KYJACK, Page 11
JIII Conventional eries
143911
ection 4 - Troubleshooting Information
ervice and Maintenance
Electrical ystem (Continued)
3. Defective lift/drive switch S3.
Check switch. Replace if defective.
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4. Loose or broken wire #18 from lift/drive switch S3 to base terminal block B-1.
Check continuity. Replace if defective.
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5. Loose or broken wire #18 from base terminal block B-1 to high speed limit switch LS1-B.
Check continuity. Replace if defective.
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6. Defective high speed limit switch LS1-B.
Check switch. Replace if defective.
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7. Loose or broken wire #18A from high speed limit switch LS1-B to rear drive manifold.
Check continuity. Replace if defective.
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8. Defective speed valve coil 3H-18A-1 or 3H-18A-2.
Check continuity through coil. Replace if defective.
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9. Loose or broken wire #02 from rear drive manifold to base terminal block B-1.
Check continuity. Replace if defective.
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4.1-23 Right teer Inoperative
1. Loose or broken wire #12B from lift/drive switch S3 to right steer switch S7-2.
Check continuity. Replace if defective.
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2. Defective right steer switch S7-2.
Check switch. Replace if defective.
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3. Loose or broken wire #23 from right steer switch S7-2 to base terminal block B-1.
Check continuity. Replace if defective.
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4. Loose or broken wire #23 from base terminal block B-1 to steer right valve coil 4H-23.
Check continuity. Replace if defective.
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5. Defective steer right valve coil 4H-23.
Check continuity through coil. Replace if defective.
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6. Loose or broken wire #02 from steer right valve coil 4H-23 to base terminal block B-1.
Check continuity. Replace if defective.
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7. Open diode D23.
Check diode. Replace if defective.
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4.1-24 Left teer Inoperative
1. Loose or broken wire #12B from lift/drive switch S3 to left steer switch S7-3.
Check continuity. Replace if defective.
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2. Defective left steer switch S7-3.
Check switch. Replace if defective.
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3. Loose or broken wire #24 from left steer switch S7-3 to base terminal block B-1.
Check continuity. Replace if defective.
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4. Loose or broken wire #24 from base terminal block B-1 to steer left valve coil 4H-24.
Check continuity. Replace if defective.
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5. Defective steer left valve coil 4H-24.
Check continuity through coil. Replace if defective.
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6. Loose or broken wire #02 from steer left valve coil 4H-24 to base terminal block B-1.
Check continuity. Replace if defective.
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7. Open diode D24.
Check diode. Replace if defective.
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