Full float info/parts

[stevebradford]

I have a couple factory full float axles now and am working on building another. I spent hours searching here and there so I though i would put what I found into one thread.

This is all info I found on here please correct me if I’m wrong and feel free to add anything.

other info saved here.
Some info saved

Thanks.

Steve

 

[stevebradford]

Part numbers.

Hardware.
Drain plug Allen head with magnet 90341-18021
Hubb studs 90116-08325
Hub stud nuts 90170-08204
Cone washers 42323-60010

Bearing/nuts/washers.
40,60,80 Full float Tripod socket part number for wheel bearing nut 09509-25011
40,60 Full float wheel bearing lock nut post 08/80 axles 42427-60021
40,60 Full float wheel bearing lock washer post 08/80 42428-60011
80 bearings 90368-49087-77 x2 90368-45087-77 x2

Seals.
40,60,80 axle shaft seal 90310-35001
40,60,80 replacement axle shaft seal 90310-36003
40/60 hub dust seal 90313-93001
80 hub dust seal 90310-35001
40,60 Full float Hub to spindle seal 43422-60040
80 full float hub to spindle seal 90311-62002
Pinion seal 90311-38047

Gaskets.
Drain plug gasket 12157-10010
40,60 Ff axle flange to hub gasket 43422-60010
80 axle flange to Hub gasket 43422-60040
Differential carrier to housing with notch for factory locker gasket (paper) 42181-60070
Differential carrier to housing gasket (cork) 42183-35010

E-locker or cable locker.
Fork, Diferential lock shift 41451-60010
Sleeve, Rear differential lock 41453-60010 - 41453-60011
Cover, rear differential lock 41456-60010
Cylinder Assy, Rear differential lock 41460-60010
RING O (FOR REAR DIFFERENTIAL LOCK CYLINDER) 96711-24023
BALL (FOR REAR DIFFERENTIAL LOCK CYLINDER) 90360-10003
BOLT (FOR REAR DIFFERENTIAL LOCK CYLINDER SET) 90105-08114
BOLT (FOR REAR DIFFERENTIAL LOCK SHIFT FORK SHAFT SET) 90105-06052
LEVER, REAR DIFFERENTIAL LOCK CYLINDER 41464-60010
BUSH(FOR REAR DIFFERENTIAL LOCK CYLINDER LEVER)90386-09009
RETAINER, REAR DIFFERENTIAL LOCK SPRING 41465-60010
SPRING, COMPRESSION (FOR REAR DIFFERENTIAL LOCK RETAINER) 90501-20083
PLUG (FOR REAR DIFFERENTIAL LOCK CYLINDER) 90341-26001
GASKET (FOR REAR DIFFERENTIAL LOCK CYLINDER) 90430-26002
BOOT, REAR DIFFERENTIAL LOCK CYLINDER 41466-60010

Brakes.
40/60Right shoe strut adjuster 47061-60011
40/60Left shoe strut adjuster 47062-60011
40/60Shoe Hold Down Spring cup 47449-30020
40/60Shoe Hold Down Spring 90501-20012
40/60Rear Brake Shoe Tension Springs 90506-18031
40/60Brake Bell Crank Tension Spring 90506-20033
40/60/70/80 Parking brake cable 47616-60010
40/60Shoe Hold Down Pin 47447-60010
40/60Rear Brake Shoe Return Tension Spring 90506-26011
40/60Rear Brake Automatic Adjust Lever 40/60Tension Spring 90506-12031
40/60Rear Brake C Washer 90213-06013
40/60 Raybestos wheel cylinder wc37690

 

[stevebradford]

Other suppliers.

New very nice hubs available from here.
Rear Axle Shaft and Hub : CruiserParts.net, Toyota Landcruiser Parts

I used a hub stud and cone washer kit from here they have several different options.
Trail-Gear Super Metal Hub Stud Kit, for 2 Hubs (300578-1-KIT)

Wheel bearing tripod socket available from trail tailor.
Rear Hub Socket

Custom length axle shafts here.
Nitro-Gear.com Nitro Gear & Axle

Ultimate Full Floater Rear Axle

Disc brake kit. I’m happy with my drums but some prefer disc.
Toyota 1960-1980 Full Float FJ40-45-60 Rear Disc Brake Kit

I got new stock length axles with long splines for the cable locker for my 40 full float here. Very happy.
Toyota Land Cruiser Chromoly 30 Spline Axle Shafts, 40, 55, 70 Series Full Float, Pair (AX TFF-FJ40)

60 series stock length full float axles.
AXTFF-FJ60

 

[stevebradford]

Full float axle Rebuilding threads.


