Remove and Install Concave Sections

NOTE: For ease of removal, close concave completely.

1. Move handle (A) to shift rotor gear case in neutral position (B).

A-Rotor Drive Gear Case Handle
B-Neutral Position

AG,OUO1026,19 -19-15FEB99-1/21

2. Remove spring clip and open side shield (A).

3. Remove spring clips and remove shields (B) and (C).

A-Shield
B-Shield
C-Shield

AG,OUO1026,19 -19-15FEB99-2/21

4. Remove separator inspection covers (A).

A-Separator Cover

AG,OUO1026,19 -19-15FEB99-3/21

NOTE: Removing separator grate provides access for rotating rotor for maximum concave clearance.

5. Remove cap screws (A) and separator grate (B).

A-Cap Screw (4 used)

AG,OUO1026,19 -19-15FEB99-4/21

6. Loosen cap screws (A) and remove left-hand sheet metal diverter (B).

A-Cap Screw (4 used)
B-Diverter

AG,OUO1026,19 -19-15FEB99-5/21

7. Place a piece of cardboard (A) or poly over conveyor augers. This provides protection for the augers and allows a smooth surface to remove the concaves.

A-Cardboard

AG,OUO1026,19 -19-15FEB99-6/21

8. Remove spring clips and shields (A).

A-Shields

AG,OUO1026,19 -19-15FEB99-7/21

9. Remove spring clips and front two separator covers (A) on right-hand side of combine

A-Separator Cover

AG,OUO1026,19 -19-15FEB99-8/21

10. Remove spring lock pin and two-piece retainer (A) from each concave section.

A-Two-Piece Retainer

AG,OUO1026,19 -19-15FEB99-9/21

11. Loosen 12 cap screws (A).

12. Fully open concave. This will allow the weight of the concaves to rest on the conveyor auger bed.

A-Cap Screw (12 used)

AG,OUO1026,19 -19-15FEB99-10/21

13. Remove 12 cap screws (A).

14. Remove cotter pins, pins (B) and "Z" bar (C).

15. Remove middle concave section.

16. Slide rear concave to the middle position and remove.

17. Remove front concave.

18. Install concaves in opposite order.

A-Cap Screw (12 used)
B-Pin (2 used)
C-"Z" Bar

AG,OUO1026,19 -19-15FEB99-11/21

19. Install two-piece retainer (A) on concave sections.

A-Retainer

AG,OUO1026,19 -19-15FEB99-12/21

20. Position "Z" bar (C) over end of concaves and install 12 cap screws, but do not tighten.

21. Install pins (B).

22. Fully close concave.

A-Cap Screw (12 used)
B-Pin (2 used)
C-"Z" Bar

AG,OUO1026,19 -19-15FEB99-13/21

23. Be sure the ends of concaves fit snug into "Z" bar; then tighten top row of cap screws (A) first.

24. Tighten bottom row of cap screws last.

25. Adjust concave level. (See ADJUST CONCAVE LEVEL in this group.)

A-Cap Screw (6 used)

AG,OUO1026,19 -19-15FEB99-14/21

26. Install separator covers (A).

A-Separator Cover (2 used)

AG,OUO1026,19 -19-15FEB99-15/21

27. Install shields (A).

A-Shields

AG,OUO1026,19 -19-15FEB99-16/21

28. Install separator grate (B) and retain with cap screws (A).

A-Cap Screw (4 used)

AG,OUO1026,19 -19-15FEB99-17/21

29. Remove cardboard (A) or poly from conveyor augers.

A-Cardboard

AG,OUO1026,19 -19-15FEB99-18/21

30. Install diverter (B) to original position and tighten cap screws (A).

A-Cap Screw (4 used)
B-Diverter

AG,OUO1026,19 -19-15FEB99-19/21

31. Install separator inspection covers (A).

A-Covers

AG,OUO1026,19 -19-15FEB99-20/21

32. Install shields (B) and (C).

33. Close side shield (A).

34. Place rotor drive gear case in desired speed range.

A-Shield
B-Shield
C-Shield

AG,OUO1026,19 -19-15FEB99-21/21