harrisonm
Well-Known Member
Agreed. Torque settings are easily available. Why do people feel the need to set their impact guns on full power and slam them on at 250 ft lbs. There have been times when I wish I had @Dana67Dart 's 6 foot fence post.
Dang U-bolts!
- Thread starter mopower440
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dr dodge
Active Member
production, and pre engineered stretch w/o needing tightened, on a production line where the lazy guy took less than a minute to "hit the bolts" with an impact that didn't control torque so the moron didn't crush the axle to start
Because they don't know. How many guys do you see on here asking why something effed up and they don't even have a service manual? They don't know, so they assume and end up in trouble.
ahhh... the U-bolt discourse.
they're the new green bearings... and just in time for camshaft hole oiling timing season!
an early x-mas for everybody!
they're the new green bearings... and just in time for camshaft hole oiling timing season!
an early x-mas for everybody!
If you wire brush or outside clean those nuts very well you should discover a tiny square indention in 1 hex side. That indention went all the way though to distort the thread inside the nut.
Why did they score these nuts? No lockwashers or other means of retention. They were torqued to only 45 ft.lbs. and they stayed put. All of this is why this hardware is not to be reused.
Why did they score these nuts? No lockwashers or other means of retention. They were torqued to only 45 ft.lbs. and they stayed put. All of this is why this hardware is not to be reused.
340six
King Of Bling
I am still worried about weathering the Fram filters storm, and now these new problems show up to be pondered too.
mopower440
Well-Known Member
I actually had a fram filter bite my a$$
Before you take them off by which ever method measure the total length around the outside so you know what you want. I changed hundreds of u bolts and springs on medium and heavy trucks. Measured the length and fire wrenched them off. measure the diameter and go to a truck spring shop and have them bend them up. Probably not factory but easy.
mopowers
Well-Known Member
To add fuel to the fire - Calvert recommends 65-70 ft-lbs with their 1/2" round u-bolts. Those poor axle housings. Oh the humanity... 
cudamark
Well-Known Member
A die or thread chaser is the method I use too. I start by hitting the exposed threads with a wire brush, then soak with penetrating oil before running the die on. Back and forth a few times with the nut and more penetrating oil and they'll usually some right off. With a few "snow belt" cars I stripped that had 8 3/4 rears, I had to cut the nuts off. The 7 1/4 cars, I just torched off the U-bolts as they were not worth the effort.
Quick Pro Tip: if you don't have a thread chaser or if you have a die you can't put a socket on. Take a nut of similar size clamp it in a vise and hacksaw one side to the threads. You now a have a thread chaser even HF would be proud of.
The housing was fine otherwise Just crushed where and only where the round u bolt left an impression.
We can argue this all day long. I'm going to ALWAYS use what the engineers designed over what anyone else says. AND I will ALWAYS torque to spec not "Oh that feels right"
you all can do what you want.
If they are 1/4" thick round tubing like on Dana 60 or the like they can handle it.
mopowers
Well-Known Member
Absolutely. Not sure what all the hubbub's about.
1/4 inch? I don't think so.
They are.
OK 5/16"
But see, all this incessant arguing is a moot point to ME since I have a heavy duty Ford 9" truck rear end narrowed to go under Vixen. lol
Oh and if you're wondering, the Ford 9" truck housings have .375" thick axle tubes. lol
If I am correct, we dont even know what rear end we are talking about. If I had RRR's money, I'd put a 9 inch in everything.
PHHHHHHTTTTTTTT! I have under 1000 bucks in this thing. Total with a new gear set and a reman Track Lock. Plus, it took the better part of three years. lol
TheTieWrapKid
Well-Known Member
I couldn't get the u bolt nuts off the Duster with my air impact gun. I used penetrating oil spray and wire brush and muscled them off with regular old wrenches. Then chased the threads on u bolts and nuts. Put it back together with new leaf springs hand tightened to what felt right with torgue specs at least in mind. Oh yeh I bought a new higher torque impact gun after that !
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