80 axles
How-to: rear axle rebuild

Rear axle job and pics.

Full Floater Full Rebuild

rear axle service photos

 

[stevebradford]

Wheel bearing ajustment.
So manny different opinions.

Just remember too loose might be worse than two tight.

Full floater bearing adjustment...

Full floating rear axle - high preload on hub

80 axle.
Fj80 full float rear hub pre-load

The Tools R Us method.
“I would forget about the fish scale method for setting bearing preload, fish scales are for fishing. The factory method is too unreliable, and too many loose or failed front bearings in short order as a result. Use the @Tools R Us method. Torque the first bearing retaining nut to 20-30ft/lb (30 for large tyres), rotate the hub, retorque. then torque the outer bearing lock nut to 45ft/lb, All done.”

 

[stevebradford]

Building your own full float.

there’s a lot of different options out there for building your own. I’m using these axle flanges.

Axle Flanges, Rear, Toyota, Full Float
They made to fit Toyota spindles and callipers. The problem with that is it leaves you with a parking break dilemma. other company’s make flanges to fit gm calipers so you get a parking brake. I wanted to stick with Toyota so I’m going to have to use a drive shaft brake. This is the one I have.
Disc Brake Parking Brake Conversion Kit for Split Case [46550-Splitdiskkit] - $399.99 : CruiserParts.net, Toyota Landcruiser Parts

it works well the issues with them is if your not locked and have a wheel in the air it doesn’t work. Also if it gets bent you can’t drive although it dosent hang below the bottom of the tcase and there’s a skid plate.

Normally to align the flanges you would use a bar and pucks.

I don’t have these or feel like paying a thousand bucks for them. These flanges have to be aligned perfectly this sounds like it would work. (“You just have to build the outers with the axles, hubs, bearings and the plate (no seal), install the diff with a few nuts, and slide the whole assembly into place before you weld it. It was easy and I don't see how it's possible to make it anything other than perfect. The axle and diff acts as the alignment bar you're talking about.” Fast Eddy.) Perhaps not as good as alignment bar but sounds like it would work.

Also this from ruff stuff for installation of the flanges.
We install them using a trubar but a simple instalation trick would be to use a long (5') piece of heave DOM or 3" angle iron and 2 machinist squares. Clamp it about 3" off the faceplate and setup the correct length and then with the machinist squares true them to each other. Pretty simple...

I got my new hubs from here very happy with them.
Rear Axle Full Float Hub 76-90 [FTL-621/42411-60011] - $170.63 : CruiserParts.net, Toyota Landcruiser Parts

Axle seals need a insert I haven’t tried these out but they mount in the spindle in place of the bronze bushing. Full Float Seal Holder

Or forgo the axle seal and run the hubs on diff oil like most large trucks do.

Some usefull links.

Toyota Rear Full Floating Axle Flanges! - YotaTech Forums

Building FJ40/60 axles to custom widths & with Disc full float.

FJ40/60 rear full float conversion - Pirate4x4.Com : 4x4 and Off-Road Forum

Can a semi floater be converted to a FF axle?

Toyota Rear Full Floating Axle

FJ40 Full Floater Axle Build (IH8C-CLIPS)

Ruffstuff full float conversion

Toyota Rear Full Floating Axle Flanges!

 

[stevebradford]

80 series full float retrofit.

Full float 80 axle into fj55.
Custom 55" wide FJ80 rear full float axle (pictures and details)

Full float 80 series axle in a 60

 

[stevebradford]

Factory lockers.

digitalferg: Toyota 80 Series Electric Locking Differentials Retrofit for an FJ60 Land Cruiser (or other 40, 50 or 60 or even 70 or 80 series)

Found this useful tip (I haven’t tried) for those running a factory locking differential. In case of the splines twisting when the axle breaks. You machine a unused part of the middle section of the splines off. Allows you to remove the broken bit and differential.

Elocker to air conversion thread

Cable locker conversion thread.
Roma's 78 fj40 gets a refurb

Another.
Cable locker? Chilkat

Anyone fitted cable lockers to a 40?

 

[stevebradford]

Torque specs for quick reference.

Full float 60 torque specs.


