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Question about LCA shaft finish #2444313
01/31/18 10:55 PM
01/31/18 10:55 PM
Joined: Oct 2004
Posts: 1,074
So Cal, USA
Fab64 Offline OP
super stock
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Hi all,

I'm rebuilding the front suspension on my '71 Satellite, so I took the lower control arms in to have the bushings and shafts removed, and to have the arms glass-bead blasted. I stupidly neglected to tell the guy not to blast the shafts themselves. Now the finish on them is rough, not the smooth "bearing-like" finish they had before blasting. Is this a problem? I'm thinking the rough finish might eat thru the rubber bushing faster? Should I find new ones? As always, thanks for any opinions.

Roger

Re: Question about LCA shaft finish [Re: Fab64] #2444330
01/31/18 11:14 PM
01/31/18 11:14 PM
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Morristown Tn.
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71birdJ68 Offline
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If you talking about the pivot pin, they don't touch any of the rubber, cause there is a inner sleeve in the bushing. But, maybe treat them with a rust preventative.

Re: Question about LCA shaft finish [Re: 71birdJ68] #2444594
02/01/18 01:24 PM
02/01/18 01:24 PM
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So Cal, USA
Fab64 Offline OP
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Great, thanks!

Re: Question about LCA shaft finish [Re: Fab64] #2444700
02/01/18 03:50 PM
02/01/18 03:50 PM
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Bend,OR USA
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The tapered part of the pin slides into the K member and the straight part is press into the bushing.
The nut and cotter pin are torque to prevent the pin from rotating making the torsion bar twist and act like a spring to control up and down movement when moving the car down the road work


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Question about LCA shaft finish [Re: Fab64] #2444914
02/01/18 10:58 PM
02/01/18 10:58 PM
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northwest USA
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This part is usually plated so it will resist rust, now it will want to rust up so it needs your help to prevent that.

Re: Question about LCA shaft finish [Re: Fab64] #2444932
02/01/18 11:31 PM
02/01/18 11:31 PM
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New Mexico
UCUDANT Offline
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For my lower control arms I didn't blast mine. They were in good shape and I soaked them in evaporust and then coated them in Eastwood's Exo Armor.

Since they are a stamped steel they still have a smooth finish and blasting them would have given them an etched look. Allot of guys paint them cast gray, but they aren't a cast part?

For the cosmoline I used Krylon battery protector spray

Pass lower control arm coated.jpgCosmoline lower control arm.png
Re: Question about LCA shaft finish [Re: Fab64] #2444938
02/01/18 11:37 PM
02/01/18 11:37 PM
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New Mexico
UCUDANT Offline
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Removing a lower control arm bushing outer shell made easy, if you run a 1-3/8 tap into the shell of the bushing after you press out the pin and remove the rubber you can run the tap into the control arm bushing outer shell and press the tap and shell out just like you did the pin. Thanks to the For A bodies only member who shared this trick, and my friend George who told me.

Lower control arm bushing removal.png
Re: Question about LCA shaft finish [Re: UCUDANT] #2444944
02/01/18 11:45 PM
02/01/18 11:45 PM
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Rancho Cordova, California (Sa...
hemi71x Offline
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Originally Posted By UCUDANT
Removing a lower control arm bushing outer shell made easy, if you run a 1-3/8 tap into the shell of the bushing after you press out the pin and remove the rubber you can run the tap into the control arm bushing outer shell and press the tap and shell out just like you did the pin. Thanks to the For A bodies only member who shared this trick, and my friend George who told me.



UCUDANT
That would be me.
Glad that "trick" worked out for you.
I have heard that lots of enthusiasts have benefited by doing it that way, even though there is a welding in a washer method, too.
Jim V.
hemi71x
thumbs



Last edited by hemi71x; 02/02/18 01:16 AM.

RF-4C Phantom 69-370 Zweibrucken, Germany

Re: Question about LCA shaft finish [Re: Fab64] #2444945
02/01/18 11:46 PM
02/01/18 11:46 PM
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Michigan
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The tap is not a trick - its in the older service manuals.

Re: Question about LCA shaft finish [Re: A727Tflite] #2444950
02/01/18 11:55 PM
02/01/18 11:55 PM
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Rancho Cordova, California (Sa...
hemi71x Offline
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Originally Posted By Transman
The tap is not a trick - its in the older service manuals.


Yes, that's true, but how many of us have a 1962 maintenance manual, to even know of that method in regards to that bushing shell removal.


RF-4C Phantom 69-370 Zweibrucken, Germany

Re: Question about LCA shaft finish [Re: hemi71x] #2444953
02/01/18 11:59 PM
02/01/18 11:59 PM
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chicagoland,usa
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And how many of us have a tap that large laying around....

