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Hersteller: Bush Hog Dateigröße: 4.9 mb Dateiname: Unterrichtssprache:

5. During operation, listen for abnormal sounds which might indicate loose parts or other damage. AFTER EACH USE 1. Clean all debris from machine, especially cylinder rods and affixed safety decals. Replace any missing or illegible decals. 2. Inspect loader for worn or damaged components. Repair or replace before next use. Any replace- ment components installed during repair shall include the components’ current safety decals specified by the manufacturer to be affixed to the component. 3. Store loader in a dry place. To keep mounting kit hardware from loosening during operation, periodically check that all loader mounting kit hardware is torqued to specifications noted in torque chart, Page 33. To aid in mounting and dismounting loader, apply a small amount of grease to areas shown in Figure 4-1. THE LOADER CAN FALL FROM HYDRAULIC SYSTEM FAILURE. TO AVOID SERIOUS INJURY OR DEATH, SECURELY SUPPORT LOADER BEFORE WORKING UNDERNEATH. BEFORE EACH USE 1. Pivot Pins -Apply multi-purpose grease to each fitting. 2. Hydraulic Oil - Cycle boom and bucket cylinders 2 or 3 times before each use, then check hydraulic oil level in tractor reservoir. USE A PIECE OF CARDBOARD OR WOOD RATHER THAN HANDS AND WEAR EYE PROTECTION WHEN SEARCHING FOR HYDRAULIC LEAKS. ESCAPING HYDRAULIC OIL UNDER PRESSURE CAN PENETRATE SKIN. IF OIL IS INJECTED INTO SKIN, IT MUST BE SURGICALLY REMOVED WITHIN A FEW HOURS BY A DOCTOR OR GANGRENE MAY RESULT. WARNING CAUTION 4-2 LUBRICATION (Figure 4-2) NOTE The multi-purpose grease referenced in this section is an NLGI grade 2 type grease. Apply Small Amount Of Grease Figure 4-1 Mounting Kit Check Torque On All Mounting Hardware CAUTION 4-2 LUBRICATION (Figure 4-2) NOTE The multi-purpose grease referenced in this section is an NLGI grade 2 type grease. Apply Small Amount Of Grease Figure 4-1 Mounting Kit Check Torque On All Mounting Hardware 23 Figure 4-2 Lubrication Points . . . . 4-3 HYDRAULIC SYSTEM PRESSURE REQUIREMENTS A tractor hydraulic system pressure setting of 2500 psi is recommended for maximum efficiency and service. Do not exceed 3000 psi as this will damage components possibly causing serious injury. The Bush Hog control valve is pre-set at the factory and should not be adjusted. 4-4 TROUBLESHOOTING Troubleshooting procedures are listed in Table 4-1. If the problem cannot be solved or replacement parts are necessary, contact your authorized Bush Hog dealer. Please have ready your machine name, model number, serial number, purchase date and exact cause or description of problem. 24 TABLE 4-1 TROUBLESHOOTING PROCEDURES PROBLEM POSSIBLE CAUSE REMEDY Loader slow and/or will not dump. Hydraulic oil viscosity too heavy. Oil filter plugged. Hydraulic pump worn. Oil line restricted or leaking. Quick couplers not properly connected. Control valve does not shift properly. Air in hydraulic system. Cylinder leaks internally. Faulty valve. Change to proper oil. Clean or replace filter. Repair or replace pump. Check all hoses and tubes for leaks, damage or restrictions. Replace damaged or restricted hoses or tube lines. Check connection - Replace if necessary. Inspect clean, repair or replace valve. Cycle lift cylinders and bucket cylinders several times to free system of air. Replace seals. Repair or replace valve. Loader chatters or vibrates when raising or lowering. Air in hydraulic system. Oil level too low. Cycle lift cylinders and bucket cylinders. Add oil as required. Oil leaks. Damaged fittings or hoses. Loose connections. Worn or damaged O-ring or wiper seal in cylinder rod end. Worn or damaged O-rings in valve. Replace damaged parts. Tighten fittings. Install a seal repair kit. Install an O-ring repair kit. Insufficient lift capacity. Load is greater than boom lift capacity. Internal boom cylinder leakage. Improper hydraulic valve operation. Check loader specifications. Check tractor system. Replace any worn parts and install a seal repair kit. Repair or replace valve. Slow leakdown. Worn control valve. Worn cylinder piston seals. Have authorized Bush Hog dealer replace seals. Have authorized Bush Hog dealer replace seals. Excessive wear on bottom of bucket and wear pads. Float position not used while operating loader. Use float position provided on valve. Hydraulic cylinders inoperative. Hose from control valve improperly connected. Refer to plumbing diagrams in Section V. Pump operating continually on closed center tractor hydraulic system. Hydraulic control valve relief stuck open. Hydraulic control valve relief set too low. Valve not correct for closed center operation See your tractor manual for proper adjustment or Bush Hog dealer for loader valve. (3000 PSI is maximum pressure relief setting recommended) Install closed center plug on optional valve. Loader lift and bucket tilt controls do not work according to decal. Hoses improperly connected. Refer to plumbing diagrams in Section V and correct hose connections. Valve noisy and/or hot. Open center control valve on closed center tract...

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