Ulix Goettsch wrote:
>
> If the alignments truly was important, wouldn't that imply that they
> balanced the drive shaft together with the differential input yoke and
> gear?
> I think that is highly improbable...
>
> Ulix
>
====
Improbable almost to the point of impossibility. U-joint phasing is very
important, but on one-piece driveshafts (with the slip fitting at the
trans output shaft) it's impossible to change the phasing; that's built
right into the shaft, and no marking is necessary. It is possible that
the driveshaft and the yoke at the trans end may have been balanced as a
unit; in that case it would be best to mark and reassemble the same when
installing a new u-joint. But every time I've seen instructions that
called for marking, they talked about maintaining phasing rather than
balance.
If the shaft is two-piece with the slip joint between, then it's
possible to change the phasing if you take the slip joint apart. These
are usually (maybe always) balanced together, so should be marked for
reassembly the same way.
In this specific instance, the question is about the assembly of the
rear joint to the diff input yoke. There is no need to be concerned
about which way it goes back together.
====
> On Mon, 16 Feb 1998, Chris Stevenson wrote:
>
> > Its always a good idea to mark things like the driveshaft etc., but in Your
> > case it might not be a problem when You put new U-joints in it. You can only
> > mount it 180 degrees off so if You have any vibrations from it, turn it 180
> > degrees and if it still vibrates, You`ll have to get it balanced.
> > Good luck
> > Chris
> >
> > Dick Watson wrote:
> >
> > > With the help of a friend, and PO of my 78 Midget 1500, we disconnected
> > > the rear of th drive shaft to replace the U-joints. After disconnecting
> > > this, I suudenly remebered that my Haynes manually said to mark where
> > > the shaft and the differential connected. Having failed to do this on
> > > the rear. We did mark it on the front of the drive shaft when we took it
> > > apart.
> > >
> > > Can anyone tel me (us) how critcal this is and, if it is imperative that
> > > it goes back exactly the same way it came out, what we can do about it
> > > now?
> > >
> > > Thanks in advance
> > >
> > > Dick Watson
> > > '68 & '78 Midgets
> >
> >
> >
>
> Ulix __/__,__
> .......................................................... (_o____o_)....
> '67 Sprite
--
Heather & Joe Way
Sierra Specialty Automotive
Brake cylinders sleeved with brass
Delco alternator One-Wire conversions
Quincy, CA
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