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Needle bearings and torsion arm bushings
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70bus Premium Member
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PostPosted: Sat Jun 17, 2023 9:15 pm    Post subject: Needle bearings and torsion arm bushings Reply with quote

By the look of them, most if not all of my needle bearings need replaced-though a local shop said they’d do if I didn’t drive it much :)

The workshop manual made a boxed point of replacing the bushings pressed onto the arms…. But where to get them, and what if you lack press and tool? Can the bushing just be polished up or trued and used w new needle bearings?
I suppose I can just slap it all back together and drive while I save my pennies, but while everything’s apart it seems best to grit my teeth and do what I can.


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PostPosted: Sun Jun 18, 2023 3:20 am    Post subject: Re: Needle bearings and torsion arm bushings Reply with quote

I would remove those bushings and just flip them around so the needle bearings have a new surface to ride on. Polish them up with some very fine sandpaper. I removed mine by heating them up with a propane torch them used a hard piece of wood and small hammer to slide them off. Re-install using the same method.
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PostPosted: Sun Jun 18, 2023 8:36 pm    Post subject: Re: Needle bearings and torsion arm bushings Reply with quote

Thanks - I may see if the garage down the street can do it cheap (my vw shop is on break). Is there a reason the top arms are dull and the lower polished?

While cleaning them, the cap popped off one - I thought they were welded on. Bad, or just whang it back in? Or should I take all the caps off to properly clean?

Th e inner bushings look pretty thin, and I suppose should be replaced, but barring the VW reamer, any suggestions to put them in and get the arms back on? I assume the arm will just knock them farther down the beam if bushings aren't reamed first.
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PostPosted: Sun Jun 18, 2023 11:01 pm    Post subject: Re: Needle bearings and torsion arm bushings Reply with quote

The sleeves used to be polished all over. But the area which was not used seems to be slightly stained.

I would use chrome polish to get them shiny again.

Do you have noticeable radial play between the bushing and the torsion arm? If not I wouldn't worry about it. If you do have play you should try to get the bushings replaced. If you don't you risk to ruin the new needle bearings.

Once your done you need to remember to grease the whole frontend (13 grease zerks total) ever 1600Mi (2500km) to prevent this kind of damage.
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PostPosted: Mon Jun 19, 2023 4:47 pm    Post subject: Re: Needle bearings and torsion arm bushings Reply with quote

Today was spent swabbing out the axle beam... fun! 2" rubber disks on a threaded rod pushed back and forth; got about 6 soup-cans-full of varicolored greae and goo - often in a solid slug that looked like a soup can! Those stayed in one piece til pulled off, but other greases dribbled out like oil. So whatever else I do, at least the torsion bars will be lubed with proper grease when done.

I put the control arms in and tried to wiggle them to gauge bushing wear; each one made a small but audible and perceptible -clunk- on the bushing end when rocked front and back, but were firm up and down. Obviously there should be no movement, but at least they didn't move visibly.

Right now the biggest impediment to redoing the axle is reaming the bushings; there's not much point to replacing the needle bearings now if I'm going to need to redo the bushings later because I lack the reaming tool. I hate to slap al the worn parts back together and hope it's ok when I've gone this far down into the beam. However, that's a distinct option.

Gonna try some local shops and see if any have a reamer to rent. I suppose it's not possible to ream them on a bench top!
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Clara Premium Member
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PostPosted: Fri Jun 23, 2023 3:57 pm    Post subject: Re: Needle bearings and torsion arm bushings Reply with quote

70bus wrote:
Today was spent swabbing out the axle beam... fun! 2" rubber disks on a threaded rod pushed back and forth; got about 6 soup-cans-full of varicolored greae and goo - often in a solid slug that looked like a soup can! Those stayed in one piece til pulled off, but other greases dribbled out like oil. So whatever else I do, at least the torsion bars will be lubed with proper grease when done.

I put the control arms in and tried to wiggle them to gauge bushing wear; each one made a small but audible and perceptible -clunk- on the bushing end when rocked front and back, but were firm up and down. Obviously there should be no movement, but at least they didn't move visibly.

Right now the biggest impediment to redoing the axle is reaming the bushings; there's not much point to replacing the needle bearings now if I'm going to need to redo the bushings later because I lack the reaming tool. I hate to slap al the worn parts back together and hope it's ok when I've gone this far down into the beam. However, that's a distinct option.

Gonna try some local shops and see if any have a reamer to rent. I suppose it's not possible to ream them on a bench top!


