Chopper Blades-Replacement And Configuration

CAUTION: Shut OFF engine, set parking brake and remove key. Before performing service or maintenance on raised chopper, use lift actuator to snap lock-out pins into place.

NOTE: Rotor shown illustrates blade replacement examples for both paddle and straight blades. Always maintain original factory provided blade pattern.

Outer Most Blade Removal:

NOTE: If removing blades or bushings for inspection purposes, be certain to reinstall blades on SAME support from which they were removed. This must be done to maintain balance. It is a good practice to individually mark each blade before removal.

Remove lock nut (A), cap screw (B), washer (C), and bushings (D), (E), (F).

Inspect and if needed replace blade bushings (D), (E), and (F) while replacing blades. See your John Deere dealer for replacement parts.

A-Lock Nut
B-Cap Screw
C-Washer
D-Bushing
E-Bushing
F-Bushing

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Inner Blade Removal:

NOTE: If removing blades or bushings for inspection purposes, be certain to reinstall blades on SAME support from which they were removed. This must be done to maintain balance. It is a good practice to individually mark each blade before removal.

Remove lock nut (A), cap screw (B), bushings (C) and (D).

Inspect and if needed replace blade bushings (C) and (D) while replacing blades. See your John Deere dealer for replacement parts.

A-Lock Nut
B-Cap Screw
C-Bushings
D-Bushings

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Blade Configuration:

IMPORTANT: Chopper balance MUST be maintained. Replace BOTH blades on single support and BOTH blades on opposite support (180 degrees). Also, replace the four blades at the opposite end of the rotor, at the same axial distance from the balance ring. Eight blades MUST be installed to replace one broken blade, or all the blades can be replaced at one time. This MUST be done to keep vibration to a minimum.

If paddle blade (A) is broken, replaces paddle blades (A-H).

If straight blade (I) is broken, replace straight blades (I-P).

A-H-Paddle Blades
I-P-Straight Blades

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Outer Most Blade Installation:

Replace blade and install cap screw (B), washer (C), bushings (D), (E), (F), and lock nut (A). Tighten nuts to specification.

Specification

A-Lock Nut
B-Cap Screw
C-Washer
D-Bushing
E-Bushing
F-Bushing

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Inner Blade Installation:

Replace blade and install cap screw (B), bushings (C), (D), and lock nut (A). Tighten nuts to specification.

Specification

A-Lock Nut
B-Cap Screw
C-Bushings
D-Bushings

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