126
SJ82 T, SJ86 T
229040ABA
Section 4 – Troubleshooting Information
Electrical System
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.
No Jib Up Or Down
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.
No Manual Platform Level Up
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.
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