Skyjack SJKB-40-D Operating Maintenance Instructions & Part List page 70

TROUBLE
NO HIGH DRIVE
NO DRIVE ELEVATED
OR TELESCOPED OUT.
NO STEER RIGHT OR
LEFT
SJKB-40-D, SJKB-40-D/F
TROUBLESHOOTING (Cont.)
PROBABLE CAUSE
ELECTRICAL SYSTEM (Cont.)
1. Loose or broken wire #09 from
base terminal block TB3 to riser
limit switch LS1.
2. Defective riser limit switch LS1.
3. Loose or broken wire #06 from riser
limit switch LS1 to base terminal
block TB3.
4. Loose or broken wire #06 from
base terminal block TB3 to
telescope limit switch LS2.
5. Defective telescope limit switch
LS2.
6. Loose or broken wire #59 from
telescope limit switch LS2 to base
terminal block TB3.
7. Loose or broken wire #59 from
base terminal block TB3 to terminal
#5 on EDA board EDA1.
8. Loose or broken wire #59 from
base terminal block TB3 to high
torque valve coil 2H-59.
9. Defective high torque valve coil
2H-59.
10. Loose or broken wire #02 from high
torque valve coil 2H-59 to engine
terminal block TB4.
1. EDA board out of adjustment.
2. MDSD board MDSD1 out of
adjustment.
1. Loose or broken wire #08 from
platform terminal block TB1 to
drive/steer controller S12.
2. Loose or broken wire #114 from
base terminal block TB3 to relay
114CR.
3. Loose or broken wire #02 from
relay 114CR to base terminal block
TB3.
4. Defective relay 114CR.
5. Loose or broken wire #09 from
base terminal block TB3 to relay
114CR.
6. Open diode D114A-1.
7. Open diode D114A-2.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
1.
2.
1.
2.
3.
4.
5.
6.
7.
JUN. 1999
REMEDY
Check Continuity. Replace if
defective.
Check Switch. Replace if
defective.
Check Continuity. Replace if
defective.
Check Continuity. Replace if
defective.
Check Switch. Replace if
defective.
Check Continuity. Replace if
defective.
Check Continuity. Replace if
defective.
Check Continuity. Replace if
defective.
Check Continuity through coil.
Replace if defective.
Check Continuity. Replace if
defective.
Refer to section 5, "EDA board
adjustment procedure".
Refer to section 5, "MDSD board
adjustment procedure".
Check Continuity. Replace if
defective.
Check Continuity. Replace if
defective.
Check Continuity. Replace if
defective.
Check Relay. Replace if
defective.
Check Continuity. Replace if
defective.
Check Diode. Replace if
defective.
Check Diode. Replace if
defective.
SECTION 4, Page 19