Skyjack SJ16 Service Manual

80
213558ADA
SJ12, SJ16
Section 4 – Troubleshooting Information Electrical System Troubleshooting
4.2-15 No Drive Forward or Reverse
1. Loose or broken wire #A or #B from Joystick S7
connector pin #4 or #6 to Diode DA or Diode DB
on Lift/Off/Drive switch S3.
Check continuity. Replace if defective.
2. Open diode DA or DB on Lift/Off/Drive switch S3. Check diodes. Replace if defective.
3. Loose or broken wire #A or #B from Diode DA or
DB to Lift/Off/Drive switch S3.
Check continuity. Replace if defective.
4. Open or defective Lift/Off/Drive switch S3.
Operate switch. Check continuity between wire #B
and wire #15 or #16 when Drive selected.Check
continuity between wire #8B and wire #12B when
Drive selected.Replace if defective.
5. Loose or broken wire #07A from Platform
Emergency Stop switch S4 to Mast function
cable.
Check continuity. Replace if defective.
6. Loose or broken wire #07A in Mast function
cable or its connections.
Check continuity between Platform connector
X1 and Control box connection pin #C1/C2/C3.
Check for loose or corroded connections on cable
connectors.Replace if wire is defective.
7. Open diode D12B on Lift/Off/Drive switch S3. Check diode. Replace if defective.
8. Loose or broken wire #12A from Diode D12B to
Control Box connection #B1.
Check continuity. Replace if defective.
9. Loose or broken wire #12A from Mast function
cable #B1 to Drive Cutout Limit switch LS4.
Check continuity. Replace if defective.
10. Defective or out of adjustment Drive Cutout Limit
switch LS4.
Check limit switch. Replace if defective.
11. Loose or broken wire #07B from Drive Cutout
Limit switch LS4 to Mast function cable pin #C8/
C7/C6.
Check continuity. Replace if defective.
12. Loose or broken wire #07B in Mast function
cable or its connections.
Check continuity between Mast function cable pin
#C8/C7/C6 and Tilt switch TS1 connector P8 pin
#2. Check for loose or corroded connections on
cable connectors.Replace if wire is defective.
13. Defective Tilt switch TS1. Test Tilt switch. Replace if defective.
14. Open diode D17. Check diode. Replace if defective.
15. Defective Mast Position Relay 21CR1. Check relay. Replace if defective.
16. Loose or broken wire #71A from Mast Position
Relay 21CR1 to Pothole Limit switch LS2.
Check continuity. Replace if defective.
17. Defective or out of adjustment Pothole Limit
switch LS2.
Check limit switch. Replace if defective.
18. Loose or broken wire #72 from Pothole Limit
switch LS2 to Base terminal block.
Check continuity. Replace if defective.
19. Open diode D72. Check diode. Replace if defective.

Skyjack SJ16 Specifications

General

Gradeability	25%
Drive Motor	24V DC
Max Gradeability	25%
Platform Height	16 ft
Lift Capacity	500 lbs
Machine Width	0.76 m
Overall Width	0.76 m
Drive Speed (Stowed)	4.8 km/h
Drive Speed (Raised)	0.8 km/h
Turning Radius (Inside)	0 in
Power Source	24V DC Electric