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RWD - Rear axle shaft

Volvo RWD 120-130 Forum

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Rear axle shaft 120-130

Hello friends:

Would anyone have a rear axle shaft (Spicer 30) in good shape that they are willing to sell or donate (I'll pay in advance for shipping)? A shaft for the passenger side.

My car is 1967 122S. the reason I need to replace the shaft is because the threading on it had already been damaged and I think someone had attempted to re-thread it and use a different, non-castellated nut. The nut itself felt slightly big over the threads. Maybe I could just let it go, but I was going to do brake and bearing overhaul so why not also go ahead and replace the shaft?

Many thanks in advance for your help!

-DS






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Rear axle shaft 120-130

Friends:

Many thanks for all of your suggestions and input. I was able to find and buy an used shaft, and it has since been installed and now functions with no problems.

Planetman: I’m glad you mentioned the clause about breaking the left-right axle rule with no complications! The seller had said that the shaft should fit either side, so I wouldn’t want to be left wondering if the replacement axle would give me problems later on if it had originally been pulled from the opposite side of the donor 122.

-DS





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Rear axle shaft 120-130

I agree with votx - My brother works for a high end welding shop and made parts for satellites - he often welded material on the long screws used for injection molding so that they could be machined into a proper diameter after they were worn.

You need to find someone who knows the proper materials - the item may need heat treating or some other process afterward.

They make helicoils for threaded holes, perhaps they make something for threaded shafts.





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Rear axle shaft 120-130

What is the thread pitch on these? I have a couple with slightly buggered threads, but not so bad that they could not be fixed with a threading die.





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Rear axle shaft 120-130

Curt;

Its 7/8" (probably NC)...using a splitting die like this one will be better as you can apply it behind the damaged area and work out toward the shaft end.

...and ALWAYS put the nut back on before applying puller force (but you know that now...).
Source: http://www.sw-em.com/Brake_Drum_Notes.htm#metal_portobello
Cheers





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Rear axle shaft 120-130

I have a few of 544 which are a 27 IDK if they are the same ?





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Rear axle shaft 120-130

All Dana 23/27/30 with drum brakes for old Volvos have interchangeable axles.

Even though the axles are the same left and right, As a rule, it's best to put a used axle shaft into the same side as it was originally installed.

However,I have violated that rule many times in the past without a problem.
--
Eric
Hi Performance Automotive Service (formerly OVO or Old Volvos Only)
Torrance, CA 90502
hiperformanceautoservice.com or oldvolvosonly.com





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Rear axle shaft 120-130

Hi Planetman:

Yesterday after a few days worth of driving around, I jacked up the rear to inspect how I did with installing the replacement shaft (on the passenger side). I noticed that there was a slight freeplay when I pushed and pulled the top and bottom of the tire. Only very slightly.

The freeplay was not there after I put everything together after installation, so I was wondering if the bearings had settled in a bit into the race cup while I was driving around. Should I take off the wheel assembly to tap in the race more securely against the bearing and add one more paper-thin shim?

I read that overtightening the race against the bearings can cause damage as well as the opposite. Is that slight freeplay considered unsatisfactory?

Any advice appreciated. Thanks!!

-DS





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Rear axle shaft 120-130

There is supposed to be some end play with the spec being 0.0028"-0.0079".

You want to be closer to the minimum if a new bearing(s) are being installed.

After changing shims and tightening the bolts, I always give the ends of both axles a whack with a copper hammer to set the bearings and then I check the end play.




--
Eric
Hi Performance Automotive Service (formerly OVO or Old Volvos Only)
Torrance, CA 90502
hiperformanceautoservice.com or oldvolvosonly.com





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Rear axle shaft 120-130

Thanks, Eric!





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Rear axle shaft 120-130

If you can't find a replacement, you could have a machine shop weld & re-thread your old one.





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