Read the factory book about reaming the bushing in the beam.
I think there are some pics of Greg doing the reaming in our 56 westy… check out the thread on that bus. The reamer is a bus specific tool.

https://www.thesamba.com/vw/forum/viewtopic.php?p=1487394&highlight=#1487394
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PostPosted: Fri Jun 23, 2023 4:54 pm    Post subject: Re: Needle bearings and torsion arm bushings Reply with quote

Thanks Clara; yes, book would not stoop to tell me some half-ass non-OG way, but I was hoping someone else had shrugged and given a non-VW-reamer-tool method a try.

All the tools are available from various online markets, but the $800 in stuff I may never need again is galling. Unfortunately my buddy who shared garage space took all his factory tools with him when he left town 40 years ago!

This seems like a tool a samba person could rent out, with a sufficient deposit fee of course. :)
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PostPosted: Fri Jun 23, 2023 6:07 pm    Post subject: Re: Needle bearings and torsion arm bushings Reply with quote

Another option for you is to
Grind it along the length like this.

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remove it.

You can use polyurethane bushings instead

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PostPosted: Mon Jun 26, 2023 11:46 pm    Post subject: Re: Needle bearings and torsion arm bushings Reply with quote

Picked up some grease at the flaps today; only ‘geneal purpose’ grease they had was STP All-purpose. Open it up and it’s red. Grease in axle tube was (mostly!) brown.

I see a few folks use Sta-lube Multipurpose amber grease; both are NLGI No. 2 lithium greases but the STP is a lithium stearate grease. Not sure if Stalube is lithium stearate, complex or hydroxystearate but they are all compatible.

Any reason not to use this STP to fill the axle?
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PostPosted: Tue Jun 27, 2023 6:31 pm    Post subject: Re: Needle bearings and torsion arm bushings Reply with quote

Yes use it.
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PostPosted: Wed Jun 28, 2023 8:10 am    Post subject: Re: Needle bearings and torsion arm bushings Reply with quote

70bus wrote:
Thanks Clara; yes, book would not stoop to tell me some half-ass non-OG way, but I was hoping someone else had shrugged and given a non-VW-reamer-tool method a try.

All the tools are available from various online markets, but the $800 in stuff I may never need again is galling. Unfortunately my buddy who shared garage space took all his factory tools with him when he left town 40 years ago!

This seems like a tool a samba person could rent out, with a sufficient deposit fee of course. Smile


I think Greg once lent that tool out. But won’t again It is a rare and expensive tool that does wear with use. Reamers wear down, and if used not correctly will wear quicker. Also, the reamer and its wooden case can be damaged in shipping.

I have heard you can use a general hone, but of course you do not get the accuracy of the factory tool.
The factory tool is 4 feet long so you ream the bushings in line. Then the trailing arms are parallel to each other. A regular reamer doing one at a time does not keep the line straight across the beam.

Is the accuracy that important? I guess they do it for a reason.

I don’t think the guys who use the polyurethane bushings use the factory reamer. Ask them? Maybe some do.

Greg has rebuildt beams for people. Iirc, you can ship an empty beam FedEx.
Probably about $50. But If assembled all the way with spindles and drums, it needs a shipping company. He’s got a lot on his plate right now, but might be talked into doing the bushings. Then again, maybe you’re wanting to do it yourself.
The worst part of the job is what you are doing….cleaning everything out.

If you are getting the beam powder coated, install the bushings after. If the beam is baked with bushings in, it is bad for the bushings. One guy we know did this, and Then the bushings fell apart inside the beam. It handled poorly, had to be rebuildt.

IMO, after the bushings are sorted, use any kind of normal all purpose grease. I personally don’t like the smell of Bosch grease, tend to buy sta-lube
Do grease it often in the first 3k miles, till clean grease comes out after a couple pumps. There will be empty pockets in there at first, even after packing it with grease.

After, lube it every 3k miles, or more often on bad roads, and again, clean grease should come out the seals after a few pumps.

Even on a non rebuildt beam, grease it every 3k miles. Grease till clean, thick grease comes out. Often old grease is liquidy. Ick. Catch that ook with a rag, and just pump grease through till clean thick grease comes out. It can take a full tube, rather than just a couple pumps.
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PostPosted: Wed Jun 28, 2023 9:25 am    Post subject: Re: Needle bearings and torsion arm bushings Reply with quote

You forgot 'grease is good' but point was made :)

I swabbed and ran towels through the beam again and I have the interior pretty clean, so I'm less worried about incompatibility now; I'll probably mark the beam w/ type of grease inside to remind me.

I have some time to decide what to do on rebuilding vs. going with what I've got (another suggestion was swap arms side to side). I suppose I could just install new bearings no matter what else I do; current ones are intact and spin but rumbly instead of whispery. One person said they don't replace them unless they are falling apart, so I could cross fingers and reassemble. I can always redo later after I gather proper tools, or send it out. I just hate to backtrack...
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