Skyjack SJKB-40-D Operating Maintenance Instructions & Part List page 67

TROUBLE
PLATFORM WILL NOT
LEVEL DOWN FROM
PLATFORM CONTROLS
PLATFORM WILL NOT
LEVEL UP FROM PLAT-
FORM CONTROLS
UNIT WILL NOT DRIVE
NOTE: Platform must be
over non steering axle
for these tests.
SECTION 4, Page 16
TROUBLESHOOTING (Cont.)
PROBABLE CAUSE
ELECTRICAL SYSTEM (Cont.)
1. Defective platform level switch
S17
2. Loose or broken wire #40 from
platform level switch S17 to
platform terminal block TB2.
3. Loose or broken wire #40 from
platform terminal block TB2 to
base terminal block TB3.
1. Defective platform level switch
S17
2. Loose or broken wire #41 from
platform level switch S17 to
platform terminal block TB2.
3. Loose or broken wire #41 from
platform terminal block TB2 to
base terminal block TB3.
1. Loose or broken wire #08 from
platform terminal block TB1 to
relay 08CR2.
2. Loose or broken wire #02 from
relay 08CR2 to platform terminal
block TB1.
3. Defective relay 08CR2.
4. Loose or broken wire #62 from EDA
board EDA1 to relay 51CR.
5. Loose or broken wire #51 from
base terminal block TB3 to relay
51CR.
6. Loose or broken wire #02 from
relay 51CR to base terminal block
TB3.
7. Defective relay 51CR.
8. Loose or broken wire #62A from
relay 51CR to relay 17CR4.
9. Defective relay 17CR4.
10. Loose or broken wire #62B from
relay 17CR4 to base terminal block
TB3.
11. Loose or broken wire #62B from
base terminal block TB3 to
platform terminal block TB2.
12. Loose or broken wire #62B from
platform terminal block TB2 to
relay 08CR2.
JUN. 1999
REMEDY
1. Check Switch.
defective.
2. Check Continuity. Replace if
defective.
3. Check Continuity. Replace if
defective.
1. Check Switch.
defective.
2. Check Continuity. Replace if
defective.
3. Check Continuity. Replace if
defective.
1. Check Continuity. Replace if
defective.
2. Check Continuity. Replace if
defective.
3. Check Relay.
defective.
4. Check Continuity. Replace if
defective.
5. Check Continuity. Replace if
defective.
6. Check Continuity. Replace if
defective.
7. Check Relay.
defective.
8. Check Continuity. Replace if
defective.
9. Check Relay.
defective.
10. Check Continuity. Replace if
defective.
11. Check Continuity. Replace if
defective.
12. Check Continuity. Replace if
defective.
SJKB-40-D, SJKB-40-D/F
Replace if
Replace if
Replace if
Replace if
Replace if