SKYJACK, Page 77
SJRT Compact Series
Engine Powered
17. Loose or broken wire #28A from pin #1 on connector (CN14) at the outrigger board to
terminal block (TB1).
- Check continuity. Replace if defective.
4.1-13. Brakes Will Not Release
1. Loose or broken wire #30 from base terminal block (TB1) to brake valve coil (3H-30).
- Check continuity. Replace if defective.
2. Defective brake valve coil (3H-30).
- Check continuity through coil. Replace if defective.
3. Loose or broken wire #02 from brake valve (3H-30) to base terminal block (TB1).
- Check continuity. Replace if defective.
4.1-14. Steer Right Inoperative
1. Defective steer right switch (S7-2) in joystick controller (S7).
- Check switch. Replace if defective.
2. Loose or broken wire #23 from steer right switch (S7-2) to base terminal block (TB1).
- Check continuity. Replace if defective.
3. Loose or broken wire #23 from base terminal block (TB1) to steer right valve coil (4H23).
- Check continuity. Replace if defective.
4. Defective steer right valve coil (4H23).
- Check coil. Replace if defective.
5. Loose or broken wire #02 from steer right valve coil (4H23) to base terminal block (TB1).
- Check continuity. Replace if defective.
6. Open diode (D23).
- Check diode. Replace if defective.
4.1-15. Steer Left Inoperative
1. Defective steer left switch (S7-3) in joystick controller (S7).
- Check switch. Replace if defective.
2. Loose or broken wire #24 from steer left switch (S7-3) to base terminal block (TB1).
- Check continuity. Replace if defective.
3. Loose or broken wire #24 from base terminal block (TB1) to steer left valve coil (4H24).
- Check continuity. Replace if defective.
4. Defective steer left valve coil (4H24).
- Check coil. Replace if defective.
5. Loose or broken wire #02 from steer left valve coil (4H24) to base terminal block (TB1).
- Check continuity. Replace if defective.
6. Open diode (D24).
- Check diode. Replace if defective.
4.1-16. Reverse Drive Inoperative
1. Defective reverse switch (S7-4) in joystick controller (S7).
- Check switch. Replace if defective.
2. Defective joystick controller (S7).
- Check joystick. Replace if defective.
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