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Old 05-26-2014, 10:55 AM   #1
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8289ws slide trouble

300+ miles from home and slide trouble. Had it to a shop, not fixed. Called local dealer they said it could take months to get to.
Got the RV under cover and for the first time I was able to get under there and have a look for myself. First off I was told by the guy at dealer where we got the unit that the slides were maintenance free, WRONG! After seeing all the corrosion under there doesn't take rocket science to figure it needs maintenance. The rack and pinion that drives the non powered end of the slide is rusted as are the gears. The gear that's on the powered end closest to the back of the RV has several teeth missing, see picture. This lets the powered end try to move the slide but the non powered end cannot move, the slide binds and the clutch slips. If I can get FR to send me that gear I can fix this myself and not have to wait for who knows how long to fix something that looks like it would take an hour or so.
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Old 05-28-2014, 05:33 PM   #2
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Here are a few more pictures of the broken gear. Removed gear pack from RV and took it apart to get a better look at the gear. Talked with FR, they said they would send a new gear pack at no charge. I'll report back on how long it takes to get the part. Took all of 15 min to remove it from the RV.

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Old 05-28-2014, 05:44 PM   #3
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Good job getting it out of there. Have you considered what you are going to do to prevent this from happening again?
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Old 05-28-2014, 06:35 PM   #4
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Not sure if it was a defect in the gear or maybe the rollers a bit out of round?? Any suggestions? Had the bottom opened up, everything looks looks ok except for some rust on everything. Going to clean all that up and apply a bit of dry lube, put it all back together and see how it goes. I'll have DW move the slide out and back in while I watch the action from down under
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Old 05-28-2014, 07:12 PM   #5
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My TT is a 2014 also. I know the setup on my one slide looks about the same as yours rust wise. Kinda like disc brake rotors I assume it doesn't take much for these to rust. However, I wonder what caused the weakening of the teeth. Looks like a strong part so I'm not sure what would cause the failure.
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Old 05-28-2014, 07:18 PM   #6
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My TT is a 2014 also. I know the setup on my one slide looks about the same as yours rust wise. Kinda like disc brake rotors I assume it doesn't take much for these to rust. However, I wonder what caused the weakening of the teeth. Looks like a strong part so I'm not sure what would cause the failure.
What will cause the failure are 3 things, not being lubed with a dry lube and not being level before you let it out or bring it in. Or the steel was not harden correctly. I dry lube mine 3x's per year.That looks pretty rusted to me by the photo ...
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Old 05-28-2014, 07:34 PM   #7
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Guys, I've been in the gear business for over 20 years.
This part looks like a PM (Powdered Metal) gear, a molded part made in a press. These are cheap to make, but can be fragile regarding sheer forces. The failure pictured looks exactly like this. A cut steel gear would be much stronger, but we all know how the RV industry works - cheap and dirty, believe me, I have personal experiences.

Nice work getting the gear out, and I hope you get the replacement soon.
Be careful of shock loading when operating your slide. Most likely the failed part was defective, possibly porosity, or a material deficiency.
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Old 05-29-2014, 09:14 AM   #8
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Good to know zs325RES. Is something like this with a hex center available in a better grade?

Now I'm worried about storing things in my dinette benches as it looks like the less weight the better on these things.
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Old 05-29-2014, 09:29 AM   #9
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Sorry guys but the (Teeth engagement) adjustment is NOT proper! The Gear is (Lifting up from the Rack) this is evedent by the wear marks on the teeth of the gear. What you have is the (Tip) of the gear & rack (NOT) engaged properly,causing Gear teeth breakage! Pic. in post #1 looks like bent rack limiter tab. Youroo!!
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Old 05-29-2014, 09:35 AM   #10
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So, the teeth on the gear aren't fully engaging the teeth on the slide as they should be. Now that I look at the pic, there does seem to be a small angle of difference between the two. What sort of adjustment is available?
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