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01-11-2025, 06:03 PM
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#1
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Site Team
Join Date: Aug 2007
Location: Omaha
Posts: 6,815
M.O.C. #7560
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U Bolt Torque
Having the rear axle replaced on our Monte and want to know if I will need to check the torque on the U Bolt nuts before heading out for our snowbird adventure? If so, what is the torque on these nuts suppose to be and do I need to check the torque on them like I need to do on the wheels at the 25, 50, 100 mile traveling? Weight off the wheels or axles for torquing?
Thanks in advance for any replies!
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01-11-2025, 06:41 PM
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#2
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Site Team
Join Date: Oct 2005
Location: Carmichael - CA
Posts: 7,937
M.O.C. #4831
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You want the weight on the wheels and springs when you torque. Montana torques them when the install the axles. Unfortunately, the rig is upside down at that time and the weight of the coach is missing. Pretty every RV at a dealers lots has under torqued U bolts.
I am looking for the spec. I seem to remember something like 60 or 70 ft./lb. Unlike the wheels, it is a one and done task. Hopefully you have someone replacing the axle that knows this stuff.
__________________
Carl (n Susan)
There is more to life than fuel mileage.
2012 Montana 3700RL Big Sky Package towed by a 2015 Ford F350 6.7L PSD 4WD CC LWB
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01-11-2025, 07:37 PM
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#3
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Montana Master
Join Date: Mar 2021
Location: Western NY
Posts: 614
M.O.C. #28430
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Yes, one and done, but I always throw the torque wrench on them when I grease the wheel bearings. I’m right there and it’s peace of mind.
__________________
Mark & Karen
2021 3121rl - slide toppers, cottage white, X-Factors, disc brakes, 300ah Lithium, DC/DC charging, Gen-Y pinbox. 2021 F-350, 6.7L, SRW CC LB - B&W Companion
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01-11-2025, 09:55 PM
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#4
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Site Team
Join Date: Oct 2005
Location: Carmichael - CA
Posts: 7,937
M.O.C. #4831
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Rondo: The chart posted by MandK (above) is the answer. I believe the U bolts are 1/2 - 20 with hex nuts and the recommended torque is 45-70 ft. lbs. Big range! I would be up at 60 or so just for grins.
__________________
Carl (n Susan)
There is more to life than fuel mileage.
2012 Montana 3700RL Big Sky Package towed by a 2015 Ford F350 6.7L PSD 4WD CC LWB
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01-12-2025, 08:42 AM
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#5
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Montana Master
Join Date: May 2019
Location: Alton
Posts: 3,048
M.O.C. #24086
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The Dexter Axle service manual is in the files section.
Torque values are on page 67 (picture above).
__________________
Daryl and Marianne,
2019 3130re 20th Anniversary Edition
2016 F350 Lariat
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01-12-2025, 05:31 PM
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#6
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Site Team
Join Date: Aug 2007
Location: Omaha
Posts: 6,815
M.O.C. #7560
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Thanks gang! When I get the Monte back from the dealer I'll make sure the torque on the U bolts is setting between 60 and 65 and that should do me. I'll check them when I check the lug nut torque after I get it back home and in the shed. Easier to crawl under it on the concrete than out on the road somewhere on the cold dirt! LOL Take care all and have a good winter!
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01-13-2025, 08:56 AM
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#7
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Montana Master
Join Date: May 2019
Location: Alton
Posts: 3,048
M.O.C. #24086
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Don't forget to torque the Shackle nuts.
50 ft lbs
Ref Lippert
ccd-0001409.pdf
It's in the Lippert NOW app.
After finding a broken leaf spring hanger on our departure day in Moab Utah, I now do an "arrival" inspection on the suspension.
I also check the torque regularly on a road trip.
__________________
Daryl and Marianne,
2019 3130re 20th Anniversary Edition
2016 F350 Lariat
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