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Old 02-20-2013, 03:31 PM   #1
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Diplomat Slide Adjustment

Tha slide on my 1999 Diplomat does not extend nor retract evenly, and it seems to be getting worse with use. The forward end of the slide leads the aft end by 2 - 3 inches when either extending or retracting the slide. It appears to be ultimately extending and retracting completely, but not evenly. I'm wondering is the aft mechanism has developed play and/or loosened from its anchor point and has to work out the play before driving the slide out or in? Has anyone else experienced that issue? If so, what is the fix?
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Old 02-20-2013, 08:56 PM   #2
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Location: McCleary,wa
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I had a 99 Diplomat that did the same thing. I bought it used and it had always worked that way. I had to replace the electric slide motor because it broke the housing and started leaking oil, caused by the slide being out of adjustment. I had a maint. agreement at the time so I didn't do the work myself, but I would do it myself now if my current coach ever jumps a gear.
Maybe someone that has done the adjustment will jump in here, I would get it fixed as soon as you can.
John G.
John and Cherrie
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Old 02-20-2013, 09:43 PM   #3
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If your slide out is a Lippert, the attached has the alignment procedure.
Larry & Doni
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Old 02-22-2013, 10:05 AM   #4
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I would pull the cover off where the motor is in the cargo bay, you can see the shafts going to the front and rear from there. I would run the slide out a few inches and try to make sure there is no load on one end or the other. I would guess one end has jumped one or two cogs/gears. You can loosen the shaft by pulling the shear pins or bolts out. Line up the slide and bolt back up or replace shear pin. I think it can be up to an inch off when going out or in but I would try to make it closer. There is info on manufactures site about adjusting the DIFFERENT types of slides.
Good luck
John G.
John and Cherrie
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Old 02-22-2013, 01:32 PM   #5
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Here is another thought depending on what type slide you have. My largest slide has the two large bars with gears on them. I found my slide was slowing down over time. I finally decided to adjust it. From the outside with the coach at ride height and on level ground, I checked the paint alignment. The front of the slide was low by about 1/2" to 3/4". I adjusted it several times to get all of the paint aligned (this is done under the slide on the outside, large bolts or allens that are double nutted). I made the adjustment several times, bringong the slide in and out until everythong was aligned.

After I did this, the slide now moves in and out like it did when it was new. No more binding or wiggling front to back as it comes in. Thios might be one of the things you check.
Don & Mary
2019 Newmar Dutch Star 4018 (Freightliner)
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