Changing Impeller Rotor Speed

Conditioning intensity can be adjusted by changing the impeller rotor speed. Two rotor speeds are available, depending on position of drive sheaves (A and B):

  • 865 rpm with small sheave on impeller rotor and large sheave on cutterbar input drive gear case (This is the factory adjustment.).
  • 624 rpm with large sheave on impeller rotor and small sheave on cutterbar input drive gear case.

1. Remove impeller rotor sheave and conditioner drive belt (See Replacing Conditioner Drive Belt in Service section).

2. Remove cap screw, washer and sheave (B).

3. Install sheave removed from impeller rotor on cutterbar input drive gear case. Install washer and cap screw. Tighten cap screw to specifications.

Specification

Cap Screw -Torque 339 N·m (250 lb-ft)

4. Install conditioner drive belt and impeller rotor sheave (See Replacing Conditioner Drive Belt in Service section).

CC017055
E41414

Cutterbar Input Drive Gear Case (946)


A-Impeller Rotor Sheave
B-Cutterbar Gear Case Drive Sheave

OUCC006,0000288 -19-08NOV00-1/1