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To adjust 10-pin Approach Drive Chain:
1. Loosen the three screws that secure the center compartment and hinge it back.
2. Locate the chain idler adjustment and loosen the main pivot and adjusting jam nut.
3. Adjust the idler until there is no play in the approach wheel. Make sure the sprockets
not come in contact with each other after the adjustment is made.
4. Tighten the jam nut and pivot and check for play in the wheel.
To adjust 7-pin Approach Drive Chain:
1. Loosen the three screws that secure the center compartment and hinge it back.
2. Loosen the motor mount from the outside of the panel.
3. Loosen the adjusting screw jam nut if one is used on the machine.
4. Turn the adjusting screw in or out so the chain has between 1/4 inch and 3/8 inch
(6.35mm to 9.53 mm) of movement, but no play in the approach wheel.
5. Re-tighten the motor mount and adjusting screw jam nut then check the buffer belt
tension and re-adjust if needed.
6. Hinge the PLC control plate into place and tighten the three screws.
Note: It is a good idea to inspect and clean everything in the center compartment when it is
open.
Rear Approach Wheel Chains
These chains should never be tight and the adjustment should last a long time due to the
light duty of these wheels. The plastic idler used to give chain tension is only removing the
excess slack in the chain. A little movement in the rear approach wheels is fine.
Approach Sensor Chains
The Approach Sensors located on each side of the machine use a #25 chain to drive the
target. This chain is small and should never be tight; it should always run a little loose. A
good adjustment would be to have 1/2 inch (1.27 cm) of total play in the chain. To make an
adjustment, loosen the two bolts on the bracket and move the assembly to achieve the
proper amount of play.
Summary of Contents for FLEX 17-5801
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