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SERVICE MANUAL SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632 DC ELECTRIC SCISSORS 165978AK May 2 2023...
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This manual is for MEWPs with serial numbers: SJIII 3220: 60 004 189 to 60 999 999 SJIII 3226: 27 017 551 to 27 999 999 SJIII 46XX: 70 017 596 to 70 199 999 Please refer to the website (www.skyjack.com) for contact information, other serial numbers, the most recent technical manuals, animations, and USB software.
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It may also be used to alert against unsafe practices. IMPORTANT IMPORTANT indicates a procedure essential for safe operation and which, if not followed, may result in a malfunction or damage to the MEWP . SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632 165978AK...
All information in this manual should be read and understood before any attempt is made to service the machine. The updated copy of the manuals are found on the company’s website: www.skyjack.com. SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632 165978AK...
Any unit that is damaged or not operating properly during maintenance procedures. must be immediately tagged and removed from Preventive maintenance is the easiest and least service until proper repairs are completed. expensive type of maintenance. 165978AK SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632...
Skyjack railings are designed for modular replacement, and Skyjack recommends replacement of any damaged railing section. Skyjack-approved replacement parts will meet this requirement. SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632 165978AK...
The use of cloth to strain the oil should be avoided to prevent lint from getting into the system. 165978AK SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632...
Pass power disconnect switch to the “OFF” position. Fail ▪ Repair any damaged or malfunction Repaired components before operating MEWP . ▪ Not applicable Keep records on all inspections. SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632 165978AK...
Do not use the aerial platform if an inspection has not been recorded in the last 13 months. Description Label Pictorial Description Label Pictorial Inspector Inspection Date Signature 165978AK SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632...
Ensure there are no loose or missing parts and there is no visible damage. Wheel Motor Assembly ▪ Check for loose or missing parts and signs of visible damage. SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632 165978AK...
1. Check battery case for damage. 2. Clean battery terminals and cable ends thoroughly with a terminal cleaning tool or wire brush. 3. Ensure all battery connections are tight. 165978AK SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632...
— they must be ▪ Check each wheel for damage and cracked replaced. welds. ▪ Section 5 – Procedures for procedures. ▪ For proper torque information, refer to Torque Specifications SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632 165978AK...
Ensure there are no loose or missing parts and visible damage. there is no visible damage. Electrical Panel ▪ Ensure panel is properly secured and there is no visible damage. 165978AK SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632...
▪ Ensure all switches and controller are returned to neutral and are properly secured. ▪ Ensure there are no loose or missing parts and there is no visible damage. SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632 165978AK...
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If any of the above conditions are not met, immediately tag and lock the MEWP and remove it from service for repair. ▪ Refer to 5.3-2 Platform Mounting Hardware the maintenance/installation procedure. 165978AK SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632...
▪ Ensure rollers’ path of travel are free from dirt 3. Swing up maintenance support into storage and obstructions. bracket. 4. Fully lower the platform. SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632 165978AK...
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Contact Skyjack Service for direction on how to repair the unit. No rust. Pin has not rotated. Area is clean of dust/metal shavings 165978AK SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632...
Center pin pivot - Inner Provided there is no structural damage to the scissor arms, the pins and bushings can be replaced with new components. SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632 165978AK...
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Bearing block degradation Broken, missing, or Cracks in weld or loose retainers or bolts surrounding metal, rust in the area Note: weld intentionally not located at bolt area 165978AK SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632...
Found there will be detailed instructions for which tests to perform, as well as how to properly and successfully perform them. SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632 165978AK...
*Weight with standard 0.9 m extension platform. 1672AA (Refer to nameplate for aerial platforms with 1.5 m or 1.8m extension platform.) NOTE Emission sound pressure level does not exceed 70 dB(A). 165978AK SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632...
4827 3606 NOTE: Lubed includes lubricants such as lubrizing, oil, grease, and some uncured thread lockers. Refer to the specific 1374AB thread locker manufacturer’s instructions for specific torque adjustments. SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632 165978AK...
3659 2744 NOTE: Lubed includes lubricants such as lubrizing, oil, grease, and some uncured thread lockers. 1375AC Refer to the specific thread locker manufacturer’s instructions for specific torque adjustments. 165978AK SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632...
NOTE The LCP or OUP that an individual surface can withstand varies from structure to structure and is generally determined by the engineer or architect for that particular structure. 165978AK SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632...
