Hi Al, I didn't not know that the 674 came without difflock. We had 674 in the 1980s and it had diff lock. My brother has 454,495,684,3230 all from the same IH series and they all have diff lock. So does it have hole in the side of trans/diff case for diff lock control rod to go thru? I don't know the answer but looking at CaseIH parts you probably have to remove the whole hydraulic housing off the top of diff to install diff lock.
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Today's Featured Article - Product Review: JB Weld - by Staff. JB Weld is basically an epoxy glue that does an exceptionally good job of bonding to cast iron and steel along with several other materials. As I mentioned, it is so common that I have yet to buy a tractor that did not have JB Weld used somewhere. It is sometimes used so well you can't tell its there and other times used as a sloppy quick fix. Finding where and how it can be used correctly is key to whether you are using it as an "inelegant hack" or an integral solution to difficult and expens
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