I am in the middle of a major overhaul to my 95 YJ 6cyl. I had removed the oil pan to replace the rear main seal and figured I might as well replace the oil pump while I was in there. The instructions with the oil pump state that it needs to be primed but the instructions in the Chilton manual said nothing of this. I searched the forums and turned up nothing. The guys at autozone said that the distributer turns the oil pump and for some cars/trucks there is a special drill attachment that turns the oil pump to prime it but there is none for the jeep.
When I installed my remaned engine, the manual said to prime the pump like you say. Alls I did was take a wood bit, grind down the end flat so it would fit into the notch in the oil pump and I turned it with a drill. Worked very well. You are not supposed to crank the engine to prime the pump. This would move the internals of the engine around without oil on/around them. This could damage the engine. Hope that helps.
Any long screwdriver blade that would reach and fit the slot in the oil pump drive that the distributer fits into will work. Even a piece of all-thread mashed flat on one end and chucked in a drill will work! If you use the all-thread, cover the threads with duct tape so you do not scratch anything.
when I put my toyota oil pump (22re) on the advice for that was to pull the plugs and let the engine turn over without firing. Apparently assembly lube is fine for the 4-5 seconds it takes to bring the oil pressure up...
I like the other advice better though...
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I took my pump apart and cleaned/debured everything.
I then filled the pump with assy lube, this creates instant suction when the motor turns over.
The assy lube the motor was put together with will hold up just fine for the 2 seconds it will take to get oil pressure up using this method.
I filled the pump with oil before I mounted it and then cranked the engine a few times with the coil wire pulled. I always do that kind of thing when ever I change the fluids.
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