Service manual
SKYJACK, Page 6 SJIII Compact Series
143909
Section 4 - Troubleshooting Information Service and Maintenance
Electrical System (Continued)
7. Loose or broken wire #19B from tilt relay 28CR1 to base terminal block.
Check continuity. Replace if defective. -
8. Loose or broken wire #19B from base terminal block to motor contactor C1.
Check continuity. Replace if defective. -
4.1-6 No Down or Reverse Only Function from Platform Controls
1. Loose or broken wire “A” from proportional controller S7 to lift/drive switch S3.
Check continuity. Replace if defective. -
2. Lift/Drive switch S3 defective.
Check switch. Replace if defective. -
3. Defective PWM card on joystick S7.
Check joystick card. Replace if defective. -
4. Loose or broken wire #13 down or #15 reverse from lift/drive switch S3 to base terminal block.
Check continuity. Replace if defective. -
4.1-7 No Up or Forward Only Function from Platform Control Console
1. Loose or broken wire “B” from proportional controller S7 to lift/drive switch S3.
Check continuity. Replace if defective. -
2. Lift/Drive switch S3 defective.
Check switch. Replace if defective. -
3. Defective PWM card on joystick S7.
Check joystick card. Replace if defective. -
4. Loose or broken wire #14 up or #16 forward from lift/drive switch S3 to base terminal block.
Check continuity. Replace if defective. -
4.1-8 No Up Function from Platform or Base Control Console
1. Loose or broken wire #14 from base terminal block to up valve coil 3H-14.
Check continuity. Replace if defective. -
2. Defective up valve coil 3H-14.
Check continuity through coil. Replace if defective. -
3. Open diode D14-1.
Check diode. Replace if defective. -
4. Open diode D14 (ANSI/CSA) or D14-2 (CE).
Check diode. Replace if defective. -
5. Machine not level. (Above high speed limit switch)
Use on level surface. -
6. Loose or broken wire #19 from base terminal block to tilt switch TS1 (ANSI/CSA only).
Check continuity. Replace if defective. -
7. Defective tilt switch TS1 (ANSI/CSA only).
Test tilt switch. Replace if defective. -
8. Loose or broken wire #28 from tilt switch TS1 to tilt relay 28CR (ANSI/CSA only).
Check continuity. Replace if defective. -
9. Loose or broken wire #02 from tilt switch TS1 to base terminal strip (ANSI/CSA only).
Check continuity. Replace if defective. -
10. Defective tilt relay 28CR (ANSI/CSA only).
Check relay. Replace if defective. -
11. Loose or broken wire #19A from tilt relay 28CR to pump motor contactor (ANSI/CSA only).
Check continuity. Replace if defective. -