Tech Tips

It is important to ensure that when performing maintenance or a repair procedure, any hoses or electrical cables that may have been replaced or moved be returned to their original positions. As the equipment is operated, the hoses and cables flex and bend, and without proper support, this action causes a straining and pulling tension on them. The use of support clamps, cable ties, along with using the correct fittings and correct hose and cable lengths minimizes or eliminates this tension to help ensure a long life.

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The Skyjack Vertical Mast models SJ12 and SJ16 feature a traversing platform that allows the operator to extend the platform when elevated and safely reach a larger area without repositioning the machine. The platform can also be fully extended into the service position which provides a means of access to the hydraulic/electric compartment in the base to allow a technician to service the unit.

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An often overlooked spot on the Skyjack electric powered scissor lifts is the A.C. interlock connection. It is located at the rear of the battery charger and is labeled as AC Interlock. If the label is missing, look for two 14 GA. wires (one black/one white) leading to a white connector.

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On the rare occasion that a Skyjack product has a problem, the service technician may need information to help troubleshoot and repair the machine. Just call Skyjack Product Support at 1-800-275-9522, and follow the prompts to get to technical support. Skyjack employs field experienced technicians that are able to answer questions and assist with any issue that you may have regarding your Skyjack product.

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When troubleshooting any problem, it is essential that you know how the function works in order to be able to fix it. Outrigger inspection procedures can be found in the applicable operating manual for the serial number of the unit you are working on, as well as the Service Advisory dated September 1, 2010.

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The Skyjack SJIII Compact and Conventional model electric scissor lifts with the MC option and all of the SJ12/SJ16 Vertical Mast models utilize a motor controller to control the function speeds.

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Skyjack products are designed and tested to ensure correct operation and reliability. In spite of our best efforts, there are occasions when a modification must be made to a piece of equipment after it has been delivered to a customer and placed in service. Service Bulletins are used to communicate required modifications to machinery that is in the field. The scope of Service Bulletins may range from the simple addition of a label to an inspection or a more involved electrical, hydraulic, or structural modification.

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Technicians are asked to perform a variety of tasks on a wide range of equipment. Whether it is a simple repair at a wire connection or a major component overhaul, two of the essentials needed to successfully accomplish the job at hand are proper tools and correct information. The technician’s goal is to correctly diagnose and repair the problem in the least amount of time. Technicians invest to ensure that they have a tool box with all the necessary tools to complete any job safely and correctly. Wrenches, socket sets, screwdrivers, and volt meters - the list goes on.

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You may have seen the optional ‘positive air shutoff valve’ for diesel engine equipped machines on one of your Skyjack models. This valve is a device that cuts the air supply to the engine to ensure the engine RPM’s do not over speed when it is being operated in a fuel charged atmosphere (some models also cut the power to the fuel pump). There are work site situations, such as mining, where the atmosphere can possibly contain natural gas, leaking propane, or other gases that a diesel engine can use as fuel.

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This month we have 3 small items that are important to remember when troubleshooting your Skyjack Aerial Work Platform. 1. When testing electrical circuits on Skyjack aerial equipment... 2. When working on any Skyjack scissor lift, the serial number plate is a source of valuable information.... 3. When you are troubleshooting a problem on any equipment, it is always best to test ALL functions before trying to determine the exact problem....

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