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PAT REEL A2B LENGTH CABLE REPLACEMENT PROCEDURE
- Cut old cable at the cable drum
- Disconnect the damaged length cable from junction box at the boom tip.
- Open PAT cable reel cover and disconnect wiring from connection block
- Pull 7 conductor cable out of strain relief
- Remove the PAT Hirschmann cable reel from its mounting brackets.
- Remove the damaged length cable from the slip-ring connection. Refer to drawing below.
- On the back side of the cable reel, open the strain relief attached to the axle in the center of the drum. Pull existing length cable out of the cable reel.
- Pull new A2B length cable through the hole, pipe and strain relief and push it through the axle of the reeling drum. Tighten strain relief to ensure sealing.
- Reconnect the length cable to the slip-ring. Refer to drawing below.
- Remount PAT Hirschmann cable reel to the boom.
- Turn reeling drum clockwise to spool the new A2B length cable neatly onto the drum.
- Set preload on cable reel by turning the drum counter-clockwise 5 to 8 turns.
- Wrap the new A2B length cable around the boom tip anchor pin (4 or 5 wraps) and secure with tie wraps. Leave enough length cable to connect into the boom tip junction box.
- Connect the length cable inside the boom tip junction box.
- Reset length potentiometer in length angle transducer (screw is located in center of white gear);
- With the boom fully retracted, turn potentiometer carefully counter-clockwise until it stops.
- Recheck length and angle display.
