Replace Left-Hand Lower Drive Roll Bearing

1. To prevent bearing failure, always loosen the three right-hand side flange mounting bolts (A) before tightening the left-hand side (drive side) center cap screw (B).

   
   E67554-UN-27AUG12

   Right-Hand Lower Drive Roll

   
   E67522-UN-24AUG12

   Left-Hand Lower Drive Roll

   A - Cap Screw (3 used)

   B - Cap Screw, M12 x 80

   C - Cap Screw, M12 x 80

   D - Pickup Drive Roll Chain

   E - Lower Drive Roll Chain

   F - Starter Roll Chain

   Right-hand Side of Baler:

   1. Loosen three cap screws (A) and cap screw (C).

   2. Remove pickup drive roll chain (D).

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2. Left-hand Side of Baler: Remove crop buildup around shaft and roll area.

3. Remove cap screw (B) and sprocket, noting position and quantity of washers at each location.

4. Remove the lower drive roll chain (E) and the starter roll chain (F).

5. Remove four cap screws retaining the bearing housing and remove bearing.

6. Clean the roll shaft using a wire brush.

   
   E67502-UN-22AUG12

   
   E84138-UN-06SEP17

   A - Chamfered Spacer

   B - Hardened Washer (1.5 or 3 mm, as required)

   C - Flange Nut (4 used)

   D - Stamp (UP)

   Clean washers and replace if necessary.

   All 1.5 and 3.0 mm (0.06 and 0.12 in) thick washers are machined and hardened to help keep the center bolt from loosening and prevent hex knock. If washers must be replaced, obtain the proper washers from your John Deere dealer or qualified service provider.

   Position bearing with the UP stamp (D) on the housing toward the top of baler.

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7. Install the new bearing as follows:

   1. Install chamfered spacer (A) with the chamfer toward the roll.

   2. Install hardened washers (B) and the bearing on the shaft. Ensure that the UP stamp (D) is toward the top of the baler.

   3. Install flange nuts (C) and tighten until snug.

   4. Pull the roll firmly toward the left-hand side of the baler.

8. Center the roll side-to-side:

   1. Measure from the outer rubber strip to the side sheet on both sides to check roll centering.

   2. The difference between the two dimensions must be 6 mm (0.24 in) or less.

   3. If necessary, add or remove washers between the roll and the bearing to center the roll.

9. Tighten flange nuts (C) to specification.

   Flange Nut and Bolt	Torque	95 N·m (70 lb·ft)

10. 
    E67503-UN-23AUG12

    A - Lower Drive Roll

    B - Starter Roll

    It is permissible to grind drive roll wiper pins to 3 mm (0.12 in) height.

    Wiper pins on the lower drive roll (A) and starter roll bars (B) must clear the side sheet holes according to specifications.

    If the roll wiper pins contact the side sheet hole, reposition the bearing housing or bearing plate or grind wiper pins.

    Roll-to-Side Sheet	Radial Clearance	1 mm (0.04 in)

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11. 
    E67563-UN-18SEP12

    A - Hardened Washers (3 mm, as required)

    B - Thick Washer, 13 x 70 x 12 mm

    C - Cap Screw, M12 x 80

    D - Hardened Washers (1.5 or 3 mm, as required)

    E - Sprocket

    Install sprocket and hardened washers (D).

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12. To remove all the end play at the left-hand side of the baler, tap the right-hand side of the roll.

13. Hold the lower roll shaft to the left-hand side and push the lower drive roll sprocket and washers inward.

14. Using a straight edge, check alignment between the gear case output shaft outer sprocket and the lower drive sprocket. Add or remove washers (D) between the bearing and the sprocket on the lower drive roll shaft, as necessary.

15. Add or remove regular washers between the bearing and sprocket on starter roll shaft, as needed, to align the starter roll sprocket with the lower drive roll sprocket.

16. Install sprocket (E) on the drive roll shaft.

17. To prevent hex knock and keep cap screw (C) from loosening, keep hardened washers (A) centered about shaft. Make sure hardened washers (A) are not clamped between the end of shaft and thick washer (B).

    Install hardened washers (A) between the sprocket (E) and the end of shaft so that the washers extend 3—6 mm (0.12—0.24 in) past the end of the shaft.

18. Install cap screw (C) with thick washer (B). Tighten cap screw to specification.

    Cap Screw (C)	Torque	140 N·m (103 lb·ft)

19. Ensure that the washers do not rotate by hand. Joint must be clamped to eliminate hex knock.

20. 
    E84139-UN-22AUG17

    Bearing Assembly (Right-Hand Side)

    A - Cap Screw, M8 (2 used)

    B - Cap Screw, M10

    C - Bearing

    D - Washer, 45.2 x 57.2 x 0.9 mm

    E - Thin Washer (2 used, as required)

    F - Bearing Housing

    G - Mounting Bracket

    H - Distance

    Check the position of the bearing assembly on the right-hand end of the drive roll.

    1. Remove and retain cap screws (A and B).

    2. Hold the bearing (C) tight against the washers.

    3. Check the distance (H) between the outer edge of the step in the bearing housing (F) and the edge of the mounting bracket (G) in all three locations. Verify that the dimension is within specification.

