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Kwikee repair, part 2

In my last post about Kwikee steps,I told about a repair kit for Kwikee step motors, that has since been discontinued. But… all is not lost- a quick trip to the local auto parts store let me fix a set of steps for a fraction of the cost of replacing the motor.

In fact, the parts cost a bit under $9, and saved having to buy an over $100 (if you buy a Kwikee brand motor), or around $60 (if you buy one from an auto parts store).

Help Brand plugs

Help brand plugs

If your Kwikee steps simply get jammed, and you are getting power to them (you can hear the box click when you open or close the door, and the under step light is going on and off), quite often it is just these small plastic parts that are bad- not the whole motor. The symptoms of failure for these parts are that the step will get stuck in the extended or retracted position, yet the step is still getting power.

Let’s take a look at how to replace them…

These parts are actually 1/2 of the kit that used to be available from Kincor, the gear isn’t included, but most times the gear itself is fine. Note that the new Kwikee steps use an “Integrated Motor and Linkage assembly, so if it doesn’t look like these pictures, this fix will not work, but it’s fine for most.

You start by removing the motor- MAKE CERTAIN THE STEP IS UNPLUGGED BEFORE WORKING ON IT!!!– IT IS POSSIBLE FOR THE STEP TO BE IN A BIND, AND ACTIVATE WHEN YOU REMOVE THE BIND- something that can be dangerous to fingers and hands. There is always a 4 way plug within a foot of the step- unplug this.

The motor is held on by 3 machine screws- 5/16″ hex head, and is connected to the control box by a weatherproof connector- note that newer styles use a snap together “Packard” style motor connector.

Remove these screws and disconnect the leads, and the motor should pull straight down. By aware that there is a small pin in the end of the gear which might stay in the gear housing, or might come out.Kwikee step gearbox

Once the motor is off of the step, take it to your workbench and remove the plate covering the internal gears- most I have run in to take a torx bit to remove this screw.

After removing the cover, you will see the output gear with a larger gear adapter and the plastic gear set with the plastic gear plugs. The adapter simply lifts off, then to remove the output gear you will snap off a small “C” clip from the shaft (being careful not to lose it). The output gear will lift off, exposing the plugs in their triangular cutout.

Kwikee gaer adapter removedGear adapter

(click on any image for a larger view)

Replacing the plugs is a simple matter, though the replacements will be tight. I put a bit of grease to hold them in place while I start the output gear, then press the whole thing back together.

Now it is simply a matter of reversing the order- replace the “C” clip, cover plate, output adapter, reattach the motor to the step gearbox, hook the motor wires back to the control box, and last- making certain your hands and fingers are clear, hook the 4 way connector back up.

These motors very rarely actually burn out- they really don’t make that many revolutions in their work, so normally this will fix them as good as new. Of course, while you are under the rig, it’s a great time to lubricate the step.

Hope this helps!

–Chris

CC BY-SA 4.0
Kwikee repair, part 2 by Chris Bryant is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

40 comments for “Kwikee repair, part 2

  1. rick
    July 22, 2015 at 10:01 am

    thank you,,replaced the gear plugs which were totally disenergrated works great !!!

  2. keith allen
    June 18, 2015 at 4:08 pm

    I have purchased and replaced my kwikee single step on 97 national seabreeze rv. the issue is the steps extend and retract but I have a buzzing sound and it will not stop. I have tried different variations 0f thw wiring(due to age of rv)but have had no luck. any suggestions?

  3. john blackmore
    August 1, 2014 at 5:28 pm

    would a bad control unit make the step work backwords all of a sudden? what is the replacement part for the control # 909513?

  4. Bob Ault
    November 15, 2013 at 9:03 pm

    My 1995 kwikee linkage #151364 broke. Bought a new linkage #151364. Old sq. shaft is 1/4 in. New shaft is 1/2 in. Is there any way to get a new gear box or adapt the one I have?

  5. Dennis Shepherd
    July 20, 2013 at 11:04 pm

    HI I HAVE A KWIKEE #860 STEP IF SETTING 3 TO 4 DAYS IT WILL RUN THE BATTERY DOWN. I CAN UNPLUG THE 4 WAY PLUG AT THE STEP AND IT DON’T RUN THE BATTERY DOWN. CAN YOU HELP ME OUT ON THIS ONE ? IF SO THANK YOU.

    • July 22, 2013 at 9:25 pm

      Hi Dennis,
      That should not be happening- the unit should shut completely off with near zero power drain. Does yours have an understep light? Does it stay on? I would double check power and grounds- low power can keep it from shutting down correctly.

  6. Larry
    July 18, 2013 at 2:26 pm

    Last year (June 2012) I replaced the plastic gear plugs as you described to correct a non working step. Everything worked OK. Now the step extends and retracts correctly however the motor continues to pulsate for about a half dozen cycles before shutting off. I see this was described in a 2011 post and you suggested that it may be the gear that is worn. I’m curious, did this solve the problem or is there something else I should investigate?

    • July 19, 2013 at 11:48 am

      Hi Larry,
      The other thing I would check out is the 4 way electrical connector- the older square ones were sometimes problematic, and sometimes a bad connection can cause some chattering.

      –Chris

  7. Darren
    June 26, 2013 at 1:30 pm

    After jumper testing motor, both before and after removing it(no life in it at all)ordered a Taurus window motor from Advanced Auto. Will be putting it on today. I still suspect the control box could be bad too. My RV tech said operating under low voltage could damage both. Had just resolved issue of coach/chassis batteries being crossed. Had installed two new coach batteries and still couldn’t hold a charge. Once we found and corrected this, I suspect the damage was done. Will report back yet today, once I install new motor.

    Sir, you are a godsend to this MH DIYer. Thank you so much!

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