control arm to spindle

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kwl82
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control arm to spindle

Post by kwl82 » Sat Mar 03, 2018 7:20 pm

I understand trial and error but I seem to having more luck with errors. Next problem to tackle. I'm installing new front suspension. If you want a pic of a really bad ball joint I've got some :D Anyway, im following Richrd Ridge mostly excellent instructions and I'm not sure about the use of the crowfoot wrench to attach the upper and lower ball joints to the spindle. The nut is 22mm, so do I use a 22mm crowfoot wrench right on the nut? I don't see how it prevents the joint from spinning. I'm guessing this would be obvious if I had one. Trying to avoid another trip to the store tho. Thanks in advance
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Re: control arm to spindle

Post by fp55scca » Sun Mar 04, 2018 11:15 am

--Kevin, in order to tighten the ball joints, you'll need pressure (weight) on the control arms. This can usually be accomplished by placing a jack under the lower control arm, and lifting until the full weight of that corner of the car is on the jack.

--Any 22mm wrench or standard socket will usually due. I prefer a racheting box-end wrench in order to make quick pulls. This technique will usually prevent the ball joint from spinning. In some cases, you may have to solicit a volunteer to sit on the fender, in addition to the jack, to achieve enough force on the ball joints to tighten the nuts.
Jim Scurria
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1972 Fiat 124 Spider
1971 Spider - SCCA FP-24
1974 Fiat 124 Spider
kwl82
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Re: control arm to spindle

Post by kwl82 » Sun Mar 04, 2018 2:19 pm

Thanks Jim, the instructions say to install both control arms to the spindle, torque to 72lbs and then install to lower crossmember. That's where I got stuck. Should I install upper and lower arms loosely to spindle,with spring in,then apply pressure with jack to tighten ball joint nuts then? The shop manual says installation is reverse of removal.not that helpful :?
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vandor
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Re: control arm to spindle

Post by vandor » Sun Mar 04, 2018 7:52 pm

kwl82 wrote:
Sun Mar 04, 2018 2:19 pm
Should I install upper and lower arms loosely to spindle,with spring in,then apply pressure with jack to tighten ball joint nuts then?
Yes.
I never needed a crows foot, I just use a regular wrench.
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bartigue
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Re: control arm to spindle

Post by bartigue » Sun Mar 04, 2018 10:17 pm

I find the early shop manual instructions and pictures are much clearer than the later ones. I’ve also never used a specialty tool for this work except the ball joint fork.
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Brad Artigue
1982 Spider 2000
I've restored, worked on, sold, bartered, and bled for:
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kwl82
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Re: control arm to spindle

Post by kwl82 » Sun Mar 04, 2018 10:36 pm

I didnt see the need for crowfoot either. what I am wondering is how to prevent the stud of the ball joint from spinning while I tighten the nut before its on the car. Thought maybe the crowfoot held it in place somehow that I didnt think of. I have new arms from AR and trying to assemble top and bottom to spindle before attaching to cross member. Csaba, you might be getting a call tommorow. btw, adding grease didn't do much for this :D
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bartigue
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Re: control arm to spindle

Post by bartigue » Mon Mar 05, 2018 6:35 am

New ball joints actually have a good bit of tension - I’ve found that as you tighten them they tend to stay put. If they start to spin I tap the bottom with a hammer (gently) and it tightens up enough for a few more turns of the nut.
-----------------------------------------------------------
Brad Artigue
1982 Spider 2000
I've restored, worked on, sold, bartered, and bled for:
1970, 1979, 1980, 1981, 1982 124 Spiders -- 1969, 1970 850 Spiders -- 77 X1/9
http://fiat.artigue.com
spider2081
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Re: control arm to spindle

Post by spider2081 » Mon Mar 05, 2018 8:00 am

Another approach is to install the new ball joint or tie rod end with the original old nut. This seats the taper in place. Once the taper is seated remove the original nut and install the new lock nut. This has worked pretty well for me.
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kmead
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Re: control arm to spindle

Post by kmead » Fri Mar 09, 2018 9:11 pm

To seat a ball joint or tie rod end, I use a pair of welding vice grips from the bottom of the a arm onto the upright to compress the taper and then the nut usually goes on just fine. I have had to keep the vice grip on there and then let the nut displace the leg of the vice grip to the side as it goes down the thread.

I use the same vice grip to compress pistons into calipers (front ones anyway).
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