Telescopic Boom Series
Models SJ61T & SJ66T
194312
December 2007
Page 123
Section 4 - Troubleshooting Information
Service and Maintenance
8.
Loose or broken wire #37 from platform terminal block to platform rotate right valve 4H-37.
-
Check continuity. Replace if defective.
9.
Loose or broken wire #02 from platform terminal block to platform rotate right valve 4H-37.
-
Check continuity. Replace if defective.
10.
10. Defective platform rotate right valve coil 4H-37.
-
Check continuity and resistance through coil. Replace if defective.
4.1-22 No Platform Rotate Left or Right from Base Control Console
1.
Open resistor R2.
-
Check resistor for 10 ohms (66T) or 13 ohms (61T). If no resistance found, replace resistor.
2.
Loose or broken wire #35A from resistor R2 to base key switch S2.
-
Check continuity. Replace if defective.
3.
Open or defective base key switch S2.
-
Select base control on switch. Check continuity through switch. Replace if defective.
4.
Loose or broken wire #42 from base key switch S2 to turret harness plug pin #16.
-
Check continuity. Replace if defective.
5. Loose or broken wire #42 from turret harness plug pin #16 to proportional flow enable valve 2H-42.
-
Check continuity. Replace if defective.
6.
Loose or broken wire #02 from turret harness plug to proportional flow enable valve 2H-42.
-
Check continuity. Replace if defective.
7.
Defective proportional flow enable valve coil 2H-42.
-
Check continuity and resistance through coil. Replace if defective.
4.1-23 No Jib Up from Base Control Console
1.
Loose or broken wire #10A from ignition/ pump switch S5 to jib switch S17.
-
Check continuity. Replace if defective.
2.
Defective jib up switch S17.
-
Check continuity through switch while activating jib up function between wires #10A and #35.
If no continuity found, replace switch.
3.
Open or defective diode D35-1.
-
Check diode. Replace if defective.
4.
Loose or broken wire #35A from diode D35-1 to resistor R2.
-
Check continuity. Replace if defective.
5. Loose or broken wire #35 from jib up switch S17 to base connector plug A pin #17.
-
Check continuity. Replace if defective.
6.
Loose or broken wire #35 in boom cable A or its connectors.
-
Check for continuity between pins #17 on cable A. Check for loose or corroded connections
on cable connectors. Replace if wire is defective.
7.
Loose or broken wire #35 from plug A pin #17 to platform terminal block.
-
Check continuity. Replace if defective.
8.
Loose or broken wire #35 from platform terminal block to jib up valve 4H-35.
-
Check continuity. Replace if defective.
9.
Loose or broken wire #02 from platform terminal block to jib up valve 4H-35.
-
Check continuity. Replace if defective.
10.
10. Defective jib up valve coil 4H-35.
-
Check continuity and resistance through coil. Replace if defective.
4.1-24 No Jib Down from Base Control Console
1.
Loose or broken wire #10A from ignition/ pump switch S5 to jib switch S17.
-
Check continuity. Replace if defective.
2.
Defective jib down switch S17.
-
Check continuity through switch while activating jib down function between wires #10A and
#34. If no continuity found, replace switch.
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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Page 232: ...www skyjack com P litelig lift l sninger av folk som bryr seg...
