Service Manual
DS 350 GM
Rev A 05/01/01 // SB
190113_A
20
3.7
LENGTH READING PROBLEM
Check out clutch in big gear wheel of length transducer. Extend and retract boom
to ensure that clutch is not slipping on potentiometer axle.
Refer to Drawing 6 in Section 4 and Adjustment Procedure 5 in Section 5.
Replace length potentiometer assembly, Refer to Drawing 6 in Section 4.
Remove slip ring body from shaft and remove gear wheel from potentiometer
axle. Unscrew mounting plate and remove potentiometer assembly from
mounting plate. Remove assembly wires form terminal block. Connect new
assembly to terminal block. Reinstall mounting plate, gear wheel and slip
rings. With boom fully retracted, reset potentiometer by turning it slowly
counter-clockwise until it reaches a soft stop. Refer to Drawing 3 & 6 in
Section 4 and Adjustment Procedure 5 in Section 5.
Check mechanical adjustment of length potentiometer in cable reel. With boom fully retracted, reset
potentiometer by turning it slowly counter-clockwise until it reaches a soft stop.
Refer to Drawing 6 in Section 4 and Adjustment Procedure 5 in Section 5.
START
PROBLEM: Length displayed incorrect. Crane is not in “out of load chart” condition.
Replace the gear wheel, clean potentiometer axle. Reset
length potentiometer.
Refer to Drawing 6 in Section 4 and Adjustment
Procedure 5 in Section 5.
Check power supply to length transducer on main board,
terminal X1:28 (ground) and X1:26 (+12/24v)
Refer to Drawing 3 in Section 4.
Main board defective. Replace main board.
Refer to Drawing 4 in Section 4 and Replacement
Procedure 3 in Section 5 .
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