Failure to operate with matched, approved tires in good condition can result in death or serious injury. Replace tires with the exact, Skyjack-approved types only. SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632 165978AK...
This aerial platform is equipped with a load sensing system. Do not exceed the rated capacity of the aerial platform. Failure to avoid this will prevent operation of all normal controls/functions of the aerial platform. To resume normal operation remove the additional loads. 165978AK SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632...
TWO POSITION FOUR WAY FOUR WAY TWO WAY THREE WAY VALVE CLOSED CENTER PROPORTIONAL NORMALLY CLOSED PORT OPEN VALVE PRESSURE PILOT LINES Dashed MAIN LINES Solid TRANSDUCER SERVO MOTOR/BRAKE SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632 165978AK...
This table is to be used as a wire number/color reference for all electrical drawings and schematics. All wire num- bers will retain their origional color coding, for example if wire 7 is red, wire 7A, 7B, and 7C will also be red. 165978AK SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632...
NEC Colours IEC Colours Protective Ground/Protective Earth Green Green-Yellow Neutral White Blue Line, Single Phase Black Black/Brown/Grey 1659AA Note: Standard colours referenced from IEC 60445:2010, Annex A:Table A. 1 SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632 165978AK...
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(For model 46xx with serial number 70032133 & Below) 199459 LIMIT SWITCH, Pothole protection (Hydraulic tray) (For model 3220 with serial number 60007078 & Above) (For model 3226 with serial number 27032455 & Above) SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632 165978AK...
RED BLACK (18) (13) ORANGE (15) BLUE WHITE BLACK (16) (NOT USED) (02) WHITE BACK VIEW TO PWR DECK CONTROL BOX 1.BLACK (27) 2.WHITE (09) 3.GREEN (26) 4.RED (9A) M164704AD SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632 165978AK...
2 WHITE (08) 3 GREEN (26) 4 (N/U) TO POWER CONTROL CONSOLE BACK VIEW EXTENSION PLATFORM CYLINDER HARNESS MALE 1 BLACK (27) 2 WHITE (02) 3 GREEN (26) 4 (N/U) M115592AI1_S3 165978AK SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632...
BLUE WHITE (8C) (24) BLUE BLACK RED (07) (OPT) GREEN BLACK (59) ORANGE BLACK BLACK (14) ORANGE (13) (18) RED BLACK (16) WHITE BLACK BLUE (15) (NOT USED) WHITE (02) M163170AA SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632 165978AK...
PIN 1 - 13 BLACK PIN 2 - 02 WHITE HORN HARNESS TO HORN 02 - WHITE 49 - BLACK TO ELECTRIC PANEL 02 - WHITE 49 - BLACK M129171AA2 165978AK SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632...
“probable cause.” The information in the right-hand column, in bold text, represents the “remedy” to the “probable cause” directly beside it. See the example below for clarification. 1. Probable cause Remedy SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632 165978AK...
Check motor controller input and output voltage. Replace 12. Defective motor controller. if defective. Check motor for operation with 24 volt supply. Replace if 13. Defective motor DCM1. defective. SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632 165978AK...
Check resistor and make sure it is secure. Replace if 18. Defective base lift resistor RST6. defective. 19. Loose or broken jumper wire #59H at base Check continuity. Replace if defective. terminal block. 165978AK SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632...
11. Loose or broken wire #02 from holding valve coil Check continuity. Replace if defective. 2H-13C-1 or 2H-13C-2 (if equipped) or down valve coil 2H-13C to base terminal block. SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632 165978AK...
Check continuity. Replace if defective. S7-3 to base terminal block. 3. Loose or broken wire #24 from base terminal Check continuity. Replace if defective. block to steer left valve coil 4H-24. SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632 165978AK...
11. Loose or broken wire #19C from diode D26 to base Check continuity. Replace if defective. terminal block. Check diode. Replace if defective. 12. Open diode D19C or D19C-1. SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632 165978AK...
11. Loose or broken wire #19C from diode D27 to base Check continuity. Replace if defective. terminal block. Check diode. Replace if defective. 12. Open diode D19C or D19C-1. 165978AK SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632...
” off position. After completing any procedure which involves modifying, adjusting, or replacing any hydraulic or electrical components, perform all of the function tests given in your unit’s Operating Manual. SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632 165978AK...
6. Remove the gauge from lift pressure test port. port. NOTE Pressure setting may vary as aerial platform components wear. The lift pressure should be set for rated load only. 165978AK SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632...
