Replace Left-Hand Lower Drive Roll Bearing

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

    E67742
    E67742-UN-06SEP12

    Right-Hand Lower Drive Roll

    E67522
    E67522-UN-24AUG12

    Left-Hand Lower Drive Roll

    A - Cap Screw (3 used)

    B - Cap Screw, M12 x 80 mm

    C - Cap Screw, M12 x 80 mm

    D - Pickup Drive Roll Chain

    E - Lower Drive Roll Chain

    F - Starter Roll Chain

    Right-hand Side of Baler:

    • Loosen three cap screws (A) and cap screw (C).
    • Remove the pickup drive roll chain (D).
    • Finger tighten cap screws (A) to allow side-to-side movement of the cast housing and position the 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 the lower drive roll chain (E) and starter roll chain (F).

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

  6. Clean the roll shaft with a wire brush.

    E54919
    E54919-UN-30NOV06

    A - Stamp (UP)

    Locate housing with the UP stamp (A) toward top of 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 Washers (1.5 or 3 mm, As Required)

    C - Flange Nuts (4 used)

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


  8. Center roll side-to-side:

    • Center roll side-to-side.
    • Measure from the outer rubber strip to 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 the 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 the side sheet hole, reposition the bearing housing or bearing plate or grind wiper pin.
    Roll-to-SidesheetRadial Clearance1 mm (0.04 in)


  11. E67563
    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 mm

    D - Hardened Washers (1.5 or 3 mm, As Required)

    Install sprocket and hardened washers (D).


  12. Tap right-hand side of roll to remove all end play to left-hand side of baler.

  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 outer sprocket on the gear case output shaft and the lower drive sprocket. Add or remove machined and hardened washers between the bearing and sprocket on thelower drive roll shaft, as needed.

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

  16. To avoid hex knock and prevent 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 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 washers do not rotate by hand. Joint must be clamped to eliminate 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 the bearing to locate the 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 - Washers, 1.5 mm (0.060 in) (2 Used, As Required)

    E - Washers, 45.2 x 57.2 x 0.9 mm (2 used) (Each Side of Bearing)

    If necessary, add or subtract washers (D) behind the bearing to locate the 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 - Flanged Cap Screws (3 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 the 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 Screws

    B - Flange Nuts

    C - Shims

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


  25. Only retighten cap screws enough to get a light contact between the cast flange and the 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 the roll is equipped with wiper pins, it is permissible to grind drive roll wiper pins to 3 mm (0.12 in) minimum height.

    Spin upper drive roll to verify clearance with the side sheet hole according to specifications. Add or remove shims (C) or move the right-hand bearing plate, or grind drive roll wiper pins, if equipped.
    Rollers-to-SidesheetClearance1 mm (0.04 in)

  27. E67738
    E67738-UN-06SEP12

    MegaWide™ Plus Pickup Shown

    A - Spacer

    B - Cap Screw, M12 x 80 mm

    C - Washer, 13 x 57 x 6 mm

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

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

    Install spacer (A) against the face of the clutch. The 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. E67739
    E67739-UN-06SEP12

    MegaWide™ Plus Pickup Shown

    A - Dimension, 218 mm (8.58 in)

    Check dimension (A) between the face of the bearing plate and the inside of the slip clutch sprocket.
    Dimension (A)Distance218 mm (8.58 in)


  30. If dimension measured in step 29 cannot be obtained within 1.5 mm (0.060 in), add or remove washers adjacent to the drive roll bearing to obtain dimension.

  31. If washers are added or removed adjacent to the drive roll bearing, repeat steps 27 and 28 to clamp components securely in place on the shaft.

  32. 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.

    E67740
    E67740-UN-06SEP12

    MegaWide™ Plus Pickup Shown

    A - Cap Screw, M8

    B - Middle Cap Screw, M8

    C - Cap Screw, M12 x 80 mm

    Tighten cap screw (C) to specification.
    M12 Cap ScrewTorque140 N·m (103 lb·ft)


  33. Tighten middle flange mounting cap screw (B) first. Tighten flange mounting cap screws (A). Tighten all cap screws to specification.
    Cap ScrewTorque40 N·m (30 lb·ft)

  34. Check position of mounting edge to cast step in three locations. If mounting edge does not align in the cast sets, repeat steps 19—26.

  35. Reinstall all chains or belts and adjust properly.

DP99999,0000D06-19-20171102