Replace Right-Hand Lower Drive Roll Bearing

  1. E67741
    E67741-UN-06SEP12

    A - Cap Screw

    B - Drive Chain

    C - Cap Screw (3 used)

    Loosen cap screw (A).


  2. Remove drive chain (B).

  3. Carefully remove cap screw (A) and washers outside sprocket or sheave taking note of quantity and position of washers.

  4. Remove sprocket and slip clutch or sheave.

  5. Remove remaining washers, hollow sleeve, and washers next to bearing again noting quantity and position of all the parts.

  6. Loosen and remove cap screws (C) from bearing and mounting flange. Note position and quantity of any shims between the cast bearing flange and mounting flange.

  7. Remove old bearing.

  8. Install new bearing with the cast bearing flange.

  9. 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 (2 used, as required)

    E - Washer (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.
    Dimension (C)Distance1.5—4.5 mm (0.059—0.177 in)

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


  10. E67383
    E67383-UN-21AUG12

    A - Flanged Cap Screw (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 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.


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

  12. E67505
    E67505-UN-23AUG12

    A - Cap Screw (3 used)

    B - Flange Nut (3 used)

    C - Shim (as needed)

    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.


  13. 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.

  14. 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 drive roll wiper pins to 3 mm (0.12 in) minimum height.

    To verify the clearance with the side sheet hole 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)

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

    E67738
    E67738-UN-06SEP12

    MegaWide™ Plus Pickup Shown

    A - Spacer

    B - Cap Screw, M12 x 80

    C - Washer

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

    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.


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

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

  17. E67739
    E67739-UN-06SEP12

    MegaWide™ Plus Pickup Shown

    A - Dimension, 218 mm (8.58 in)

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


  18. If dimension measured in step 17 cannot be obtained within ± 1.5 mm (0.060 in), add or remove washers inside slip clutch or sheave to obtain dimension.

  19. If washers are added or removed inside slip clutch or sheave, repeat steps 15 and 16 to clamp components securely in place on the shaft.

  20. To prevent bearing failure, always tighten M12 cap screw (C) before tightening flange mounting M8 cap screws (A—B).

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

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


  21. 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)

  22. 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 9—21.

  23. Reinstall all chains or belts and adjust properly.

SF04007,00010B7-19-20171121