Skyjack SJ61T - 52 No Right Steer; 53 Direction Sensing Inoperative

Page 138 December 2007
Telescopic Boom Series
Models SJ61T & SJ66T
194312
Section 4 - Troubleshooting InformationService and Maintenance
6. Loose or broken wire #24A in boom cable A or its connectors.
- Check for continuity between pins #10 on cable A. Check for loose or corroded connections
on cable connectors. Replace if wire is defective.
7. Loose or broken wire #24A from base plug A pin #10 in base terminal block.
- Check continuity. Replace if defective.
8. Loose or broken wire #24A from base terminal block to turret harness plug pin #7.
- Check continuity. Replace if defective.
9. Loose or broken wire #24A or #02 from turret harness plug to left steer valve 4H-24A.
- Check continuity. Replace if defective.
10. 10. Defective left steer valve coil 4H-24A.
- Check continuity and resistance through coil. Replace if defective.
4.1-52 No Right Steer
NOTE
This function times out after 15 seconds when operating this
function only.
1. Loose or broken wire #23 from drive joystick A2 to platform terminal block.
- Check continuity. Replace if defective.
2. Open or defective diode D23 in platform terminal block.
- Check diode. Replace if defective.
3. Loose or broken wire #23 from platform terminal block to relay 17ACR2.
- Check continuity. Replace if defective.
4. Defective N/C contacts in relay 17ACR2.
- Check relay. Replace if defective.
5. Loose or broken wire #23A from relay 17ACR2 to plug A pin #9 in platform control console.
- Check continuity. Replace if defective.
6. Loose or broken wire #23A in boom cable A or its connectors.
- Check for continuity between pins #9 on cable A. Check for loose or corroded connections on
cable connectors. Replace if wire is defective.
7. Loose or broken wire #23A from base plug A pin #9 to base terminal block.
- Check continuity. Replace if defective.
8. Loose or broken wire #23A from base terminal block to turret harness plug pin #6.
- Check continuity. Replace if defective.
9. Loose or broken wire #23A or #02 from turret harness plug to right steer valve 4H-23A.
- Check continuity. Replace if defective.
10. 10. Defective left steer valve coil 4H-23A.
- Check continuity and resistance through coil. Replace if defective.
4.1-53 Direction Sensing Inoperative
1. Loose or broken wire #09 from base terminal block to limit switch LS1.
- Check continuity. Replace if defective.
2. Open or defective limit switch LS1.
- Adjust limit switch if required. Check continuity through switch. Replace if defective.
3. Loose or broken wire #17 from limit switch LS1 to base terminal block.
- Check continuity. Replace if defective.
4. Loose or broken wire #17 from base terminal block to base plug B pin #6.
- Check continuity. Replace if defective.
5. Loose or broken wire #17 in boom cable B or its connectors.
- Check for continuity between pins #6 on cable B. Check for loose or corroded connections on
cable connectors. Replace if wire is defective.
6. Loose or broken wire #17 from base plug B pin #6 to valve driver pin #15 in platform control console.
- Check continuity. Replace if defective.