickery Road,
Southborough, MA 01772

Tel : (508) 460 0733
Fax: (508) 460 6541
email : sales@jandm-machine.com

http://jandm-machine.com/



Jim Melanson

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Twostick

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Post a Reply To This Topic    Reply With Quotes     Edit Message   Posted on: Oct 2, 2011 - 6:30pm
He has spoken with J+M and they gave him a lead that didn't pan out. I don't know the history of the engine. The current owner bought it and commissioned a 47' mahogany runabout to put it in.

Kevin


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