What's the diff ?

[TRUCKMAKER]

Mario, what kind of torque tools are you using for that 1400 lbs, a torque wrench and multiplier?

[Supermario]

Originally Posted by TRUCKMAKER

Mario, what kind of torque tools are you using for that 1400 lbs, a torque wrench and multiplier?

It's actually a hydraulic wrench made by. HYTORC . Electric motor running a hydraulic pump. Using a trigger you power a small cylinder inside the wrench tool. It causes the drive to turn. End of stroke you release the switch, cylinder retracts / ratchets and start over. Turn up the pressure, the tool can torque up to 2,500 ft lbs.

[Lil Giants]

Originally Posted by TRUCKMAKER

Mario, what kind of torque tools are you using for that 1400 lbs, a torque wrench and multiplier?

Seeing Mario's update, that's the 1st question I thought of too...

1998, me & the neighbor pulled the front diff from an Eaton axle that's in my Panther Steiger 325hp 4wd. Re-assembling the pinion into its housing, the nut needed to be torqued to 925ft-lbs. We used a Snap-On 5' long torque wrench capable of 600ft-lbs with a 3:1 multiplier. We stuck the handle of the multiplier in the tractor's draw pin hole, chained down the pinion housing to the drawbar & proceeded to get the nut to the 925ft-lbs setting. I still remember to this day how much the handle of the multiplier flexed & I was more than just a little scared that our jerry-rigging could come apart to kill us both.

I bought a Landoll field disc last yr, the blades are 5/16 width & unfortunately I hooked a big enough rock below the surface that I bent a few blades. The gangs are torqued to 1150ft-lbs... now I know what to ask when I search for a fix-it shop to make the repair someday.

Thanx for the thread Mario, I wondered how such high torques were achieved. Could you take a pic of the torque wrench you used? Curious to see what it looks like.

[Supermario]

We have 2 types of hydraulic wrench at the shop. The 3/4 drive can go up to 1,500 ft lbs . The 1" drive can go up to 2,500.
And we have two pump styles. The first pic is the feild service version





This one is our shop pump. Both are capable of 10,000 psi.



This is the 3/4 drive version. The reaction arm cam be rotated to almost any position. Also comes with an extension arm when required. That's a 1" 5/16 size socket you see on it.





This is the 1" drive version. The reaction arm also can be adjusted on this one and hard to believe it can handle 2,500 ft lbs but it does






This may help to give a size perspective sitting with my 1/2" impact. Both are very light and easy to handle. It's the special hoses which connect to the wrench are a pain. They're very stiff and stubborn but I guess it makes sense when your dealing with pressures up to 10,000 psi.






They are available for rent also. The website has a list of distributors. Hytorc.com

[BRICKNICK]

Just awesome stuff Mario...I as a heavy truck/diesel mechanic really appreciate seeing this stuff since the most intricate parts of heavy equipmt repairs I get to do is put a track back on or repair a bad hydraulic line or hose . Maybe a starter or a coolant leak. But I never really get to tear into our loaders or dozers like this. Great stuff bud, thanks for sharing it with us.