Masseypride,you are about to have all kinds of fun!I havent bought any parts for my Dominator yet but if it is like the 642 you don't buy seal kits for the valves,you buy each individual o ring and seal.The open one on the header valve is probably for a machine with variable speed trans instead of hydrostatic.The Steering valve looks just like my 642 and Claas does have a seal kit for the orbit motor as well as the block that bolts to it.99% of the time the block is what starts leaking on mine from the end of a little valve sticking out the top.I am not positive but the welded spot on the valve looks like the same spot on my 642 valve that is actually a weep hole that lets fluid out when the o ring in the valve is leaking.I had been tempted to weld mine up but went ahead and took the valve apart to fix it.Claas will have everything you need but you might not be able to stand the price.The last seal kit for the steering motor and block ran about $60 each(2 kits).Just a word of caution ,when you take the header valve apart you better be careful because there are little plastic valves with springs that will come out when you take the end off.Do you have a parts book? I bought a new one from Claas when I got my 76 and i would be willing to bet the valves are the same.If you have part numbers I could give you the info for the folks that order my parts if you want it and they will drop ship them to you.
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Today's Featured Article - Oil Bath Air Filters - by Chris Pratt. Some of us grew up thinking that an air filter was a paper thing that allowed air to pass while trapping dirt particles of a particles of a certain size. What a surprise to open up your first old tractor's air filter case and find a can that appears to be filled with the scrap metal swept from around a machine shop metal lathe. To top that off, you have a cup with oil in it ("why would you want to lubricate your carburetor?"). On closer examination (and some reading in a AC D-14 service manual), I found out that this is a pretty ingenious method of cleaning the air in the tractor's intake tract.
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