* 4.8 volts refers to full stroke on the joystick. 24 volts represents a full charge on the battery pack. ** Values given are with all connections tight and free from corrosion + or - 10%. SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632 165978AK...
17. Reinstall any covers that was removed. 11. Pull out emergency stop button and turn 18. Remove chock or wheel blocks. main disconnect switch to ON position. 19. Proceed to Test and Verify Tilt Circuit. 165978AK SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632...
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Both LEDs will flash. 13. Reinstall any covers that was removed. 14. Remove chock or wheel blocks. Red LED Green LED 15. Proceed to Test and Verify Tilt Circuit. SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632 165978AK...
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On together, no blinking when Green & Red LED fault detected. Tilt Circuit Test 1. Refer to section 2 for test tilt sensor procedure. 165978AK SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632...
7 feet (2 meters) or until the pothole protection is activated. Attempt to drive forward or reverse. Aerial platform should not move forward or backward. 165978AK SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632...
NOTE The inner bearing has a larger diameter than the outer bearing. When installing, ensure the bearings are inserted tapered-end first. SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632 165978AK...
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4. Use a hub puller to remove and discard the hub/ integrated hub wheel from the spindle. 5. For integrated hub wheels, use two 3/8”-24 bolts with a hub puller to remove the wheel. Remove Integrated Hub Wheel 165978AK SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632...
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Do not lower the machine while the pin brakes are disengaged. 8. Turn the castle nut back slightly until the next cotter pin hole is visible on the spindle. SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632 165978AK...
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5. Ensure the cotter pin is pushed in completely. Hub Install 6. Bend the ends of the cotter pin to secure the castle nut. Integrated Hub Wheel Install Hub Install Integrated Hub Install 165978AK SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632...
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5. Ensure the cotter pin is pushed in completely. Hub Install 6. Bend the ends of the cotter pin to secure the castle nut. Integrated Hub Wheel Install Hub Install Integrated Hub Wheel Install SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632 165978AK...
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If possible, drive the machine prior to checking torques. 7. Apply dots of torque seal at the base of the wheel bolts. 8. Check torque values after 8 hours of operation. 165978AK SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632...
6. Install any 45° and 90° hydraulic hose ends first, then align direction and tighten. Adjust the swivel nut on the straight hose end before tightening to create the desired flow. 165978AK SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632...
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Dash Frac. (in.) 37° Tube Nut Swivel Nut 1/4'' 7. Apply a drop of torque seal to the connection. 5/16'' 3/8'' 1/2'' 1.25 5/8'' 3/4'' 1.25 1 1/4'' 1 1/2'' 1649AA SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632 165978AK...
F-0-0-4 current offset. The voltage drop across the DC relay is too high F-0-0-5 while the relay is closed. Large difference between internal DC-DC and F-0-0-6 battery sense currents. 165978AK SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632...
Extra loads. Turn off other devices running on the battery ▪ This error automatically clears once the charger is reset by cycling ▪ DC or by loss of AC for over 10 minutes. SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632 165978AK...
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Disconnect and reconnect the batteries a few times. ▪ Check the battery voltage and cable connections. ▪ This error automatically clears once the condition has been corrected. 165978AK SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632...
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30 seconds and retry. has triggered an alarm ▪ If the problem persists, contact Delta-Q Technologies. ▪ This error automatically clears once the condition has been corrected. SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632 165978AK...
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This error automatically clears once the condition has been corrected ▪ A battery or some other source has been connected to E-0-4-7 Platform overvoltage alarm the charger that exceeds the hardware’s design limits. 165978AK SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632...
4. Adjust the tension on both hinges until the gate releases and latches from a half open position. 5. Reinstall the safety locking screws into the hinges when tension adjustment is complete. 165978AK SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632...
Use a smooth, even motion until an indication (audible click) is heard and felt. 5. When all of the bolts are torqued, repeat the tightening sequence to confirm the torque. SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632 165978AK...
5. Remove the limit switches and free the limit switch cable(s) by cutting the tie wraps. 6. Follow the cable into the plug and disconnect it from the rear harness. Discard the limit switches. 165978AK SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632...
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6. Loosen the set screws (x2) on the Drive Override limit switch cam, and rotate the cam until depresses the limit switch plunger and a click is heard inside the limit switch. 7. Fully lower the platform. SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632 165978AK...
Use these to move back and forth between menus and submenus and to make a selection. Up/Down Adjust the settings values. Left/Right Select the menus and settings to be adjusted. 165978AK SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632...
