#4 Trip Rack Issues

Greetings everyone. I’m wondering if anyone has advice, pictures, and/or reference to the desired positions of the cylinder trip rack and the gripper trip lever assembly.

Earlier today I adjusted the bearings on my #4, following the great advice of other Vanderblog members. In order to reach the eccentrics on the non-operator side, I had to remove the steel plate that covers the trip rack. Once I had the bearings adjusted properly, I reinstalled the trip rack, but can’t for the life of me find the proper setting.

Possibly connected to this is the position of the gripper trip lever. I’m wondering how far out the fulcrum and the set screw should be for proper press operation.

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Paul Moxon, Moderator
14 years ago

The distance is 1 9/16, but what matters is that the trip lever is parallel to the side of the carriage.

To shit the carriage to trip stick a pin wrench or screwdriver in the hole on the brass eccentric collar (MB-101, sheet 106) and turn toward the feed board.

Paul Moxon, Moderator
14 years ago

This schematic (from Sheet 106 of the operator’s manual) show the position of the set screw.

There are other reasons why the grippers may not raise enough:
1) Push rod does not contact the trip bar on the paper gripper assembly either the assembly is misaligned or the trip bar is misconfigured. (See sheet 104)
2) Gripper stems are dirty or bent
3) Gripper guide (LR-109) collar is crimped

Paul Moxon, Moderator
14 years ago

This photo shows the position of the trick rack with the carriage at the feed board.

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