Hi – I have my (early) Universal III up and running and it’s printing very well and all is great except for the paper release/gripper problem at the end of the bed. I posted on this awhile ago and have been tinkering with the problem on and off ever since and still no luck. I have to yank the paper out of the grippers. Here’s what I’ve done so far:
– cleaned and lubricated the gripper bar assembly. The grippers work fine when lifted with the pedal.
– removed, cleaned and re-attached the trip lever – it seems like it’s in good shape (photo)
– lubricated the push rod
– rotated the cams
– placed a thin shim behind the gripper cam (photo)
I can see movement of the trip lever and push rod when the cylinder moves to the end of the bed, so I know the trip lever roller is moving up onto the gripper cam. But it’s simply not enough to push the gripper pins far enough to raise the grippers. I have pulled on the top of the trip lever to see if more pressure would get the grippers to lift, but I can’t get any additional movement.
I took measurements on how far the push rod goes in at two locations. At the feedboard, using the pedal, the rod pushes in about 1/2″ more than at the end of the bed.
I’m hesitant to add another shim behind the wedge without further advice.
Hoping for some suggestions. Thank you!