Posted by Dick L on October 10, 2020 at 04:41:31 from (50.51.88.248):
1988, 1989, and 1990 I bought new 3 400 ton as well as two 220 Japanese molding machines. They are considered obsolete and parts are not stocked in the US anymore. From fatigue a 1 /14" pipe elbow to ferrell hydraulic pipe with a fine threaded nut. Bought fittings and high pressure pressure hose. Could not thread the 1 inch Japanese pipe as it is larger on the outside. Bought more fittings and threaded thick wall 1 inch pipe to match threads. 1 1/4' pipe fittings screwed in tight with a 4 foot pipe wrench still leak. Find the taper on Japanese threads has more taper and regardless how tight it is only on about three threads. No problem I"ll just re tap the threads with my 1 1/2" pipe tap. I have used my tap to tap out many Allis Chalmers B, C and CA exhaust manifolds. I always put that tap back every time in a tap drawer at home. (RIGHT) After a day of looking I found a new on in Auburn IN. 95 bucks later and another day gone by. Packed the tap with grease and it all is leak free after running the tap in to where it has all new threads on the proper taper. So the message is Japanese pipe fittings are the same thread with a steeper taper. I now again have a set to pipe taps from 1/8" to 2" in the same place. Two 1 1/2" and two 1" in the drawer. I might even find my lost 1 1/4" tap if I live long enough.
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Today's Featured Article - 12-Volt Conversions for 4-Cylinder Ford 2000 & 4000 Tractors - by Tommy Duvall. After two summers of having to park my old 1964 model 4000 gas 4 cyl. on a hill just in case the 6 volt system, for whatever reason, would not crank her, I decided to try the 12 volt conversion. After some research of convert or not, I decided to go ahead, the main reason being that this tractor was a working tractor, not a show tractor (yet). I did keep everything I replaced for the day I do want to restore her to showroom condition.
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