Rear Axel Loud noises

Topic: Rear Axel Loud noises (Read 1218 times) previous topic - next topic

Rear Axel Loud noises

August 19, 2021, 06:46:40 pm

when traveling trough neighborhood streets at low speeds there are loud noises coming from the rear axel.
they seem to disappear at high speeds and then back again when we left the freeway and headed home.
this is a u320 tag axel.
does anyone had this problem .
how did you fix it.
was going to post a little video but was not able to load it.

Re: Rear Axel Loud noises

Reply #1 – August 19, 2021, 06:47:37 pm

Does the sound change with:

steady throttle going to

accelerating going to

coasting

I.E. does throttle position make a change in the sound?

Re: Rear Axel Loud noises

Reply #2 – August 19, 2021, 07:05:27 pm

Upload your video to Google Photos or other online photo storage and then send us the link to the forum. We can then see and hear the video.

I would find out the problem before driving it much. Could be a tag axle bearing, or lots of other items.

Pierce

Re: Rear Axel Loud noises

Reply #3 – August 19, 2021, 07:09:30 pm

You had some good advice over on FB, someone needs to go under and look for something loose. I agree with Chris sounds like shock bolts need some attention.

Re: Rear Axel Loud noises

Reply #4 – August 19, 2021, 07:11:03 pm

Sorry, many of us are not on Facebook!

Re: Rear Axel Loud noises

Reply #5 – August 19, 2021, 07:14:11 pm

Quote from: Doug W. – August 19, 2021, 07:09:30 pm

You had some good advice over on FB, someone needs to go under and look for something loose. I agree with Chris sounds like shock bolts need some attention.

I will only be able to see the coach tomorrow and I am trying to pick as many brains as possible.
out of so many Wonderful people out there someone had to have this problem.

Re: Rear Axel Loud noises

Reply #6 – August 19, 2021, 07:14:46 pm

Quote from: wolfe10 – August 19, 2021, 07:11:03 pm

Sorry, many of us are not on Facebook!

It's not Facebook. Anyone can open the video by clicking on the link.

Pierce

Re: Rear Axel Loud noises

Reply #7 – August 19, 2021, 07:17:06 pm

can you guys see the link for the video

Shared album - Daniel Cifor - Google Photos

Re: Rear Axel Loud noises

Reply #8 – August 19, 2021, 07:19:22 pm

Quote from: Pierce & Gaylie Stewart – August 19, 2021, 07:14:46 pm

It's not Facebook. Anyone can open the video by clicking on the link. If you have the video or photos on your computer or phone, you can upload to Google Photos. Primer here: Back up photos & videos - Computer - Google Photos Help

Another option and just as fast would be to upload the video to YouTube and then just send the link to the video.

Pierce

Re: Rear Axel Loud noises

Reply #9 – August 19, 2021, 07:23:49 pm

Quote from: danilaprepeleac – August 19, 2021, 07:17:06 pm

can you guys see the link for the video

Yes

That is some strange sounds for sure. Someone needs to do some crawling around under the coach for sure to see what is amiss.

Mike

Re: Rear Axel Loud noises

Reply #10 – August 19, 2021, 07:36:14 pm

Dan not sure this will help, but we have a 38ft U-320 tag and have no noise like that. I agree, check shock mounting bolts and surrounding area for anything loose.

Re: Rear Axel Loud noises

Reply #11 – August 19, 2021, 07:40:47 pm

Quote from: danilaprepeleac – August 19, 2021, 07:17:06 pm

can you guys see the link for the video

Shared album - Daniel Cifor - Google Photos

Yup, check shock and other suspension components. Does not sound like a rear axle issue.

Re: Rear Axel Loud noises

Reply #12 – August 19, 2021, 08:09:20 pm

I had a noise that sounds like that when I had a broken shock in my Dynasty.

Re: Rear Axel Loud noises

Reply #13 – August 19, 2021, 09:15:24 pm

Probably not applying, but there was a time when Foretavel used less quiet rear axles on a few coaches.

