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