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.
Summary of Contents for SJ61T
Page 1: ...TELESCOPIC BOOMS MODELS SJ61T SJ66T 194312AE February 2017 SERVICE MANUAL...
Page 42: ...Page 42 December 2007 Telescopic Boom Series Models SJ61T SJ66T 194312 Notes...
Page 230: ...Page 230 December 2007 Telescopic Boom Series Models SJ61T SJ66T 194312 Notes...
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