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 for paddle blades. Always maintain original factory provided blade pattern.

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

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.

2. Inspect bushings (D) while replacing blades. Replace worn bushings. See your John Deere dealer for replacement parts.

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

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IMPORTANT: Chopper balance MUST be maintained. Replace BOTH blades on single support and BOTH blades on opposite support (180°). Also, replace the four blades at the other 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.

Example: If paddle blade (E) is broken, replace paddle blades (E-L).

3. Replace blade and install cap screw (B), washer (C), bushing (D) and lock nut (A). Tighten nut to specification.

Specification

IMPORTANT: Verify clearance between rotor blades and stationary knives, by rotating rotor by hand, before running chopper.

A-Lock Nut
B-Cap Screw
C-Washers
D-Bushings
E-L-Paddle Blade

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