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Old 04-06-2015, 06:41 PM   #15
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Originally Posted by Hfg59 View Post
Steve I don't understand how a differential prob could keep air brake from holding. But I do agree the handling prob could be in the diff.
Unless I am mistaken, the parking brake actually works on the transmission/driveshaft and not the individual wheel brakes. So if you had a broken diff, it would be like having one side off the ground which would allow the other side to rotate.

Again, a super low chance of it happening, but just a thought I had an easy enough to test.

Steve
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Old 04-06-2015, 07:15 PM   #16
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Dp or air brake systems have spring brakes on real axle that require application of air to release.

Since it is already in the shop we just need to wait for "film at 11"...
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Old 04-06-2015, 07:24 PM   #17
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Your coach wouldn't happen to be a Monaco product (Monaco, Holiday Rambler, Beaver, and Safari) with the RR4R chassis....would it?

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Old 04-06-2015, 08:36 PM   #18
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No Ron it's a winnebago journey with a freightliner XC chassis 2003
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Old 04-08-2015, 10:21 AM   #19
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Ok, just wondering as your symptoms are a lot alike mine when I had my Safari. It turned out to be a broken right trailing arm on the rear end. It caused the entire housing to slip forward and backward a few inches whenever I accelerated or decelerated.

Hope you find your problem. Doesn't sound good.

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Old 04-08-2015, 10:29 AM   #20
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Could also be a blown out shock absorber on the left rear, though it would not cause as dramatic a pull as you seem to indicate. It's worth checking that too.
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Old 04-08-2015, 11:51 AM   #21
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Think your MH has a bell crank, on the steering, that can cause this. In these years they were bushings and they would fail sticking, so throttle on off can shift steer point. The replacement is bearings an grease zerted. And not that many $$ to replace.

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Old 04-08-2015, 05:10 PM   #22
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Mystery solved,it is a loose spring hanger on passenger side front side of axle. 6 bolts loose on top where it bolts to frame. Holes are wallowed out on hanger so it will have to be replaced. They tightened them up an it drove fine taking it home, but I won't chance it since hole are messed up. I will replace the hanger. The mechanic said if bolts had sheared off it definitely would have been an out of control accident. That's not something you normally check on a regular maintenance schedule but I won't ever crawl under there an not look it over again.




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Old 04-08-2015, 06:12 PM   #23
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Well that's new.

Thanks for posting back your findings.
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Old 04-08-2015, 09:16 PM   #24
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You can drill the holes one size larger and install new larger grade eight bolts. That might be a fix.
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Old 04-08-2015, 10:30 PM   #25
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That might work I didnt think of that. They said holes in hanger where worn about 1/2 in both sides of hole. Hanger is cast iron which is fairly soft compared to the frame which is steel. They said frame was fine. I guess I could look at holes when I take it off maybe even take it to a machine shop an have holes built back to original size. Hanger is almost 500.00 with freight.
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Old 04-09-2015, 07:22 AM   #26
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Fix the holes. Any competent machine shop can press in some steel bushings to make the holes the correct size again.
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Old 04-09-2015, 07:35 AM   #27
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To fix the holes , they would need to drill them round again. Now you need enough material around the hole to do that and support big washers to hold the bushings in.

Don't look like there is that kind of room to do that.
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Old 04-09-2015, 09:48 AM   #28
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Dont mess with it.

There is a great twisting force on that part and removing material weakens it greatly.

First action is checking the rest.

Next contact manufacturer of chasis to check on any recalls or to see if they have any type of discount as this should NEVER happen.

Next check with DOT as there may be something there.

You should have one bolt removed from all other similar parts so the hole can be inspected to be sure they are not moving around.
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