Clamp Return Speed Adjustment - Challenge CHAMPION 305 Instructions And Parts Manual

12.0 Adjustments
actuator on the top of the clamp and must be adjusted to within 1/8" (3.2mm) of the face of
the switch.

12.9 Clamp Return Speed Adjustment

The clamp return speed can be adjusted if it becomes too sluggish or too fast. This adjustment is
made on the air cylinder that is attached to the clamp. To make this adjustment, first remove the
upper rear cover. Then loosen the locking nut on the upper flow control valve on the air cylinder
(Figure 41) and turn the adjustment knob clockwise to decrease the return speed of the clamp or
counter-clockwise to increase the return speed of the clamp. The clamp should be adjusted such that
it returns fast but does not bounce at the top of the stroke. Tighten the locking nut when finished.
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Figure 40
Upper Flow
Control Valve
Figure 41