Thread: Uber Axle Tech

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  1. #1 Uber Axle Tech 
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    Torque Specifications

    For all the times you have been working on you jeep, or what we call our jeeps, and realize that your FSM doesn’t have the torque specs for that ford 9” or Dana 60 you swapped. Instead of going out to buy a FSM just for a rear axle. I have done some research and have put together this nifty list of torque specifications for common axles that we swap into our rigs.

    Dana 44

    Ring Gear Diameter=8.500"
    Pinion shaft Diameter=1.376"
    Ring Gear Bolt Count=10
    Pinion Spline=26
    Cover Bolt Count=10

    Carrier:
    3.73 & Numerically Lower
    3.92 & Numerically Higher

    Pinion Preload (LB Inch)........................................14 TO 19
    Back lash.............................................. ...............0.006" TO 0.010"

    In (LB-FT)
    Bearing caps bolts…………………………………...................60
    Ring gear bolts……………………………………......................60
    Differential cover bolts……………………………..................20
    Knuckle to spindle nuts………………………….................…65
    Lower ball joint (first torque)……………………................30
    Upper ball joint……………………………………......................100
    Lower ball joint (second torque,
    after upper ball joint is torqued)………………............……70
    Ring to end upper ball joint……………………….................50
    Steering arm to knuckle nuts…………………….............….90
    Lug Nuts…………………………………………...........................120

    Front wheel bearing torque procedure
    Step 1: Torque to 50 LB while spinning hub
    Step 2: Back off, then torque to 35 LB for automatic, or 50 LB for manual hubs
    Step 3: Back off 3/8’s of a turn for automatic hubs, or just enough to free the bearings (1 LB) for manual hubs
    Step 4: torque front wheel-bearing outer lock nut to 160 LB

    Dana 60

    Ring Gear Diameter=9.750"
    Pinion shaft Diameter=1.626"
    Ring Gear Bolt Count=12
    Pinion Spline=29
    Cover Bolt Count=10

    Carrier:
    4.10 & Numerically Lower
    4.56 & Numerically Higher

    Pinion Preload (LB Inch).........................................17 TO 30
    Back lash.............................................. ................0.006" TO 0.010"

    In (LB-FT)
    Bearing cap bolts……………………………...................…..…85
    Ring gear bolts…………………………………......................…110
    Differential cover bolts………………………..…..................35
    Kingpin-to-end forging………………………..…...................500-600
    Knuckle bearing cab bolts………………………..................70-90
    Steering arm to knuckle nuts……………………...............70-90
    Spindle to knuckle nuts………………………….…................65
    Rear axle shaft to hub bolts (full float)..……….…........115
    Rear axle shaft bearing retainer nuts (semi-float).….25-35
    Lug Nuts…………………………………………..........................120

    Front wheel bearing torque procedure:
    Step 1: Torque inner nut to 50 LB while spinning hub
    Step 2: Back off, then torque to 35 LB for automatic hubs, or 50 LB for manual hubs
    Step 3: Back off 3/8’s of a turn for automatic hubs, or enough to free the bearing (1 LB) for manual hubs
    Step 4: torque front wheel bearing outer lock nut to 160 LB

    Rear wheel bearing torque procedure:
    Step 1: Torque inner nut to 50 LB while spinning hub
    Step 2: Back off enough to free the bearing (1 LB)
    Step 4: torque rear wheel bearing outer lock nut to 160 LB

    Dana 70

    Ring Gear Diameter=10.50"
    Pinion shaft Diameter=1.750"
    Ring Gear Bolt Count=12
    Pinion Spline=29
    Cover Bolt Count=10

    Carrier:
    4.10 & Numerically Lower
    4.56 & Numerically Higher

    Pinion Preload (LB Inch)........................................20 TO 35
    Back lash.............................................. ...............0.006" TO 0.010"

    In (LB-FT)
    Bearing cap bolts………………………………..…..................85
    Ring gear bolts…………………………………….....................105
    Differential cover bolts…………………………….................35
    Axle shaft to hub nuts…………………………...…...............115
    Lug Nuts…………………………………………..........................120

    Rear wheel bearing torque procedure:
    Step 1: Torque inner nut to 50 LB while spinning hub
    Step 2: Back off enough to free the bearing (1 LB)
    Step 4: torque rear wheel bearing outer lock nut to 160 LB

    14 bolt (LB FT)


    In (LB-FT)
    Bearing cap bolts…………………………….……...................135
    Ring gear bolts……………………………….……....................120
    Differential cover bolts……………………….……................20
    Pinion bearing to support housing…………………...........65
    Carrier adjusting collar lock bolts…………………...........65
    Axle shaft to hubs nuts…………………………….................115
    Lug Nuts…………………………………………..........................120

    Rear wheel bearing torque procedure:
    Step 1: Torque inner nut to 50 LB while spinning hub
    Step 2: Back off enough to free the bearing (1 LB)
    Step 4: torque rear wheel bearing outer lock nut to 160 LB

    Ford 9” (LB FT)

    10 Bolt 3rd Member
    Ring Gear Diameter=9"
    Pinion shaft Diameter=1.313"
    Ring Gear Bolt Count=10
    Pinion Spline=28

    Pinion Preload (LB Inch).......................................14 TO 19
    Back Lash.............................................. .............0.010" TO 0.016"

    In (LB-FT)
    Carrier to housing nuts……………………………................40
    Bearing cap bolts…………………………………....................85
    Ring gear bolts…………………………………….....................85
    Carrier adjusting collar lock bolts…………………...........22
    Pinion bearing support to carrier…………………............45
    Axle shaft retainer nuts……………………………................40
    Lug nuts………………………………………….........................100


    If anyone finds these numbers don’t work or differs from you FSM please let me know. I got these numbers from two FSM’s I have and the Internet. I’m sure over the years and with all the different models of axles the torque numbers may change. This is only a guide.

