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Section 4 – Troubleshooting Information Electrical System
No Boom Extend from Base or Platform Consoles:
1. Loose or broken wire #39 from base terminal
block to load sense/dual load zone module white
connector J4 pin 6.
Check continuity. Replace if defective.
2. No output on load sense/dual load zone module
white connector J4 pin 3 to wirer 39A.
Check pin #5 for 12 volts. If no voltage present
when operating down function check section 5 for
module information.
3. Loose or broke wire #39A from load sense/dual
load zone module white connector J4 pin 3 to
harness plug pin #13.
Check continuity. Replace if defective.
4. Loose or broke wire #39A from harness plug pin
#13 to boom extend valve 4H-39A.
Check continuity. Replace if defective.
5. Loose or broken wire #02 from turret harness
plug to boom extend valve 4H-39A.
Check continuity. Replace if defective.
6. Defective boom extend coil 4H-39A. Check continuity and resistance through coil.
Replace if defective.
To order go to Discount-Equipment.com
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