Replace Left-Hand Lower Drive Roll Bearing

1. CAUTION: 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).

   
   E67554-UN-27AUG12

   Right-Hand Lower Drive Roll

   
   E67522-UN-24AUG12

   Left-Hand Lower Drive Roll

   A - Flanged Mounting Bolts (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 flange mounting cap screws (A) and cap screw (C).
   • Remove pickup drive roll chain (D).
   • Finger tighten cap screws (A) to allow side-to-side movement of cast housing and position roll to check roll wiper-to-sidesheet clearance.
   
   

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

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

6. Wire brush roll shaft.

   IMPORTANT:

   
   E54919-UN-30NOV06

   A - Stamp (UP)

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

   Clean washers and replace if necessary.

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7. IMPORTANT: 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-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 UP stamp toward top of baler) on shaft, snug four flange nuts (C), and pull roll firmly to left-hand side of baler.

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8. Center roll side-to-side:

   • Center roll side-to-side.
   • Measure from outer rubber strip to sidesheet 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 roll and left-hand bearing to center roll.
   
   

9. Tighten flange nuts (C) to specifications.

   Item	Measurement	Specification
   Flange Nut and Bolt	Torque	95 N·m (70 lb.-ft.)

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

    
    E67503-UN-23AUG12

    A - Lower Drive Roll

    B - Starter Roll

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

    If roll wiper pin contacts sidesheet hole, reposition bearing housing or bearing plate or grind wiper pin.

    Item	Measurement	Specification
    Roll-to-Sidesheet	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 mm

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

    Install sprocket and hardened washers (D).

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

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

14. Using a straight edge, check alignment between 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 bearing and sprocket on starter roll shaft, as needed, to align starter roll sprocket with lower drive roll sprocket.

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

    Item	Measurement	Specification
    Cap Screw	Torque	140 N·m (103 lb.-ft.)

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

19. 
    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 .9 mm (2 used) (Each Side of Bearing)

    Right-hand Side of Baler: Make sure that there are enough washers (B) between end of 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.

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

21. 
    E61864-UN-24AUG12

    
    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).

    Item	Measurement	Specification
    Cast Step	Distance	1.5—4.5 mm (0.059—0.177 in.)

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

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22. 
    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.

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23. Check to see if roll is centered in hole in sidesheet.

24. 
    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.

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25. 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.

26. 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.

    Item	Measurement	Specification
    Rollers-to-Sidesheet	Clearance	1 mm (0.04 in.)

27. IMPORTANT: To avoid center cap screw from loosening or 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 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 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.

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

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

29. 
    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 more 6 mm (0.25 in.) washer (B).

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30. 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).

31. 
    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 face of bearing plate and inside of slip clutch sprocket (MegaWide™ Plus pickup).

    Item	Measurement	Specification
    Dimension (A)	Distance	218 mm (8.58 in.)

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

    Item	Measurement	Specification
    Dimension (B)	Distance	190 mm (7.48 in.)

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

    NOTE: 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, M8

    C - Cap Screw, M12 x 80 mm

    Tighten cap screw (C) to specification.

    Item	Measurement	Specification
    M12 Cap Screw	Torque	140 N·m (103 lb.-ft.)

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35. Tighten middle flange mounting cap screw (B) first. Tighten remaining two flange mounting cap screws (A). Tighten all three cap screws to specification.

    Item	Measurement	Specification
    Cap Screw	Torque	40 N·m (30 lb.-ft.)

36. 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.

37. Reinstall all chains or belts and adjust properly.