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Message: <blockquote data-quote="skidsteer.ca" data-source="post: 2981" data-attributes="member: 307">The nuts can't be torqued to hold things together, hence the blue loctite.Hmmm... I was expecting 2 separate coils, but these are combined I see.The coils just slip loosely over the stems, say .030 to .050 clearance. You don't even need the nut to hold them on (you could use black tape or something), you can test their function just buy slipping the on. Hold the switch and see if there is a magnetic field pulling them onto the stems. If they function, I believe I'd leave the existing stem in and return, or pehaps keep the new one for a spare, especially if it is the same part # as the stems for the front quick couplersIf you decide to change the stem, just don't bang the stem or drop it and don't try to torque the nut more then barely snug. Aside from that just normal precautions, clean dirt away, use correct wrench on base of stem, new stem should come with new o rings on it.If one of these electric functions  act up you can test the coil as described above, or if you think the problems is in the stem they can be switched side to side to see if the problem is electrical or the stem.However I can't say I have been formally trained in this, its just some trouble shooting I pick up along the way, (and based on the 3rd valve coils on my 773) I hope it helpsKen</blockquote>