SKYJACK, Page 78
SJRT Compact Series
Engine Powered
3. Loose or broken wire #A from reverse swtich (S7-4) to contacts on LIFT/DRIVE select switch be-
tween wire #A and wire #15.
- Check continuity. Replace if defective.
4. Loose or broken wire #15 from LIFT/DRIVE select switch to relay (15CR).
- Check continuity. Replace if defective.
5. Defective relay (15CR).
- Check relay. Replace if defective.
6. Loose or broken wire #02 from relay (15CR) to base terminal block.
- Check continuity. Replace if defective.
7. Loose or broken wire #10A from base terminal block to relay (15CR).
- Check continuity. Replace if defective.
8. Loose or broken wire #15A from relay (15CR) to reverse valve coil (4H-15A).
- Check continuity. Replace if defective.
9. Loose or broken wire #02 from reverse valve coil to base terminal block (TB1).
- Check continuity. Replace if defective.
10. Loose or broken wire #15A from base terminal block (TB1) to relay (20ACR2) (only in parallel drive).
- Check continuity. Replace if defective.
11. Defective relay (20ACR2) (only in parallel drive).
- Check relay. Replace if defective.
12. Loose or broken wire #15B from relay (20ACR2) to parallel reverse valve coil (4H-15B) (only in
parallel drive).
- Check continuity. Replace if defective.
13. Loose or broken wire #02 from base terminal block (TB1) to parallel reverse valve coil. (4H-15B)
(only in parallel drive).
- Check continuity. Replace if defective.
14. Defective parallel reverse valve coil (4H-15B) (only in parallel drive).
- Check coil. Replace if defective.
15. Open diode (D15A-1) or (D15A-2).
- Check diodes. Replace if defective.
4.1-17. Forward Drive Inoperative
1. Defective forward switch (S7-5) in joystick controller (S7).
- Check switch. Replace if defective.
2. Defective joystick controller (S7).
- Check joystick. Replace if defective.
3. Loose or broken wire #B from forward switch (S7-5) to contacts on LIFT/DRIVE select switch
between wire #B and wire #16.
- Check continuity. Replace if defective.
4. Loose or broken wire #16 from LIFT/DRIVE select switch to relay (16CR).
- Check continuity. Replace if defective.
5. Defective relay (16CR).
- Check relay. Replace if defective.
6. Loose or broken wire #02 from relay (16CR) to base terminal block.
- Check continuity. Replace if defective.
7. Loose or broken wire #10A from base terminal block to relay (16CR).
- Check continuity. Replace if defective.
8. Loose or broken wire #16A from relay (16CR) to forward valve coil (4H-16A).
- Check continuity. Replace if defective.
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