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 left-hand side (drive side) center cap screw (B).

    E83898
    E83898-UN-03AUG17

    Right-Hand Lower Roll Drive

    E83902
    E83902-UN-04AUG17

    Left-Hand Lower Roll Drive

    A - Flanged Mounting 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:

    • Loosen three flange mounting cap screws (A) and cap screw (C).
    • Remove the roll chain (D).
    • Finger tighten cap screws (A) to allow side-to-side movement of the cast housing and position roll to check roll wiper-to-side sheet clearance.


  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 lower drive roll chain (E) and starter roll chain (F).

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

  6. Wire brush the roll shaft.

    E54919
    E54919-UN-30NOV06

    A - Stamp (UP)

    Locate housing with the UP stamp (A) toward the top of the baler.

    Clean washers and replace if necessary.


  7. All 1.5 and 3.0 mm (0.06 and 0.12 in) thick washers must be machined and hardened on left-hand lower drive roll position to avoid center bolt loosening or hex knock.

    E67502
    E67502-UN-22AUG12

    A - Chamfered Spacer

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

    C - Flange Nut (4 used)

    Install chamfered spacer (A) (chamfer toward roll), hardened washers (B), and bearing (with the UP stamp toward the top of the baler) on the shaft. Snug the four flange nuts (C) and pull the roll firmly to left-hand side of the baler.


  8. Center roll side-to-side:

    • Center roll side-to-side.
    • Measure from the outer rubber strip to the side sheet on both sides to check roll centering.
    • The difference between the two dimensions must be 6 mm (0.24 in) or less.
    • If needed, add or remove washers between the roll and the left-hand bearing to center roll.

  9. Tighten flange nuts (C) to specifications.
    Flange Nut and BoltTorque95 N·m (70 lb·ft)

  10. Permissible to grind drive roll wiper pins to 3 mm (0.12 in) height.

    E67503
    E67503-UN-23AUG12

    A - Lower Drive Roll

    B - Starter Roll

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

    If the roll wiper pin contacts side sheet hole, reposition bearing housing or bearing plate or grind wiper pin.
    Roll-to-Side SheetRadial Clearance1 mm (0.04 in)


  11. E67563
    E67563-UN-18SEP12

    A - Hardened Washer (3 mm, as required)

    B - Thick Washer, 13 x 70 x 12 mm

    C - Cap Screw, M12 x 80

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

    Install sprocket and hardened washers (D).


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

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

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

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

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

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

  17. Install cap screw (C) with thick washer (B). Tighten cap screw (C) to specification.
    Cap ScrewTorque140 N·m (103 lb·ft)

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

  19. E67545
    E67545-UN-24AUG12

    A - Spacer

    B - Thin Washer (2 used, as required)

    C - Bearing

    D - Mounting Strap

    E - Cast Housing

    F - Cap Screw, M8 (3 used)

    G - Washers, 45.2 x 57.2 x 0.9 mm (2 used) (each side of bearing)

    Right-hand side of baler: Make sure that there are enough washers (B) between the end of the roll tube and bearing to locate bearing cast housing correctly. Remove three M8 cap screws (F) to be installed later. Washer (G) must be next to bearing on both sides.


  20. Hold bearing (C) tight against washers. Edge of mounting strap (D) must align with the step of the cast housing (E) in three locations.

  21. E61864
    E61864-UN-24AUG12

    E61865
    E61865-UN-22OCT12

    A - Cast Step

    B - Mounting Strap Edge

    C - Dimension, 1.5—4.5 mm (0.059—0.177 in)

    D - Washer, 1.5 mm (0.060 in) (2 used, as required)

    E - Washer, 45.2 x 57.2 x 0.9 mm (2 used) (each side of bearing)

    If necessary, add or subtract washers (D) behind bearing to locate cast step (A) correctly with mounting edge (B) in all three locations. Set mounting edge to specification (C).
    Cast StepDistance1.5—4.5 mm (0.059—0.177 in)

    Be sure that there is one washer (E) on each side of bearing.


  22. E67383
    E67383-UN-21AUG12

    A - Flange Head Cap Screw (2—8M and 1—10M used)

    B - Flange Nut (3 used)

    Install three flange mounting cap screws (A) and nuts (B). Only tighten cap screws enough to get a light contact between the cast flange and mounting strap. Some rotation (a light tap) of the cast flange around the outer race can be required to align flange correctly at all three locations. Do not tighten cap screws at this time.


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

  24. E67505
    E67505-UN-23AUG12

    A - Cap Screw (3 used)

    B - Nut (3 used)

    C - Shim (as necessary)

    If necessary, loosen cap screws (A) and flange nuts (B) to insert shims (C) between bearing mounting flange and the cast bearing flange to center rolls in holes in the side sheet.


  25. Only retighten cap screws enough to get a light contact between the cast flange and mounting strap. Some rotation (a light tap) of the cast flange around the outer race can be required to align flange correctly at all three locations. Do not tighten cap screws at this time.

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

    If roll is equipped with wiper pins, it is permissible to grind drive roll 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 upper drive roll. Add or remove shims (C) or move right-hand bearing plate, or grind drive roll wiper pins, if equipped.
    Rollers-to-Side SheetClearance1 mm (0.04 in)

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

    E83899
    E83899-UN-03AUG17

    MegaWide™ Plus Pickup Shown

    A - Washer (Regular Pickup)

    A - Spacer (MegaWide™ Plus Pickup)

    B - Cap Screw, M12 x 80

    C - Washer, 13 x 57 x 6

    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 the 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.


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

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

  29. E67524
    E67524-UN-24AUG12

    Regular Pickup Shown

    A - Washer

    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).


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

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

  31. E83900
    E83900-UN-03AUG17

    MegaWide™ Plus Pickup Shown

    E67467
    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 face of the bearing plate and inside of slip clutch sprocket (MegaWide™ Plus pickup).
    Dimension (A)Distance218 mm (8.58 in)

    Check dimension (B) between face of the bearing plate and center of the sheave groove (Regular pickup).
    Dimension (B)Distance190 mm (7.48 in)


  32. If dimension measured in Step 31 cannot be obtained within ± 1.5 mm (0.060 in), add or remove washers inside slip clutch or sheave to obtain dimension.

  33. If washers are added or removed inside slip clutch or sheave, repeat steps 27—30 to clamp components securely in place on the shaft.

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

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

    E83901
    E83901-UN-04AUG17

    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 ScrewTorque140 N·m (103 lb·ft)


  35. Tighten middle flange mounting cap screw (B) first. Tighten to specification.
    Cap Screw (M10)Torque80N·m (60 lb·ft)

  36. Tighten remaining two flange mounting cap screws (A). Tighten all three cap screws to specification.
    Cap Screw (M8)Torque40 N•m (30 lb·ft)

  37. To cast the step in three locations, check the position of the mounting edge. If mounting edge does not align in the cast sets, repeat steps 19—27.

  38. Reinstall all chains or belts and adjust properly.

MegaWide is a trademark of Deere & Company

SF04007,0000F93-19-20170913