Re: Rear Axel Loud noises

Reply #14 – August 19, 2021, 09:18:54 pm

Would guess shock bushing also. If it was a drag link wouldnt sound bouncy. Is that a lifting tag? Lift and shake by hand? Sounding metal to metal may have rust tracing present to help isolate
Scott
Working Safely around your Foretravel

Re: Rear Axel Loud noises

Reply #15 – August 20, 2021, 12:14:25 am

Quote from: dsd
Is that a lifting tag? Lift and shake by hand? Sounding metal to metal may have rust tracing present to help isolate
Scott
[url=https://www.foreforums.com/index.php?topic=10632.0

?topic=10632.0]Working Safely around your Foretravel[/url]

yes

Re: Rear Axel Loud noises

Reply #16 – August 20, 2021, 08:34:53 am

Probably not related, but since you've mentioned the coach won't auto-level Slide Operation have you verified that it actually goes to ride height in Travel mode?

Re: Rear Axel Loud noises

Reply #17 – August 20, 2021, 12:33:51 pm

Might check U joints .

Re: Rear Axel Loud noises

Reply #18 – August 20, 2021, 07:05:17 pm

Quote from: Michelle – August 20, 2021, 08:34:53 am

Probably not related, but since you've mentioned the coach won't auto-level Slide Operation ~~have you verified that it actually goes to ride height in Travel mode~~?

Yes it goes into Travel mode.
when the engine is on also Auto Levels.
I can also raise the coach(that's how my mechanic noticed that the Tag Air bags were deteriorating)

Re: Rear Axel Loud noises

Reply #19 – August 20, 2021, 07:18:18 pm

Today i went and looked at the coach again and drove it and one of my Mechanic buddies was with me.
Th noise comes from the driver side shower area but makes it sound like all over that tile floor.
When i looked underneath everything looks tight.
the shocks are unmovable when grabbed and shaken.
the u bolts that hold the axle are tight no movement wear there
Has anyone changed Bushing in the rear axle.
Spoke with a friend(owns a trucking company) and recommended polyurethane bushings for better ride and longer lasting.Has anyone done this.

As far as Bulkhead.
when i looked under the coach the corner metal that holds the bulkhead on the pavement end looks good and solid no separation, all bolts are there there is no Noticeable drop between the Fender and the Cargo door.

what is interesting is that the tires were pretty low inflated and that would dampen that noise as well(am i correct?)

Re: Rear Axel Loud noises

Reply #20 – August 20, 2021, 07:31:20 pm

Dani,fill out the signature section so we know exactly what coach you have,what year and engine,sounds like the bearing in the
transmission where the driveshaft connects may be loose,you can check this with a prybar,if you search the forum for transmission vibration you will find more info.

Re: Rear Axel Loud noises

Reply #21 – August 20, 2021, 07:43:47 pm

Quote from: John44 – August 20, 2021, 07:31:20 pm

Dani,fill out the signature section so we know exactly what coach you have,what year and engine,sounds like the bearing in the
transmission where the driveshaft connects may be loose,you can check this with a prybar,if you search the forum for transmission vibration you will find more info.

Its a 2003 u320 ism 450

Re: Rear Axel Loud noises

Reply #22 – August 20, 2021, 07:47:29 pm

Quote from: danilaprepeleac – August 20, 2021, 07:18:18 pm

Has anyone changed Bushing in the rear axle.
Spoke with a friend(owns a trucking company) and recommended polyurethane bushings for better ride and longer lasting.Has anyone done this.

If you are talking about the trailing arm bushings and pan hard bar bushings then Yes

Mike

Re: Rear Axel Loud noises

Reply #23 – August 20, 2021, 07:53:15 pm

Quote from: John44 – August 20, 2021, 07:31:20 pm

Dani,fill out the signature section so we know exactly what coach you have,what year and engine,sounds like the bearing in the
transmission where the driveshaft connects may be loose,you can check this with a prybar,if you search the forum for transmission vibration you will find more info.

The noise happens at low speeds,
not sure if it there when traveling at high interstate speeds, i cant say its not there because i was driving the coach.
when the owner was driving the coach and decided to listen see what it was like in the rear of the coach and that is when i noticed and recorded the noise,rattle and all that good stuff on stop and go Neighborhood streets.

Re: Rear Axel Loud noises

Reply #24 – August 20, 2021, 08:59:48 pm

Next question,where is the coach,maybe one of us is near to check it out?

Affiliate Notice