PAT DS 150, Service Manual

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Troubleshooting Flow Charts 24
PROBLEM: Damaged or broken length cable.
Broken Length Cable
Refer to cabel reel parts list and system wiring diagram.
Replace length cable using the following procedure:
1 Cut old cable at cable drum
2 Disconnect damaged length cable from junction box at the boom nose.
3 Open cable reel cover and disconnect wiring from connection block. Pull 7 conductor cable
out of strain relief.
4 Remove cable reel from mounting brackets.
5 Remove damaged length cable, which is mounted to the slip rings in the cable reel, from slip
ring connection.
6 On the backside 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.
7 Pull new 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.
8 Reconnect the length cable to the slip ring.
9 Remount cable reel to the boom.
10 Turn reeling drum clockwise to spool the new cable neatly onto the drum.
11 Set preload on cable reel by turning the drum counter-clockwise 5 to 8 turns.
12
Wrap the new 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.
13 Connect the length cable into the boom tip junction box.
14 Reset length potentiometer in length angle transducer (screw is located in center of white
gear); with boom fully retracted, turn potentiometer carefully counter-clockwise until it stops.
Recheck length and angle display.