Service manual

SKYJACK, Page 8 SJIII Compact Series
143909
Section 4 - Troubleshooting Information Service and Maintenance
Electrical System (Continued)
3. Open diode D14E-1.
Check diode. Replace if defective. -
4. Open diode D14E.
Check diode. Replace if defective. -
4.1-12 No Down Function from Base Control Console
1. Defective up/down switch S2.
Check switch. Replace if defective. -
2. Loose or broken wire #13 from up/down switch S2 to base terminal block.
Check continuity. Replace if defective. -
4.1-13 Platform Lowers Slowly from Platform and Base (3215 only)
1. Deceleration limit switch LS7 stuck, out of adjustment or is defective.
Readjust limit switch so it returns to the normally closed position at 14” before completely -
stowed. Check the limit switch is functioning. Replace if defective.
4.1-14 Platform does not Decelerate when Lowering (3215 only)
1. Deceleration limit switch LS7 out of adjustment.
Readjust limit switch so it returns to the normally closed position at 14” before completely -
stowed. Check the limit
switch is functioning. Replace if defective. -
2. Loose or broken wire #13A (ANSI/CSA) or #13C (CE) from terminal strip to deceleration valve coil
2H-13A (ANSI/CSA) or 2H-13C (CE).
Check continuity. Replace if defective. -
3. Loose or broken wire #02 from terminal strip to deceleration valve coil 2H-13A (ANSI/CSA) or 2H-13C
(CE).
Check continuity. Replace if defective. -
4. Defective deleration valve coil 2H-13A (ANSI/CSA) or 2H-13C (CE).
Check coil. Replace if defective. -
4.1-15 Platform Lifts Slowly from Platform and Base Control console
1. Open diode D14-1.
Check diode. Replace if defective. -
4.1-16 Steer Only Inoperative
1. Defective relay 17CR.
Check relay. Replace if defective. -
2. Loose or broken wire #59D from diodes D23-1 and D24-1 to base terminal block TB1.
Check continuity. Replace if defective. -
3. Loose or broken wire #59D from 17CR steer relay to base terminal block TB1.
Check continuity. Replace if defective. -
4. Loose or broken wire #59 from 17CR steer relay to base terminal block TB1.
Check continuity. Replace if defective. -
4.1-17 Drive Only Inoperative
1. Open diode D17.
Check diode. Replace if defective. -