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Help! Rear shock for 75, 164

I posted to all of you because the 75 164 is pretty close to the 240s. Not inside the spring.

I am replacing the rear shocks. I hope, but the bottom bolt won't come out. The nut is loose, but it appears that the rubber on the bottom shock mount is stuck to the bolt. The top is off and I can move the shock back and forth but the resistance of the bottom keeps the shock at close to 90 degrees.
I have tried to hammer the bolt loose with my 16oz hammer (nut on the bolt and a 6" rod to clear the brakes. If I need a torch, this project is going to a garage.
Thanks,
Klaus
--
98 V70Rawd(101Kmi), 95 854T(85K mi), 75 164E(173K mi)








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    Help! Rear shock for 75, 164

    Hammering endwise usually doesn't work too well on these because of the shear
    strength of the rust/rubber bond and the low elastic modulus of the rubber.
    All the energy is dissipated deforming the rubber before you develop enough
    force to break it loose. Something like a press would be better. Maybe a
    giant C-clamp....
    Have you tried to get any lube into it? If you can get it in there it may
    help. Avoid using a torch on rubber. It's messy and nasty as well as a fire
    hazard.
    --
    George Downs Bartlesville, Heart of the USA!








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      Help! Rear shock for 75, 164

      Thanks George,
      I have a 6" C clamp, so I will try that tomorrow. Rain in the forcast, so what else can I do... It is impossible to get penetrating oil on the shaft because the frame rails get in the way. The top of the old shock had a plastic sleeve, but I can't see the bottom one. The new Boge (sp) have metal sleeves, so should I grease them before puting them on - if I get that far - or doesn't it make a difference? I can move the old shocks up an down with just two fingers, guess they are gone!

      Klaus
      --
      98 V70Rawd(108Kmi), 95 854T(88K mi), 75 164E(173K mi)








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        Help! Rear shock for 75, 164

        I remember the time a friend and I spent 4 days getting a lower A-frame bolt
        out of my 69 164, using hammers, torches, big wrenches, etc. It was in Panama
        where everything is exposed to moisture if not well protected and the bolt was
        rusted into the tube. We found that by putting about 150 ft-lb of torque on
        the bolt, heating the tube(that runs through the crossmember) red and hammering n the end of another tube screwed onto the threaded end of the bolt, we could
        budge it a little. Finally got the first 6" of endwise movement and from there
        it was fairly easy. I have greased them since then and not had the problem
        again. You can put stuff together TOO clean!

        Yes, by all means grease the bolts when you put it back together!

        Do you have any endwise movement in the bolts on your shocks? Wherever the
        threaded end of the bolt disappears into the bushing, frame, etc, spray Blaster
        or Kroil in with a snoot repeatedly and maybe some will work its way in to
        where it is stuck. Once you start getting breaks in the bolt/rubber bond,
        the oil will soak in if it is in there and will help.

        My 164 had bad rear shox when I got it in 71, 2 years old. I neglected them
        and eventually developed a crack in the swingarm. I had a friend who was a
        Panamanian aircraft welder, probably the best in the country, and he fixed it
        for me. Still fine. Drove the car yesterday and most other days.
        --
        George Downs Bartlesville, Heart of the USA!








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          Finally, shocks on

          It took a tourch and air gun to get them off. The ASE took the nut off, tourched the bolt and spun the bolt with his air gun at the same time. Red hot, the bolt finally came out of the sleeves. The rubber on the old shock melted.
          He put on axle grease, per my request when it was reassembled. Two hours on the lift. Also found the front tranny seal leaking badly, makes for a great undercoat. The tranny only leaks when in gear, under pressure.
          Thanks for the tips,

          Klaus
          --
          98 V70Rawd(108Kmi), 95 854T(88K mi), 75 164E(173K mi)








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          Mount totally frozen...

          Off to CarX! They have the best labor rates around so long as I need more muscle than brains. I can turn the entire bolt from the inside lug and I suspect that the metal flange on the shock is stuck to the bolt. I used copious amounts of Blaster with no difference. I tried a large C clamp torqued down to at least 200lbs without moving the bolt, I think the frame would have moved first.
          It's all buttoned up waiting for the rain to stop. The rubber stoppers in the two spare tire carriers are missing and I don't want a trunk full of water. Borton Volvo is searching for replacements. Probably could use some from an old 240?
          I am happy that the 164 runs so nicely. The shop that did my brakes will get to see the car again, both rear brakes leak fluid where the lines plug into the calipers(rebuilt). Bummer.

          Klaus
          --
          98 V70Rawd(108Kmi), 95 854T(88K mi), 75 164E(173K mi)







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