Troubleshooting Clunking Sound After Install of Roadmaster Sway Bar Motorhome

Question

Question:

I replaced old sway bar and it works great but the reason I replaced sway bar was from the clunking sound on swaying rough turns. The new bar is much better but I still get a clunk when i hit hard rough turns. I have a 2013 newmar bay star sport 28 foot. New bar fit perfect. Is there a torque spec for these sway bars. I am pretty sure the bolts are tight. Could they be too tight or should I try tightening more

asked by: Jay J

0

Expert Reply:

Roadmaster doesn't list torque specs for the sway bar part # RM-1139-148 that you referenced but I do believe your issue is due the way the hardware was torqued down. What most likely went wrong was that you didn't tighten the hardware with the weight of the RV fully on the suspension and instead it was jacked up in the air when the hardware was torqued.

So I would recommend loosening the hardware and then with the weight of the motorhome fully on the suspension try again and you should notice a difference.

expert reply by: Jameson C

0

Answer 1

The Roadmaster Front Anti-Sway Bar #RM-1139-148 uses a 1/2-13 x 2” grade 8 bolt for the front brackets. I have in the past ran into this issue before but it's not very common so I would just run to your local hardware store and get some…

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Answer 2

Yes, the Roadmaster front sway bar part #RM-1139-148 does fit your 2013 Thor Ace with a 16k GVWR.

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Answer 3

For your 2024 Ford F-53, I recommend checking out the Timbren Front Suspension Enhancement System #TFFF53B for the front, and the Timbren Rear Suspension Enhancement System #TFRF53A for the rear. These kits do not require drilling, will replace…

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Answer 4

The torque spec for the rear U bolts on your 2019 F53 motorhome are dependent on the size. If you have 3/4 x 16 u bolts (and used a 1 1/8" socket to remove the nuts) then they torque to 250 lb-ft. If the u bolts are 7/8 x 14 (and you used a…

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Answer 5

The Roadmaster Exact Center Steering Stabilizer w/ Custom Brackets #RM47MR typically comes centered and you would only need to make adjustments after installation and testing to see if it continues to pull. If you adjusted it all the way out to…

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Answer 6

The Roadmaster Rear Anti-Sway Bar for Motorhomes #RM-1139-143 can use your factory u-bolts if they are long enough. If they are not, then Roadmaster recommends using the 7/8 inch diameter u-bolts that are longer (most likely the larger diameter due…

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Answer 7

In regards to the Roadmaster Exact Center Steering Stabilizer part #RM47MR, the stabilizer installs on the front of the steering arm pointed down. I have attached a photo of this below. If this wasn't what you were looking for, please just let me…

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Answer 8

There is a suspension enhancement option for your 2021 Entegra Vision XL built on a Ford F-53 chassis, but I verified with the manufacturer that the steering stabilizer only fits if you have at least a 24,000 lb GVWR. You're not out of luck…

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Answer 9

The Roadmaster #RM-1139-140 and #RM-1139-148 are both replacement anti-sway bars for a Ford F550 or F53 Class A motorhome chassis. Both bars are 1-3/4 inches in diameter. The #RM-1139-140 fits models with a GVWR of 22K-24K, and the #RM-1139-148 fits…

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Answer 10

I found the online version of the install instructions for the Exact Center stabilizers like the #RM47MR. What's fun is that just when you think you have found the correct step to address your problem it tells you to continue to the next step.…

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Answer 11

Roadmaster doesn't list torque specs for the sway bar part #RM-1139-148 that you referenced but I do believe your issue is due the way the hardware was torqued down. What most likely went wrong was that you didn't tighten the hardware with…

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Answer 12

The air suspension system on your 2022 Ram 2500 limits your options for suspension enhancement. None of the air bags made for your truck will be compatible. Instead, I recommend adding the SumoSprings Rebel Custom Helper Springs #SS64VR. The…

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