Skyjack SJ85 AJ Service Manual

110
SJ85 AJ229044ADA
Section 4 – Troubleshooting Information Electrical System
4.2-6 No Turret Rotate
No Turret Rotate Left from Base Console:
1. Loose or broken wire #10C from resistor R1 to
resistor R2.
Check continuity. Replace if defective.
2. Defective resistor R2. Check resistor, replace if defective.
3. Loose or broken wire #10D from resistor R3 to
riser switch S13.
Check continuity. Replace if defective.
4. Loose or broken wire #33 from base terminal
block to turret harness plug pin #10.
Check continuity. Replace if defective.
5. Loose or broken wire #33 from turret harness
plug pin #10 to turret rotate right valve 4H-33.
Check continuity. Replace if defective.
6. Loose or broken wire #32 from base terminal
block to turret harness plug pin #9.
Check continuity. Replace if defective.
7. Loose or broken wire #32 from turret harness
plug pin #9 to turret rotate left valve 4H-32.
Check continuity. Replace if defective.
8. Loose or broken wire #02 from turret harness
plug to boom up valve 4H-32.
Check continuity. Replace if defective.
9. Defective turret rotate left coil 4H-32. Check continuity and resistance through coil.
Replace if defective.
No Turret Rotate Left from Platform Console:
1. Loose or broken wire #04 from platform terminal
block to joystick controller A1.
Check continuity. Replace if defective.
2. Loose or broken wire #02 from platform terminal
block to joystick controller A1.
Check continuity. Replace if defective.
3. No output on X-axis of joystick controller A1. Refer to joystick test procedure in section 5.
4. Loose or broken wire “X” from joystick controller
to J3 pin #15 of valve driver.
Check continuity. Replace if defective.
5. No output on J3 pin #24 of the valve driver to
wire #20B.
Check for 12 volts. If no voltage present with foot
on footswitch check section 5 for OCM pin voltage
reference.
6. No output on J2 pin #13 of the valve driver to
wire #32.
Check for a minimum 3.5 volts. If no voltage
present with foot on footswitch check section 5 for
OCM pin voltage reference.
7. Loose or broken wire #32 from valve driver J2
pin #13 to plug A pin #14 in platform control
console.
Check continuity. Replace if defective.
8. Loose or broken wire #32 in boom cable A or its
connectors.
Check for continuity between pins #14 on cable A.
Check for loose or corroded connections on cable
connectors. Replace if wire is defective.
9. Loose or broken wire #32 from base connector
plug A pin #14 to base terminal block.
Check continuity. Replace if defective.
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Skyjack SJ85 AJ Specifications

General

Brand	Skyjack
Model	SJ85 AJ
Category	Boom Lifts
Language	English