Page 122
December 2007
Telescopic Boom Series
Models SJ61T & SJ66T
194312
Section 4 - Troubleshooting Information
Service and Maintenance
3.
Loose or broken wire #39 from telescope switch S14 to base terminal block.
-
Check continuity. Replace if defective.
4.
Loose or broken wire #39 from base terminal block to turret harness plug pin #13.
-
Check continuity. Replace if defective.
5. Loose or broken wire #39 from turret harness plug pin #13 to telescope extend valve 3H-39.
-
Check continuity. Replace if defective.
6.
Loose or broken wire #02 from turret harness plug to telescope extend valve 3H-39.
-
Check continuity. Replace if defective.
7.
Defective telescope extend valve coil 3H-39.
-
Check continuity and resistance through coil. Replace if defective.
4.1-20 No Platform Rotate Left From Base Control Console
1.
Loose or broken wire #10A from ignition/ pump switch S5 to platform rotate switch S16.
-
Check continuity. Replace if defective.
2.
Defective platform rotate switch S16.
-
Check continuity through switch while activating rotate left function between wires #10A and
#36. If no continuity found, replace switch
.
3.
Open or defective diode D36-1.
-
Check diode. Replace if defective.
4.
Loose or broken wire #37A from diode D36-1 to resistor R2.
-
Check continuity. Replace if defective.
5. Loose or broken wire #36 from platform rotate switch S16 to base connector plug A pin #18.
-
Check continuity. Replace if defective.
6.
Loose or broken wire #36 in boom cable A or its connectors.
-
Check for continuity between pins #18 on cable A. Check for loose or corroded connections
on cable connectors. Replace if wire is defective.
7.
Loose or broken wire #36 plug A pin #18 to platform terminal block.
-
Check continuity. Replace if defective.
8.
Loose or broken wire #36 from platform terminal block to platform rotate left valve 4H-36.
-
Check continuity. Replace if defective.
9.
Loose or broken wire #02 from platform terminal block to platform rotate left valve 4H-36.
-
Check continuity. Replace if defective.
10.
10. Defective platform rotate left valve coil 4H-36.
-
Check continuity and resistance through coil. Replace if defective.
4.1-21 No Platform Rotate Right from Base Control Console
1.
Loose or broken wire #10A from ignition/ pump switch S5 to platform rotate switch S16.
-
Check continuity. Replace if defective.
2.
Defective platform rotate switch S16.
-
Check continuity through switch while activating rotate right function between wires #10A and
#37. If no continuity found, replace switch.
3.
Open or defective diode D37-1.
-
Check diode. Replace if defective.
4.
Loose or broken wire #37A from diode D37-1 to resistor R2.
-
Check continuity. Replace if defective.
5. Loose or broken wire #37 from platform rotate switch S16 to base connector plug A pin #19.
-
Check continuity. Replace if defective.
6.
Loose or broken wire #37 in boom cable A or its connectors.
-
Check for continuity between pins #19 on cable A. Check for loose or corroded connections
on cable connectors. Replace if wire is defective.
7.
Loose or broken wire #37 plug A pin #19 to platform terminal block.
-
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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