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torque specs for 87 B-150 LCA?
#587625 October 11th 2012 8:52 pm
Joined: Jul 2008
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emullen Offline OP
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I had to drop the LCA as I stupidly snapped off a shock absorber screw.

When I went to drill it out the drill skated to one side. Unable to drill it out, I drilled diagonally aiming at the center of the end of the screw for an easy out.

I managed to snap an easy out, so I have to drop the LCA to get it from the top side.

I haven't even got the bolt that passes through the bushing to budge yet.

I was debating getting an electric impact gun, but maybe that does not have enough torque.

(I was deflecting a pretty substantial breaker bar.)

Worst case I'll drive to a shop and have them get it loose, then bring it home to fully dismantle.

I'm reluctant to use heat as that will eat up the rest of the bushing life.

Any info greatly appreciated.

Thanks.


Re: torque specs for 87 B-150 LCA?
emullen #587630 October 11th 2012 9:49 pm
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The inner shaft of the bushing has teeth which bite into the cross member when tightened.


First I had a detail wire brush and hit all the mating surfaces of the lca bolt and nut. I then applied PB blaster every other day for two weeks before attempting removal. The Bolt came out easy.

The teeth on the inner bushing shaft were flattened. Even if the bushing was not deformed, I would not have used it with the flattened teeth.

Use a lot of penetrant. They say Acetone and ATF make the best penetrating fluid. Twist the nut not the bolt, Install a new LCA bushing, drill out the broke shock bolt and re tap for a bigger bolt.

Only fully tighten the LCA bolt fully with the Van's weight back on the suspension, and after a week or two,torque it again with as much leverage as you can lying on your back under the Van

Re: torque specs for 87 B-150 LCA?
emullen #587719 October 12th 2012 6:16 pm
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Getting broken bolts out is easy if you have a tig welder or if you are a good shot with a mig welder but the latter only would work with a larger size bolt. I just build up a mound of weld right on the broken bolt and drop a nut on the mound and weld the nut to it. the heat seems to help and you can take a wrench and loosen the bolt and take it out. it always works. stubborn bolts sometimes take a couple trys.


Cheers!

Been There, done that, Member of those....

Built for comfort not for speed angel....Well speed too !...smile

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