Skyjack SJ46 AJ+ Service Manual

149
229042ABASJ46 AJ+, SJ46 AJ, SJ51 AJ
Electrical System - CE & AS Section 4 – Troubleshooting Information
No Boom Down
1. Loose or broken wire #10B from resistor R1 to
boom down switch S12.
Check continuity. Replace if defective.
2. Defective boom switch S12. Check continuity through switch while activating
down function between wires #10B and #13. If no
continuity found, replace switch.
3. Loose or broken wire #13 from boom down
switch S12 to base terminal block.
Check continuity. Replace if defective.
4. Loose or broken wire #13 from base terminal
block to turret harness plug pin #3.
Check continuity. Replace if defective.
5. Loose or broken wire #13 from turret harness
plug pin #3 to boom down valve 4H-13.
Check continuity. Replace if defective.
6. Loose or broken wire #02 from turret harness
plug to boom down valve 4H-13.
Check continuity. Replace if defective.
7. Defective boom down coil 4H-13. Check continuity and resistance through coil.
Replace if defective.
No Riser Up from Base Control Console
1. Loose or broken wire #10A from ignition/pump
switch S5 to riser switch S25.
Check continuity. Replace if defective.
2. Defective riser switch S25. Check continuity through switch while activating
up function between wires #10A and #31.Replace
switch if no continuity.
3. Loose or broken wire #31 from riser switch S25
to base terminal block.
Check continuity. Replace if defective.
4. Loose or broken wire #31 from base terminal
block to main harness plug pin #8.
Check continuity. Replace if defective.
5. Loose or broken wire #31 from main harness
plug pin #8 to riser up valve 4H-31.
Check continuity. Replace if defective.
6. Loose or broken wire #02 from main harness
plug to riser up valve 4H-31.
Check continuity. Replace if defective.
7. Defective boom up coil 4H-31. Check continuity and resistance through coil.
Replace if defective.
No Riser Down from Base Control Console
1. Loose or broken wire #10B from ignition/pump
switch S5 to riser switch S25.
Check continuity. Replace if defective.
2. Defective riser switch S25. Check continuity through switch while activating
up function between wires #10B and #30.Replace
switch if no continuity.
3. Loose or broken wire #30 from riser switch S25
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