SKYJACK, Page 79
SJRT Compact Series
Engine Powered
9. Loose or broken wire #02 from forward valve coil to base terminal block (TB1).
- Check continuity. Replace if defective.
10. Loose or broken wire #16A from base terminal block (TB1) to relay (20ACR1) (only in parallel drive).
- Check continuity. Replace if defective.
11. Defective relay (20ACR1) (only in parallel drive).
- Check relay. Replace if defective.
12. Loose or broken wire #16B from relay (20ACR1) to parallel forward valve coil (4H-16B) (only in
parallel drive).
- Check continuity. Replace if defective.
13. Loose or broken wire #02 from base terminal block (TB1) to parallel forward valve coil. (4H-16B)
(only in parallel drive).
- Check continuity. Replace if defective.
14. Defective parallel forward valve coil (4H-16B) (only in parallel drive).
- Check coil. Replace if defective.
15. Open diode (D16A-1) or (D16A-2).
- Check diodes. Replace if defective.
4.1-18. First Drive Speed and Steering Inoperative
1. Loose or broken wire #21 from base terminal block (TB1) to relay (17CR).
- Check continuity. Replace if defective.
2. Defective relay (17CR).
- Check relay. Replace if defective.
3. Loose or broken wire #18A from relay (17CR) to base terminal block (TB1).
- Check continuity. Replace if defective.
4. Loose or broken wire #18A from base terminal block (TB1) to relay (28ACR1).
- Check continuity. Replace if defective.
5. Defective relay (28ACR1).
- Check relay. Replace if defective.
6. Loose or broken wire #18B from relay (28ACR1) to base terminal block (TB1).
- Check continuity. Replace if edefective.
7. Loose or broken wire #18B from base terminal block (TB1) to small pump dump valve coil (2H-18B)
- Check continuity. Replace if defective.
8. Defective small pump dump valve coil (2H18B).
- Check coil. Replace if defective.
9. Loose or broken wire #02 from small pump dump solenoid (2H18B) to base terminal block.
- Check continuity. Replace if defective.
4.1-19. Second Drive Speed Inoperative
1. Defective second speed switch (S7-1) in joystick controller (S7).
- Check switch. Replace if defective.
2. Defective joystick controller (S7).
- Check joystick. Replace if defective.
3. Loose or broken wire #19 from joystick controller (S7-1) to relay (19CR).
- Check continuity. Replace if defective.
4. Loose or broken wire #02 from platform terminal block (TB1) to relay (19CR).
- Check continuity. Replace if defective.
5. Defective relay (19CR).
- Check relay. Replace if defective.
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