Skyjack SJ12 Service Manual

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213558ADA
SJ12, SJ16
Section 4 – Troubleshooting Information Electrical System Troubleshooting
4. Loose or broken wire #21 from base terminal
block to high speed relay 21CR.
Check continuity. Replace if defective.
5. Defective high speed relay 21CR. Check relay, replace if defective.
6. Loose or broken wire #02 from base terminal
block to high speed relay 21CR.
Check continuity. Replace if defective.
7. Loose or broken wire #59K from high Speed
Relay 21CR to Base terminal block.
Check continuity. Replace if defective.
8. Defective elevated Drive Resistor RST8. Check resistor and make sure it is secure. Replace
if defective.
4.2-19 Forward Drive Function Inoperative
1. Loose or broken wire #16 from Lift/Off/Drive
switch S3 to Platform connector X1 pin #A10.
Check continuity. Replace if defective.
2. Loose or broken wire #16 in Mast control cable
or its connections.
Check continuity between Mast function cable
connector P2 pin #4 and Platform connector X1
pin #A10 on cable. Check for loose or corroded
connections on cable connectors.Replace if wire is
defective.
3. Loose or broken wire #16 from Mast function
cable to Forward Cutout Relay 16BCR.
Check continuity. Replace if defective.
4. Defective Tilt switch TS1. Test Tilt switch. Replace if defective.
5. Loose or broken wire #16B from Tilt switch TS1
to Forward Cutout Relay 16BCR.
Check continuity. Replace if defective.
6. Loose or broken wire #02 from Forward Cutout
Relay 16BCR to Base terminal block.
Check continuity. Replace if defective.
7. Defective Forward Cutout Relay 16BCR. Check relay. Replace if defective.
8. Loose or broken wire #16A from Forward Cutout
Relay 16BCR to Base terminal block.
Check continuity. Replace if defective.
9. Loose or broken wire #16A from Base terminal
block to Forward Valve coil 4H-16A.
Check continuity. Replace if defective.
10. Loose or broken wire #02 from Base terminal
block to Forward Valve coil 4H-16A.
Check continuity. Replace if defective.
11. Defective Forward Valve coil 4H-16A. Check continuity. Replace if defective.

Skyjack SJ12 Specifications

General

Gradeability	25%
Drive Motor	24V DC
Machine Width	32 in (0.81 m)
Stowed Height	6.5 ft
Overall Width	32 in (0.81 m)
Stowed Height (Rails Folded)	6.5 ft
Drive Speed (Elevated)	0.5 mph (0.8 km/h)
Power Source	Electric