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01-11-2005, 08:48 PM
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#1 |
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love my truck
Join Date: May 2001
Location: aylmer QC
Posts: 648
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U bolts how tight
Question1- I just instaled new U bolts on rear en how tight should it be?
Question2- bottom of nut is flush with end of u bolt is that ok? |
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01-11-2005, 08:51 PM
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#2 |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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#1 While i am sure there is an actual torque reading, If you have a quality 1/2 inch drive impact, that should be enough. Some lock tight is a good idea too.
#2, that is the minimum that you would want...but it is perfectly fine. |
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01-11-2005, 08:56 PM
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#3 |
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love my truck
Join Date: May 2001
Location: aylmer QC
Posts: 648
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ty andy you da man
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01-11-2005, 09:30 PM
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#4 |
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1971 C20 Custom Camper
Join Date: Mar 2003
Location: Ames/Shenandoah, IA
Posts: 1,435
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I think it was somewhere around 110 ft-lbs on the ones I used on the 65 last summer. It'll be close to that, give or take 10 ft-lbs.
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'71 Chevy C20 Custom Camper, 454, TH400 '97 GMC K1500 5.7L |
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01-11-2005, 09:47 PM
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#5 |
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Senior Member
 Join Date: Mar 2003
Location: Colfax-California
Posts: 8,599
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5/8'' u-bolts ---150lbs, 9/16'' bolts 110lbs. I did a small block lift on my 4x tow truck in the rear. The guy that bent the bolts for me told me 180. But the bolts were 14'' long.
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01-11-2005, 10:51 PM
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#6 |
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Registered User
Join Date: Nov 2000
Location: Carver County, Minnesota, USA
Posts: 626
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Crank on them with a breaker bar. You ain't going to break them and you ain't going to over tighten them by hand either. Pound on the u-bolt as you tighten them down.
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72 Chev C-10 90% restored (former AZ truck) ... 71 Chev K-20 Cheyenne my vacation crusier... 72 Chev C-10 Now retired and striped after many faithful miles... 72 GMC 1500 Retired to the junk yard after bought new in '71... |
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01-12-2005, 12:55 AM
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#7 |
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Senior Member
Join Date: Sep 2004
Location: CANADA
Posts: 1,681
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after you drive it for a while.retighten the u-bolts because they will strech a little.I drive the truck for 100-150 miles and retighten them.
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01-12-2005, 02:00 AM
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#8 |
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Registered User
Join Date: Dec 1999
Location: san diego, ca
Posts: 546
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I have a 4x4 so they take more of a beating but I tightened mine every few months after I put the rear end in. The factory service manual has the spec in the back.
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'70 K-20 San Diego, CA |
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01-12-2005, 02:21 AM
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#9 |
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Senior Member
Join Date: Dec 1999
Location: Southern California
Posts: 2,855
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As my grampa used to say "tighten til it wont budge then go a half a turn"
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Richard 1972 K10 Custom Deluxe SWB Fleetside My build https://67-72chevytrucks.com/vboard/...d.php?t=800746 |
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