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Rear axle nut is one tuff mutha!

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Old 02-27-2011, 09:50 PM
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NoVector
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Default Rear axle nut is one tuff *****!

That rear axle nut is one tuff mother to remove! You can see how many 1/2'-drive extenders I snapped. Too many rum/cokes last night and a lifetime of Wheaties for breakfast I guess… I bought a 32mm socket and 3/4" ratchet and extender today and it easily came off with me putting my full weight on the cheater pipe. Anyway, for those thinking about doing this, take it from me and start with 3/4" and save on your inventory of 1/2" stuff. Surprisingly, the cheese-head bolts on the other end of the shaft came off pretty easy—although I sprayed them with PBR and let it set over night.

BTW – I don’t have a torque wrench for 250+ pounds. Is it safe to say standing on the pipe (in reverse) is enough torque when tightening it?

Last edited by NoVector; 09-09-2018 at 12:47 AM.
Old 02-27-2011, 09:51 PM
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SeanR
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Been there and done that and your advice is spot on.
Old 02-27-2011, 10:06 PM
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Gregg K
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That's what impact wrenches are for. I learned that from removing nuts on a commercial vehicle I own. A ten foot cheater bar would barely do the job. Finally I ended up just buying a cheap impact wrench. Live and learn.

250 ft lbf is quite easy to apply with a wrench. What you saw was probably far higher than that due to it being "seasoned".
Old 02-27-2011, 10:10 PM
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928Myles
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If you know your weight and stand on the cheater bar the right distance from the nut then it is easy to generate the correct torque +/-. EG: If you are 125lb and stand 2 ft from the nut centre then you generate 250ft-lbs of torque. Adjust to apply to your situation ;-)

Myles
Old 02-27-2011, 10:16 PM
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Lizard928
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Use an impact gun. I have a 550 ft lbs 1/2" drive gun which works nice.
Sometimes it takes a bit, but they always come off. I also got a 3/4" T bar with the right socket for popping them and the crank bolt off. Havent broken one yet.
Old 02-27-2011, 10:47 PM
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Bill Ball
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You broke a lot of bits before you went to 3/4" drive.

This inexpensive Harbor Freight set has proven to be able to take a beating.
http://www.harborfreight.com/cpi/cta...temnumber=5494
Old 02-27-2011, 10:51 PM
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WallyP

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Rear axle nut tightening spec is 339 lb/ft - I promise you that it takes more than that to loosen it.
Old 02-27-2011, 10:59 PM
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NoVector
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Originally Posted by Gregg K
That's what impact wrenches are for. I learned that from removing nuts on a commercial vehicle I own. A ten foot cheater bar would barely do the job. Finally I ended up just buying a cheap impact wrench. Live and learn.

250 ft lbf is quite easy to apply with a wrench. What you saw was probably far higher than that due to it being "seasoned".

I should have mentioned that I also have an impact wrench and I did try that for a while. I only have a 2hp/4 gal "pancake" compressor--but after about 10 minutes of scrweing around, it wasn't getting me anywhere.

Funny, but after using 3/4" tools, my testosterone level felt higher
Old 02-27-2011, 11:02 PM
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Gregg K
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I love your persistence. That really is a nice collection of broken tools.
Old 02-27-2011, 11:03 PM
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NoVector
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Originally Posted by 928Myles
If you know your weight and stand on the cheater bar the right distance from the nut then it is easy to generate the correct torque +/-. EG: If you are 125lb and stand 2 ft from the nut centre then you generate 250ft-lbs of torque. Adjust to apply to your situation ;-)

Myles
Myles - Great, thank you! Of all the tools I could ever justify purchasing, a 250 lbs torque wrench just isn't one of them. Thanks again / Bruce
Old 02-27-2011, 11:03 PM
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Dave928S
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Originally Posted by WallyP
Rear axle nut tightening spec is 339 lb/ft - I promise you that it takes more than that to loosen it.
Absolutely !!

I used a 5 foot bar and bent that!!! ... then an impact gun with a 3/4 impact socket got them undone first time.
Old 02-27-2011, 11:04 PM
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Use the car's weight. Fit a wrench on the nut (shortest possible extension), and jack the end of the arm - will loosen off softly. You may need to roll the car or reposition the socket to get leverage again if the first losening doesnt get it loos enough for hand work.
Tighetning is of course a different thing.
jp 83 Euro S AT 53k BTDT
Old 02-27-2011, 11:06 PM
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blown 87
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I am not a fan of using a impact on a bearing nut.

Get the right tools for the job, both off and on.
Old 02-27-2011, 11:06 PM
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NoVector
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Originally Posted by Bill Ball
You broke a lot of bits before you went to 3/4" drive.

This inexpensive Harbor Freight set has proven to be able to take a beating.
http://www.harborfreight.com/cpi/cta...temnumber=5494
Thanks, Bill. That is an excellent price! It's about exactly what I paid at Northern Tool for just the ratchet and socket--doh!
Old 02-27-2011, 11:08 PM
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terry gt
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I used a 3/4 impact gun , And a impact socket. Works on the crank pully as well , no sweat no blood .


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