10. If at any time it is not possible to perform the required operation, go to step 15. 11. Select the Diagnostics>System>Height menu. SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632 165978AK...
Output To 28CR1 Tilt Relay And 28CR2 Down Relay 02 White Negative for Flashing Light and Beeper 28E Green/White Output To 28ECR1 Aux. Tilt Relay And 28ECR2 Aux. Down Relay 165978AK SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632...
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Not Used 910 Black Positive Signal To Angle Transducer 900 White Negative Signal To Pressure Transducer 902 White Negative Signal To Angle Transducer 910A Black Positive Signal To Pressure Transducer SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632 165978AK...
Check that the battery voltage is not too low. Verify battery voltage on P2-12. Disconnect plug P4 – if the fault clears there is a wiring fault from P4-1 to the rest of the vehicle. SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632 165978AK...
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Action a function to clear the idle timeout if it occurred. Ensure the GP102 is correctly mounted – incorrect mounting can cause the “bad tilt sensor” diagnostic to occur. Otherwise there may be an internal problem with the GP102. 165978AK SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632...
0.9V and 4.1V. Code F11: Not Up Select the UP function only. This message occurs at the start of calibration if the operator selects a function other than UP . SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632 165978AK...
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(P4-3) during calibration. output. A reading of 0V or 5V is probably due to a wiring problem. The height sensor output must be between 1.0V and 4.0V at all times. 165978AK SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632...
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Press ENTER to confirm when the platform is fully lowered. Platform Empty? This message is prompting for confirmation that the platform is completely empty. Press ENTER to confirm if the platform is empty. SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632 165978AK...
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Press UP & DOWN to change the flashing digits. Press ENTER when the entry is complete. IMPORTANT: The date 00/00/00 is not allowed! Finished This message confirms that calibration is complete and successful. 165978AK SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632...
#14) Contactor Main Manifold JUMPER, Insulated Alligator Clip Coil Black wire #14 Wire #19B Lift Valve 7. Connect the Easy-Cal tool to the P1 connector on the CONTROL MODULE. SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632 165978AK...
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24. By using the Up/Down buttons, enter the “Yes” followed by pressing the ENTER button. 25. The display will show “Calibrate Load: Please Lift..”. ▪ Waiting for the lift switch to be activated. 165978AK SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632...
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If the phase does not need to be repeated, just press ENTER to move on. If the phase does need to be repeated, press UP or DOWN to change “NO” to “YES” then press ENTER. SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632 165978AK...
12V Input From LS1 High Speed Limit Switch To Verify ON/OFF Limits 02 White 0V GND (-) Negative Reference From Base Terminal Strip 10A Blue/Black 12V Main Power Input thru Main Power Relay 10BCR From Base Terminal Strip SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632 165978AK...
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12V Output for Outrigger Right Front Up signal to 4H-72 Solenoid 71 Orange 12V Output for Outrigger Left Front Up signal to 4H-71 Solenoid 35C White/Black 12V Output for Outrigger Enable signal from Enable switch S9A or Relay 9CR3 165978AK SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632...
ENTER Refer to 3.5-6 5.7-6. SETUPS: SETUPS: ENTER CHANGE DEFAULTS TILT SETUPS TILT SETUPS: CALIBRATE LEVEL: YES:ENTER, NO:ESC ENTER ENTER CALIBRATE LEVEL YES:ENTER, NO:ESC TILT 0.0’ , 0.0’ ENTER 165978AK SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632...
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(mm/dd/yy) Enter the date. Push and pull the CALIBRATE LOAD: ENTER To the home screen. emergency stop button to FINISHED! cycle the power and save the settings. SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632 165978AK...
GP106 P2-8 SHORT TO SUPPLY! CHECK GP106 CONNECTIONS! GP106 P2-x SHORT TO SUPPLY? CHECK GP102 CONNECTIONS! GP106 P4-x SHORT TO SUPPLY? FACTORY OVERRIDE GP102 P3-4 SHORT TO SUPPLY? 2236AA 165978AK SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632...
EZcal Pro, press the enter key until it displays the required le. EZcal Pro MENU: XXXXXXX :YES ENTER PGFLASH WORKING Wait for the ash to nish. This could take several minutes. PGFLASH OK/VX.X FINSHED SJIII 3220, SJIII 3226, SJIII 4620, SJIII 4626, SJIII 4632 165978AK...
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