Anyone familiar with Diamond T truck engines

We have a 37ish flathead six in the shop to see if it can be saved,trying to get the crank pulley off so does anyone know if it's a press fit or possibly screws on as there is no nut or bolt holding it on.

 

Here it is.

 

I'm thinking it should have a bolt in the center that might have broken off? Can you sand blast that area and get a better picture of the crank snout? Hell, as many pictures as possible, we love old truck engines

 

This a very comprehensive thread about the restoration of a Texaco Diamond T tanker down under. You could send them an email if you can't get an answer here.
https://texacotankerproject.com/

 

The center thing the hand crank engages is a bolt - your pipe wrench should have it unscrewed in a heartbeat.

 

Here is what the rest of the engine looks like.

 

The Diamond Ts I've seen used the Hercules engines. Parts are still out there but the cost will be like they're made of gold.

jack vines

 

don't know that this is any help...no verbage on how to remove the crank pulley...but it looks keyed in the drawing and I don't see any threads. Talked to a friend that rebuilt one of these some 40 years ago and he can't recall with any certainty.... hoping I'm not misguiding you but if it was me I would heat the hand crank nut red hot and see if it unscrewed as suggested using a pipe wrench...if not then it is a puller
Intuition tells me that it is threaded but then Hercules didn't do things conventionally

 

I would think that is a bolt in the center. It has lugs for a crank to hand start it from the looks of it, if you turn it opposite the way the lugs are, it should back out. It’s probably tight due to torque and rust. Big pipe wrench and a long cheater pipe, maybe some heat and penetrating oil should do it.

 

The part that the hand crank fits in is actually the nut to hold the pulley on and presume the pulley is keyed,it's stuck on tight.

 

They gave up and it's going to get a 350 and a automatic trans.