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Old 03-05-2010, 09:13 PM   #15
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1997 Discovery, XC chassis, 125K miles

When we bought the coach last year, it had to be "herded" down the road. It had a worn out Howard Power Center unit on it. Driving it was a challenge. "Drama" is a word that should be used for stage plays, not driving. Drama and terror were words we used to often to describe the driving experience.

On the advice of John Henderson at Henderson's Line Up, we had RV Masters, Houston, do the following:

remove the Howard Power Center
add Safe-T-Plus steering stabilizer with SuperSteer trim kit
install new Koni FSD shock absorbers
add SuperSteer motion control units
M3 chassis maintenance

The improvement in handling was remarkable. It drives reasonably well now, but I think it can be better. I want to install the SuperSteer bell crank, check/adjust alignment, check/adjust steering box, and center the steering wheel. I haven't found a facility in Texas that I trust to do the work with special care. I may take it to Henderson's or one of his RPA dealers.

JDS
Bellville, TX
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Old 03-05-2010, 10:20 PM   #16
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For what it's worth...just get under the chassis and look around.
See where there is play and interference between parts. Check for looseness and play. Have someone work the steerting wheel back and forth and look for play in all the components. Check for interference with the sway bar.

Look especially at the track bars. My front and rear track bars had crumbling rubber at the ends. I replaced the front and it tracks better. (I'm saving up for the rear)

If you have a tail wagging sensation check the rear track bar also.

If the track bars are bad you will lose the good control you once had as the axle's will be able to shift from side to side independent of the frame.
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Old 03-11-2010, 05:45 AM   #17
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Noone mentioned Ride Height Adjustment..Can be a contributing factor. Good Luck
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Old 03-11-2010, 08:12 AM   #18
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I have a real problem with the front suspension on my coach. On some roads it seems to get real stiff while going over expansion joints. It threatens to disassemble the coach while it is happening.
A friend had this problem with his Tiffin Phaeton. After he weighed it and reduced his front air pressure by about 15 pounds, it smoothed out.
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Old 03-11-2010, 10:00 AM   #19
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Paul
I had some symptoms as yours. I found I had a toe out situatiation. a laser alignment was this fix for me. I had my coach in at Redlands truck & Rv for other work. They felt my tires and the inside tread was just slightly worn lower than the treads going towards the outside of the tire. They suggested they should take a look at it on their alignment rack, they did a 4 wheel alignment and the drive home was a noticeable improvement, and I really did not think it drove that bad before. Luckily I was loaded for travel fluid tanks full except grey and black.
So take it in heavy as you would normally travel.
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Old 03-11-2010, 12:03 PM   #20
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Thanks to all for all the help. I'm going to get underneath the coach and check the suspension for wear, whern I get a chance. Then I'll get an alignment. Freightliner says the toe in should be 1/16. I don't think that tire pressure is a factor as I have not changed the pressure since I bought the motorhome and the "wandering" is fairly new. I will post later on what I found and what I did, and of course, the results.

Paul
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Old 03-17-2010, 07:02 PM   #21
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Thanks to all for all the help. I'm going to get underneath the coach and check the suspension for wear, whern I get a chance. Then I'll get an alignment. Freightliner says the toe in should be 1/16. I don't think that tire pressure is a factor as I have not changed the pressure since I bought the motorhome and the "wandering" is fairly new. I will post later on what I found and what I did, and of course, the results.

Paul
Well.....

What did you find out under there?

I took a look just the other day and found that the little bolt connecting the lever to the air bag control was almost all the way out and I had about two inches of play before the lever would actuate up or down because of it.
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Old 03-18-2010, 05:53 PM   #22
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I've been unable to get under the coach due to a spill a few weeks ago, but I will be getting under there next week, hurting or not. Spring is approaching and I want to be ready to go.

Paul
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Old 03-18-2010, 06:25 PM   #23
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That must of been a really good SPILL Paul, sorry for your hurt.
Spring has arrived in Calif. Got my 1st trip in the works just 4 weeks from now, a month long one to get the year going.
Yup, 1/16 toe in. I went from toe out to toe in. Make it right.
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Old 03-21-2010, 06:39 PM   #24
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Aches or not, I got under the motorhome and found that the rubber bushings on the anti-sway bar were gone on the driver's side. I had a set left over from my Safari so I installed new ones on both sides. Tuesday I hope to have the alignment done and I'll report back on the progress.

Paul
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Old 03-25-2010, 09:13 AM   #25
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Final result

This morning I took the motorhome to be aligned and I am very pleased with the result. With the new bushings on the anti-sway bar and the alignment with a little bit of tow-in, it drives beautifully. Now I'm ready to get out on the road.


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Old 03-25-2010, 09:33 AM   #26
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Thanks for the follow up, thats good news, your motorhome is fixed and you are obviously better also.
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Old 03-25-2010, 12:42 PM   #27
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Quote:
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Aches or not, I got under the motorhome and found that the rubber bushings on the anti-sway bar were gone on the driver's side. I had a set left over from my Safari so I installed new ones on both sides. Tuesday I hope to have the alignment done and I'll report back on the progress.

Paul
Paul, are those replacement bushings available in polyurethane?
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Old 03-25-2010, 03:16 PM   #28
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Yes, they are polyurethane. However, I've had them for a few years and don't remember where I found them on-line. I shouldn't have to replace them again.

Paul
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