what model groco head do I have.

[mervdog]

I have a 1986 Mark I and the pump on the head needs to be rebuilt. The documentation say the head is an hk but it does not resemble any of the pictures of that model. It looks more like an hc or he from the pictures I can find. Does any one have any idea on the model or how I can tell?

[Ron Hill]

Merv : The only thing that I can tell you is to go on Groco's web page and match up your head with their pictures of heads !?!