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#1 |
Never Ending Projects
Join Date: Jul 2006
Location: San Diego, CA
Posts: 3,836
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Torque values for trailing arms and U-bolts needed
Sorry for the repost from the Suspesion forum. I have not been able to get any answers to this so I thought here might be better.
Hey guys, I am redoing the suspension on my '68 and have pulled the everything from the rear. I searched this forum and the FAQ and did not find the torque values I needed. Does anyone have this info? I need the values for, Trailing arm bushing mounting bolt (big one that connect trailing arm to frame) U-bolts for holding the axle to the arms Thanks a bunch! ![]()
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. 1965 C10 Panel, ![]() 1968 Chevy C10, Long, Fleetside, Hot Rod Hauler http://67-72chevytrucks.com/vboard/s...d.php?t=313233 SOLD 1965 Chevy C10, Long, Fleetside, Hot Rod C10 http://67-72chevytrucks.com/vboard/s...d.php?t=415702 SOLD We were given two ears and one mouth for a reason... listen twice as much and speak half as often... |
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#2 |
Between Trucks...
Join Date: Mar 2002
Location: Los Angeles, CA.
Posts: 3,830
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Re: Torque values for trailing arms and U-bolts needed
My Chassis Service Manual for '69 says 140 ft/lbs for the pivot/bushing. 200 ft/lbs for the u-bolts.
It says torque the u-bolts first then put the weight on the suspension and then torque the bolts at the pivot/bushing.
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Beat it to fit, Paint it to match... ![]() Last edited by Sinister; 11-24-2008 at 02:31 PM. |
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#3 |
Msgt USAF Ret
![]() ![]() Join Date: Jan 2005
Location: Kalamazoo, Michigan
Posts: 8,714
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Re: Torque values for trailing arms and U-bolts needed
My Haynes manual calls the trailing arm bolt the control arm front pivot bolt and says
145 ft lbs. the U bolts are rear axle to control arm U bolts and are also 145 ft lbs.
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VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative. |
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#4 |
Dave's not here, man
Join Date: Jun 2004
Location: Winder, Georgia
Posts: 2,000
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Re: Torque values for trailing arms and U-bolts needed
I wish I had my manual with me, but I'm at work. The u-bolt torque is an ungodly amount; I want to say 230 ft lbs. My torque wrench didn't go that high so I did mine at 150 ft. lbs IIRC. I do remember it listed separate numbers depending on whether or not you had new u-bolts or re-used the old ones. Not sure one other, but two others beat me to it anyways.
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- 2014 VW Jetta - 2015 VW Jetta - 1966 Ford F-250 Last edited by dave2953; 11-24-2008 at 02:36 PM. |
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#5 |
Never Ending Projects
Join Date: Jul 2006
Location: San Diego, CA
Posts: 3,836
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Re: Torque values for trailing arms and U-bolts needed
Thanks guys. I know my impact had to work to get the bolts loose so I knew it was fairly high.
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. 1965 C10 Panel, ![]() 1968 Chevy C10, Long, Fleetside, Hot Rod Hauler http://67-72chevytrucks.com/vboard/s...d.php?t=313233 SOLD 1965 Chevy C10, Long, Fleetside, Hot Rod C10 http://67-72chevytrucks.com/vboard/s...d.php?t=415702 SOLD We were given two ears and one mouth for a reason... listen twice as much and speak half as often... |
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#6 |
Msgt USAF Ret
![]() ![]() Join Date: Jan 2005
Location: Kalamazoo, Michigan
Posts: 8,714
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Re: Torque values for trailing arms and U-bolts needed
My manual also said if you have the auxiliary springs the torque is 270 ft lbs. on the axle to control arm u bolt.
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VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative. |
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#7 |
Account Suspended
Join Date: Nov 2007
Location: FT STEWART GA
Posts: 509
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Re: Torque values for trailing arms and U-bolts needed
i allways use german specs goodntight
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#8 |
Senior Member
![]() Join Date: Aug 2008
Location: Cedar Park, Texas
Posts: 7,500
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Re: Torque values for trailing arms and U-bolts needed
take a 1/2" breaker bar with a 4 foot cheater pipe and tighten them til you think you might herniate yourself, then go 1/4 turn more. HAHA. sort of like adjusting the valves; "Tighten it down til it smokes, then back off half a turn."
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#9 | |
Never Ending Projects
Join Date: Jul 2006
Location: San Diego, CA
Posts: 3,836
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Re: Torque values for trailing arms and U-bolts needed
Quote:
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__________________
. 1965 C10 Panel, ![]() 1968 Chevy C10, Long, Fleetside, Hot Rod Hauler http://67-72chevytrucks.com/vboard/s...d.php?t=313233 SOLD 1965 Chevy C10, Long, Fleetside, Hot Rod C10 http://67-72chevytrucks.com/vboard/s...d.php?t=415702 SOLD We were given two ears and one mouth for a reason... listen twice as much and speak half as often... |
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#10 |
Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,936
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Re: Torque values for trailing arms and U-bolts needed
Here is what I have.
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1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 ![]() Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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#11 |
But Found Her 25yrs Later!
![]() Join Date: Oct 2010
Location: Oregon City, Oregon
Posts: 10,525
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Re: Torque values for trailing arms and U-bolts needed
I've read in a couple other places that you should re-torque them after about 100 miles.
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I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035 |
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#12 | |
But Found Her 25yrs Later!
![]() Join Date: Oct 2010
Location: Oregon City, Oregon
Posts: 10,525
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Re: Torque values for trailing arms and U-bolts needed
Quote:
http://www.eatonsprings.com/ubolttorques.htm
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I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035 Last edited by LostMy65; 02-05-2011 at 12:56 PM. |
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#13 |
But Found Her 25yrs Later!
![]() Join Date: Oct 2010
Location: Oregon City, Oregon
Posts: 10,525
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Re: Torque values for trailing arms and U-bolts needed
From www.springworks.com
3/8" - 30 ft. lbs 7/16" - 45 ft. lbs 1/2" - 65 ft. lbs 9/16" - 95 ft. lbs 5/8" - 125 ft. lbs 3/4" - 225 ft. lbs 7/8" - 325 ft. lbs 1" - 625 ft. lbs Even more interesting info on U-Bolts & Springs here: http://www.springworks.com/faq.html#coilq10
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I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035 |
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#14 |
Account Suspended
Join Date: Mar 2007
Location: san bernardino ca. everywhere
Posts: 3,938
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Re: Torque values for trailing arms and U-bolts needed
i just did mine tonight but did not use a torque wrench or any torque setting. i just tightened them down as tight as i could get them with an 18" long 1/2" drive breaker bar. hope that will be good enough, will recheck them later after i get a few miles put back on her.
Last edited by project 67 sub; 02-06-2011 at 06:48 AM. |
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