Skyjack SJ61T Service Manual

Telescopic Boom Series
Models SJ61T & SJ66T
194312
December 2007 Page 137
Section 4 - Troubleshooting Information Service and Maintenance
15. Loose or broken wire #45 in cable A or its connectors.
- Check for continuity between pins #20 on cable A. Check for loose or corroded connections
on cable connectors. Replace if wire is defective.
16. Loose or broken wire #45 from base plug A pin #20 to relay 45CR1.
- Check continuity. Replace if defective.
17. Loose or broken wire #02 from base terminal block to relay 45CR1.
- Check continuity. Replace if defective.
18. Loose or broken wire #09 from base terminal block to relay 45CR1.
- Check continuity. Replace if defective.
19. Defective relay 45CR1.
- Check relay. Replace if defective.
20. Loose or broken wire #45A from base terminal block to turret harness plug pin #17.
- Check continuity. Replace if defective.
21. Loose or broken wire #45A or #02 from turret harness plug to 2 speed valve 3H-45A.
- Check continuity. Replace if defective.
22. Defective 2 speed valve 3H-45A.
- Check continuity and resistance through coil. Replace if defective.
4.1-50 No Elevated Drive
NOTE
Aerial platform must be level to drive elevated.
1. Loose or broken wire #09 or #02 from base terminal block to angle transducer/ tilt switch AT1.
- Check continuity. Replace if defective.
2. Misadjusted, no output or defective angle transducer/ tilt switch AT1.
- Adjust angle transducer/ tilt switch if required. Check for 12 volts on wire #28. If no voltage
present with angle transducer/ tilt switch adjusted it is defective, replace angle transducer/ tilt
switch.
3. Loose or broken wire #28 from level sensor TS1 to plug B pin #7.
- Check continuity. Replace if defective.
4. Loose or broken wire #28 in cable B or its connectors.
- Check for continuity between pins #7 on cable B. Check for loose or corroded connections on
cable connectors. Replace if wire is defective.
5. Loose or broken wire #28 from plug B pin #7 to platform terminal block.
- Check continuity. Replace if defective.
6. Loose or broken wire #28 from platform terminal block to valve driver pin #18.
- Check continuity. Replace if defective.
4.1-51 No Left Steer
NOTE
This function times out after 15 seconds when operating
this function only.
1. Loose or broken wire #24 from drive joystick A2 to platform terminal block.
- Check continuity. Replace if defective.
2. Open or defective diode D24 in platform terminal block.
- Check diode. Replace if defective.
3. Loose or broken wire #24 from platform terminal block to relay 17ACR1.
- Check continuity. Replace if defective.
4. Defective N/C contacts in relay 17ACR1.
- Check relay. Replace if defective.
5. Loose or broken wire #24A from relay 17ACR1 to plug A pin #10 in platform control console.
- Check continuity. Replace if defective.

Skyjack SJ61T Specifications

General

Brand	Skyjack
Model	SJ61T
Category	Lifting Systems
Language	English