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--- techtalk:ih:oil03g [2024/01/01 19:37]
hippysmack
+++ techtalk:ih:oil03g [2024/05/09 19:11]
hippysmack [Leaking Around Oil Pressure Switch Connection]
@@ Line 7: / Line 7: @@
 ====== Leaking Around Oil Pressure Switch Connection======
+The threading for the pressure switch nipple is not a tapered pipe thread. ((needspeed of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/200460-replacement-oil-pump-year-74)) \\
+It's a 15/32"-24. An oddball size, but that's what it is. \\
+Cracked pumps are actually common. It's easy to over tighten the switch fitting. \\
+You're tightening a steel fitting that has a less than 1/2" thread into aluminum with a large 1" wrench. \\
+It's not the thread that seals the oil, it's the flat surface of the pump body against the flat surface of the fitting that does that. \\
+It only needs to be snug.
 If you have a leak from the oil pressure switch nipple area, 99% of the time it is a cracked body. ((Dr Dick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/175074-66-xlch-oil-pump-concerns/page2?t=1878331&page=2)) \\
 Pull the 1" hex nut and look for a crack on the flat face of the body at 6:00. \\

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