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Old 10-20-2013, 08:05 PM   #1
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F53 U Bolt Torque

Hi everyone,
Looking for the front and rear axle springs u bolt torque for my 99 F53 18,000# chassis. Have searched the forum and net, no luck. Have found the recommended torque table for various size u bolt, would rather have the Ford spec though.

Thanks,
Chuck
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Old 10-20-2013, 08:11 PM   #2
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Had an alignment done on my Dolphin F53, a couple of weeks before trading it in .
Shop told me to get the U-bolts re-torqued within a week to 250- 275 ftlbs.
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Old 10-20-2013, 09:05 PM   #3
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That's higher then I thought it would for the front. The charts I have found only show 177 ft lb for 5/8" grade 8. Was yours an early F53?

Thanks,
Chuck
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Old 10-20-2013, 09:26 PM   #4
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1999 chassis. The tech acctually started at 300lbs then talked his way down to 250ftlbs, with a brief stop at 275ftlbs !
Mabe you should hold out for official Ford specs.
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Old 10-21-2013, 06:40 AM   #5
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Here is the 1999 suspension torque tables.
Front:





Rear:

/
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Old 10-21-2013, 09:13 AM   #6
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Thank you Bill.

96 Wideglide, looks like the tech was on the right track.

Chuck
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Old 10-21-2013, 05:22 PM   #7
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Those U-bolts had a high torque. I used a real long 1/2 wrench and I think it was about maxed out. BTW, mine were not near torque when I started. Lousy shop job.
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Old 10-21-2013, 05:43 PM   #8
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Yeah, I have a long 1/2" that goes to 250, I'll have to break out my 3/4" drive that goes to 500.

Chuck
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Old 10-23-2020, 08:16 AM   #9
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Thanks for this discussion. I have a 2003 Newmar on a 2002 F53 chassis. I'm removing two ubolt nuts to mount a plate for a steering stabilizer. I was wondering what to retorque them to. Thanks. I'll aim for 250 ft lbs.
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Old 10-23-2020, 11:54 AM   #10
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On the 2006, the Ford service manual lists torque at 260 Ft lbs
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Old 10-23-2020, 07:01 PM   #11
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FWIW, Roadmaster's rear sway bar for my 2019 22,000 chassis says to torque the spring U-bolt nuts to 300 ft lbs so 250-300 is in that ballpark.

https://www.roadmasterinc.com/pdfinst/1139-149.pdf

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Old 12-12-2020, 01:48 PM   #12
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1. Got this from Hemborg Ford Norco, CA
2. U-bolt p/n's including hrdware and prices
Ubolt P/N f81z5455aa $35ea
Nut P/N d3hz5456a $8ea
Washer P/N 44882s2 $4ea
helms publication 800-782-4356



Trust and verify!
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Old 12-14-2020, 10:58 AM   #13
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Been there, done that recently. I bought a used 3/4" drive torque wrench just for that job, then was afraid to pull that hard on it. (250 ft lbs) I took the wrench and my rig up to my chassis mechanic and asked him to do the pull himself. $10.00 later I was satisfied that my used wrench worked and that the torque was right.

P.S. Love the steering stabilizer! And also the Sumo Shocks, if you're also going that route.
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Old 09-02-2021, 02:20 PM   #14
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Quote:
Originally Posted by Aharmmms View Post
12-12-2020
1. Got this from Hemborg Ford Norco, CA
2. U-bolt p/n's including hrdware and prices
Ubolt P/N f81z5455aa $35ea
Nut P/N d3hz5456a $8ea
Washer P/N 44882s2 $4ea
helms publication 800-782-4356



Trust and verify!
These are front UBolts not rear....as i just found out :-(
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