[Fot] Overdrive issue

[malaboge at aol.com]

Tony-
 
The hip bones connected to ...no wait this is tranny talk. However, its all the same. Usually due to "vigorous " shifting or just old age, the "top hat" bushing in the trans on the mainshaft breaks and allows too much endfloat. This in turn usually pounds the little bronze bush in the center of the planetary set. When this goes away, everything moves waay more than any engineer ever thought it would and the bushing you're looking at is usually the recipient of all the load and it too goes away. Sometimes that bushing, just out of spite, spins in the housing or breaks all on its own. In either case the end result is the same...there never was a replacement available that I'm aware of. So, time to get the lathe out and whittle one. or replace the housing!
 
Broken gears and tears.....
              Nick in Nor Cal
 
 
-----Original Message-----
From: tony at tonydrews.com
To: fot at autox.team.net
Sent: Fri, 30 Mar 2007 8:10 PM
Subject: [Fot] Overdrive issue


   I  drained  the  oil  from  my tranny and found a couple of disturbing
   pieces in the oil.  They are from the overdrive.  With Larry's rebuild
   instructions in hand, I ordered the parts that looked likely.  Earlier
   this  evening  I  took  the  overdrive  off of the tranny to begin the
   process  of  replacing  those  thrust  washers.   However, the problem
   wasn't  what  I thought it would be.  It turns out that there's a "top
   hat" bushing in the "pump housing" that the eccentric that runs the OD
   oil  pump  rests  against.   You  can  see it in the background of the
   exploded diagrams of the factory manual and Moss catalogs, but there's
   no  little  number  and  arrow pointing to it.  There's no part number
   listed with Moss for it.
   I've  got  pictures  of the OD / broken part and of another OD with an
   intact part in it on my website at
   http://www.tonydrews.com/Overdrive/overdrive_problem.htm .
   I  would  REALLY  appreciate  it if anyone who has OD experience would
   follow  the  link  (I  promise it's safe) and take a quick look at the
   pictures.   Have  you  seen  this  problem?  What's the fix?  Is there
   one?  Is the bushing a non-replaceable item?
   Right  now, I'm probably looking at taking the pump housing out of the
   "spare"  OD,  but  I don't know the condition of the bores etc. in it.
   Is  that  bushing  something I can press out of one housing and put in
   the other?
   Another possibility is to take another 0.125 thick thrust washer, open
   up  the  ID  to fit over the the output shaft of the transmission, and
   "pin" it to the pump housing.
   Thanks  for  making it this far in this message, and thanks in advance
   for the flood of great advice that will pour forth...
   - Tony Drews
   PS - Shameless plugs:
   Mag wheels on e-bay: 250098005686 []
   Tilton flywheeel and dual plate clutch on e-bay: 250097971114
   TR-7 5 spd clutch disc on e-bay: 250097981947
   Brake Pads, Wilwood Dynalite Single on e-bay: 250097986151 []
   (gotta fund that new crankshaft)
_______________________________________________
Fot mailing list
Fot at autox.team.net
http://autox.team.net/mailman/listinfo/fot
________________________________________________________________________
AOL now offers free email to everyone.  Find out more about what's free from AOL at AOL.com.