Skyjack SJKB-40-D - Page 72

SECTION 4, Page 21SJKB-40-D, SJKB-40-D/F JUN. 1999
TROUBLESHOOTING (Cont.)
TROUBLE PROBABLE CAUSE REMEDY
ELECTRICAL SYSTEM (Cont.)
DRIVE AND STEER WILL
NOT CHANGE DIREC-
TIONS
1. Loose or broken wire #09 from
base terminal block TB3 to
directional sensing switch S28.
2. Defective directional sensing
switch S28.
3. Loose or broken wire #17 from
directional sensing switch S28 to
base terminal block TB3.
4. Loose or broken wire #17 from
base terminal block TB3 to steer
relays 17CR1 and 17CR2, drive
relays 17CR3 and 17CR4.
5. Defective steer relays 17CR1 and
17CR2 or drive relays 17CR3 and
17CR4.
6. Loose or broken wire #02 from
steer relays 17CR1 and 17CR2 or
drive relays 17CR3 and 17CR4 to
base terminal block TB3.
1. Check Continuity. Replace if
defective.
2. Check switch. Replace if
defective.
3. Check Continuity. Replace if
defective.
4. Check Continuity. Replace if
defective.
5. Check relays. Replace if
defective.
6. Check Continuity. Replace if
defective.
BRAKES WILL NOT RE-
LEASE
1. Defective switch S12-4 in drive/
steer controller S12.
2. Loose or broken wire #26 from
drive/steer controller S12 to
platform terminal block TB2.
3. Loose or broken wire #26 from
platform terminal block TB2 to
base terminal block TB3.
4. Loose or broken wire #26 from
base terminal block TB3 to relay
51CR2.
5. Defective relay 51CR2.
6. Loose or broken wire #26A from
relay 51CR2 to relay 26ACR.
7. Loose or broken wire #02 from
relay 26ACR to base terminal
block TB3.
8. Defective relay 26ACR.
9. Loose or broken wire #09 from
base terminal block TB3 to relay
26ACR.
10. Loose or broken wire #26B from
relay 26ACR to base terminal
block TB3.
11. Loose or broken wire #26B from
base terminal block TB3 to brake
valve coil 3H-26B.
1. Check switch. Replace if
defective.
2. Check Continuity. Replace if
defective.
3. Check Continuity. Replace if
defective.
4. Check Continuity. Replace if
defective.
5. Check Relay. Replace if
defective.
6. Check Continuity. Replace if
defective.
7. Check Continuity. Replace if
defective.
8. Check Relay. Replace if
defective.
9. Check Continuity. Replace if
defective.
10. Check Continuity. Replace if
defective.
11. Check Continuity. Replace if
defective.