Skyjack SJ46 AJ+ Service Manual

175
229042ABASJ46 AJ+, SJ46 AJ, SJ51 AJ
Electrical System - CE & AS Section 4 – Troubleshooting Information
4. Loose or broken wire #29 from base terminal
block to limit switch LS3.
Check continuity. Replace if defective.
5. Open or defective limit switch LS3. Ensure boom is fully retracted and horizontal or
below. Adjust switch if required. Check continuity
through switch. Replace if defective.
6. Loose or broken wire #29A from limit switch LS3
to base terminal block.
Check continuity. Replace if defective.
7. Loose or broken wire #29A from base terminal
block to limit switch LS4.
Check continuity. Replace if defective.
8. Open or defective limit switch LS4. Ensure boom is fully retracted and horizontal or
below. Adjust switch if required. Check continuity
through switch. Replace if defective.
9. Loose or broken wire #59 from limit switch LS4
to base terminal block.
Check continuity. Replace if defective.
10. Loose or broken wire #59 from base terminal
block to plug B pin #15.
Check continuity. Replace if defective.
11. Loose or broken wire #59 in boom cable B or its
connectors.
Check for continuity between pins #15 on cable B.
Check for loose or corroded connections on cable
connectors. Replace if wire is defective.
12. Loose or broken wire #59 from plug B pin #15 to
platform terminal block.
Check continuity. Replace if defective.
13. Loose or broken wire #59 from platform terminal
block to valve driver pin #31.
Check continuity. Replace if defective.
14. Defective valve driver channel input for high drive
enable.
See section 5 for OCM pin voltage reference.
15. Loose or broken wire #59 from platform terminal
block to torque switch S48.
Check continuity. Replace if defective.
16. Open or defective torque switch S48. Check continuity through switch while activating
low torque function between wires #59 and #45. If
no continuity found replace switch.
17. Loose or broken wire #45 from torque switch S48
to plug A pin #20 in platform control console.
Check continuity. Replace if defective.
18. Loose or broken wire #45 in cable A or its
connectors.
Check for continuity between pins #20 on cable A.
Check for loose or corroded connections on cable
connectors. Replace if wire is defective.
19. Loose or broken wire #45 from plug A pin #20 to
relay 45CR1.
Check continuity. Replace if defective.
20. Loose or broken wire #09 from base terminal
block to relay 45CR1.
Check continuity. Replace if defective.
21. Loose or broken wire #02 from relay 45CR1 to
base terminal block.
Check continuity. Replace if defective.
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Skyjack SJ46 AJ+ Specifications

General

Brand	Skyjack
Model	SJ46 AJ+
Category	Boom Lifts
Language	English