Skyjack SJ61T - 4.1-4 Engine Will Not Crank from Base; 4.1-5 Engine Will Not Crank from Platform

Telescopic Boom Series
Models SJ61T & SJ66T
194312
December 2007 Page 113
Section 4 - Troubleshooting Information Service and Maintenance
4.1-3 No Power to Base
1. Open or defective base key switch S2.
- Select base position on key switch. Check continuity through base key switch. Replace if
defective.
2. Loose or broken wire #12 from base key switch S2 to Ignition/E-pump switch S5.
- Check continuity. Replace if defective.
3. Loose or broken wire #12 from base key switch S2 to base connector plug A pin #5.
- Check continuity. Replace if defective.
4. Loose or broken wire #12 in boom cable A or its connectors.
- Check for continuity between pins #5 on cable A. Check for loose or corroded connections on
cable connectors. Replace if wire is defective.
5. Loose or broken wire #12 from plug A pin #5 to emergency stop switch S4 in platform control console.
- Check continuity. Replace if defective.
6. Open or defective emergency stop switch S4.
- Check switch is in on position. Check continuity through switch. Replace if defective.
7. Loose or broken wire #10 from emergency stop switch S4 to plug A pin #4.
- Check continuity. Replace if defective.
8. Loose or broken wire #10 in boom cable A or its connectors.
- Check for continuity between pins #4 on cable A. Check for loose or corroded connections on
cable connectors. Replace if wire is defective.
9. Loose or broken wire #10 from plug A pin #4 to base terminal block.
- Check continuity. Replace if defective.
10. Open or defective diode D10.
- Check diode. Replace if defective.
11. Loose or broken wire #10 from base terminal block to Ignition/E-pump (enable) switch S5.
- Check continuity. Replace if defective.
12. Open or defective Ignition/E-pump (enable) switch S5.
- Check switch. Replace if defective
4.1-4 Engine Will Not Crank from Base
1. Loose or broken wire #57A from base start switch S5 to relay 57ACR (Deutz D2011 and GM 3.0l engines).
- Check continuity. Replace if defective.
2. Defective base start switch S5.
- Check start switch. Replace if defective.
4.1-5 Engine Will Not Crank from Platform
NOTE
Engine will not crank from platform with footswitch depressed.
1. Loose or broken wire #4 from emergency stop switch S4 to start switch S6.
- Check continuity. Replace if defective.
2. Defective start switch S6.
- Check continuity through switch. Replace if defective.
3. Loose or broken wire #57 from start switch S6 to relay 08CR.
- Check continuity. Replace if defective.
4. Defective relay 08CR.
- Check continuity through contacts of relay. Replace if defective.
5. Loose or broken wire #57A from relay 08CR to plug B pin #14.
- Check continuity. Replace if defective.