Date: Sun, 18 Nov 2012 11:01:03 -0500
Reply-To: Dennis Haynes <d23haynes57@HOTMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Dennis Haynes <d23haynes57@HOTMAIL.COM>
Subject: Re: '89 auto trans final drive questions
In-Reply-To: <CA+PsB=VGDFreac80=ffusRE3zZxLa9h=b0Cf8VOFoXudnvSL6A@mail.gmail.com>
Content-Type: text/plain; charset="US-ASCII"
The amount of radial play needs to be defined-measured. The wear areas are
the stub axles themselves and the carrier housing. These usually only wear
or get damaged if something nasty happens or if the box runs dry.
When I overhaul these things there are 6 seals I go to the dealer for. The
axles seals, the two between the final drive and auto section, the torque
converter, and the governor seals. The other stuff in the kits usually
works.
Dennis
-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Ray Brubaker
Sent: Saturday, November 17, 2012 1:34 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: '89 auto trans final drive questions
Dennis, Thanks for your reply. I definitely have some radial play, I may
have to live with some leaking for now. I have checked two other automatics
and they both have radial play and leak. What needs to be replaced to fix
the radial play? What does it take to check/clean the breather, the cap on
the breather turns freely?
Thanks,
Ray
On Sat, Nov 17, 2012 at 11:13 AM, Dennis Haynes
<d23haynes57@hotmail.com>wrote:
> You have "brass" flakes in the final drive? For the o-rings on the
> final drive bearing carriers to leak they most likely were damaged
> upon installation or at some point things had to overheat real bad for
> these rings to fail later. For the output flanges it is normal for
> there to be some axial (in-out) play. There should be no noticeable
> radial (circular) play. It there is the seal doesn't have much of a
> chance. Most axle leaks on these are due to overfilling or the
> breather(s) being blocked. As things heat up if the pressure can't get
> out the oil is going past the seals.
>
> Dennis
>
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On
> Behalf Of Ray Brubaker
> Sent: Thursday, November 15, 2012 10:14 PM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Re: '89 auto trans final drive questions
>
> Thanks for the replies. With the sump off it was clear that the main
> bearing were still tight, it is the flange attached to its drive gear
> that has play.
> The oil was pretty clean with only a small amount of brass flakes and
> a little fuzz on the magnet so I think it will run a while yet.
>
> I changed the flange seal on one side, drove it today, and checked to
> find that it is leaking about the same on that side. Is it likely that
> this leak is from the oring sealing the bearing support? Has anyone
> succeeded in sealing this from the outside with some type of sealant
> instead of taking it apart to change the oring?
>
> Thanks for any help,
>
> Ray
>
> On Wed, Nov 7, 2012 at 4:26 PM, Scott Daniel - Turbovans <
> scottdaniel@turbovans.com> wrote:
>
> > Hi Ray,
> > I don't see that anyone has aaddressed your post yet...
> >
> > in my experience ..it's not the side bearings ..
> > it's the output flange being loose on the splined shaft it sits on.
> >
> > in two cases I just tried another less-worn output flange and that
> > took care of it.
> > My recommendation is never touch the side bearings adjustment.
> > - maybe if you knew it was in really bad shape there and were just
> > trying to get a few more miles .
> > but otherwise..
> > that's a critical adjustment. It affects ring gear left-right
> > position and gear contact pattern on the pinion gear, and preload
> > there too. So no-touchey ever in my book, unless you are doing a
> > whole set up on the R & P and you really know what you are doing.
> >
> > 80 W 90 GL-5 sounds good to me for the final drive section.
> > I wouldn't use the MT-90 there. ..it's a GL-4 for syncronizers .
> >
> > Scott
> > www.turbovans.com
> >
> >
> > On 11/6/2012 7:26 PM, Ray Brubaker wrote:
> >
> > Hi,
> >
> > I'm putting a '89 auto trans Wolfsburg back on the road. I am
> > planning to change the drive shaft seals for leakage and noticed
> > that there is a noticable amount of side and end play in the out put
> > flange.Is this normal or is this from some wear in the diff
> > bearings? I am going to pull the pan to change the oil and see
> > inside and can check better if these bearing are loose. If there is
> > some looseness but no significant metal in the oil should I tighten
> > them up by adjusting both sides equally? Is there something else that
would cause this looseness?
> >
> > The Bentley calls for SAE90 oil for the final drive, what is the
> > current recommendation to use here? Is an 80W-90 GL-5 good. I have
> > some Redline
> > MT-90 that I probably bought around '06, would this be a good choice?
> >
> > I didn't find anything in the archives on these subjects, but maybe
> > I didn't search right.
> >
> > Thanks for any input,
> >
> > Ray
> >
> >
> >
> >
>
>
|