15 No High Speed Drive - Skyjack SJ82 T Service Manual

Section 4 – Troubleshooting Information

4.2-15 No High Speed Drive

NOTE
Aerial platform must be level and boom must be below 15 degrees and fully retracted for high speed drive.
1. Loose or broken wire #09 from base terminal
block to limit switch LS2.
2. Open or defective limit switch LS2.
3. Loose or broken wire #29 from limit switch LS2
to base terminal block.
4. Loose or broken wire #29 from base terminal
block to limit switch LS3.
5. Open or defective limit switch LS3.
6. Loose or broken wire #59 from limit switch LS3
to base terminal block.
7. Loose or broken wire #59 from base terminal
block to plug B pin #15.
8. Loose or broken wire #59 in boom cable B or its
connectors.
9. Loose or broken wire #59 from plug B pin #15
in platform control console to platform terminal
block.
10. Loose or broken wire #59 from platform terminal
block to valve driver pin #31.
11. Defective valve driver channel input for high drive
enable.
12. Loose or broken wire #59 from platform terminal
block to torque switch S48.
13. Open or defective torque switch S48.
14. Loose or broken wire #45 from torque switch S48
to plug A pin #20 in platform control console.
15. Loose or broken wire #45 in cable A or its
connectors.
229040ABA
142
Check continuity. Replace if defective.
Ensure boom is below 15 degrees. Adjust switch if
required. Check continuity through switch.Replace
if required.
Check continuity. Replace if defective.
Check continuity. Replace if defective.
Ensure boom is fully retracted. Adjust switch if re-
quired. Check continuity through switch. Replace
if defective.
Check continuity. Replace if defective.
Check continuity. Replace if defective.
Check for continuity between pins #15 on cable B.
Check for loose or corroded connections on cable
connectors. Replace if wire is defective.
Check continuity. Replace if defective.
Check continuity. Replace if defective.
See section 5 for OCM pin voltage reference.
Check continuity. Replace if defective.
Check continuity through switch while activating
low torque function between wires #59 and #45. If
no continuity found replace switch.
Check continuity. Replace if defective.
Check for continuity between pins #20 on cable A.
Check for loose or corroded connections on cable
connectors. Replace if wire is defective.
Electrical System
SJ82 T, SJ86 T