Page 146 December 2007
Telescopic Boom Series
Models SJ61T & SJ66T
194312
Section 4 - Troubleshooting InformationService and Maintenance
1. Stuck or defective axle lockout valve 3H-65.
- Clean valve. Replace if defective.
2. One or more counterbalance valves (CB12 or CB13) failed to shift or is defective.
- Clean valve. Check O-rings on valve. Repair or replace valve as required.
4.2-24 Axle Will Not Lock
NOTE
Axle is in constant oat if boom is fully retracted and is below 15 de-
grees of elevation.
1. Axle lockout valve 3H-65 is stuck in shifted position or is defective.
- Clean valve. Check O-rings on valve. Check operation of valve. Repair or replace valve as
required.
2. Bypassing or defective axle cylinders C6 and C7.
- Check seals on cylinder. Replace as necessary. Replace cylinder if defective.
3. Counterbalance valves (CB12 or CB13) out of adjustment or are defective.
- Clean valve. Check O-rings on valve. Repair or replace valve as required.
4.3 Load Sensing System - CE
4.3-1 Green Power LED is not Flashing
1. Loose or broken wires #60 and #02 at platform terminal block.
- Check for connections. Check for voltage (12V).
2. Load cell has lost its calibration.
- Refer to calibration procedure for recalibration of load cell.
4.3-2 Load Cell red Alarm LED is ON (with platform empty)
1. Load cell has lost its calibration.
- Refer to calibration procedure for recalibration of load cell.
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