oil pump

[RanchsA]

Hi all. My "new" block for the A is finished being cleaned and the crank is polished. Have new bearings/rings ready to roll. I'm wondering are there any recommendations for the oil pump. Should this be replaced or is there a way to test/rebuild it?
thanks
randy

[Jim Becker]

The bottom plate of that oil pump tends to warp. The warpage can produce excessive end clearance of the gears and even allow the gasket to blow out. Use a flat surface and some sandpaper to lap in the cover until it is again perfectly flat. If you have nothing else very flat, a piece of glass will work. Move the part in a figure 8 pattern until it is flat. Other than the bottom plate, there is rarely a problem with the A oil pump.

[RanchsA]

Thanks for the response Jim. Just want to make sure I'm looking at the right piece. We are talking about the mating surface on part number 2 in the diagram correct?
Thanks randy.

[Jim Becker]

. . . the mating surface on part number 2 in the diagram . . .

Correct.

[RanchsA]

Thanks Jim. This will be my next task. I was able to get the crank, cam and pistons in over the weekend. Hopefully will be good as new when we are done.

[RanchsA]

Sorry one more question. I've cleaned up the oil pump and sanded down the bottom plate. Should I pack Vaseline or anything in the pump to help with priming? I read in a few places on other pumps guys recommended it. Just wondering if it was necessary here?
Thanks again
Randy

[havoc1482]

Not on a Super A-140. The pump doesn't need to be primed. Just splash some motor oil on it if any parts that would otherwise be wet with oil are dry. Just to avoid a moment of non lubrication before the oil starts flowing.

[RanchsA]

Thanks Mike much appreciated.