The MUL20 sealless strapping tool feedwheel depth is easily adjusted by a bolt, this part is vital to a steel strapping tools service requirements as tools without an adjustment bolt for feedwheel depth would otherwise need to have major parts replaced such as the side casing to prevent the feedwheel and gripper touching.
1.3 ADJUSTING THE FEEDWHEEL CLEARANCE The MUL-20 is adjusted from the factory so that there is approximately .005" clearance between the Feedwheel 38 and the Clutch Plug 22 (Bottom Gripper).
Setting them close together insures that there is enough pressure to enable the Feedwheel 38 and Clutch Plug 22 to bite into the strapping, and operate without slipping. At the same time, by maintaining a small clearance between the Feedwheel 38 and the Clutch Plug 22, they are prevented from grinding against each other if the tool is ratcheted without having strapping under the Feedwheel.
This maximizes the life of those two parts. Should it become necessary to adjust the clearance between the Feedwheel 38 and Clutch Plug 22, it is easy done, as follows:
a) Loosen Nut 59 to the right of the rear strap guide. This frees the Gripper Adjustment Screw 67.
b) Turn the tool up on its nose, with the bottom of the tool facing you, and squeeze the Feedwheel Support Handle 68. This will lift the Feedwheel Support Handle 68 off the Gripper Adjustment Screw 67.
c) Turn the Gripper Adjustment Screw 67 clockwise to decrease and counterclockwise to increase the gap between the Feedwheel 38 and the Clutch Plug 22.
d) When the gap is properly adjusted, re-tighten the lock Nut 59 to keep the adjusting screw from moving while the tool is being operated.
NOTE: The gap is set properly when a single piece of strapping is gripped tightly between the Feedwheel and the Bottom Gripper, but a piece of paper slides easily between the Feed Wheel 38 and Gripper 22.
