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Old 02-19-2009, 07:11 AM   #15
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Steve, I assume you downloaded a copy of the instructions for the Holland Steer Axle. You have model AS-120. The details of how to do the measurements are on Page 8, Fig. 7.
If not: measure the bottom of the frame rail to the ground (A). measure the center of the wheel to the ground (B). A-B = the air spring mounting height, which should be 262 mm (10.31"). If you can't get within 6mm of this you should get expert advice. I would not tamper with the linkage.

As for the difference in the 2 sides it is probably because they are loaded differently. Have you weighed your coach recently? I suspect you have a lot more weight on the driver's side.
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Old 02-19-2009, 08:56 AM   #16
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I do have the original Neway (now Holland) manuals. My front suspension is an AS-120. It talks about measuring from the bottom of the frame to the top of the axle. As I mentioned my axle has a .5 inch plate on top of it, which is where the air spring is mounted. I'll try your measurement technique and see how close I come.
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Old 02-27-2009, 03:53 AM   #17
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Just as a side note....
Our 2000 was in for alignment after I had done shocks, front bearings and tried to get the front ride height valve to the 1/4" difference as noted in the specs. The professionals at Colton Turck (no kidding, these guys are good)called me to say that something is really screwy about the right side ride/height system. After disconnecting each line and following the ins and outs of air it was determined that there was a block with out a check valve feeding the right actuator. The bottom line is the valve always was being fed and thus the bag was too. I knew something was up when I always heard the ride height valve continuously bleeding off on one side only. Successful corrections were made, alignment done and now a great coach to drive. This is a used coach so we can not conclude where the lines got incorrectly installed but the previous owner must have noted the steering problems because he installed a Safe T Plus that was off-centered to compensate for the incorrect ride/height.
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