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Differential question
Posted by: ac1948 ()
Date: February 10, 2019 12:57PM

Passenger side stub axle has excessive play/slop. U joint assembly can be moved about 3/8" side to side. I can grasp the tire at 3 and 9 o'clock and move it and see the axle move. This effects the handling of the van also.

Jerry Murray
Charleston, SC

63 Rampside, PG,110

63 Greenbrier, PG, 110

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Re: Differential question
Posted by: ac1948 ()
Date: February 10, 2019 01:08PM

Forgot to state, this is a 64 differential.

Jerry Murray
Charleston, SC

63 Rampside, PG,110

63 Greenbrier, PG, 110

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Re: Differential question
Date: February 10, 2019 02:09PM

Possible the internal splines are worn in the yoke. Been there, Fixed that.
Folks often forget to re-install the bolt/washer retainer on the axle after they tap the yoke back on. Many miles of micro-wear later and the soft iron of the yoke gets worn away.




Dan Davis ~ Pierce County, WA ~ CORSA Western Director + Corvairs NW + North Cascades Corvairs + Corvanatics
1966 Corsa Turbo coupe ~ ~ 1966 140 Corsa ~ ~ 1965 Monza 140/4 'Vert Sierra Tan/Fawn ~ 1964 Monza 'Vert (SOLD) ~ 1960 Monza Ermine White/Red PG ++ ~ 1965 Monza 140/4 Evening Orchid w/ ivory/black interior ~ 1962 Monza Wagon 102/4 ~ 1963 Rampside/Scamper ~ 1963 Red/Greenbrier ~ 1969 Ultra Van #468

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Re: Differential question
Posted by: ac1948 ()
Date: February 10, 2019 02:39PM

Wish this was the problem. I did have a worn yoke on my Rampside but not the case on the van. I have the axle out and can insert other assemblies into the differential and they all are loose in the same way. It seems like the play must come from the side gear somehow.

Jerry Murray
Charleston, SC

63 Rampside, PG,110

63 Greenbrier, PG, 110

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Re: Differential question
Posted by: joelsplace ()
Date: February 10, 2019 03:13PM

Either the inner yoke is worn or the differential carrier is worn where the yoke slides in and out. I guess the side bearing could be shot but that should make noise.

Joel
Northlake, TX
5 Ultravans, Lost count at 100 Corvairs...

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Re: Differential question
Posted by: Frank DuVal ()
Date: February 10, 2019 03:18PM

I have changed the yolk half that fits the differential to get some slop out. Friend’s 63 in Maryland would not pass inspection because of it. Changed inner yolk half and it passed.

Most times it is ignored.grinning smiley

The other part to change is what that yolk half rides upon. Of course that is differential tear down time.winking smiley

Frank DuVal

Fredericksburg, VA

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Re: Differential question
Posted by: ac1948 ()
Date: February 10, 2019 04:00PM

Thanks for the replies.The problem has to be internal so I will swap out the differential with a spare and tear the bad one down as time allows. Thanks

Jerry Murray
Charleston, SC

63 Rampside, PG,110

63 Greenbrier, PG, 110

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Re: Differential question
Posted by: vairmech ()
Date: February 10, 2019 07:24PM

I rebush the carriers to eliminate that play.

Here is a remade late carrier to work in an early getting that fix.





Ken Hand
Handy Car Care
248 613 8586

Vairmech@aol.com

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Re: Differential question
Posted by: joelsplace ()
Date: February 10, 2019 07:34PM

That's the way to do it!

Joel
Northlake, TX
5 Ultravans, Lost count at 100 Corvairs...

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Re: Differential question
Posted by: ac1948 ()
Date: February 11, 2019 04:26AM

Ken, I think you have identified my problem. As I have to pull the pack anyway I will install the spare. Thanks for the tip.

Jerry Murray
Charleston, SC

63 Rampside, PG,110

63 Greenbrier, PG, 110

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Re: Differential question
Posted by: thumper477 ()
Date: February 11, 2019 04:59AM

Maybe a cool fix to stop yoke seals from leaking?

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Re: Differential question
Posted by: TerribleTed ()
Date: February 11, 2019 07:01AM

Keep in mind that there is always some slop when the car is jacked up and the suspension hanging. The axle comes out of the side of the diff some so that there is less engagement and more slop. There is always a little slop even when the car is sitting on its tires. 3/8" slop sounds like more than normal with the wheels hanging, but most cars I have worked on have around 1/4" of side travel when the suspension is hanging. How much is normal in this situation I really do not know (perhaps they are all worn).

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Re: Differential question
Posted by: toms73novass ()
Date: February 11, 2019 07:51AM

Ken, when you remachine the carrier, what it the measurement spec that it is bored?

-Tom


63' Monza Spyder Convertable (in process) MY Build Thread
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NFCC
Grand Island, NY

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Re: Differential question
Posted by: REM654DPG ()
Date: February 11, 2019 08:09PM

The factory spec is 1.1575 to 1.1595. The bore will shrink .0005 when the bearing is installed so I shoot for the middle of that spec when installing the bushing.

Regan Metcalf
Portland, OR

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Re: Differential question
Posted by: vairmech ()
Date: February 12, 2019 04:41AM

toms73novass Wrote:
-------------------------------------------------------
> Ken, when you remachine the carrier, what it the
> measurement spec that it is bored?
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

Since the parts are not new anymore I also want the drive yoke and I fit the bushing to the yoke. I also do the final fitting with the bushing installed and I try for the closest fitting that will allow the yoke to slide full travel and that is generally around .005".

Like I said I don't just bore to a number I hand fit each one.

Ken Hand
Handy Car Care
248 613 8586

Vairmech@aol.com

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