Page 124
December 2007
Telescopic Boom Series
Models SJ61T & SJ66T
194312
Section 4 - Troubleshooting Information
Service and Maintenance
3.
Open or defective diode D34-1.
-
Check diode. Replace if defective.
4.
Loose or broken wire #35A from diode D34-1 to resistor R2.
-
Check continuity. Replace if defective.
5. Loose or broken wire #34 from jib down switch S17 to base connector plug A pin #16.
-
Check continuity. Replace if defective.
6.
Loose or broken wire #34 in boom cable A or its connectors.
-
Check for continuity between pins #16 on cable A. Check for loose or corroded connections
on cable connectors. Replace if wire is defective.
7.
Loose or broken wire #34 from plug A pin #16 to platform terminal block.
-
Check continuity. Replace if defective.
8.
Loose or broken wire #34 from platform terminal block to jib down valve 4H-34.
-
Check continuity. Replace if defective.
9.
Loose or broken wire #02 from platform terminal block to jib down valve 4H-34.
-
Check continuity. Replace if defective.
10.
Defective jib down valve coil 4H-34.
-
Check continuity and resistance through coil. Replace if defective.
4.1-25 No Jib Up Or Down From Base Control Console
1.
Loose or broken wire #35A from resistor R2 to base key switch S2.
-
Check continuity. Replace if defective.
2.
Open or defective base key switch S2.
-
Select base control console on switch. Check continuity through switch. Replace if defective.
3.
Loose or broken wire #42 from base key switch S2 to turret harness plug pin #16.
-
Check continuity. Replace if defective.
4.
Loose or broken wire #42 from turret harness plug pin #16 to proportional flow enable valve 2H-42.
-
Check continuity. Replace if defective.
5. Loose or broken wire #02 from turret harness plug to proportional flow enable valve 2H-42.
-
Check continuity. Replace if defective.
6.
Defective proportional flow enable valve coil 2H-42.
-
Check continuity and resistance through coil. Replace if defective.
4.1-26 No Manual Platform Level Up From Base Control Console
1.
Loose or broken wire #10A from ignition/ pump switch S5 to platform level switch S15.
-
Check continuity. Replace if defective.
2.
Defective platform level switch S15.
-
Check continuity through switch while activating level up function between wires #10A and
#41. If no continuity found replace switch.
3.
Loose or broken wire #41 from platform level switch S15 to base terminal block.
-
Check continuity. Replace if defective.
4.
Loose or broken wire #41 from base terminal block to turret harness pin plug pin#15.
-
Check continuity. Replace if defective.
5. Loose or broken wire #41 from turret harness pin plug pin#15 platform level up valve 4H-41.
-
Check continuity. Replace if defective.
6.
Loose or broken wire #02 from turret harness pin plug platform level up valve 4H-41.
-
Check continuity. Replace if defective.
7.
Defective platform level up valve coil 4H-41.
-
Check continuity and resistance through coil. Replace if defective.
8.
Loose or broken wire #41 from base terminal block to base connector plug B pin #11.
-
Check continuity. Replace if defective.
9.
Loose or broken wire #41 in boom cable B or its connectors.
-
Check for continuity between pins #11 on cable B. Check for loose or corroded connections
on cable connectors. Replace if wire is 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...
Page 231: ......
Page 232: ...www skyjack com P litelig lift l sninger av folk som bryr seg...
