Volvo RWD 120-130 Forum

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Low Tech Brake Drum Puller. 120-130

posted by  TR Conn on  Tue Dec 3 23:53 CST 2013
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last visit: Fri Oct 24 10:32 CST 2014
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I ran across this on the web. Since I don't have a puller I thought I'd give it a try. Works pretty well, though a little scary with a stubborn drum.

http://www.brickboard.com/GALLERY/images/11428.jpg



Operate at your own peril!









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    Am I misunderstanding? ... 120-130

    posted by  Ken C on  Mon Dec 9 00:17 CST 2013
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    Am I misunderstanding what's happening here?

    The lug bolts aren't attached to the drum, they're attached to the hub behind the drum and merely pass through the holes in the drum, right. Then it seems that, rather than pulling off just the drum, the hub is being pulled off the axle spindle (or what the top of the bottle jack is pressing against).

    Perhaps I don't understand the parts configuration of the 120-130 cars -- I'm more familiar with 240s. But I hope someone can enlighten me.

    Thanks.







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      Yes, you are misunderstanding! ... 120-130

      posted by  Ron Kwas on  Mon Dec 9 04:53 CST 2013
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      Ken;

      "The lug bolts aren't attached to the drum, they're attached to the hub behind the drum and merely pass through the holes in the drum, right." Wrong.

      Lugstuds are in-fact pressed into the drum on 544/122/1800 models (and not part of a halfshaft with hub assembly, like on many later vehicles)...drum is held fast and concentric to halfshaft by a tapered, keyed center hub which interfaces with the tapered halfshaft.

      Cheers








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    Low Tech Brake Drum Puller. 120-130

    posted by  58duett on  Thu Dec 5 00:27 CST 2013
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    last visit: Wed Oct 22 22:29 CST 2014
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    Wow, seems like a lot of effort to get around buying or borrowing a proper puller. In my old VW days I would loosen the nut a turn and drive a loop around the block, not good for the axle / drum mating surface, but it did the trick .








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      Low Tech Brake Drum Puller. 120-130

      posted by  benski on  Sun Dec 8 19:40 CST 2013
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      I don't like it much; there seem to be a lot of failure points in the loop here. I'll stick with some heat and my ipd puller.








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    Low Tech Brake Drum Puller. Flying chains - Bah Humbug! 120-130

    posted by  james_a_sousa on  Wed Dec 4 20:27 CST 2013
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    Wreckers use a piece of chain with a lower rating than their cables because chains have no particular tendency to fly when they break because they are not elastic.

    If a chain rig flies, it is because there some geometry problem, something elastic involved, or something that moves due to gravity.








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    Low Tech Brake Drum Puller. 120-130

    posted by  oldyellr on  Wed Dec 4 11:57 CST 2013
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    That's a joke, right? How would pulling on the studs remove the drum? The studs are pressed in from the back of the hub flange.
    --
    1992 745, >500k km








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      Remeber Physics101! 120-130

      posted by  Ron Kwas on  Wed Dec 4 16:56 CST 2013
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      oj;

      It's certainly funny from a Rube Goldbergian perspective, but it's no joke! The forces are absolutely correct: Pulling on Studs with respect to pushing on axle shaft. The Studs wont pull out because they have a lip on the drum backside...something else has to give...and that is the tapered joint. It's called a puller because it pulls the drum from the shaft...the equal and opposite action really "pushes" the tapered shaft out of wheel hub.

      Cheers








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    Low Tech Brake Drum Puller. 120-130

    posted by  simplesimon on  Wed Dec 4 06:39 CST 2013
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    Those links at the ends of the chains better be strong!








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      Low Tech Brake Drum Puller. 120-130

      posted by  derek uk on  Wed Dec 4 06:57 CST 2013
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      +1 to that. A flying link could kill you. Fixed bars or even threaded tubes turnbuckle style would be cheaper, easier, safer. Better still buy the proper Volvo type puller. Not that expensive.








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        Low Tech Brake Drum Puller. 120-130

        uid 779's pic
        posted by  matt b on  Wed Dec 4 11:42 CST 2013
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        I could see myself doing something like this. Question... do bottle jacks work sideways? Maybe they do, maybe they don't.

        As for chain links breaking... perhaps a heavy blanket over the whole top of the whole whole apparatus. Overall, looks like a nifty idea.

        --
        -Matt I ♥ my ♂








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          sideways hydraulics 120-130

          posted by  hairy apple on  Sat Dec 28 09:23 CST 2013
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          I have never been able to get a hydraulic jack to operate sideways or upside down, so this is interesting in itself.

          As far as chains not flying when they break that is not always the case, at least in my experience. As a kid my dad was in the excavating business and he had two BIG Cats, a 977 loader and a D-9 bulldozer. We were using the 977 to attempt to pull new tracks onto the D-9 (each complete track weighed about 10,000 pounds) using a hefty 3/4" chain with each link having a welded web as reinforcement. My Dad told me to stand way back as he was afraid the chain might explode. When he started to pull the first thing that happened was the chain links "stretched" out
          like rubber bands then the weakest link expolded and took off like a .45 cal bullet while the two ends of the chains snapped back with tremendous force. No one hurt, no damage done just a ruined chain and a lesson learned.








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          Low Tech Brake Drum Puller. 120-130

          uid 55's pic
          posted by  john sargent on  Wed Dec 4 12:30 CST 2013
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          Bottle jacks do work on their side if the pump is down, which allows hydraulic fluid to get into the pump.

          Besides flying chains, I'd be worried about damaging the wheel studs.
          --
          john








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            Low Tech Brake Drum Puller. 120-130

            posted by  TR Conn on  Wed Dec 4 23:55 CST 2013
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            last visit: Fri Oct 24 10:32 CST 2014
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            The range of comments is very interesting. These drums were really stuck. I kept my distance with a cheater bar when the pressure got high. Some heat and a few taps with a dead blow mallet did the trick. Of course, I kept the nut on the axle so nothing went flying.
            Bending or breaking studs was of little concern, notice the scoring inside the "puller" drum. That one came from the left side. The right side was similar. Both will be replaced.








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              Low Tech Brake Drum Puller. 120-130

              posted by  iadr on  Wed Jan 1 17:49 CST 2014
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              last visit: Wed Jan 1 18:39 CST 2014
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              There is absolutely nothing wrong with those drums. If you are the least worried about a scratch, you are so poorly informed you should not be working on this, as chances are you will leave it inferior to how it was when you began.








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              Low Tech Brake Drum Puller. 120-130

              uid 5322's pic
              posted by  alschnertz on  Thu Dec 5 11:22 CST 2013
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              Did you have any problem getting an even pull?
              It kind of looks like some of the links bent at the hub.
              Heat works wonders - I've used it to pull a few stubborn ones myself.

              Creative solution IMO.
              --
              "Differences of opinions should be tolerated, but not if they're too different' - Sharon Craig








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                Low Tech Brake Drum Puller. 120-130

                posted by  TR Conn on  Sun Dec 8 23:21 CST 2013
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                last visit: Fri Oct 24 10:32 CST 2014
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                Even pull?
                I think the links with the greatest pull bent until all were pulling the same tension.
                Having 5 chains seems as though it would be more even than the pullers that attach to only three lugs.






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