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HomeMy WebLinkAbout306.006 - Hi-Lift Jack TRAINING AND EQUIPMENT MANUAL RESCUE EQUIPMENT 306.006 HI-LIFT JACK EFFECTIVE: OCTOBER 2007 Current Revision Date: 7/26/19 Next Revision Date: 7/26/24 Author’s Name/Rank: Justin Moore Captain Review Level: 1 Administrative Support Leslie Oulashian Management Analyst II PURPOSE The purpose of this policy is to provide Fresno Fire Department (FFD or Department) members with guidelines for safe operation of the HI-Lift Jack (Jack). APPLICATION Contents of this policy apply to all members while operating the Jack during maintenance, training, or emergency operations. OPERATIONAL POLICY This section intentionally left blank. OPERATIONAL GUIDELINE This section intentionally left blank. PROCESS The Jack is a multifaceted tool, which can be used for lifting stable loads, clamping or spreading, raising vehicles or other mobile loads, and when properly stabilized, winching loads and stretching wire. The Jack is made from cast-steel metal and weighs 28.16 pounds. It has a height of 50.25 inches, a width of 5 inches and a depth of 9.63 inches. The rated maximum tested load is 7,000 pounds. When used as a clamping device, it is rated at 750 pounds; and when used as a winching device, it is rated at 5,000 pounds. Section 306.006 Page 1 of 8 The minimum lifting height at the point of the nose is 4.5 inches with a maximum lift height of 38.63 inches. The handle force required to raise 4,660 pounds is 177 pounds at 34 inches on the handle. If the Jack is overloaded during operation, the shear bolt, which is located in the lifting mechanism, will break. If the shear bolt breaks, as it will at approximately 7,000 pounds, the load should be supported but the Jack's handle will drop freely. The Jack must have a minimum load of 150 pounds or more on it to lower step by step; otherwise, the lifting mechanism will slide down to the base plate, "dropping" the load. 1. General safety precautions: Inspect the Jack for rust, damage, and badly worn or missing parts before each use. Check the climbing pins to ensure they are not rusted, worn, or damaged. Check the steel standard bar to make sure it is straight and the holes are not blocked. Check for cleanliness and lubrication as the Jack is not self- lubricating and it will not operate safely without the proper lubrication. The Jack should not be used to support a load independently. Securely chock and/or crib the load to be lifted making sure the load cannot slip, roll away or fall. Never operate under a suspended load supported with just a Jack. Caution should be used when manipulating the reversing latch. Always place the handle against the steel standard bar before moving the reversing latch into the lowering position. This will prevent the handle from uncontrollably moving up and down rapidly. Care should be exercised to remain clear of the handle’s travel path. During lowering, the weight of the load pushes up against the Jack’s handle. When manipulating the handle, the hands should be in a palm-down position to prevent slippage. Make sure everyone is clear of the load before lowering. Never push a raised load off the Jack. 2. Instructions for raising a stationary load: a. Chock one or more of the wheels for stabilization. b. Block the load utilizing blocks or stabilizers, which have a weight capacity greater than the weight of the load being lifted. Section 306.006 Page 2 of 8 c. Place the Jack’s base plate securely on a firm, level, and dry surface with the steel standard bar pointing straight up. d. Added stabilization can be added to prevent the Jack’s base plate from slipping. e. Lift the reversing latch until it locks in the up position. f. Grasp the handle or the handle socket and raise the lifting mechanism until the nose is completely and securely under the load as close to the lifting mechanism as possible. g. Grasp the handle firmly with both hands, palms facing down. (See Figure 1.) Figure 1 h. Carefully pump the handle up and down to raise the load; the load will be raised on each down stroke of the handle. i. A series of clicks will be heard as the lifting mechanism moves up the steel standard bar. j. Watch the load and the Jack carefully; stop jacking if either one starts to move. k. Do not continue raising the load unless it is safe to do so. l. When the load is raised to the desired height, place