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Old 08-19-2015, 07:21 AM   #1
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Motorhome Step

Hi,
I am having a problem with my entrance step, it is a Coach Step. I had an issue awhile back with it not retracting all the way, I took it apart and lubed it all. It seemed to be stuck in the gear portion so I hit it a few times to free it up, put it back together and it worked great except now when it retracts the step goes all the way up but the motor runs on for a few seconds turning the gears with no where to go so I'm afraid it is going to strip the gears. I can't figure out how to adjust it so it stops when it should. Any ideas?
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Old 08-19-2015, 11:39 AM   #2
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Quote:
Originally Posted by mant View Post
Hi,
I am having a problem with my entrance step, it is a Coach Step. I had an issue awhile back with it not retracting all the way, I took it apart and lubed it all. It seemed to be stuck in the gear portion so I hit it a few times to free it up, put it back together and it worked great except now when it retracts the step goes all the way up but the motor runs on for a few seconds turning the gears with no where to go so I'm afraid it is going to strip the gears. I can't figure out how to adjust it so it stops when it should. Any ideas?
mant
Me thinks you put it back together wrong.
Take it apart again and align the gears so the motor does not continue to "run on for a few seconds" when the step is all the way up.
Mel
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Old 08-19-2015, 11:55 AM   #3
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Coach steps are a Lippert product and I don't find as much about them as Kwikee steps. Kwikee has lots of manuals, troubleshooting and RVer's videos and 'How to' on replacing and repairing. I think your issue is with the internal gearbox/motor unit, not a limiter or eternal control. If you can track down a manual or troubleshooting guide for your step model, I'd start there. If it's internal to the gearbox/motor, from what I've seen, the Coach step mechanism is an electric auto window mechanism like Kwikee. I don't know which make or model replaces it. Lippert wants close to $200 for a replacement motor and gear mechanism, but it is most likely available at an auto parts store for under $90. I'd take the old gearbox/motor to a auto parts store and ask them to match it.

The gears in these mechanisms are plastic so they can't stand much abuse. If they are damaged, it's easiest to just replace the whole thing.
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Old 08-19-2015, 12:44 PM   #4
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Quote:
Originally Posted by mant View Post
Hi,
I am having a problem with my entrance step, it is a Coach Step. I had an issue awhile back with it not retracting all the way, I took it apart and lubed it all. It seemed to be stuck in the gear portion so I hit it a few times to free it up, put it back together and it worked great except now when it retracts the step goes all the way up but the motor runs on for a few seconds turning the gears with no where to go so I'm afraid it is going to strip the gears. I can't figure out how to adjust it so it stops when it should. Any ideas?
mant,
I'm not all that familiar with Lippert components and step mechanisms but, have had Kwikee units apart quite a few times. If you take a look at the link below, you'll see a replacement motor-drive and, some wiring etc. for a Lippert unit. Anyone who's done any form of work on a Kwikee unit will see that, that unit is dangerously close to a Kwikee motor drive and gear box.


http://www.amazon.com/Lippert-Compon...s=Lippert+step

Now, all of the Kiwkee units I've dealt with have no "limiters" that would regulate the stopping in each operation, extend and retract. The motor is designed to feel resistance of the stop, in each direction so, when it senses that, it stops, just like a power window in any auto. Now, based on the fact that, that Lippert unit looks almost identical to a Kwikee unit, does it have the same design characteristics as the Kwikee, not a clue. Again, I'm not familiar with your unit so, operational characteristics could certainly be different and, there may in fact, be limiters that do stop the motor, for extend and retract. A little more investigation would certainly be warranted.
Scott

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Originally Posted by mel s View Post
mant
Me thinks you put it back together wrong.
Take it apart again and align the gears so the motor does not continue to "run on for a few seconds" when the step is all the way up.
Mel
'96 Safari
Mel,
I've never had to deal with a Lippert step so, I'm not familiar with them at all, not even the looks of one. But, as I stated above, I looked them up and, based on what I found on Amazon, the motor drive and gear box look seriously close to a Kwikee product. So, if the two gear boxes, Kwikee and Lippert are closely designed, there is no "aligning" of the gears. Kwikee's main driven gear, the 3" one, has a rectangular hole in the center of it, to accept the mounting shaft, also rectangular. There are, basically two ways to install that driven gear, normally or, 180 degrees out.

Other than that, the driven gear is the same, no matter which way it's placed on the rectangular shaft. Now, is Lippert the same exact scenario inside the gear box,??? Not a clue. I've never had one apart. So, in that, there actually is no timing or, re-aligning of the gears, other than installing the driven gear 180 out. It will work fine, either way. But, I'd have to see the inside of the gear box of a Lippert, to be sure, it's assembled the same way.
Scott

Quote:
Originally Posted by BFlinn181 View Post
Coach steps are a Lippert product and I don't find as much about them as Kwikee steps. Kwikee has lots of manuals, troubleshooting and RVer's videos and 'How to' on replacing and repairing. I think your issue is with the internal gearbox/motor unit, not a limiter or eternal control. If you can track down a manual or troubleshooting guide for your step model, I'd start there. If it's internal to the gearbox/motor, from what I've seen, the Coach step mechanism is an electric auto window mechanism like Kwikee. I don't know which make or model replaces it. Lippert wants close to $200 for a replacement motor and gear mechanism, but it is most likely available at an auto parts store for under $90. I'd take the old gearbox/motor to a auto parts store and ask them to match it.