    I hope this helps.
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  2. #2  
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    i will keep adding as i find new info.
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  3. #3 Re: Uber Axle Tech 
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    MODEL 44A AXLE

    DESCRIPTION SPEC.
    Type .................... .Semi-floating Hypoid
    Axle Ratios........................ .3.55/3.73
    Ring Gear Diameter .......... .216 mm (8.5 in.)
    Gear Backlash . . . .0.13–0.20 mm (0.005–0.008 in.)
    Pinion Depth ............ .109.52 mm (4.312 in.)
    Brg. Perload, Pinion (New) ...... .2.26–4.52 N·m

    (20–40 in. lbs.)
    Maximum Carrier Spread.... .0.51 mm (0.020 in.

    DESCRIPTION TORQUE
    Bolts,Diff.Cover .............41N·m(30ft.lbs.)
    Bolts, Diff. Bearing Cap ........85 N·m (63 ft. lbs.)
    Bolts, Ring Gear............ .108 N·m (80 ft. lbs.)
    Screw, ABS Sensor.............8 N·m (70 in. lbs.)
    Nuts, Brake Backing Plate ..... 61 N·m (45 ft. lbs.)
    Nut, Pinion Gear Minimum . . .298 N·m (220 ft. lbs.)


    http://www.yukongearandaxle.com/randpcat.pdf
    go to page 11 of this PDF and they call the ZJ D44 "Heavy Duty"
    for the VIPER, CORVETTE, and the Grand!!!????
    Dana Spicer D44 Heavy Duty (HD) Differential

    Ring Gear Diameter 8.5”
    Ring Gear Bolts 10
    Cover Bolts 10
    Carrier Breaks None
    Yoke/Pinion Spline Count 1.625” / 29
    EPIC POLYMER RACING
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  4. #4 Re: Uber Axle Tech 
    interesting to note that the hated D44al has a bigger pinion at 1.625 than a ford 9", and the same size as a D60. I dont think anyone has broken the ring gear on their 44al. too bad it has those damn c clips.
    NINER
     

  5. #5 Re: Uber Axle Tech 
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    interesting to note that the hated D44al has a bigger pinion at 1.625 than a ford 9", and the same size as a D60. I dont think anyone has broken the ring gear on their 44al. too bad it has those damn c clips.
    I am one of the few who apperciate the "dreaded" Dana 44a. I had one in my TJ, trussed and locked, and was very pleased with the result. Good axle, as long as you truss and skid it. The axle shafts are 30 spline. You could go down to 4.56 gear ratio with the axle. Rear discs made the C clip design not so bad. The aluminum center section made for a lighter rear axle if you were interested in weight reduction.
     

  6. #6 Re: Uber Axle Tech 
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    The issue with the 44A was never strength....simply lack of aftermarket support, and the fact that the aluminum housing gets beat up on the trail, and that it likes to eat bearings.
    Fortunately, we're not getting nearly as much government control as we're paying for.
     

  7. #7 Re: Uber Axle Tech 
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    exactly what I was trying to convey. The axle tubes apparently liked to wallow out in the center section sleeves as well. Trussing usually solves this problem. I had an integrated skid in with the truss so the center section wouldnt take a beating on the rocks.
     

  8. #8 Re: Uber Axle Tech 
    Senior Member nate's Avatar
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    FYI the little book that comes with Yukon gears has all this info. I keep a copy in my toolbox.
    Last edited by nate; 12-05-2007 at 09:07 PM.
    03 Subaru WRX
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  9. #9 Re: Uber Axle Tech 
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    Quote Originally Posted by naturalbornmudder View Post
    I am one of the few who apperciate the "dreaded" Dana 44a. I had one in my TJ, trussed and locked, and was very pleased with the result. Good axle, as long as you truss and skid it. The axle shafts are 30 spline. You could go down to 4.56 gear ratio with the axle. Rear discs made the C clip design not so bad. The aluminum center section made for a lighter rear axle if you were interested in weight reduction.

    if you get a wj version the alxe doesnt have C clips, i had no probems running 35" tires till i filled the thing up with water and sand and cooked the bearings
    99 WJ, D60/14B, 5.38s, 203/D300, 39.5"s, H1s


    It was a jeep thing, but that shit broke
     

  10. #10 Re: Uber Axle Tech 
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    anybody have the torque specs for an 8.8 ford axle??
    Quote Originally Posted by OverKillZJ
    Fuck you. How's that for in touch with my emotions?
     

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