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Installing New Oil Pump...if it comes in

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I have a new oil pump coming in tonight (overnight shipping ain't pretty!) and plan on installing it after work. (My wife is getting pretty close to the breaking point.) Now, my distributor assembly is out. I would really like to be able to put the pump in first and run a slotted shaft down through the dizzy hole to spin that sucker and see if #1 it spins freely and #2 it makes some oil bubble up through my head. Of course to pull this off, I would need the pan installed and a fresh load of 5 quarts of Castrol 20/50 sitting in the pan. The question is, how much of a trick is it to get the oil pump drive shaft to engage the oil pump, as this assembly rotates down into the brass bearing in the block and simultaneously meshes with the gear in the cam shaft. Will the drive dog on the oil pump self-mesh with the slot on the drive-shaft, as this little puppy rotates in and down, not exactly a perfect mesh unless the driving shaft on the pump is perfectly turned to engage this slot. Guess some luck and pratice will help. The gear and other components will be slathered with assembly lube before cranking . I do not want to go through this again, ever.


Twould be much simpler to re-install the dizzy first and then work from the bottom. Really not liking to spin-the-pump, drop the pan (I am running out of gaskets) drop the pump, install the dizzy, install the pump (new gasket) and reload the oil. What a PITA-bread.
 
It's been so long since I was into a Triumph engine, I can't remember the discreet parts. The oil pump is cam driven, with a helical gear. Install the pump with the dizzy and shaft OUT. Insure it's seated on the mating surface and reinstall the pan. Set the dizzy drive in place (with engine set at TDC or 8~10* BTDC) and if it isn't engaging the pump you'll need to "fiddle" the pump shaft position to mate up. Can you post a photo of the three pieces (pump drive end, short shaft and dizzy drive)?

If you put the pump in first and have it seated correctly, reassemble the bottom end. You shouldn't have any worry over doing it again as long as the 30 second run didn't do more damage than frell the pump. Setting the dizzy position is less critical than getting the drive shaft mated to the oil pump/cam gear.
 
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