Step 7.
Make certain the swivel jaw or die block and gripping cam are fully in contact
with the plate and not partially on and off the edge of the plate.
Step 8.
Model with “Lock Open-Lock Closed” feature: Place lock lever in “Lock
Closed” position. Refer to Illustration A, Step 5.
The Model “R” locks have multiple spring tensions for various capacities.
WARNING: Use proper spring tension for plate thickness being lifted.
Refer to Illustration H.
R 35 Ton—4” plate variation—two tension positions. First two inches of plate
thickness use maximum tension position. Second two inches of plate thick-
ness use minimum tension position.
Example: Clamp rated 1/4—4 1/4” plate thickness. Use maximum tension on
plate up to 2 1/4” thick. Use minimum tension of plate above 2 1/4” - 4 1/4”
thick.
