Locker in AMC20

[grignac48]

Anybody put a Lock right in an AMC20? I got a Power trax lock right and dissassembly was ok. All reassembled and then I put the Pinion shaft back in and the shaft pushes the drive plates too far apart and is all wrong. I called tech support and they think the pinion shaft is too large and I should buy a new one and put bushings in to match. I will post pictures later to demonstrate. :!:

What The! :-|

[Mudrat]

Anybody put a Lock right in an AMC20?
Not yet so keep us posted. That's one of the things I'm thinking of for the Grand Waggie ...

Pat

[grignac48]

Well after alot of BS and tech support I found out that most AMC20 have a Pinion shaft of .754". I have a heavy duty Differential assembly with a 7/8" shaft. The locker is designed for .754. I bought it from Rocky Road Outfitters and They only allow in store credits for returns. So now I am stuck either buying a replacment shaft and installing bushings and shims or replacing the differential assembly or selling this kit and buying something else. :(:

I did get the front locker installed and other than needing some extra shim it went in fine. :sa: I did find all my bearings in the front need replacing. Oh well! :?:

[cheapjeep]

I cheated and paid to have mine put in. I have had the rear in for about 3 years and the front for 2 years. I have not had any problems other that unwanted lane changes when I get on it hard or get off of it quickly. I fixed that by making sure my tires where the same dia. With my old tires I had to keep one at 28 pounds and the other at 29.

[Penguin]

I cheated and paid to have mine put in. I have had the rear in for about 3 years and the front for 2 years. I have not had any problems other that unwanted lane changes when I get on it hard or get off of it quickly. I fixed that by making sure my tires where the same dia. With my old tires I had to keep one at 28 pounds and the other at 29.

Hey you just answered a question running through my mind. =D>
I was wondering the other day why my jeep now changes a different direction. After reading your post I realized I replaced the rear tire with the spare.

[grignac48]

Well after several weeks and a couple of Emails Rocky Road responds that they will help me out at their cost. Sounds good. The only solution they had was ARB air locker for an additional 550+ dollars. I call and make the arrangments to have the old unit sent back. Then I get an email from them saying they will sell me a special order replacment carrier and shaft for my "rare" unit. This will allow me to use the unit I just returned for 20+ dollars. I checked and found that they manufactured a couple of thousand of these untill they redesigned it. Basically if you have a limited slip you get no increased performance with a power trax locker. So do I leave it alone? Or replace the whole axle? Or do I put a full time locker in? Some have had to brace the AMC 20 and like it. Any ideas? Suggestions. My head is spinning. :!:

[scrambled]

Call up Randy's Ring and Pinion. they treated me very well with every purchase I have made. You can haggle with them also so don't be afraid. I have a Detroit in my AMC 20 and haven't trussed it and it has held up fine.

[grignac48]

:(: I finnally called again and Rocky road failed to come forward with a solution. They are sending the part back. I guess I will have to sell it on EBAY. Anyone interested?

Think twice before you use this company. I started this in May and it is now end of July!

[Mudrat]

Bummer dude - sorry to hear your 'getting the shaft' (sorry, it's Friday). Did you price the replacement shaft and kit?

Mudrat

[grignac48]

Got lucky found a carrier on Ebay cheap. Now I can used the locker I bought. I was trying to put the original carrier back in but I could never get the spider gears lined up for the shaft to go through it. I about ruined my axles. :oops:

I hope this ends my dealings with the rear axle.

Totals: :-|
7 phone calls
May 5 - August 15
More money

Won't do buissness with Rocky road outfitters 111!!!


All done =D>

[Mudrat]

I hope this ends my dealings with the rear axle.
All done =D>
I just started mine - - - - again :razz:
OK, so I've gotten Erin's YJ 'bout done and over to the inspection station (yea Virginia :(: ) Just need to install the tune machine and speakers.

So I figure it's time for me to get back to fix'n my rear brakes in the CJ.
I stuffed a late 80's HD-AMC20 axle under there with a 4.56 Detroit replacing the stock one with an open 3.73.

The plan is to strip all the BS off it - old shock mounts, the bent Chebby chit the PO had installed (tired of bending and tweaking trying to get the brake pads set up right, and maybe the original perches??
I cheezed out and bought a whole setup from TSMMFG (http://www.tsmmfg.com/)

http://members.cox.net/mudrat/HD-AMC_20/brake-contents-1.JPG

Got the axle out and up on the work bench - a task when one is by one's self! I aint big enough to clean and jerk this thing soooo .... with a 2 ton chainfall and a dog chain - got'r up there :oops:

http://members.cox.net/mudrat/HD-AMC_20/axle-lift-1.JPG

And of course the obligatory cheez shot with my likeness :P

http://members.cox.net/mudrat/HD-AMC_20/axle-and-punkn_head.JPG

So I unbolted and pulled the axle shafts, stuffed rags in the ends and figured now is the time to replace the seals and bearings too. But what did I find??? Spun splines on the long side :twisted:

http://members.cox.net/mudrat/HD-AMC_20/spun-spline-1.JPG

http://members.cox.net/mudrat/HD-AMC_20/spun-spline-2.JPG

So instead of just changing the bearings, I'll be changing the shafts too. And probably jerking the diff to inspect the splines in there too :twisted: :twisted:

Stand by for more as this project progresses ...

Pat

[ROBERT11]

Hey Rat, I work out, all you had to do was call.

[Mudrat]

Hey Rat, I work out, all you had to do was call.
I know you do 'Mongo' :t: But I have no clue what your schedule is these days (days or night at HQ????) or if the spousal unit will let you out to help ;-)

You know your welcome by anytime - - especially being only 1/2 mile away :mrgreen:
Not a lot of confidence in the brakes holding. This is a weld by the PO! :idea: :shock:

http://members.cox.net/mudrat/HD-AMC_20/Tack_weld%20P-side-2.JPG

Spring perch weld ....

http://members.cox.net/mudrat/HD-AMC_20/Bugers-1.JPG

Whacked off the 'C' part of the brake mounts - really NOT a lot of confidence :idea:
http://members.cox.net/mudrat/HD-AMC_20/tube-end-P-2.JPG
Cleaned and primed ...
Drivers ...

http://members.cox.net/mudrat/HD-AMC_20/Drvr_side-done-primed.JPG

Pass ...

http://members.cox.net/mudrat/HD-AMC_20/P-side_done-primed.JPG

Now to get the shock mounts off .. . ..

Pat

[ROBERT11]

Days for the most part and a duty phone at all times. Major install going on now so hours tend to vary.

[Mudrat]

Got both sets of shock mouints off today and the axle is comming clean. Now I havie to fab some shock mounts - get axles/beaings and einstall.

Pa