I have just acquired a Vandercook 4 and am working on getting it in printing shape. As it sits, the pedal-operated grippers aren’t working properly. The pedal, in its resting state, is pretty low to the ground, making it impossible for the chain to pull far enough to open the grippers. When I push on the level on the non-operator side of the press (I’m sorry, I am new to Vandercook maintenance and not mechanically inclined), the grippers do raise. When I crank the cylinder to the end of the press bed, I can see that they are releasing. It seems to me to be an issue of too much “slack” in the chain, but when I gingerly pull on the chain to see if that will raise the grippers, nothing moves.
Any thoughts on the best approach to troubleshooting?
Elana @ Proof Public