13 replies to this topic

[newenglandmini]

My driveshafts are now installed on the car.  I tested my installation by pulling outward at the outer splined end of each outer CV joint.  I was surprised to note that the two driveshafts responded differently.  The right-hand driveshaft cannot be pulled outward by hand force.  The left-hand driveshaft is easily pulled outward.  The motion is in the inner CV joint, and I can pull the shaft outward to the limit of the clamped boot (note - the coupling is not moving with respect to the gearbox output shaft)..  Why is this occurring?

 

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[Stiggytoo]

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Edited by Stiggytoo, 01 February 2016 - 07:14 PM.

[nicklouse]

So you are saying that you can pull the drive shaft out of the outer CV?

If so then one is not fitted correctly. That moment is only on the inboard side of the assembly.

[newenglandmini]

 

So you are saying that you can pull the drive shaft out of the outer CV?

If so then one is not fitted correctly. That moment is only on the inboard side of the assembly.

 

Hello Nick

 

No, as noted above, the motion is at the inner CV joint.  There is no motion at the outer joints, which are restrained by circlips.  There is no circlip at the inner joint...the odd thing is that one side moves and the other does not.

Edited by newenglandmini, 01 February 2016 - 08:02 PM.

[nicklouse]

You are not pulling hard enough.

More grease in one.

[newenglandmini]

Thanks for your guidance.   I'll proceed accordingly.   It's a bit nerve-racking assembling the unfamiliar hardware for the first time without on-site supervision, and I spend a lot of time with the manuals (and TMF) when I'm doing so!

[nicklouse]

Just a thought. Did you fit the cages the right way around?

[newenglandmini]

Nick, yes I did.  I noted that they are not symmetrical, and I took great care to install them as per my technical references.

[tiger99]

There does need to be a 37H8706 circlip and 37H8705 seal at the inner end to prevent the shaft pulling out of the inner member of the pot joint, which would be very dangerous, and damaging, if the car was moving at the time. There must also be a 22G2688 clip on the diff output shaft to prevent the pot joint pulling out.

 

If one pot joint is not telescoping, there is something very wrong with it. It should move in and out freely, otherwise the diff housing will be smashed the first time you hit a bump. That does not usually happen, because complete seizure or locking of the pot joint just does not happen, unless badly rusted or full of muck, which will not be the case here.

[GraemeC]

The 37H8705 seal was deleted from later cars, but I'd also advise fitting it as it does a good job of stopping the splines rusting together.

[Earwax]

can i just chime in, with a WELL DONE to ALL for this thread

 

THE OP gives very clear description, and gives feedback to suggestions

the suggestions are targeted and helpful with precise info

 

the only thing going astray is this comment but i couldn't help myself

[cal844]

can i just chime in, with a WELL DONE to ALL for this thread
 
THE OP gives very clear description, and gives feedback to suggestions
the suggestions are targeted and helpful with precise info
 
the only thing going astray is this comment but i couldn't help myself

I must agree with you here, very informative!

HOWEVER back on topic!!!

[nicklouse]

Ok further thinking. Is it actually pushed in as far as it can?

And back to your first post and how you caused confusion.

You say installed. Nope as the outer end is still free. Installed would be fitted in the hub and hub fitted as well.

Hence my first reply as the outer CV and dive shaft do not slide in relation to each other.

But I would be popping the boot off to see what is going on with the joint as there is very little to stop movement other than incorrect assembly or a foreign object. The other is just a very good seal by the grease causing a vacuum as you try pulling it out.

[newenglandmini]

Ok further thinking. Is it actually pushed in as far as it can?

And back to your first post and how you caused confusion.

You say installed. Nope as the outer end is still free. Installed would be fitted in the hub and hub fitted as well.

Hence my first reply as the outer CV and dive shaft do not slide in relation to each other.

But I would be popping the boot off to see what is going on with the joint as there is very little to stop movement other than incorrect assembly or a foreign object. The other is just a very good seal by the grease causing a vacuum as you try pulling it out.

Hello Nick,

1. Yes, it was, and is fully inserted.

 

2.  The driveshafts were installed and retained by the inner joint circlip, and the hubs were not then installed.

 

3.  The front end is now fully assembled, and I don't plan to do any further testing.  I'm confident that the inner joints are properly assembled and lubricated.  The "pull test" to which I initially referred was accomplished with very light hand force.  Perhaps had I pulled a bit harder there would have been movement, but I was reluctant to do so for fear that the inner coupling may have been forced off of the inner circlip.