       Distance (H)	Distance	1.5—4.5 mm (0.059—0.177 in)

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21. If the distance (H) is not within specification:

    1. Disassemble and remove the bearing assembly. Make note of the location of all washers.

    2. Add or remove washers (E) behind the bearing, as necessary, to obtain the correct distance in all three locations.

    3. Reinstall the bearing in the reverse order of removal. Make sure that washer (D) is installed next to the bearing.

    4. Recheck the mounting distance.

22. 
    E84137-UN-06SEP17

    Bearing (Right-Hand Side)

    A - Flanged Cap Screw (3 used)

    B - Flange Nut (2 used)

    Install previously removed cap screws (A and B). Tighten the cap screws only enough to get a light load between the bearing housing flanges and the mounting bracket. If necessary, lightly tap on the bearing housing to rotate the housing slightly and align the flanges at all three mounting locations. Do not fully tighten the cap screws at this time.

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23. 
    E84129-UN-16AUG17

    A - Cap Screw, M8 (2 used)

    B - Cap Screw, M10

    C - Shim (as needed)

    Check to see if the roll is centered in the hole in the side sheet.

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24. If the roll is not centered:

    1. Loosen cap screws (A and B).

    2. Insert shims (C) between the bearing mounting bracket and the bearing housing flanges as necessary.

    3. Snug up the cap screws but do not fully tighten at this time.

25. Rolls must rotate freely. Check roll clearance through the hole in the side sheet.

    If the roll is equipped with wiper pins, it is permissible to grind the wiper pins to 3 mm (0.12 in) minimum height.

    To verify that the clearance with the side sheet hole is according to specifications, spin the drive roll. Add or remove shims (C) or move right-hand bearing plate, or grind the wiper pins (if equipped).

    Roller Clearance	Radial Clearance	1 mm (0.04 in)

26. To keep the center cap screw from loosening and prevent hex knock, keep washers or spacer (A) centered on shaft.

    
    E67555-UN-27AUG12

    MegaWide™ Plus Pickup Shown

    A - Washers (Regular Pickup)

    A - Spacer (MegaWide™ Plus Pickup)

    B - Cap Screw, M12 x 80

    C - Washer, 13 x 57 x 6 mm

    Install washers, hollow sleeve, washers, and the slip clutch or sheave in same position and quantity removed. Then install washers or spacer (A) between clutch or sheave and washer (C) as specified here:

    MegaWide™ Plus pickup: Install spacer (A) against the face of clutch. Outside face of the spacer (A) must extend approximately 7 mm (0.28 in) beyond the end of the hex shaft. If it does not extend far enough, add thin washers between the spacer and clutch to obtain the required dimension.

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27. Be sure that there is no clearance between components.

    Install cap screw (B) and washer (C) and tighten securely to clamp components on shaft.

28. 
    E67524-UN-24AUG12

    Regular Pickup Shown

    A - Washers

    B - Washer, 6 mm (0.25 in)

    C - Cap Screw, M12 x 80

    D - End Washer, 13 x 57 x 6 mm

    E - Hub of Sheave

    Regular pickup: Install 1.5 mm (0.060 in) washers (A) against the outside of sheave until flush with the end of shaft, then add one more 6 mm (0.25 in) washer (B).

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29. To keep the center cap screw from loosening and prevent hex knock, keep washer (A and B) centered on shaft.

    Install cap screw (C) and end washer (D).

30. 
    E67556-UN-27AUG12

    MegaWide™ Plus Pickup Shown

    
    E67467-UN-27AUG12

    Regular Pickup Shown

    A - Dimension, 218 mm (8.58 in) (MegaWide™ Plus Pickup)

    B - Dimension, 190 mm (7.48 in) (Regular Pickup)

    Check dimension (A) between the face of the bearing plate and the inside of the slip clutch sprocket (MegaWide™ Plus pickup).

    Dimension (A)	Distance	218 mm (8.58 in)

    Check dimension (B) between the face of the bearing plate and the center of the sheave groove (regular pickup).

    Dimension (B)	Distance	190 mm (7.48 in)

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31. If the sheave or sprocket spacing dimension cannot be obtained within 1.5 mm (0.060 in), add or remove washers inside the slip clutch or sheave to obtain the dimension.

32. If washers are added or removed inside the slip clutch or sheave, repeat the previous steps to clamp components securely in place on the shaft.

33. To prevent bearing failure, always tighten cap screw (C) before tightening flange mounting cap screws (A and B).

    Ensure that washers do not rotate by hand. Joint must be clamped to eliminate hex knock.

    
    E67558-UN-27AUG12

    MegaWide™ Plus Pickup Shown

    A - Cap Screw, M8

    B - Middle Cap Screw, M10

    C - Cap Screw, M12 x 80

    Tighten cap screw (C) to specification.

    M12 Cap Screw	Torque	140 N·m (103 lb·ft)

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34. Tighten middle flange mounting cap screw (B) first, then tighten flange mounting cap screws (A). Tighten all cap screws to specification.

    Cap Screw (B)	Torque	80 N·m (59 lb·ft)
    Cap Screw (A)	Torque	40 N·m (30 lb·ft)

35. Check the distance between the edge of step on the bearing housing and the mounting bracket in all three locations. If the distance is not within specification at all locations, repeat the previous steps to adjust and recheck.

36. Reinstall all chains or belts and adjust properly.