I'm not sure I understand the problem- Do you mean the door swung too far open? If thats the case, I think you've got a door problem and not a hinge problem.

The hinges consist of the pillar mount, the arm, the pin and the spring. The springs and pins can be replaced, the arm can be bent back into shape and cracks in the arm or pillar mount can be welded. Sometimes the hole for the pin wears and it needs to be drilled out and replaced with a larger pin- You can get those at any of the vendors or even NAPA.

Adjusting the hinges is a pain but doable.

I decided it would be easier to get a used hinge and found one for $20.

'51 Chevy 1/2 ton w/'62 261, HEI, offy, fentons, dual carter/webbers, t-5 & 12 bolt posi