Skyjack SJ 4632 - 11 No up Function from Base Control Console; 13 Steer Only Inoperative; 14 Drive Only Inoperative; 15 No Drive or Steer When Platform Fully Lowered

SKYJACK, Page 8 SJIII Conventional Series
143911
Section 4 - Troubleshooting InformationService and Maintenance
Electrical System (Continued)
7. Defective down valve 2H-13B.
Check continuity through coil. Replace if defective. -
8. Defective lift cylinder holding valve 2H-13B-1 or holding valve 2H-13B-2.
Check continuity through coil. Replace if defective. -
9. Loose or broken wire #02 from holding valve 2H-13B-1 or holding valve 2H-13B-2 or down valve 2H-13B
to base terminal block.
Check continuity. Replace if defective. -
4.1-11 No Up Function from Base Control Console
1. Defective up/down switch S2.
Check switch. Replace if defective. -
2. Loose or broken wire #14E from up/down switch S2 to base terminal switch.
Check continuity. Replace if defective. -
3. Open diode D14E-1.
Check diode. Replace if defective. -
4. Open diode D14E (ANSI/CSA) or diode D14E-2 (CE).
Check diode. Replace if defective. -
4.1-12 No Down Function from Base Control Console
1. Defective up/down switch S2.
Check switch. Replace if defective. -
2. Loose or broken wire #13 from up/down switch S2 to base terminal block.
Check continuity. Replace if defective. -
4.1-13 Steer Only Inoperative
1. Defective relay 17CR.
Check relay. Replace if defective. -
2. Loose or broken wire #17B from diodes D23 and D24 to base terminal block TB1.
Check continuity. Replace if defective. -
3. Loose or broken wire #17B from 17CR steer relay to base terminal block TB1.
Check continuity. Replace if defective. -
4. Loose or broken wire #17C from 17CR steer relay to diodes D17C and D17C-1.
Check continuity. Replace if defective. -
5. Open or defective diode D17C or diode D17C-1.
Check diode. Replace if defective. -
4.1-14 Drive Only Inoperative
1. Open or defective diode D17-1.
Check diode. Replace if defective. -
4.1-15 No Drive or Steer when Platform Fully Lowered
1. Loose or broken wire #71 from base terminal block to drive override limit switch LS6.
Check continuity. Replace if defective. -
2. Defective drive override switch LS6.
Check switch. Replace if defective. -
3. Loose or broken wire #19 from drive override limit switch LS6 to base terminal block.
Check continuity. Replace if defective. -