Good advice.
Never Be beaten by Equipment
Kas Kastner
----- Original Message -----
From: malaboge@aol.com
To: tony@tonydrews.com ; fot@autox.team.net
Sent: Saturday, March 31, 2007 11:39 AM
Subject: Re: [Fot] Overdrive issue
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@tonydrews.com
To: fot@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)
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