Anybody familiar with Diamond T truck engines

[junkyardjeff]

We have a 37 ish flathead six in the shop to see if it can be saved,is the crank pulley pressed on or does it screw on.

[junkyardjeff]

Here is what we are working on

[junkyardjeff]

Can anyone identify who made it for Diamond T

[Terry Harper]

I believe its a Hercules. I have service and parts manuals that covers many models including the RXB, OOB, QX series and WX series. Tonight  I will look and see what I can find.

Edited August 16, 2023 by Terry Harper (see edit history)

[Terry Harper]

The manuals don't mention it specifically, but I believe (key word... believe) that there should be pin and of course its keyed and is probably a snug interference fit.

Do you know the bore diameter? I might be able to match up which model engine it is based on that.

 

 

[junkyardjeff]

Bore is around 3 -13/32.

[junkyardjeff]

The part the hand crank fits in is the nut to hold the pulley on and the pulley looks to be keyed,now to get the pulley off without damaging it.