Install 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 side (drive side) center M12 cap screw (B)

   
   E57626-UN-13JUL09

   Right-hand Lower Drive Roll Bearing

   
   E56433-UN-07JAN09

   Left-hand Lower Drive Roll

   A - Flanged Mounting Bolts (3 used)

   B - Cap Screw, M12 x 80

   C - Cap Screw, M12 x 80

   Right-hand Side: Loosen three flange mounting cap screws (A) and cap screw (C). 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: Remove crop buildup around shaft and roll area.

3. Wire brush roll shaft.

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

   
   E57573-UN-09JUL09

   A - Chamfered Spacer

   B - Hardened Washers

   C - Flange Nuts (4 used)

   D - Center Bolt

   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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5. 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.
   
   

6. Tighten flange nuts (C) to specifications.

   Flange Nut and Bolt	Torque	95 N•m (70 lb.-ft.)

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

   
   E54891-UN-15NOV06

   A - Lower Drive Roll

   B - Starter Roll

   C - Wiper Pin

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

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

   Roll-to-Sidesheet	Clearance	1 mm (0.04 in.)

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8. Install sprocket with larger hub pointing toward roll.

   
   E57574-UN-09JUL09

   A - Hardened Washers

   B - Thick Washer, 13 x 70 x 12 mm (0.50 x 2.75 x 0.47 in.)

   C - Cap Screw, M12 x 80

   D - Hardened Washers

   Install sprocket and hardened washers (D).

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9. Tap right-hand side of roll to remove all endplay to left-hand side of baler.

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

11. 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.

12. Install M12 x 80 cap screw (C) with 13 x 70 x 12 mm (0.50 x 2.75 x 0.47 in.) thick washer (B). Tighten cap screw (C) to specification.

    Cap Screw	Torque	140 N•m (103 lb.-ft.)

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

14. 
    E56412-UN-11MAR09

    A - Drive Sprocket

    B - Outer Sprocket

    C - Straight Edge

    Check alignment with a straight edge (C) between lower drive sprocket (A) and gear case output shaft outer sprocket (B). Add or remove machined and hardened washers between bearing and sprocket on lower drive roll shaft, as needed.

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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. 
    E56405-UN-06JAN09

    A - Spacer

    B - Thin Washer

    C - Bearing

    D - Mounting Strap

    E - Cast Housing

    F - Cap Screw, M8 (3 used)

    Right-hand Side: Make sure 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.

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

18. 
    E54509-UN-15MAY06

    A - Cast Step

    B - Mounting Strap Edge

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

    Add or subtract washers behind bearing, if necessary, to locate cast step (A) correctly with mounting edge (B) in all three locations. Set mounting edge to specification.

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

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19. 
    E57567-UN-09JUL09

    
    E57565-UN-09JUL09

    
    E57568-UN-09JUL09

    A - Flanged Cap Screws (3 used)

    B - Flanged Nut (3 used)

    C - Washers

    D - Large (Thick Washer)

    E - Cap Screw, M12 x 80

    F - Shims

    G - Washer, 13 x 70 x 12 mm (0.50 x 2.75 x 0.47 in.)

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

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20. 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 (F) or move right-hand bearing plate, or grind drive roll wiper pins, if equipped.

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

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

    Install washers (C) between bearing and end of hex shaft, so washers are flush with end of shaft, and add one more washer. Add large thick ID washer (D).

22. Install M12 x 80 cap screw (E) and 13 x 70 x 12 mm (0.50 x 2.75 x 0.47 in.) end washer (G).

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

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

    
    E57566-UN-09JUL09

    A - Cap Screw, M8 (2 used)

    B - Cap Screw, M8

    C - Cap Screw, M12 x 80

    Tighten M12 x 80 cap screw (C) to specification.

    M12 Cap Screw	Torque	140 N•m (103 lb.-ft.)

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

    Cap Screw	Torque	40 N•m (30 lb.-ft.)

25. Check position of mounting edge to cast step in three locations. If mounting edge does not align in the cast sets, repeat Steps 16—24.