Re: Question about LCA shaft finish [Re: buildanother] #2444955
02/02/18 12:05 AM
02/02/18 12:05 AM
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New Mexico
UCUDANT Offline
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Originally Posted By buildanother
And how many of us have a tap that large laying around....


I bought one off ebay, I have rebuilt a few front ends and removing the lower control arm bushing from the arm is the hardest part, and it was soooooo worth a few bucks to buy the tap. I helped remove Georges bushings and he found the tap idea after, I was very thankful.

Re: Question about LCA shaft finish [Re: buildanother] #2444956
02/02/18 12:07 AM
02/02/18 12:07 AM
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Rancho Cordova, California (Sa...
hemi71x Offline
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Originally Posted By buildanother
And how many of us have a tap that large laying around....


lol
That's a good point, too.
Guess a person goes out and purchases one to get the job done, if he want's to do it that way.
I watch ebay, and they show up for as little as $15.00, sometimes.

https://www.ebay.com/itm/GREENFIELD-GTD-1-3-8-6-NC-HAND-TAP/311459883236?

Here's an $18.00 one.
That's a good price, and it says two of them are available, if anyone here is interested.

Last edited by hemi71x; 02/02/18 01:11 AM.

RF-4C Phantom 69-370 Zweibrucken, Germany

Re: Question about LCA shaft finish [Re: Fab64] #2444957
02/02/18 12:10 AM
02/02/18 12:10 AM
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I take an air chisel and push the top step in to the bushing ID after laying a thick washer inside that sleeve. Put it in a press and push on the washer and out the bushing comes. I like the tap as it is faster but haven't come across a deal on one yet.

And who has a 62 manual - just us old guys that have been working on these cars for over 50 years. shruggy

Last edited by Transman; 02/02/18 12:28 AM.
Re: Question about LCA shaft finish [Re: Fab64] #2444975
02/02/18 12:54 AM
02/02/18 12:54 AM
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Stanton Offline
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Quote:
This part is usually plated so it will resist rust, now it will want to rust up so it needs your help to prevent that.


False. The pivot pin is bare metal. And I wouldn't worry about it being blasted.

Re: Question about LCA shaft finish [Re: Fab64] #2445065
02/02/18 04:59 AM
02/02/18 04:59 AM
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Oh really, so they just let them rust?

Re: Question about LCA shaft finish [Re: Fab64] #2445144
02/02/18 12:25 PM
02/02/18 12:25 PM
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They let the whole danged front end rust, most of it is coated to not rust on the shelf, but will on the road. Cosmoline doesn't hold up all that well in use.


They say there are no such thing as a stupid question.
They say there is always the exception that proves the rule.
Don't be the exception.
Re: Question about LCA shaft finish [Re: Fab64] #2445229
02/02/18 03:34 PM
02/02/18 03:34 PM
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Clinton, NJ
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I just put my front end together. Also soaked the shaft in evaporust to clean up. I coated the shaft with Boeshield T9 as I pressed into the new bushing to aid in assembly and to protect. Then I lightly coated the part that goes into the k-frame and the k-frame itself with a layer of grease. Once finally torqued down and in the car, I will then coat the exposed threads and nut with Boeshield again.

I also did the Krylon battery protector deal. I folded over the masking tape to make it look a little more like a soft dip line, then a hard spray line at the end.

unnamed (2).jpg
Re: Question about LCA shaft finish [Re: njmopar] #2445438
02/03/18 12:34 AM
02/03/18 12:34 AM
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New Mexico
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Originally Posted By njmopar
I just put my front end together. Also soaked the shaft in evaporust to clean up. I coated the shaft with Boeshield T9 as I pressed into the new bushing to aid in assembly and to protect. Then I lightly coated the part that goes into the k-frame and the k-frame itself with a layer of grease. Once finally torqued down and in the car, I will then coat the exposed threads and nut with Boeshield again.

I also did the Krylon battery protector deal. I folded over the masking tape to make it look a little more like a soft dip line, then a hard spray line at the end.



Here you can see my original cosmoline line

lower control arms.pnglower control arms Cosmoline line.png
Re: Question about LCA shaft finish [Re: Fab64] #2445443
02/03/18 12:55 AM
02/03/18 12:55 AM
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Michigan
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The pivot pin is bare metal (not painted) but it has some form of protection on it - black oxide, phosphate, something. I just did a 67 Plymouth front end that came off a Michigan car with 90k miles on it - no rust. I taped the pivot pins off before having everything sandblasted. Whatever coating it is it has the looked of a heat treated part - not black but darker than plain metal. My 62 and my 69 have the same appearance on these pivots.

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