Aligning DrivelineA number of factors contribute to driveline vibration in turns, such as wear of drawbar holes, front and rear tractor tire sizes, wear on top of the drawbar, bent drawbar and wear on the MoCo hitch. The following procedure will help reduce driveline vibrations in turns. Before proceeding with this process ensure the following items are not the cause of the driveline vibration;
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AG,EX01223,178 -19-11SEP98-1/4 |
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1. Position tractor at a right angle to the MoCo tongue as shown, raise platform and engage lift cylinder lock-outs. 2. Start tractor and bring engine up to operating rpms. 3. Engage PTO and note the amount of vibration. 4. Turn off tractor. 5. Install jack stand (A) on tongue. 6. Use jack stand and raise hitch (B) off the drawbar (C) approx 13 mm (0.5 in.). 7. Start tractor and bring engine up to operating rpms. 8. Engage PTO and note the amount of vibration. 9. Turn off tractor. 10. Repeat STEPS 6-8 until driveline position with the least amount of vibration has been found. |
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AG,EX01223,178 -19-11SEP98-2/4 |
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11. Note the distance between the underside (A) of the hitch (C) and top (B) of the drawbar. NOTE: If required hitch adjustment is out of range, it will be necessary to order and install (STEPS 13-16) a clevis support channel and related hardware from service parts through your John Deere dealer. 12. Adjust hitch (C) to the dimension noted in STEP 11 . (See ADJUSTING MOWER-CONDITIONER HITCH in the PREPARING THE MOWER-CONDITIONER section.) |
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AG,EX01223,178 -19-11SEP98-3/4 |
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13. Install clevis support channel (A) in bottom hole (B) of tonghue assembly (C). 14. Fasten with two M12 x 30 cap screws (D) and lock nuts, and two M16 x 200 cap screws (E) and lock nuts. 15. Using the holes in the clevis support channel, position the clevis at the desired height as shown.
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AG,EX01223,178 -19-11SEP98-4/4 |