oil pump install

[gedmeyer]

I'm working on getting the odds and ends back into my stroker...

For the oil pump, the service manual shows that (when using the stock pump) the shaft looks to be hammered onto the oil pump.

I'm using a melling high volume pump with new shaft. Would this procedure still be true? The shaft is not "locking" onto the pump right now.

 

[Jack]

Never hammer on the shaft or pump. Maybe a VERY LIGHT tap to seat the intermediate shaft onto the oil pump's shaft.

Just to confirm we're referring to same thing ... I suppose your NEW intermediate shaft is about 4" to 5" long and has a slot cut into TOP (distributor side) end of it ... and has some sort of blade and collar at BOTTOM (pump side) end of it. I don't have one in front of me ... seem to recall the pump's shaft may have a radial ring (relief) cut into the circumference of it's tip ... and the intermediate shaft's collar may snap into that relief ... along with a blade. Maybe that relief is cut into the intermediate shaft ... not sure. Please verify that your NEW collar is metal ... as the factory intermediate shaft used a plastic collar ... IMHO a metal collar is better.

Not related to above, but important: Have your checked the dimension between the oil pan and bottom of the oil pump pickup screen? With compressed pan gasket ... it should be about 3/8" between pan & screen.

Once the pickup is positioned optimally ... and its tube firmly seated into pump body ... it's good procedure to LIGHTLY tack-weld the tube to the body in 3 or 4 spots.
JACK:gap

 

[gedmeyer]

yeah, you were dead on with the shaft/pump description. The intermediate shaft doesn't seem to clip onto the relief in the pump at all. Even with light taping.

 

[Jack]

does your collar float on the int shaft? ... if so, just tap on the collar itself.

 

[gedmeyer]

No, the collar is pinned to the intermediate shaft, so there really isn't much "play" in it at all. I took a quick measurement using the calper and it doesn't seem like there is much more room for the saft to slide onto the oil pump.

 

[Red69]

Good advice on the pump has been posted. Before spot welding the pickup tube to the pump body, measure the pickup distance from the pan bottom as stated. You can accurately do this by placing modeling clay on the bottom of the pickup before bolting on the oil pan. Remove the pan and measure the clay thickness for accurate spacing. Rub a little oil on the pan side of the clay before bolting on the pan. It will keep the pan from sticking to the clay. After achieving the desided spacing, scribe a mark indexing the tube to pump body location. This will assure you it had not moved before being spot welded.

 

[Jack]

No, the collar is pinned to the intermediate shaft, so there really isn't much "play" in it at all. I took a quick measurement using the calper and it doesn't seem like there is much more room for the saft to slide onto the oil pump.

That's what I mean by floating ... it is pinned but can float a little ... i have the same type int shaft.

If the pan is off (is it?) take the pump off and try to hand-fit the int shaft to it ... maybe you just haven't got it right ... or maybe the blade is too long or shaft's slot not cut deep enough ... stuff happens. I did my pickup just like red69 suggested.
JACK:gap