the handle in the upright position against the steel-standard bar. m. Block the load securely and lower the load onto the blocking. Note: Caution should be exercised when using the Jack on curved or tubular vehicle bumpers. Do not use an extension on the handle for more leverage. Section 306.006 Page 3 of 8 3. Instructions for lowering a stationary load: a. With the handle in the upright position, ensure the reversing latch is locked in the up position. (See Figure 2.) Figure 2 b. Grasp the handle firmly with both hands, palms facing down. c. Carefully pump the handle up and down to raise the load; the load will be raised on each down stroke of the handle. d. Raise the load enough to relieve the blocking. e. Remove what blocking was added. f. Place the handle in the upright position against the steel- standard bar. g. Move the reversing latch to the down position forcefully. h. Again grasp the handle firmly with both hands, palms facing down. i. Carefully pump the handle up and down to lower the load; the load will be lowered on each up stroke of the handle. Note: Watch the load and the Jack carefully; stop jacking if either one starts to move. Do not continue lowering the load unless it is safe to do so. The Jack must have a minimum load of 150 pounds or more on it to Section 306.006 Page 4 of 8 lower step-by step; watch for the lifting mechanism to slide down to the base plate when no longer loaded. 4. Instructions for winching: The Jack can be utilized as a winch, if needed, for rescue operations. Keep in mind the ability to move the load will be based on the maximum working limitations of the Jack. (See Figure 3.) The working load of each chain must be greater than the strength of the Jack. If a chain breaks while winching, the load could shift or the chain could snap back. Figure 3 a. Make sure the top clamp is in line with the bar. b. Install one end of a chain securely to the object to be winched. c. Securely attach the other end of the chain to the top clamp of the Jack. d. Use a shackle if the chain will not fit through the top clamp of the Jack. e. Take another chain and secure one end to a fixed, stable object. f. Secure the other end around the lifting nose on the Jack. Note: Do not attach the chain or shackle to the bottom hole of the lifting nose. Section 306.006 Page 5 of 8 g. Operate the Jack as you would for raising or lowering a load. 5. Instructions for clamping: (See Figure 4.) Figure 4 a. Loosen the top clamp bolt. b. Turn the top clamp 90 degrees to the steel bar and retighten the bolt. c. The top clamp can be connected anywhere along the steel- standard bar. d. Operate the Jack as you would for raising a load. 6. Cleaning and lubricating the Jack: If the moving parts of the Jack or the steel standard bar are clogged, use air pressure, water pressure, or a stiff brush to clean. Use a non- flammable cleaning solvent or another good degreaser to clean the Jack. Remove any existing rust, preferably with a penetrating lubricant. Do not use motor oil or grease to lubricate the Jack. Lubricate the Jack using white lithium grease, light penetrating oil, or a silicon or Teflon spray at the following points: (See Figure 5.) Section 306.006 Page 6 of 8 Figure 5 a. Keep the front and back edges of the steel-standard bar lightly lubricated and free from dirt and rust. b. Keep the pitman pin lubricated or it will damage the handle socket and pitman. c. Keep the shear bolt clean and lubricated to keep it from wearing out. d. Keep both climbing pins and springs lubricated and free from dirt and rust. 7. If the Jack binds: Dirt, rusty, climbing pins or a worn or bent steel-standard bar can cause binding. As the Jack becomes older, the climbing pins may start binding in the holes of the steel-standard bar. This will prevent the Jack from operating properly and safely. Regularly cleaning and lubricating the lifting mechanism may prevent some binding. Test the Jack by jacking it down without a load. If the binding continues, indicate the problem on an FD-37 and route the Jack to the Repair and Maintenance Section for repair. If the Jack binds while under a load, use another Jack with an equal or larger load capacity to lower. Section 306.006 Page 7 of 8 INFORMATION This section intentionally left blank. DEFINITIONS This section intentionally left blank. CROSS REFERENCES No cross-references recognized. Section 306.006 Page 8 of 8