Re: I-4 Hitch

Posted by Wardner on August 12, 2007 at 12:23:50 from (4.154.244.29):

In Reply to: I-4 Hitch posted by Harold H on August 10, 2007 at 08:35:37:

It's called a torque multiplier, not to be confused with a IH torque amplifier. Snappy used to sell the high ratio unit for around $1800. It is probably still in the Snap-On catalog but I bet the price is higher. I got mine at an auction for $100. Most people get the 4 to 1 multiplier. That tool would have been of no use to me on this recent job. Ya, I have several people who like to borrow my multiplier.

I have never taken my multiplier apart but I believe there is a double reduction planetary gearset inside. The input uses a standard 1/2 ratchet. The output is sized for 1" drive sockets. An adaptor for 3/4" drive comes with the tool. Goto eBay and search on "torque". You will see a bunch of different multipliers. My unit weighs about 40 lbs and can be difficult to use at times. I have four 1" or 7/8" upside-down vertical bolts to remove on this tractor. I am not looking forward to those.

My multiplier is probably rated for around 5000-6000 ft/lbs. I was on a job about 10 years ago where it wasn't enough. Fortunately, I had another customer who built high pressure heat exchangers and I was able to borrow their 400,000 ft/lb hydraulic wrench.

There was a recent thread on the YT tool forum about torque multipliers. It might have been four or five weeks ago,

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