Feeder House Variable Speed Drive Belt—Replacing

H90912
H90912-UN-28FEB08

A - Rubber Boot

B - Bracket

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.

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).

H90910
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A - Shields

B - Nut

Remove shields (A).

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

H90976
H90976-UN-06MAR08

A - Nut

B - Drive Belt

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

H90967
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A - Nuts (2 Used)

B - Bracket

C - Nuts (3 Used)

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

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

H90913
H90913-UN-28FEB08

A - Nut

B - Bracket

C - Nut

D - Tensioner

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).

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

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

H90911
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A - Drive Belt

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.

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