Rebuilding the axles

10/27/2008

After the untimely death of my (sniff) beloved beer fridge I needed something to get my spirits back up.  Working on the Jeep usually does that for me.  Not to mention, after tropical storm Fay, getting to the boat has become a bit more work than I like, as a twelve foot section of dock is still missing.  The weather has finally changed and the garage is a comfortable 70 something rather than a sweltering 90+.

I've had all summer to think about the next step, I considered a spring over lift, lockers, and all the other goodies.  When I rolled the Jeep into the garage the lights mounted on the light bar above the windshield just touched the garage door.  So I did some measurements.  I rolled him into the garage with 4.5 inches of lift and the light bar sitting on 33 inch tires.  I want to park it in the garage when it's done, so I have to make sure not to go too crazy with the lift.  I'm planning on rolling it out on 35 33 inch tires, a six four inch suspension lift and the 1 1/2 inch shackle lift that was already there.  Even with the light bar gone that will be close, so the spring over is out.  Notice I didn't spend a lot of time worried about ground clearance, approach or departure angles and performance, it's a beach buggy not rock crawler.  The second consideration was lockers.  I've decided to go with a limited slip differential (D'oh!) Lock-Right locker. (got a hell of a deal on a Lock-Right locker, can't go bigger than 33 inch tires with it, so went with a shorter suspension lift to make it look proportional)  Price is about the only real thought that went into that decision.  As much fun as it would be to hook up on board air and all that cool stuff... I have to keep talking my self down and remembering that I live in Florida and I don't suspect there will be any mountains sprouting up around here anytime soon; no need to over engineer it.  I also have a buddy that used to run a Jeep around Iceland, he said he had excellent results with this set up in snow ice and rock, all of which are much more challenging than anything I'll likely face on a logging trail or beach here in Florida. 

Another consideration is the two part axle installed by the factory in the AMC 20 rear end.  If you're going to run big tires and hit them with some horse power a  single piece axle replacement kit is smart.  I'll be hitting the tubes with the welder as well, bigger tires and more horse power could lead to the pressed tubes moving in their sockets.  Wouldn't have even thought of this if it weren't for this tech article:  Link

The last consideration I had was the brakes.  I hate drum brakes and considered installing disc brakes on the rear axle, but I hate the cost of the conversion more than I hate drum brakes.  The drum brakes stay.

And without further adieu... here are some pictures:

Link to front axle:  LINK

27 October 2008

The degreasing and disassembly begins.

Got the first drum off, no wonder I had such difficulty stopping. This is a picture of a very well lubricated brake pad. The good news... the drums look like brand new, they were very well protected from from any contact with the pads.

8 November 2008

New parts!!

Another well greased brake on the other side.

The first axle removed.

It's finally gutted.

Time to start cleaning and painting before the re-assembly.

10 November 2008

Spider grears removed from the carrier.

Shims, shear pins, and locker sitting in the carrier.

Spring pin, and springs installed. This job is complete.

11 November 2008

Piece of crap gear puller, keeps breaking. Spent an hour cutting and drilling making more stout parts for it.

Ready to go again with new thicker metal and shoulder bolts.

Same results...

15 minutes with a dremel tool...

a little prying and hammering...

Proof that the laws of nature work. If it doesn't fit; force it. If that doesn't work; get a bigger hammer. Problem solved.

Twenty plus years of grime removed. This axle was date stamped 11-28-1984.

14 November 2008

Four 1/2 inch stitch welds around both tubes to ensure they never spin.

One final hit with the wire wheel and wipped down with de-greaser, time for some priming.

The black paint is finally applied.

15 November 2008

Time to complete the de-greasing and painting of some of the smaller pieces.

Primed...

Painted.

19 November 2008

I intend to turn this pile of parts into something resembling a drum brake.

One beer later... Ta-Da!

22 November 2008

Charlie gets in on some of the action.

23 November 2008

Tube seals installed, time to check bearing clearances before pressing them onto the axle shafts.

Both brakes rebuilt.

26 November 2008

Thanks to the fellas at the Navy's South East Regional Maintenance Center. Five thousand pounds of pressure and the bearings are set in place.

27 November 2008

Got one side installed, now it's time to watch the Lions lose again and eat some turkey. Happy Thanksgiving.

29 November 2008

The rear axle has been refurbished. On to the front...

 

 The rear axle work is complete.  It's shiny as new and more capable than when it was produced 24 years ago.  The only seal not replaced was the yolk seal.  It required some special tools, which I don't have, and was replaced a couple of years ago any way.  It should be good for years to come. 

Now on to the front axle, but not until after Christmas.

 

 

 

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