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Topic: Rear end thump, what to do. (Read 1540 times) previous topic - next topic

Re: Rear end thump, what to do.

Reply #40 –
Quote from: golfnut –
It seems to be more of a suspension problem then driveline, but who knows. Kim
Shocks, shock bushings and mounts, torque links and bushings
Scott

Re: Rear end thump, what to do.

Reply #41 –
Quote from: golfnut –
It doesn't do it shifting gears, or downshifting, or retarder use or braking. It will knock more like, in just the movement of slowing or increasing speed. Honestly, to me it sounds more like an old house settling on its foundation.
At the end of the day, all you can do until you have the time to put your coach up on jack stands and have trained hands, eyes, ears, and mind do a thorough inspection is track the rate of change.  Is the noise getting better or worse?  How quickly is the noise changing.  If it's the same mile after mile, from everything you've described, don't worry.  If the noise is getting worse, and you're out on the road find a friendly truck shop, show them how to block your suspension for safety and ask them to remove the rear wheels and do a thorough inspection for anything that might be awry.  Do ask them to keep the rear level as they raise it and place it on jack stands.  Or, just stop worrying and have a good time.

Re: Rear end thump, what to do.

Reply #42 –
Thanks to everyone, great to have all the response. Same noise, no worse or better. 300 miles to the homestead, so just headed down the road. Jor had the front shocks replaced, backs are original. Would be nice if that is the issue, I have checked bolts, but haven't put any tourque to them. We have still had a great time, the weather the last few days has been sunny and in the 70's. We did lose a hub cap somewhere yesterday, I normally give them a little push before heading out, but failed in doing that. I of course will update everyone when I know more. I am pretty sure I didn't bring Ernie (my bowling ball) along for the ride.
Kim McCoy, I see we have a Hatfield on the forum, no feuding from this McCoy.

Re: Rear end thump, what to do.

Reply #43 –
You also have the Real McCoy.

Re: Rear end thump, what to do.

Reply #44 –
 In our travels I was always the one noting and describing odd noises.  Jeff is too hard of hearing to be able to accurately place the location of things.  In our '02, we had two occasions of noise.  Once it was a shock mount that needed to be tightened and the other was something loose on the tag axel.  Both times I got a very discrete eyeball from the tech at Foretravel (but they loved me because we always brought boxes of donuts or bought pizzas for the entire shop during our stays), but then they had to admit that they had found something that cured the phantom noise. 

Re: Rear end thump, what to do.

Reply #45 –
What was the noise on the tag? My air brake cans rattle just wondering if that is what they found an how they fixed it.
Thanks, Larry

Re: Rear end thump, what to do.

Reply #46 –
Quote from: Townrestor –
What was the noise on the tag? My air brake cans rattle just wondering if that is what they found an how they fixed it.
Thanks, Larry

This was quite a while ago and I really cannot remember.  Whenever we went over any bit of rough road surface something would bang underneath the coach. I knew it had not always sounded like that, so I asked them to look. They may have taken it out for a drive to help diagnose.

Re: Rear end thump, what to do.

Reply #47 –
We made it home safe and sound. I have Shorty up on stands, I should get underneath today to check things out. Thanks

Re: Rear end thump, what to do.

Reply #48 –
I have found 2 rear shocks, both being forward of rear tires, that are not right. I will post pics, the driver side shock bottom mount I can wiggle, the big washer I can turn freely. The other side, you can see busted metal piece. I will have all 4 rear shocks replaced as they are original. So,I replace them with the exact ones as Jor put on the front? What do I need to know about the ride height adjusters after new shocks put on. You all think this is enough of an issue to cause the clunking? Thanks again. Kim

Re: Rear end thump, what to do.

Reply #49 –
That thing that is broken will need to be rewelded and new shocks won't change the ride height.

Re: Rear end thump, what to do.

Reply #50 –
Kim,  Ride height valves adjust the space between the top of the upper air spring plate to the bottom ot the bottom air spring plate to 8.5 inches.  Shocks have nothing to do with this distance.

Koni 8805-1010 are good shocks to consider.

And I missed the broken mount and agree getting it welded will be needed.  All the best getting it squared away.  If you are stumped, see Keith Risch in north Nacogdoches.

Re: Rear end thump, what to do.

Reply #51 –
I guess,I just need to ask shop if they can do this repair. I suppose protocol would be to get shocks from them? Kim

Re: Rear end thump, what to do.

Reply #52 –
I suspected it to be loose shock mounts, looks like it is the issue.
Johnh

Re: Rear end thump, what to do.

Reply #53 –
So the washer under the head of the bolt may rattle, but wont clunk. The other one is damaged and will need to be repaired. If it was double sheared it would have never failed. I'm starting to think that they should be doubled sheared to prevent failures. They should last a life time and do not. If it was me I would drive it home and keep an eye on it. Pull and tie the shock out of the way if it comes loose. Get it repaired at home at a convenient time. Since it has failed this would be the time to at least get that one shock mount double sheared by adding a additional mount on the other side of the shock for the bolt to go threw a mount plate, the shock, and the new mount plate'

Re: Rear end thump, what to do.

Reply #54 –
Stewart and Stevens in Longview is a good shop. They fixed a exhaust manifold leak on mine and found a split charged air cooler.

Wow the increase in power was amazing.

If you are a motorcade member try getting parts from Foretravel. I saved a few thousand dollars in the charged air cooler from Foretravel.