[GreenKeys] Model 15 main shaft removal/disassembly/reassembly - instructions?

[Sheldon Daitch]

John,

take a look at:

http://www.samhallas.co.uk/repository/telegraph/ap_field_mtce.pdf

This isn't the greatest reproduction, but pretty much summarizes how we used to do the M-15 main shafts when I worked at the AP in Raleigh.

Well, with one possible exception in my quick review.  Page 6 notes not to replace all the felts, but my boss said to replaced them every time we pulled a main shaft.  Remember, the AP machines ran 24/7, so I guess he felt it was better and reduced the number of service calls.  

Considering the driving time from Raleigh to Shallotte, it was probably a better use of time to replace the felts than it was to risk a problem due to a subsequent felt issue failure.

Sheldon
________________________________________
From: GreenKeys <greenkeys-bounces at mailman.qth.net> on behalf of John Nagle <nagle at animats.com>
Sent: Wednesday, September 3, 2014 8:40 AM
To: greenkeys at mailman.qth.net
Subject: [GreenKeys] Model 15 main shaft removal/disassembly/reassembly -       instructions?

    Well, on the Model 15 I'm trying to restore, all three clutches on
the main shaft are stuck.  By "stuck", I mean "will not slide at all
even when pushed hard". This machine was lubricated with the wrong
lube, and all the light fractions evaporated, leaving the asphalt
part of petroleum behind.  The big soak in solvent got most of
the parts freed up, but where there are parts in tight contact,
like the dashpot piston, the solvent can't get in and the parts
are frozen together.

   The dashpot piston was frozen, and when I finally got the piston
out, there was an asphalt-like streak.  Removing that fixed the
problem.  It looks like the main shaft will need similar
treatment.

   I've never disassembled a main shaft.  Are there instructions?
I have the three standard Model 15 manuals (Description, Adjustments,
and Parts), but none of them have a detailed procedure.
Is there one in some military manual, perhaps?  Thanks.

                        John Nagle


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