[6pack] Distributor Pedestal Sits Too High on Drive Shaft Gear

[Bob Lang]

I'll bet your distributor drive gear is NOT engaging the oil pump drive.
With the distributor gear out you should be able to turn the oil pump tang
with a long screwdriver.  If not, the oil pump shaft is too tight in the
bushing in the block. If your machinist drove the bushing out, chances are
they peened over the bushing on one end or both ends. I just had this
problem a couple of days ago.  Drop the pan and remove the oil pump and try
to fit the shaft into the block. It should rotate easily. Same for the
distributor drive gear. Once you know those are free it should be easy to
drop the gear in. Note that it spins clockwise as it slips in.

Good luck!

Bob Lang

On Thu, Jul 1, 2021, 7:54 PM rmf3860 rmf3860 <bobfabie at gmail.com> wrote:

> I'm baffled...
>
> For clarity in describing parts, I'm referring to page 90 of Bentley's.
>
> Fact: The distributor bushing is bottomed out in the block.
> Fact: It's 1 1/4" from the shoulder of the stock pedestal to its bottom;
> that's how much space it needs to bottom out on the block.
> Fact: With the drive gear in place - its slot seated in the oil pump's
> groove - the distance from the top of the drive gear to the top of the
> block's shoulder, is 1 1/8". That 1/8" difference prevents the pedestal
> from sitting flush on the block. We're not talking gasket widths, I'm
> saying it's 1/8" difference.
>
> The position of the oil pump shaft is not moveable.
>
> The bushing, drive gear and pedestal are all original. The oil pump is new.
>
> Can someone tell me what I'm doing wrong or what the problem is? Maybe
> someone can measure just the length of the oil pump shaft. If it was 1/8"
> shorter, there would be no problem.
>
> Thank you all for your time.
> Bob Fabie
> Fredericksburg, Va
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