Rear e-locker does not engage

[subzali]

Also, if you search locker rebuild, you'll get looooots of pictures. There's a thread by landtank and another with a PDF attachment and they're both good.

Yep, I've seen the threads was just hoping I wouldn't have to go that far. I see if this turns into a wheeler it will need some pm down there. Like @Tools R Us has stated that o-ring was not looking good and moisture was obviulously getting in there at least a little. Here in CO where it's pretty dry

 

[subzali]

Going to bump this thread and tag on. Hopefully @Tools R Us or some other guru may have some input. My rear e-locker stopped working. Tonight I got both rear wheels up on jack stands and checked things out.

-Limit switch passed the FSM test for continuity.
-CDL is locked and showing constant illumination.
-I can hear the locker motor run when I switch to rear lock, and running back when I switch the lockers off.
-As I left the switch on rear lock, I spun one rear tire. Looked across and the other rear tire was spinning the opposite direction. But the locker never engaged.

Can someone help me understand what would keep the locker from engaging if the motor works as it's supposed to?

Helped the shaft along and cycled it a few times then out it all back together. Went for a short drive and had successful engagement every time. So going to call it good until I have another problem. Will do some more reading in case I have to get into the guts of the thing, which it sounds is the ultimate fix. Thanks to everybody that responded.

3-year bump. The locker actuation progressively got worse from this last post until December 2018 it almost got stuck in the engaged position which would have been bad for my Christmas celebration that year. Then in summer 2019 it wouldn’t actuate at all. With corona I finally decided to dive in and tackle it. Lots of good threads with pics that helped, but the revelation came from this picture, which I only found in a couple of the many threads on the topic:

I realized I couldn’t get the spring assembly off the cover. And it was stuck, wouldn’t spin. This is why all my electrics worked, the motor spun and the gears rotated through their range of motion without moving the shaft. So I grabbed it gently with a channel locks and got it to come out. Cleaned and greased up the bearing surface in the cover, put it back together, and worky worky perfectly now. Centered the spring assembly between the stops, followed @landtank suggestion of putting groove 5-6 of the actuator rod in line with the centerline of the small driven gear (about 2 9/16” protruding), and under power it ranges from about 2 3/8 to 2 7/8 extended (just like @RavenTai tells us to do).

So anyone having trouble in the future make sure you can disassemble the thing to its component pieces pictured and then you will be in a position to determine what fix needs to be applied.