Assessments - 4, GPA: 4.3
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Secure hydraulic hoses to tractor to prevent interference. It is recommended that hoses be rout- ed under tractor operator’s platform. K. Extend and retract both sets of cylinders beginning with short strokes. Gradually increase the length of stroke until cylinders “bottom out” in each direction. Hold valve open with cylinders “bottomed out” for 3-5 seconds. This will purge air from hydraulic components. NOTE When valve control is held open, a squealing noise will be heard when cylinders ”bottom out” and hydraulic oil passes through relief valve. This may cause overheating if valve control is held open longer than 5 seconds. Make certain optional control valve operates as shown on decal . If valve operation is incorrect, see plumbing diagrams for correct connections. CAUTION AIR IN HYDRAULIC COMPONENTS WILL CAUSE ERRATIC LOADER OPERATION. PURGE AIR FROM SYSTEM AS DESCRIBED ABOVE BEFORE WORKING WITH LOADER. FAIULURE TO DO SO CAN RESULT IN PERSONAL INJURY AND EQUIPMENT DAMAGE. 2-3 DISMOUNTING LOADER Dismount loader on firm, level ground to facilitate the next mounting. It is recommended that loader be stored in a dry place to prevent rusting. A. Observe the position of boom cylinder mount- ing bushing in relation to the subframe. (Figure 2-6) Remember this position to aid in aligning cross tube with front bracket when loader is being mounted to tractor. B. Remove parking stands from storage. Raise boom and install as shown in Figure 2-7. Figure 2-7 Parking Stands Installed 12 C. Lower boom until parking stands contact ground. D. Extend bucket cylinders until cutting edge of bucket is frimly on the ground. E. Remove pin from mounting bracket. Pin Figure 2-8 Mounting Bracket F. Loosen nut securing cuffs to loader subframe. Remove pin securing cuff. Remove cuff. (Figure 2-4) WARNING USE CAUTION WHEN DISMOUNTING LOADERS EQUIPPED WITH OPTIONAL CONTROL VALVE ON TRACTORS EQUIPPED WITH CANOPY. RAISING LOADER SUBFRAME TOO HIGH CAN PINCH HAND BETWEEN CONTROL HAN- DLE AND CANOPY CAUSING INJURY. G. With tractor at idle speed, roll bucket back until subframe raises up off rear bracket. H. With tractor at idle speed, carefully activate boom cylinder until cross tube is free of pressure within front bracket channel. It may be necessary to roll bucket back further to maintain sufficient clear- ance between subframe and rear cross tube. I. Disconnect hydraulic hoses from tractor quick disconnect couplers. J. Carefully back tractor out of loader. NOTE When dismounting the 2427 QT from certain tractor models, additional subframe height is required to clear the front axle. This may be done by rotating the subframe back by extending the boom cylinders once the cross tube is free of the front channel. K. Reinstall cuffs to loader subframe and place pin in front mounting bracket for storage. L. Clean all dirt and debris from loader. Dirt will hold moisture and cause rust. M. If loader is to be stored for an extended period of time, perform lubrication per paragraph 4-2. Also apply coat of heavy grease to exposed cylinder rods to prevent rusting. 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 OPERATION The loader should be operated with the tractor engine running at 1200-1700 rpm. Excessive speeds are dangerous and may cause bucket spillage and unnecessary strain on both the trac- tor and loader. When operating in temperatures below 30°F (-1°C.), run the tractor engine below 1200 rpm until the oil temperature exceeds 30°F. A bucket level, indicator rod (Figure 3-1) located on the loader frame can be used to determine bucket angle. Before beginning work, observe the position of indicator rod with bucket flat on ground. Raise boom to several different positions. At each positionlevel bucket, then observe the indicator rod. Once familiar with the indicator rod positions, operation ofloader will be easier and more efficient. The following text and illustrations offer suggested loader and tractor operating techniques. Figure 3-1 Level Indicator Rod 13 FILLING THE BUCKETApproach and enter the pile with a level bucket. Loaderswith1-levercontrol,easeleverbackandtoward you to lift and rollback the bucket. Loaders with2-lever controls, ease both levers backto lift and rollback the bucket. The lift and rollback ofthebucket will increase effi- ciency because... ...a level bucket throughout the lifti...
Este manual também é adequado para os modelos :Carregadores - 2427 (1.37 mb)
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