Feeder House Variable Speed Drive Belt-Replacing

CAUTION: Lower variable sheave is under spring tension; if belt is removed, it will snap back to a closed position.

Start engine, engage separator and move engine speed switch to fast idle. Adjust feeder house drive belt to slow front shaft speed.

CAUTION: Shut OFF engine, set parking brake and remove key.

Disengage separator, stop engine, and remove key.

Lower safety stop and remove left-hand feeder house shields.

Look under rubber boot (A) to verify if upper sheaves are fully open. At low speed position, outer sheave half bulb is against bracket (B).

A-Rubber Boot
B-Bracket

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Remove shields (A).

Loosen idler nut (B) to relieve drive belt tension.

A-Shields
B-Nut

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Loosen nuts (A) to relieve tension on reel drive belt (B).

A-Nut
B-Drive Belt

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Remove and retain nuts (A) and bracket (B).

Loosen nuts (C) to allow upper sheave assembly to move.

A-Nuts (2 Used)
B-Bracket
C-Nuts (3 Used)

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NOTE: Nut (C) must be moved and jammed against nut (A). Together these nuts can be used to turn tensioner bolt.

Loosen nut (A) away from bracket (B) until a 3 mm (1/8 in.) gap exists between either side of bracket.

Tighten nut (C) against nut (A).

NOTE: Threading bolt into tensioner allows sheave to move forward to remove drive belt.

Use nut (A) to screw threaded bolt into tensioner (D).

A-Nut
B-Bracket
C-Nut
D-Tensioner

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Remove drive belt (A) from sheaves.

Install replacement drive belt and adjust tension. (See Feeder House Variable Speed Belt-Adjusting).

Install bracket and feeder house shields previously removed.

A-Drive Belt

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