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Section 4 – Troubleshooting Information Electrical System
13. Loose or broken wire #21 from base terminal
block to relay 21CR.
Check continuity. Replace if defective.
14. Loose or broken wire #02 from base terminal
block to relay 21CR.
Check continuity. Replace if defective.
15. Loose or broken wire #09 from base terminal
block to relay 21CR.
Check continuity. Replace if defective.
16. Defective relay 21CR. Check relay. Replace if defective.
17. Loose or broken wire #21A from relay 21CR to
turret harness plug pin #5.
Check continuity. Replace if defective.
18. Loose or broken wire #21A from turret harness
plug pin #5 to dump valve 2H-21A.
Check continuity. Replace if defective.
19. Loose or broken wire #02 from dump valve
2H-21A to turret harness plug.
Check continuity. Replace if defective.
20. Defective dump valve coil 2H-21A. Check continuity and resistance through coil.
Replace if defective.
4.2-8 No Movement from Base Control Console
No Boom Up
1. Loose or broken wire #10A from ignition/ pump
switch S5 to boom switch S12.
Check continuity. Replace if defective.
2. Defective boom switch S12. Check continuity through switch while activating
up function between wires #10A and #14. Replace
switch if no continuity.
3. Loose or broken wire #14 from boom switch S12
to resistor R17.
Check continuity. Replace if defective.
4. Defective resistor R17. Check continuity. Replace if defective.
5. Loose or broken wire #14 from resistor R17to
base terminal block.
Check continuity. Replace if defective.
6. Loose or broken wire #14 from base terminal
block to turret harness plug pin #4.
Check continuity. Replace if defective.
7. Loose or broken wire #14 from turret harness
plug pin #4 to boom up valve 4H-14.
Check continuity. Replace if defective.
8. Loose or broken wire #02 from turret harness
plug to boom up valve 4H-14.
Check continuity. Replace if defective.
9. Defective boom up coil 4H-14. Check continuity and resistance through coil.
Replace if defective.
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