Assessments - 2, GPA: 4
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Facilidade de uso
BEFORE EACH USE 1. Driveline Universal Joints -Apply multi-purpose grease with grease gun. 2. Driveline Guard -Apply 2-3 shots of multi- purpose grease with grease gun to plastic fitting. 3. Driveline -Disconnect PTO driveline, pull the two sections apart, apply thin coat of multi-purpose grease to inside of outer (female) section. Reassemble sections and install. Pull each sec- tion to be sure driveline and shields are securely connected. Make certain PTO shielding is in good condition. 4. Rotor Shaft Bearing -Apply 2-3 shots of multi- purpose grease with hand pump grease gun before each operation and before storage. (Figure 4-1) 50 HOURS 5. Input Gearbox -Add EP80W-90 gear oil, if necessary, to bring oil to correct level on dip stick. 6. Chain Drive -Add EP80W-90 gear oil, if necessary, to bring oil level to checkplug located on side of cover. (1) Before Each use (Both Ends) (2) Before Each Use (Both Ends) (3) Before Each Use NOTE: In some instances, sliding the yoke shield back will make lubrication, inspection and cleaning of the universal joints more convenient. Proceed as follows: 1. Using a flat blade screwdriver, rotate the fasten-4. Remove the cones from the half-joint. (Figure 4-5) ing pin in its seat 1/2 turn until the head of the pin becomes unlocked in its housing on the cones. (Figure 4-2) Figure 4-2 Figure 4-5 5. Remove the connecting ring from its housing on 2. Lever up the pin through the slot, until the pin the yoke and, at the same time, from the slots of the comes out. (Figure 4-3) guard tube, then move away the ring and the tube. (Figure4-6) Figure 4-3Figure 4-6 3. Rotate the soft cone until the slots are aligned Reassembly is in the reverse order with the corresponding ones of the rigid cone. (Figure 4-4) Figure 4-4 11 4-3 BLADE REPLACEMENT WARNING THE TILLER CAN FALL FROM HYDRAULIC SYSTEM FAILURE. TO AVOID SERIOUS INJURY OR DEATH, SECURELY SUPPORT TILLER BEFORE WORKING UNDERNEATH. Tiller blades should be replaced when they have approximately 1/4” of wear left on tip of blade.(Figure 4-7) To replace blades, remove bolts securing blade. Install new blade in its place. Blade must be a right or left corresponding to the blade removed. Pay spe- cial attention to the bolts on the blades; the bolt head must be placed on the blade side, with the washer and the nut on the flange side so that the bolts can- not loosen while the equipment is being used. When several blades must be replaced, replace one blade at a time, so that the initial layout is maintained. (Figure 4-8) Tighten blade bolts to 70 ft. lbs. Use only genuine Bush Hog replacement parts. Figure 4-7Bolt Head1/4” Minimum Against Blade Figure 4-8 Helical Arrangement 4-4 SLIP CLUTCH OPERATIONAL CHECK After tiller has been stored for 30 days or more, perform the following operational check: A. Loosen eight nuts retaining clutch springs exactly one full turn. B. With tiller blades firmly on ground and tractor at idle speed, engage tractor PTO drive for 2-3 sec- onds. Clutch should slip without turning blades. If clutch does not slip, contact your authorized Bush Hog dealer. C. Retighten nuts to within 1/64” of original position. Initial spring length is 1-1/16” (27mm). (Figure 4-9) CAUTION FAILURE TO RETIGHTEN SPRING NUTS TO ORIGINAL POSITION MAY CAUSE DAMAGE TO TILLER AND/OR TRACTOR DUE TO IMPROPER SLIP CLUTCH TORQUE SETTING. 4-5 SLIP CLUTCH ADJUSTMENT The slip clutch is factory preset to the correct torque for protecting implement and tractor. Periodic adjustment is recommended; refer to Section 4-4. Should adjustment be needed, first check to be sure all spring lengths are within 1/64” of being the same. Initial spring length is 1-1/16” (27mm) shown in Figure 4-9. If necessary, loosen nut on any spring that is unequal. Adjust all eight spring retaining nuts 2/3 of a turn (2 flats on a nut) and check clutch slip- page. If further adjustment is necessary, do so in 1/3 turn increments or consult your Bush Hog dealer. Adjust only to provide sufficient torque to prevent slippage under normal conditions. When rocks, roots, etc. are present, occasional slippage is normal for drivetrain protection. Figure 4-9 Clutch Spring Length 1-1/16” (27mm) 12 4-7 TROUBLESHOOTING ment parts are necessary, contact your authorized Bush Hog dealer. Please have ready your machine Troubleshooting procedures are listed in Table 4-1 name, model number, serial number, purchase date, below. If the problem cannot be solved or replace-and exact cause or description of problem. Table 4-1 Troubleshooting PROBLEM PROBABLE CAUSE REMEDY Uneven Till Tiller not level right to left Adjust skids for same depth Adjust tractor lower lift arms Noisy Loose components Check all bolts for tightness. Refer to Torque Specs Low oil in gearbox Check for proper oil level. Refer to Lubrication Section Knocking or Tiller is tilted towards the rear Adjust 3-point hitch top link to level tiller Chattering Bogging Tractor engine speed too slow Increase engine speed to 540 PTO rpm Ground spe...
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