Hi Chris,
What you have leaking is the O-ring on the end of the shaft that the
low-reverse servo arm pivots on. You can change this without trans removal
but it takes a little work. You'll have to remove the tailshaft. Remember
there is a snap ring under the cover that is now hidden by the rear
transmission mount. The pan and valve body will also have to be removed.
You can then take a long punch from the inside of the case and tap that
shaft rearward to get at the offending o-ring. I never completely remove
the shaft just enough to replace the O-ring. Makes it alot easier to line
everything back up and less chance of dislodging the reverse band strut
link. I always replace as the seals and gaskets that were distributed
during the procedure including the selector shaft seal.
Stevan Miner
Miner Auto Service
Winnebago MN
----- Original Message -----
From: "Chris Strohmeyer" <chrisstroh@xxxxxxxxxxx>
To: <mailing-list@xxxxxxxxxxxxxxxx>
Sent: Sunday, December 17, 2006 12:45 AM
Subject: IML: 727 leak
This is going to be hard to describe but here goes. On my 67 Imperial I
have a leak at just below the vertical surface that the tailshaft bolts
to. It's a small space between the lower flange of the tailshaft and the
TOP of the oil pan FLANGE. To see it you have to look from the back of
the transmission looking forward. It's slightly off center of the
tailshaft and where it's leaking appears to look like the end of a aprox
3/4" diameter shaft. Oil is seeping from this "shaft end". I've looked at
the breakaway photos of the 727 and see nothing that looks like this
inside so my next step is to drain the tranny,pull the pan and see.
Does anyone know what I'm talking about?
Thx,
Chris Strohmeyer
----- Original Message -----
From: "Robin Giesbrecht" <robings@xxxxxxxxxxx>
To: <mailing-list@xxxxxxxxxxxxxxxx>
Sent: Saturday, December 16, 2006 9:59 PM
Subject: Re: IML: power steering leak - O rings
You can buy rebuild kits for the power steering pump that are really
only a seal kit. There is a big oring that seals the whole canister and
a few more seals for the shaft and the relief valve I think. Not that
hard to do.
Robin Giesbrecht
72 Imperial
From: Kenyon Wills <imperialist1960@xxxxxxxxx>
Reply-To: mailing-list@xxxxxxxxxxxxxxxx
To: mailing-list@xxxxxxxxxxxxxxxx
Subject: Re: IML: power steering leak - O rings
Date: Sat, 16 Dec 2006 21:26:56 -0800 (PST)
--- Chris Strohmeyer <chrisstroh@xxxxxxxxxxx> wrote:
> Kenyan said...........
>
> 4. "Bad o-rings"? Anyone else that works on cars
> where you live? That sounds like bad advice to me,
> but it may be out of context and part of other info
> that he gave?
>
> Aren't there 1 or 2 large o rings on the power
> steering pump that seals the
> reservoir can?
>
> Chris
True. There are o-rings. The way that the thing's
put together sorta precludes catastrophic fluid loss
as described in the letter posted here, but to address
the question:
If I were going to pay a mechanic to deal with this, I
would buy a replacement pump unit that comes with a
warranty so that I didn't have to worry about it.
Reason being that I don't agree with paying a mechanic
to only partially rebuild a pump for a labor charge
that could very likely equal or exceed the cost of a
replacement. I would pay the rehab factory that will
give a warranty do that portion instead and get the
whole thing spec'd out by someone that does nothing
but. That's what I'd do, anyway.
Also, a failed O-ring seal is highly unlikely to cause
the sort of rapid fluid loss described, so that's what
I was thinking based on the info given, but I wasn't
there.
Please use an o in my name. I'm particular about
that.
-Kenyon
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