Page 130
December 2007
Telescopic Boom Series
Models SJ61T & SJ66T
194312
Section 4 - Troubleshooting Information
Service and Maintenance
9.
Loose or broken wire #38 from valve driver pin #9 to plug B pin #8 in platform control console.
-
Check continuity. Replace if defective.
10.
Loose or broken wire #38 in boom cable B or its connectors.
-
Check for continuity between pins #8 on cable B. Check for loose or corroded connections
onable connectors. Replace if wire is defective.
11.
Loose or broken wire #38 from base connector plug B pin #8 to base terminal block.
-
Check continuity. Replace if defective.
12.
Loose or broken wire #38 from base terminal block to turret harness plug pin #12.
-
Check continuity. Replace if defective.
13.
Loose or broken wire #38 from turret harness plug pin #12 to telescope in valve 3H-38.
-
Check continuity. Replace if defective.
14.
Loose or broken wire #02 from turret harness plug to telescope in valve 3H-38.
-
Check continuity. Replace if defective.
15. Defective telescope in valve coil 3H-38.
-
Check continuity and resistance through coil. Replace if defective.
4.1-36 No Telescope Out from Platform Control Console
1.
Loose or broken purple wire from speed controller to resistor R9 in platform control console.
-
Check continuity. Replace if defective.
2.
Open or defective resistor R9.
-
Check resistor. Replace if defective.
3.
Loose or broken wire #38B from resistor R9 to telescope switch S18.
-
Check continuity. Replace if defective.
4.
Open or defective resistor R10.
-
Check resistor. Replace if defective.
5. Defective telescope switch S18.
-
Check continuity through switch while activating the function between wires #38C and #38A.
6.
Loose or broken wire #38A from telescope switch S18 to valve driver pin #32.
-
Check continuity. Replace if defective.
7.
Voltage out of range at valve driver pin #32.
-
Check voltage while operating telescope out. Voltage should be between 2.25 and 2.75 volts.
Refer to telescope voltage reference table in section 5 if out of this range.
8.
No output on pin #5 of the valve driver to wire #20B.
-
Check pin #5 for 12 volts. If no voltage present with foot on footswitch check section 5 for
OCM pin voltage reference.
9.
No output on pin #12 of the valve driver to wire #39.
-
Check pin #12 for minimum 3.5 volts. If no voltage present with foot on footswitch check section
5 for OCM pin voltage reference.
10.
Loose or broken wire #39 from valve driver pin #12 to plug B pin #9 in platform control console.
-
Check continuity. Replace if defective.
11.
Loose or broken wire #39 in boom cable B or its connectors.
-
Check for continuity between pins #9 on cable B. Check for loose or corroded connections on
cable connectors. Replace if wire is defective.
12.
Loose or broken wire #39 from base connector plug B pin #9 to base terminal block.
-
Check continuity. Replace if defective.
13.
Loose or broken wire #39 from base terminal block to turret harness plug pin #13.
-
Check continuity. Replace if defective.
14.
Loose or broken wire #39 from turret harness plug pin #13 to telescope out valve 3H-39.
-
Check continuity. Replace if defective.
15. Loose or broken wire #02 from turret harness plug to telescope out valve 3H-39.
-
Check continuity. Replace if defective.
16.
Defective telescope out valve coil 3H-39.
-
Check continuity and resistance through coil. 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...
Page 231: ......
Page 232: ...www skyjack com P litelig lift l sninger av folk som bryr seg...
