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Certified Pre-Owned
Join Date: Aug 2002
Location: Nanny State
Posts: 3,132
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Hi-
So I am currently replacing the ball joints as part of a suspension overhall and I ran into the old frozen castellated nut problem. One of the ball joint nuts came loose pretty easy with a little heat and a big breaker bar, but the other one just wasn't gonna move. Here's a simple tip that I bet is even easier than the carbide cutter in the dremel trick. I got the nut off in less than 5 minutes- no sweat. This will destroy the nut and the ball joint, but if you are replacing the parts anyway than it doesn't matter. You need a cordless drill and a few bits. Start with about a 3/32" bit and drill a hole right on the threads between the castellated nut and the ball joint. Start in one of the grooves where the tooth of the ball joint tool would sit. Drill down to the A-arm. Use a piece of masking tape wrapped around the bit as a depth gauge so you don't drill too far. Increase the bits successively in size until you breech the o.d. of the nut. Once you have breeched the o.d. of the nut, stick a big screwdriver in the slot you formed and give it a pop- this should do the trick. If you are careful, you won't even make a mark on the A-arm. Piece of cake. If drilling is a little tough, add some WD40 or light oil to the bit to act as a cutting oil. Good luck! BG
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'84 Carrera Coupe |
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Author of "101 Projects"
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Hmm, I have a better suggestion - simply cut the nut in half with a carbon-reinforced cut-off tool and a Dremmel. Mine came off in about 1 minute. Drilling will work too, but you might go through a bunch of drill bits (they are not really designed to drill like this).
-Wayne
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Wayne R. Dempsey, Founder, Pelican Parts Inc., and Author of: 101 Projects for Your BMW 3-Series • 101 Projects for Your Porsche 911 • How to Rebuild & Modify Porsche 911 Engines • 101 Projects for Your Porsche Boxster & Cayman • 101 Projects for Your Porsche 996 / 997 • SPEED READ: Porsche 911 Check out our new site: Dempsey Motorsports |
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Senior Member
Join Date: Jun 2000
Location: N. Phoenix AZ USA
Posts: 28,969
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BG and Wayne,
I assume that you guys have the special socket that fits the nut? Where can I get one to reinstall the ball joints? Noticed this socket on the website but it does not look like it has the tits that go in the nut. http://www.pelicanparts.com/catalog/shopcart/DWKS/POR_DWKS_toolsL_main.htm Thx, Joe
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2021 Subaru Legacy, 2002 Dodge Ram 2500 Cummins (the workhorse), 1992 Jaguar XJ S-3 V-12 VDP (one of only 100 examples made), 1969 Jaguar XJ (been in the family since new), 1985 911 Targa backdated to 1973 RS specs with a 3.6 shoehorned in the back, 1959 Austin Healey Sprite (former SCCA H-Prod), 1995 BMW R1100RSL, 1971 & '72 BMW R75/5 "Toaster," Ural Tourist w/sidecar, 1949 Aeronca Sedan / QB |
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Certified Pre-Owned
Join Date: Aug 2002
Location: Nanny State
Posts: 3,132
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Obviously the cutoff wheel will work, but I didn't have one on hand. The drilling did no damage to the bits and was so easy I thought I'd post.
Wayne, your book says the final nut torque is 33.1 ft. lbs (ball joint to a-arm). The detail sheet that came with my new Sway-Away bars says its 108 ft. lbs. I am assuming the lower value is correct. Care to confirm? Check for the ball joint tool here : (look under ball join tools) http://www.pelicanparts.com/catalog/shopcart/911M/por_911M_suspen_main.htm
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'84 Carrera Coupe |
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Schleprock
Join Date: Sep 2000
Location: Frankfort IL USA
Posts: 16,639
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I think that 33 ft-lb value you have is for the castle nut on the tie rod at the steering knuckle. That's what's stated in the 84-87 spec. book.
The torque spec. for the slotted nut on the ball joint is 250 Nm = 184 ft-lb
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Kevin L '86 Carrera "Larry" |
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Registered
Join Date: Apr 2009
Location: Cape Vincent, NY
Posts: 841
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+1 on the dremel. Wonderful tool for the garage. Does just about everything, like the old commercial they had, except hammer a nail (well, you could hammer a nail but it would kill the tool swinging the housing against the nail). Get the flex shaft version and you can get into tight spaces.
Pickle forks are a PITA tho. On most cars the control arm is hefty enough that you can smack it with a big hammer one good blow while prying down on the joint, popping the ball joint out from the shock vibration of the smack. Have not done this on a P-car, never had to replace the joint. Be warned, some cars this will not work on as the form of the arm is wrong. In that case you can get a pickle fork that fits in an air hammer Keep the force low, it won't take much.
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1968 911S "Leona" Air goes in and out, blood goes round and round, any variation on this is a bad thing. |
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Registered
Join Date: Jan 2009
Location: Marietta, Ga (Atlanta)
Posts: 2,970
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Just removed a pair if ball joints on my '80SC last week. Pondered for a while, got the 18" pipe wrench, a little grunting, and Voila!, they spun right off!
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'80SC Widebody 3.6 transplant Anthracite "The Rocket" Long gone but still miss them all: '77 911 Targa, '72 BMW 3.0CS Coupe(finest car I ever had!) '71 911T Coupe White, '70 911T Coupe Blue '68 911 Coupe Orange, '68 911L Soft Window Targa |
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Home of the Whopper
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Hmm, I have never had a problem with the ball joint tool, and I have done dozens on early cars. I use a ball joint tool on an impact and use a jack to apply pressure. make sure everything is square, zap the gun a few times and they usually spin right off. Sometimes I hit with WD and heat a few times, but I have always been able to get them off without cutting.
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1968 912 coupe 1971 911E Targa rustbucket 1972 914 1.7 1987 924S |
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Registered
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I used an air hammer. Ground an old punch tool down to the shape needed to fit the ears on the nut. Took about a two second burst to get it spinning.
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Tim
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Dremel! No contest
(I haven't got a air hammer so couldn't compare)
Last edited by tvanbroekhoven; 05-08-2010 at 09:53 AM.. |
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Registered
Join Date: Jun 2004
Location: Los Alamos, NM
Posts: 390
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Joe,
The correct tool is PEL-TOL-P210. The teeth are on the inside.
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Scott Wilburn 1988 911 Carrera 3.4 L 1998 M3 1984 308 QV |
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Registered
Join Date: Oct 2004
Posts: 15,612
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Yup. I used a 24" pipe wrench and an old galavanized fence post. The balljoint socket was not even damaged, so I re-used it.
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