Wheel Bearing Adjustment Nut Initial Torque 43 f/lb
Wheel Bearing Adjustment Nut Immediate Re-Torque 43 f/lb
Wheel Bearing Adjustment Nut Final Torque (based on drag .9-7.3 lbs) 35 -60 f/lbs
Wheel bearing lock nut 43ft-lb - 65ft-lbs
Hub studs with cone washers 23ft-lb
Differential Carrier Nuts 34 ft-lbs
Differential Carrier Retaining Nuts 35 ft-lbs
Companion Flange Nuts 160 ft-lbs
Spring Shackle Nuts 47 ft-lbs
Spring Bracket Pin Nuts 47 ft-lbs
Grease-able shackles nut without zerk 60ft-lbs
Grease-able shackles Nut with zerk 30ft-lbs
Anti inverversion bolt 15ft-lbs
U-Bolt Nuts 60 ft-lbs - 90ft-lbs
Shock Absorber Retaining Nuts 32 ft-lbs
Sway Bar End Links - 13 ft-lbs
Sway Bar to Axle - 9 ft-lbs
Drive shaft flange bolts 54ft-lbs - 65ft-lbs
Brake line to wheel cylinder 11ft-lbs

Full float 80 torque specs.

 

[stevebradford]

Other hub options to widen axle stance.

Pre 8/80 40 series axles will fit IFS front hubs widening the axle stance 2.5 to 3 inches. You will have to space your aftermarket disc brake calliper out equally to match.

Found some interesting info that 80 series rear hubs might fit a late post 8/80 40 series full float and also a 60/70 series full float rear. Widening the stance 2.5 inches. The 80 series disc brake and integrated parking brake might be nice. Haven’t tried this myself but I will be keeping my eyes out for some 80 hubs and backing plates to test this out.

Rear discs on HJ61 - questions

80 series rear hubs to disk brake 70

60 series brake backing plates on an early pre 8/80 full float (for the parking brake)

79 BJ40(wolf) resurrection

 

[stevebradford]

Full float axle measurements.

Cruiser Outfitters

Differences in 40 series shafts.
FJ45 full floating axle shaft length

Full-Float:
(measured approximately from gasket surface at hub to end of shaft)

40/55/70 Series Drivers Side: 35-7/8" (1-7/8" splines)
40/55/70 Series Passenger Side: 24-1/8" (1-7/8" splines)
60/62 Series Drivers Side: 24" (2" splines)
60/62 Series Passenger Side: 38-1/4" (2" splines)
80 Series Drivers Side: 36-3/8"
80 Series Passenger Side: 29"

Axle housing width.

Toyota Axle Widths: 21 of 'em for Axle Swaps - Roundforge

40
55.6 wms to wms

60
58.3 wms to wms
3.25 axle tube

70
55.6 wms to wms
56" wms to wms

80
63.5" wms to wms

 

[stevebradford]

Problems with breaking/loosening hub studs and dowels.

Rear Axle Hub Stud and Dowel Pin Upgrade

Full Floater Hub Stud Upgrade write up

Full Float Rear Axle Help

Rear Axle Hub Stud and Dowel Pin Upgrade

 

[stevebradford]

Running full float hubs on diff oil.

Here are some threads that mention it can be successfully done.

Front and full-float Rear wheel bearings - are they the same?

full float rear axle seal question

full float rear axle seal question

 

[Spike Strip]

Great info! Thanks very much!

FWIW, you can get a quality Hub Socket for 1/3 the price of the OTC or Toyota from Trail-Tailor:

Rear Hub Socket

(If you need me move this post so you can have contiguous postings, just say so ...)

 

[stevebradford]

All good, thanks for the info! Feel free to post anything I will add it in. Nice to have it all in one spot.

I actually bought one of those last night as well as the knuckle centering tool he offers!
Knuckle Centering Tool

Added in.

Thanks!

 

[scrapdaddy]

Man, that's a lot of good info! Thanks for taking the time putting it together.

 

[stevebradford]

Thanks! Still working on it, adding as I go. Feel free to add anything I will put it in.

 

[Willard]

This thread could not have shown up at a better time.
I was originally thinking of building my FJ6x full floater when I did a gear swap. But Monday I decided to rebuild it and use my rebuilt 3rd member out of my semi floating axle and doing a gear upgrade later.
So now I am gathering everything I need to rebuild it. I picked up a rebuild kit from Cruiser Outfitters. That includes the seals and bearings.

Based on how bad my wheel studs are I am going to replace them

Great post and if I find anything on my travels I will add them here.

 

[gregnash]

Very nice information here... @Mace Can we get this stickied in the top section?

 

[Bluebj42]

Other suppliers.

I got new stock length axles with long splines for the cable locker for my 40 full float here. Not sure if they make 60 long side ones.
Toyota Land Cruiser Chromoly 30 Spline Axle Shafts, 40, 55, 70 Series Full Float, Pair (AX TFF-FJ40)

Not only does nitro gear make 60 series ff axles they also have cut to length axles for a custom length housing.

AXTFF-FJ60

Nitro-Gear.com Nitro Gear & Axle