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Old 02-21-2015, 01:24 PM   #1
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Hitting the stops

I have a 2008 DS 4317 which I purchased about 5 months ago. The coach has 25000 miles. The problem I am having is that on the freeways here in the LA area I am hitting both my up and down stops due to the dips in the road. Sometimes it feels like the coach is going to come right off the frame. I have had the ride height check and it is correct. The tires are inflated to 100 lbs on the fronts, 85 lbs on the drive axle and 80 lbs on the tag axle. The coach is lightly loaded. There is no signs of leakage on the Bilsteins. So my only thought left is that the shocks are either worn out or just not strong enough for the coach. Has anyone else had this experience?

Thanks,Toby
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Old 02-21-2015, 01:31 PM   #2
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How about air bags all up??
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Old 02-21-2015, 01:31 PM   #3
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Are you sure it's hitting the stops?

The Bilstein shocks on my '07 were so firm/harsh, Spartan replaced the front shocks with Koni's and the difference was amazing.

All of the jarring stopped and the ride was greatly improved.

Check with Spartan.
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Old 02-21-2015, 01:36 PM   #4
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Hi Tobys96,
Route 66 has one of the first things you might consider. The other item is air bag restrictors (motion control units). Go to Spartan RV Chassis and read about them. I have both the Koni shocks and the motion control units on my coach. The coach drives and rides much more like a car. I would make both purchases again.
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Old 02-21-2015, 02:39 PM   #5
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Try the Koni's up front. My OEM shocks were totally DOA after only 3 years on a MADP. The fronts were so bad that it seemed like the front tires were completely out of balance at certain speeds and road undulations.

Rears were also bad but with the tag masked the problem to a limited degree.
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Old 02-21-2015, 02:40 PM   #6
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I would say a shock problem as well. Or there is something more sever wrong.


I have a hard time seeing you coach going through 8-10" of suspension travel on any interstate. That would brake a lot of things in the house.

Who checked the ride height.
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Old 02-21-2015, 04:06 PM   #7
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Sounds like shocks and road surface both need replacement.

100 PSI in a lightly loaded coach may be a bit much.. Have the rig weighed (4 corner weights) and adjust tire pressure per results.

Load or travel first.

yes, I know the tire says MAXIMUM PRESSURE 100 PSI (90 if a Dual) but that is only half the sentence, Read the other half and you will understand.
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Old 02-21-2015, 04:22 PM   #8
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I had Koni shocks installed by mistake on my 2008 DS with the Hendricson front axel. The Konis do not allow for enough travel and the coach behaved like yours. Once the Bilsteins were re-installed, the ride became normal
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Old 06-27-2015, 10:36 AM   #9
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Front shocks on 2008 Dutch Star 4317

In February I posted about the front suspension was so soft that the shocks could not dampen the up/down travel as I was hitting both stops. At the time my coach had 25K miles. I now have 26.5K on the coach and still have the same problem. I had my local Spartan dealer check everything out again and this time they found a broken right front shock. The break was a clean flush break where the shaft is welded to the eyelet. They installed new Bilsteins on the front. On the drive home the ride is still very soft but now controllable, on one bump though, I came close to hitting the up stop. In my research I have found that neither Bilstein nor Koni make a shock for this chassis. The shocks that Hendrickson chose from Bilstein for the front axle are rated per the Bilstein RV application sheet at under 12000 lbs. GVWF., not for the 14,600 lb. front axles that are on the coach. I have spoken with the tech reps of Spartan, Newmar, Hendrickson and Bilstein. The reason I was given for there shock choice was that a soft ride was wanted. If there are any modifications that can be made so this coach doesn't ride like a 47 Buick I once owned that had no shocks, I would love to hear from you. Thanks, Toby
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