What broke on my 71 Camper ?

vwbuser71 · Posted: Sun Nov 27, 2011 8:00 am Post subject: What broke on my 71 Camper ?

When backing my 71 camper out of the garage, it felt like the emergency brake was on , and it wouldn't roll. It finally let loose as the clutch was released, with a clunck. The bus drove Ok for about a mile, but then when starting out in 1st gear from a stop light, it bunny hopped a little and then a loud clunk from the rear, and she was dead. The engine was still running and I could shift, but no drivetrain. What did I brake?

borninabus · Posted: Sun Nov 27, 2011 9:31 am Post subject:

sounds like you you either stripped the splines in one of your drums or a CV fell off.

or your trans is kaput. but lets hope for the best Smile

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aeromech · Posted: Sun Nov 27, 2011 10:17 am Post subject:

Had the bus been parked for a while with the brake set? I'll bet your parking brake locked up. I suggest removing the rear drums for cleaning and inspection.
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Westfabulous · Posted: Sun Nov 27, 2011 10:26 am Post subject:

Could be CV's or it could be time for a new clutch. I'd look at these as part of my diagnosis.
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seventyfo · Posted: Sun Nov 27, 2011 10:34 am Post subject:

I second the strippedsplinesinthedrum theory.
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rustbus · Posted: Sun Nov 27, 2011 10:49 am Post subject:

threads like this should be a poll!

I vote CV came loose - have you looked underneath it yet? if it was CV it would be obvious.

drumroll!
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SGKent · Posted: Sun Nov 27, 2011 12:16 pm Post subject:

CV
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71weekender · Posted: Sun Nov 27, 2011 12:18 pm Post subject:

Wildthings · Samba Member Joined: March 13, 2005 Posts: 52267

Certainly easy to check for a stripped drum or busted CV. If those are all good then next would be something wrong with the pinon in the transaxle.

SGKent · Posted: Sun Nov 27, 2011 12:24 pm Post subject:

71 has a forged flange like a late bay. Pretty hard to strip them.
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vwbuser71 · Posted: Sun Nov 27, 2011 12:49 pm Post subject:

Thanks all, for the quick responses. Just checked the CV's and the drivers side
CV is broken off from the drum. Can I re-install it, or is replacement the best option. Any other damage I should be looking for to the drum Etc?

SGKent · Posted: Sun Nov 27, 2011 1:06 pm Post subject:

Wildthings · Samba Member Joined: March 13, 2005 Posts: 52267

curtis4085 · Posted: Sun Nov 27, 2011 6:00 pm Post subject:

make sure to put a new boot on it when you replace the cv. Rochford has some great ones. Or you could get the CV join and german boot at busdepot and pop it on. I recommend Rockford and German CVS.

heres Rockford boot

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Randy in Maine · Posted: Sun Nov 27, 2011 6:24 pm Post subject:

And at least repack the joint sine you are in there. If it were me, I would do all 4 of them since you are doing it anyway. I just hate for them to go bad in the middle of deep nowhere though.

Invest in new belleville washers (usually not included in the re-pack kits) and make sure you have all the torque spreaders.

curtis4085 · Posted: Sun Nov 27, 2011 6:33 pm Post subject:

Wildthings · Samba Member Joined: March 13, 2005 Posts: 52267

Each joint should have three plates under the bolt heads to spread the load onto the boot flange more evenly. The Belleville washers are the slightly curved washers that fit under the bolt heads but on top of the spreader plates.

The most important thing you can do (in my opinion) is to get the bolts tight enough. VW upped the recommended torque on the later Transporters (Vanagons) to 33 ft*lbs, IIRC.

Desertbusman · Posted: Sun Nov 27, 2011 7:46 pm Post subject:

Time to remove both axles and go thru the 4 CV joints, maybe replace boots and probably get 24 new bolts and the special serrated washers. Then put it back together exactly per the book. If one failed the other 3 might also since it wasn't done right when they were put on before.
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curtis4085 · Posted: Sun Nov 27, 2011 8:39 pm Post subject:

SGKent · Posted: Sun Nov 27, 2011 9:18 pm Post subject:

and check the tightness on the bolts every time you change the oil. If any feel lose retorque them all.
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