Disc brake axle identification help

[agouge888]

Got this disc brake axle with my FJ40 at the time of purchase. Previous owner told me he thought it was from a 79 FJ40 and he had planned to do a disc swap. Forward a few years later and I start looking at the axle and I’m not so sure it’s a 40 axle. Is there any way to I.D. this axle? Any way to know if it’s from a 40,60,70,80? Any measurements or distinguishing characteristics I can look for? Pics below.....

Thanks and let me know.
agouge888

 

[agouge888]

A couple more pics......

 

[3_puppies]

it's a RHD axle, looks like a large bolt pattern knuckle which makes it 79+.
you can measure the spring mounts or the wheel mating surface and that would tell you if it is a 40, 60, 70 axle
Not sure what kind of warn hubs those are, it is different from the rotor out

 

[cruiserpilot]

ARB line attached?? Looks a air line drilled through the front of the pumpkin.
The hubs look like the kind I had on a ford 1/2 ton. Not seen them on a Toyota before.
The bolt pattern on the pinion looks like small pattern, coarse spline to me, indicating
it might be '79 but I'm not completely sure about that.

 

[pb4ugo]

I'm more interested in finding out more info on the internal splined hubs that are that frt end. Are they Toyota or Warn or what? It looks like they might be aluminum.

 

[Poser]

They were part of a Warn birfield eliminator kit that changed the front axle shafts from the birfield CV design to chromo 4340 axles and Dana 44 u-joints. Used different spindles, wheel bearings, wheel bearing hubs and lockouts.


Warn claimed "one-ton strength" because the outer axle shaft was 1.31-30 spline, the same as factory Dana 60 outer axle shafts, and utilized the same lockout/wheel bearing hub design.


Sold A LOT of them for a few years...

During that same time in 1998-99, I installed a Dana 60 in the front of my 40 and have not broken a birfield since...

 

[Rock40]

It's got the ARB air line drilled in the oddest spot.....should be back on the 3rd member itself. If it's built as @Poser suggests AND it has an ARB.....you're a fairly lucky fellow.

 

[Mace]

I cannot think of any way to install an ARB in that fashion. Likely a breather for the axle.

 

[jim land]

i remove my warn birfield eliminator back in 2010 and got my money back from warn , it was lifetime warranty and they stop making part for it , i probably broke 7 shaft between 2004 -2010 , they always send me a new shaft every time it broke , and they only need an email with a pic of the damage as a proof.

the problem was the shaft ears hitting the trunnion bearing when high rev with the wheels turn ,clearence inside the knuckle was very tight

the hub was a 1 ton style ,like a d60 , if someone could make a chromo birfield with the same lenght and size as the warn shaft it would be the best set-up i can imagine for a 40 axle

 

[jim land]

The shock mounting tabs dont look like a 40 series

 

[pb4ugo]

i remove my warn birfield eliminator back in 2010 and got my money back from warn , it was lifetime warranty and they stop making part for it , i probably broke 7 shaft between 2004 -2010 , they always send me a new shaft every time it broke , and they only need an email with a pic of the damage as a proof.

the problem was the shaft ears hitting the trunnion bearing when high rev with the wheels turn ,clearence inside the knuckle was very tight

the hub was a 1 ton style ,like a d60 , if someone could make a chromo birfield with the same lenght and size as the warn shaft it would be the best set-up i can imagine for a 40 axle

Yep! After installing a lockrite in the stk 40 frt end around the late 80's or early 90's and constantly blowing birf's, I narrowed a dana 44 and installed an ARB. This was b4 Marlin tried the marfield and longfields were not around yet. I never broke a 44 axle, only the axle joint, which in turn destroys the yokes. A Dana 44 axle joint is not 1 ton strength.

 

[jim land]

I never broke a shaft , in my case it was the ears that broke after taking a bite on the trunnion bearing , most of the time the u joint wasn't broke

 

[jim land]

like this