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Фрагмент инструкции
Figure 2-12 Tractor Backed Away From Loader SECTION III OPERATING INSTRUCTIONS 3-1 GENERAL SAFETY Only qualified people familiar with this operator’s manual should operate this machine. Operator should wear hard hat, safety glasses, and safety shoes. The operator should read, understand and practice all safety messages shown on the caution, warning and danger decals affixed to the loader to avoid serious injury or death. It is recommended that tractor be equipped with Rollover Protective System (ROPS) and a seat belt be used. Check for ditches, stumps, holes or other obstacles that could upset tractor or damage loader. Always turn off tractor engine, set parking brake, and lower loader to ground before leaving tractor operator’s seat. 3-2 PRE-OPERATION IMPORTANT Do not extend bucket cylinders without quick hitch attachment installed on loader. Failure to follow these instructions could cause bucket cylinder damage and will void loader warranty. NOTE Check the tractor hydraulic fluid reservoir and fill, if required. 3-3 INITIAL LOADER OPERATION NOTE Keep engine speed at low idle during the initial loader operation. WARNING ESCAPING HYDRAULIC FLUID UNDER PRESSURE CAN HAVE SUFFICIENT FORCE TO PENETRATE SKIN, CAUSING SERIOUS PERSONAL INJURY. BEFORE APPLYING PRESSURE TO SYSTEM, BE SURE ALL CONNECTIONS ARE TIGHT AND THAT LINES, TUBES, AND HOSES ARE NOT DAMAGED. FLUID ESCAPING FROM A VERY SMALL HOLE CAN BE ALMOST INVISIBLE. USE A PIECE OF CARDBOARD OR WOOD, RATHER THAN HANDS, TO SEARCH FOR SUSPECTED LEAKS. IF INJURED BY ESCAPING FLUID, SEE A DOCTOR AT ONCE. SERIOUS INFECTION OR REACTION CAN DEVELOP IF PROPER MEDICAL TREATMENT IS NOT ADMINISTERED IMMEDIATELY. 13 3-4 EXTERNAL LOADER AND/OR TRACTOR VALVE. NOTE When properly installed, the tractor remote valve or external valve control lever/levers will controlthe loader hydraulic circuits as described below. Refer to tractor Operator’s Manual for furtherexplanation of tractor remote control lever/levers. IMPORTANT Contaminants in hydraulic fluid can cause valve spools to stick. BE ALERT when operating loader and follow your tractor Operator’s Manual hydraulic fluid maintenance schedule. 3-5 LOADER MOUNTED CONTROL VALVE EQUIPPED WITH SINGLE LEVER CONTROL HANDLE OR TRACTOR REMOTE VALVE EQUIPPED WITH SINGLE LEVER CONTROL HANDLE If your loader utilizes a loader control valve equipped with single lever control handle or tractor remote valve equipped with single lever control handle, it will function as shown in Figure 3-1. Figure 3-1 3-6 LOADER MOUNTED SERIES CONTROL VALVE EQUIPPED WITH SINGLE LEVER CONTROL HANDLE If your loader utilizes a loader mounted series control valve equipped with single lever control handle, it will function as shown in Figure 3-2. Figure 3-2 3-7 NEUTRAL POSITION The loader external valve provided by Bush Hog has a “neutral position” which prevents movement of the loader or attachment. When the control handle is manually released from the work position, the valve spool will return to the neutral position. 3-8 FLOAT POSITION The loader external valve provided by Bush Hog has a “float position” incorporated into the lift cylinder circuit which allows the loader to float. This float feature is important for satisfactory operation when scraping, sweeping, leveling, or any job where it is necessary to follow the contour of the surface. To activate the float position, lower the bucket or attachment and push the control handle all the way forward into detent. The valve will stay in float detent position until the operator manually pulls the control handle out of detent position to deactivate float. 3-9 REGENERATIVE VALVE POSITION When the handle is pushed all the way to the right, it will go past the dump detent position into the regenerative position. This position requires the operator to hold it in place. This feature enhances the performance and speed of the dump procedure. 3-10 LOAD SENSE LOADER VALVE IMPORTANT If your loader is equipped with a load sense type control valve it may demonstrate the following operation characteristic. Attempting to raise the boom by finely feathering the control lever may actually allow the boom to lower very slowly. To prevent this from happening, move the control lever far enough to ensure that the boom raises. 3-11 LOADER OPERATION Before operating the loader, fully raise and lower the boom three or four times. Then raise the loader bucket approximately four (4) feet above the ground and cycle the bucket two or three times. Lower the bucket or attachment to the ground. Check the tractor hydraulic fluid level and fill as required. Refer to the tractor Operator’s Manual for the proper hydraulic fluid and the correct hydraulic fluid level. 14 CAUTION BEFORE LEAVING THE TRACTOR SEAT, LOWER ATTACHMENT OR LOADER BOOM TO GROUND, STOP ENGINE, LOCK BRAKES, RELIEVE HYDRAULIC PRESSURE, AND REMOVE KEY. IMPORTANT Always keep the cylinders in a retracted position when the loader is not in use to guard against rust and contaminat...
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