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Page 132
December 2007
Telescopic Boom Series
Models SJ61T & SJ66T
194312
Section 4 - Troubleshooting Information
Service and Maintenance
4.1-40 No Jib Up from Platform Control Console
1.
Defective jib switch S21.
-
Check continuity through switch while activating jib up function between wires #08 and #35.
2.
Loose or broken wire #35 from jib switch S21 to platform terminal block.
-
Check continuity. Replace if defective.
3.
Loose or broken jumper wire #35 on platform terminal block.
-
Check continuity. Replace if defective.
4.
Open or defective diode D35 in platform terminal block.
-
Check diode. Replace if defective.
5. Loose or broken wire #34A from platform terminal block to valve driver pin #33.
-
Check continuity. Replace if defective.
6.
Loose or broken wire #35 or #02 from platform terminal block to jib up valve 4H-35.
-
Check continuity. Replace if defective.
7.
Defective jib up valve coil 4H-35.
-
Check continuity and resistance through coil. Replace if defective.
4.1-41 No Jib Down from Platform Control Console
1.
Defective jib switch S21.
-
Check continuity through switch while activating jib down function between wires #08 and #34.
2.
Loose or broken wire #34 from jib switch S21 to platform terminal block.
-
Check continuity. Replace if defective.
3.
Loose or broken jumper wire #34 on platform terminal block.
-
Check continuity. Replace if defective.
4.
Open or defective diode D34 in platform terminal block.
-
Check diode. Replace if defective.
5. Loose or broken wire #34A from platform terminal block to valve driver pin #33.
-
Check continuity. Replace if defective.
6.
Loose or broken wire #34 or #02 from platform terminal block to jib down valve 4H-34.
-
Check continuity. Replace if defective.
7.
Defective jib down valve coil 4H-34.
-
Check continuity and resistance through coil. Replace if defective.
4.1-42 Throttle Inoperative, Mid and High (Deutz TD2.9L only)
1.
Loose or broken wire #90 from base terminal block to connector J2 pin #5.
-
Check continuity. Replace if defective.
2.
Loose or broken wire #90 from connector P2 pin #5 94 pin ECU connector pin 80.
-
Check continuity. Replace if defective.
3.
Loose or broken wire #99 from base terminal block to connector J2 pin 4
-
Check continuity. Replace if defective.
4.
Loose or broken wire #99 from connector P2 pin 4 to 94 pin ECU connector pin 74
-
Check continuity. Replace if defective.
5. Resistor R4 open or poor connection at base terminal block.
-
Measure resistance (1KΩ) between 99 and 99A. Check connections. Replace if defective.
6.
Resistor R5 open or poor connection at base terminal block.
-
Measure resistance (3.3KΩ) between 99A and 99B. Check connections. Replace if defective.
7.
Resistor R6 open or poor connection at base terminal block.
-
Measure resistance (3.9KΩ) between 99B and 90. Check connections. 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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