The gears in these mechanisms are plastic so they can't stand much abuse. If they are damaged, it's easiest to just replace the whole thing.
BFlinn,
I've had a few Kwikee step gear boxes apart but, never had a Lippert unit apart. But, based on the link I posted for the OP, the Lippert unit looks outstandingly close to a Kwikee unit. And, all the Kwikee gear boxes I've had apart have "pot metal or, aluminum" gears. I have not seen any with "Plastic" gears, YET! Now, does that mean they don't make any with plastic gears, heck, I don't know. All I know is, I've never seen any with plastic ones.

And, just for information here, you can get brand new replacement motors for Kwikee units, on Amazon, for $67.00, the last time I checked. I didn't check on just a motor replacement for a Lippert. I'll dig around and see what I can find on that. I had the almost same exact issue the OP is having with out Kwikee two-step unit. It would try and continue to retract, even when the step was all the way in. But, with ours, you'd hear the gears grinding for a few seconds. So, I performed surgery on it and, below is what you'll see that I found.
Scott




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Old 08-19-2015, 01:04 PM   #5
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Scott, I take your word for the gear material. I saw one remark about plastic gears and shamelessly repeated it. I actually believe the gears were nylon, but couldn't find anything more about them. It's surprising there seems to be so little DIY on Coach brand steps and so much on Kwikee.

I would imagine Lippert isn't custom building it's mechanism, it most likely is an auto window mechanism. The Op will have to take the old one off and take to a parts store to match up. I hope they then post the results, like I said there seems to be little out there about the Lippert steps and their website doesn't support them like Kwikee does.
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Old 08-19-2015, 01:59 PM   #6
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ahh, maybe there is a couple of broken teeth. The teeth would have to be stripped on the main mechanism because it goes in fine just the last few seconds and about the last ten teeth is where it makes that awful grinding noise. The motor turns fine until that last little bit when the steps are in and that gear is much smaller in diameter.
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Old 08-19-2015, 02:29 PM   #7
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Stromberg Carlson has all the parts necessary to rebuild the steps.
Electric Coach Step Parts :: Stromberg Carlson
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Old 08-19-2015, 03:30 PM   #8
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Quote:
Originally Posted by mant View Post
Hi,
I am having a problem with my entrance step, it is a Coach Step. I had an issue awhile back with it not retracting all the way, I took it apart and lubed it all. It seemed to be stuck in the gear portion so I hit it a few times to free it up, put it back together and it worked great except now when it retracts the step goes all the way up but the motor runs on for a few seconds turning the gears with no where to go so I'm afraid it is going to strip the gears. I can't figure out how to adjust it so it stops when it should. Any ideas?
mant, I have the Coach Step in my 2013 Ventana and just completed a rebuild on the assembly, so it should be similar to your unit. The motor works by sensing resistance, so with your situation, in order for the motor to continue running, there must be some form of slippage.

When you say you "took it apart", what did you remove? the individual steps, the main gear or motor, what?

I would start with the link provided by Selah and look closely at the main gear and motor. Check to see if yours are the same and not missing any of the teeth.

If these 2 parts are good and mating properly, than I would take the motor apart and check the plastic gears inside for ware and tear. You may need a rebuild kit which consists of the plastic gears and 3 plastic pucks which wear out.

Tell us what you "took apart" and we may be able to help some more.
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Old 08-19-2015, 06:03 PM   #9
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All I took off was the linkage from the steps to the mechanism. The steps needed a little lube but the motor wasn't turning the gear so I tapped it a few times and sprayed WD40 and it started to free up, a few more taps and spray and it started working except for when it retracted, the noise started when it was fully retracted. I must have damaged something with the tapping. I hit it when you could here the motor trying to work. I worked it back and forth until it was free.
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Old 08-19-2015, 07:10 PM   #10
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Since it's been stated that the mechanism doesn't have a limit switch, it only shuts off when resistance builds, yours might keep on running because the WD 40 has lubed up the mechanism so the resistance isn't detected. You could try taking it apart and cleaning the gear shafts of some of the lubricant.
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Old 08-19-2015, 08:57 PM   #11
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Looks like I have a project for tomorrow
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Old 08-20-2015, 09:47 AM   #12
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Looks like I have a project for tomorrow
If you can't solve your problem, I can recommend that you contact Stromberg direct at 231-947-8600. Charlie is a wealth of information.
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Old 08-20-2015, 09:54 AM   #13
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So it looks to be a few broken teeth on the big gear. I will have to replace it, thanks for the site for parts.
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Old 08-20-2015, 04:02 PM   #14
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So it looks to be a few broken teeth on the big gear. I will have to replace it, thanks for the site for parts.
Well Mant,
Not glad that you have broken parts but, glad you found the problem and, can do a repair on it yourself. It's always nice that an owner can repair things when presented the opportunity. I also learned something in this thread. I was not aware of the nylon or plastic gears in the motor drive section of a "Coach Step" system.
Scott
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