FJ45 full floating axle shaft length

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I took the some pictures of the non-toyota seal with part number/manufacture, let me look for it.

I would recommend to get rid of those drums on your FF, back then. I spent a small forune on all new Toyota brake drums parts completed with brand new Toyota (not aftermarket) drums, shoes, slave cylinders, brake lines,...it took a lots of adjustments to make it works properly and it barely worked when it got wet, I was standing on the brakes when the truck stopped on steep incline to keep it from sliding backward. I finally gave up and did the disk brake swap for 4 corners and never look back.

Here's my write up for swapping the rear FF to disks using all Toyota parts:

Rear Full Floater Disk Brake Conversion
 
DanS HJ-45 said:
I have a set of axles that I believe came from a firetruck or something (they were painted red--and not just by a rattle can--and I don't know who would do that except a fire department), and they had the heavy brake drums. Here's the rear all finished:


The brake shoes are roughly a third again as wide as the standard 40 series brakes, and CDan can get them (also the wheel cylinders, etc...)


What's really interesting is that the front axle was matching--and had what I beleive is a later model housing. It has a different gusset (probably not the right term) between the U bolts than the other axles I've got (79+). Not real sure what the deal is, but I definitely have the hub nut seal FF rear

....

Dan
Click to expand...


Dan,

Not sure if it helps you or not but that's the way they sold the 45's in the late 70's in Canada. The larger finned 4 wheel drum brakes/parts are available from the dealership for an arm and leg (here anyways).

If anyone is curious they also have different backing plates so it isn't possible to just throw them on the front (or back) of an early 40 for increased brake lining area.

:beer:
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100_8272a.webp
 
mustardfj40 said:
I took the some pictures of the non-toyota seal with part number/manufacture, let me look for it.

I would recommend to get rid of those drums on your FF, back then. I spent a small forune on all new Toyota brake drums parts completed with brand new Toyota (not aftermarket) drums, shoes, slave cylinders, brake lines,...it took a lots of adjustments to make it works properly and it barely worked when it got wet, I was standing on the brakes when the truck stopped on steep incline to keep it from sliding backward. I finally gave up and did the disk brake swap for 4 corners and never look back.

Here's my write up for swapping the rear FF to disks using all Toyota parts:

Rear Full Floater Disk Brake Conversion
Click to expand...

Oh yes. I've read it. If something goes screwy with my axle, that's exactly what I'll do. I figure since I've got them rebuilt I'll give them a try. I don't know why I didn't think to search and look at that writeup BEFORE I rebuilt them though.....

/thread drift.

Dan
 
Thanks for the help on the shaft lengths, I've added it to the site :cool:

Fwiw we ran into an anomaly of sorts today. RufusTheDufus has a 7/80 HJ but has two wheel cylinders (=early), 8 backing plate bolts (=early) but the it uses the later 8/80 & up model 90310-35001 inner axle seal as opposed to the seal in the nut. I had never seen that combination before but then again most of the full-floats I see are later 40/60 imports or 80 Series stuff.
 
I measured the diameter of the machined face that the axle seal rides on. It's 35mm.

Here's a couple photos of the setup in my axle. The truck is a 7/80 Australian market HJ45. I assume it's the original axle but have no way to verify it.

axle-seal-1.jpg


axle-seal-2.jpg


You can see the seal inside of the spindle in the second photo.

Is the thick collar and lock ring a better way to identify early/late axle seals? I guess the seal inside the spindle is an easy indicator too.

So the later style full floating axles are smaller in diameter?
 
I'm not sure on the axle seal surface OD, I'm not by any of those seals right now (if you look closely at the ones we sent you it should have the ID shown in mm), but yes the later FF's had a 35mm seal surface unless they were OE replacements in which case some came with 36mm, for that reason we stock both style but have only sold maybe 4 of the 36mm in 5 years that I can remember.
 
The Cruiser outfitters full float axle chart for 60/62 shows the passenger side as the long side, I assume that's a typo.

I somehow came to understand that the long side 60/62 full float axle was useable in the 40 series housing, and only the short side was different. The chart shows the 6x long side almost 3" longer. So, it looks like I got it ass-backwards. Can anyone confirm that I need to source the long side to transfer my HJ61 FF cable locker rear diff to to a 40 FF axle housing?

Thanks
Bill
 
billmc said:
The Cruiser outfitters full float axle chart for 60/62 shows the passenger side as the long side, I assume that's a typo.

I somehow came to understand that the long side 60/62 full float axle was useable in the 40 series housing, and only the short side was different. The chart shows the 6x long side almost 3" longer. So, it looks like I got it ass-backwards. Can anyone confirm that I need to source the long side to transfer my HJ61 FF cable locker rear diff to to a 40 FF axle housing?

Thanks
Bill
Click to expand...

Long is always the LH side, I'll peak at our link, likely a typo.

Shorts are the same 4x/6x, longs are different
 
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