Determining the spreading force

[bigu01]

Homework Statement

The special tool is used for installing and removing snap rings.Determine the spreding force applied at G and H if P=50N.

Homework Equations

ƩF_x=0 ;
ƩF_y=0;
Ʃm=0

The Attempt at a Solution

I am drawing the FBD of the A-C-F-H part of the special tools. I have at A(the 50-Ns of 5) ,at C I have the reaction from the two force member CD , at F I have two Fx and Fy from the pin , and at H I have the H force in the negative y-direction.So I have 4 unkowns and three reactions, where is my mistake or what should I do, in order to get the right result?

 

[bigu01]

Dont mind replying, I have solved it.