Replace Right-Hand Lower Drive Roll Bearing

  1. E67559
    E67559-UN-27AUG12

    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 cast bearing flange and mounting flange.

  7. Remove old bearing.

  8. Install new bearing with 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 - Washers, 1.5 mm (0.060 in.) (2 used, As Required)

    E - Washers, 45.2 x 57.2 x .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).

    ItemMeasurementSpecification
    Cast StepDistance1.5—4.5 mm (0.059—0.177 in.)

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


  10. 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 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 hole in sidesheet.

  12. E67505
    E67505-UN-23AUG12

    A - Cap Screws

    B - Flange Nuts

    C - Shims

    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 sidesheet.


  13. Only retighten cap screws enough to get a light contact between 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. NOTE: Rolls must rotate freely. Check roll clearance through hole in sidesheet.

    If 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 sidesheet hole according to specifications. Add or remove shims (C) or move right-hand bearing plate, or grind drive roll wiper pins, if equipped.

    ItemMeasurementSpecification
    Rollers-to-SidesheetClearance1 mm (0.04 in.)

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

    E67555
    E67555-UN-27AUG12

    MegaWide™ Plus Pickup Shown

    A - Washers (Regular Pickup)

    A - Spacer (MegaWide™ Plus Pickup)

    B - Cap Screw, M12 x 80 mm

    C - Washer, 13 x 57 x 6 mm

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


  16. NOTE: Be sure there is no clearance between components.

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

  17. E67524
    E67524-UN-24AUG12

    Regular Pickup Shown

    A - Washers

    B - Washer, 6 mm (0.25 in.)

    C - Cap Screw, M12 x 80 mm

    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 end of shaft, then add one 6 mm (0.25 in.) washer (B).


  18. IMPORTANT: To avoid center cap screw from loosening or hex knock, keep washer (A and B) centered on shaft.

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

  19. E67556
    E67556-UN-27AUG12

    MegaWide™ Plus Pickup Shown

    E67467
    E67467-UN-27AUG12

    Regular Pickup Shown

    E67557
    E67557-UN-27AUG12

    MegaTooth™ Pickup Shown

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

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

    C - Dimension, 194 mm (7.63 in.) (MegaTooth™ Pickup—569 Only)

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

    ItemMeasurementSpecification
    Dimension (A)Distance218 mm (8.58 in.)

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

    ItemMeasurementSpecification
    Dimension (B)Distance190 mm (7.48 in.)

    Check dimension (C) between face of bearing plate and inside of slip clutch sprocket (MegaTooth™ pickup—569 only).

    ItemMeasurementSpecification
    Dimension (C)Distance194 mm (7.63 in.)


  20. If dimension measured in Step 19 cannot be obtained within ± 1.5 mm (0.060 in.), add or remove washers inside slip clutch or sheave to obtain dimension.

  21. If washers are added or removed inside slip clutch or sheave, repeat Steps 15—18 to clamp components securely in place on the shaft.

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

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

    E67385
    E67385-UN-15AUG12

    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.

    ItemMeasurementSpecification
    M12 Cap ScrewTorque140 N·m (103 lb.-ft.)


  23. Tighten middle flange mounting cap screw (B) first. Tighten flange mounting cap screws (A). Tighten all cap screws to specification.

    ItemMeasurementSpecification
    Cap ScrewTorque40 N·m (30 lb.-ft.)

  24. Check position of mounting edge to cast step in three locations. If mounting edge does not align in the cast sets, repeat Steps 9—23.

  25. Reinstall all chains or belts and adjust properly.

PP98408,00010AB-19-20130709