Skyjack SJKB-40-D Operating Maintenance Instructions & Part List page 71

TROUBLE
NO STEER LEFT
NO STEER RIGHT
SECTION 4, Page 20
TROUBLESHOOTING (Cont.)
PROBABLE CAUSE
ELECTRICAL SYSTEM (Cont.)
1. Defective left steer switch S12-3.
2. Loose or broken wire #24 from
drive/steer controller S12 to
platform terminal block TB2.
3. Loose or broken wire #24 from
Platform terminal block TB2 to
base terminal block TB3.
4. Loose or broken wire #24 from base
terminal block TB3 to relay 17CR1.
5. Defective relay 17CR1.
6. Loose or broken wire #24A from
relay 17CR1 to base terminal block
TB3.
7. Loose or broken wire #24A from
base terminal block TB3 to steer
left valve coil 4H-24A.
8. Defective steer left valve coil 4H-
24A.
9. Loose or broken wire #02 from
steer left valve coil 4H-24A to base
terminal block TB3.
10. Open diode D24.
1. Defective right steer switch S12-
2.
2. Loose or broken wire #23 from
drive/steer controller S12 to
platform terminal block TB2.
3. Loose or broken wire #23 from
Platform terminal block TB2 to
base terminal block TB3.
4. Loose or broken wire #23 from base
terminal block TB3 to relay 17CR2.
5. Defective relay 17CR2.
6. Loose or broken wire #23A from
relay 17CR2 to base terminal block
TB3.
7. Loose or broken wire #23A from
base terminal block TB3 to steer
right valve coil 4H-23A.
8. Defective steer right valve coil 4H-
23A.
9. Loose or broken wire #02 from
steer right valve coil 4H-24A to
base terminal block TB3.
10. Open diode D23.
JUN. 1999
REMEDY
1. Check switch.
defective.
2. Check Continuity. Replace if
defective.
3. Check Continuity. Replace if
defective.
4. Check Continuity. Replace if
defective.
5. Check Relay.
defective.
6. Check Continuity. Replace if
defective.
7. Check Continuity. Replace if
defective.
8. Check Continuity through coil.
Replace if defective.
9. Check Continuity. Replace if
defective.
10. Check Diode.
defective.
1. Check switch.
defective.
2. Check Continuity. Replace if
defective.
3. Check Continuity. Replace if
defective.
4. Check Continuity. Replace if
defective.
5. Check Relay.
defective.
6. Check Continuity. Replace if
defective.
7. Check Continuity. Replace if
defective.
8. Check Continuity through coil.
Replace if defective.
9. Check Continuity. Replace if
defective.
10. Check Diode.
defective.
SJKB-40-D, SJKB-40-D/F
Replace if
Replace if
Replace if
Replace if
Replace if
Replace if