Feeder House Variable Speed Belt-Adjustment

NOTE: Minor adjustments can be made to the feeder house variable speed belt by raising idler. If a 3 mm (1/8 in.) gap cannot be reached by raising idler, proceed to next.

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

2. Disengage separator, stop engine and remove key.

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

4. Remove feeder house shields.

H84134


A-Rubber Boot
B-Bracket

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5. Loosen nut (A) to adjust idler (B) to lower position.


A-Nut
B-Idler

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

7. 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) may be moved and jammed against nut (A). Together these nuts can be used to turn tensioner bolt.

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

9. Tighten nut (C) against nut (A).


A-Nut
B-Bracket
C-Nut

H84138

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IMPORTANT: Rotate belt while adjusting sheave gap. Failure to rotate belt while adjusting sheave gap will result in belt damage.

A gap between sheave halves is important so sheave halves can grip belt when in slow speed position. Cutting platform drive shaft speed must be at slow speed.

10. Turn nut (A) to adjust bolt (B).

11. Move upper variable sheave assembly with bolt until a 3 mm (1/8 in.) gap exists between lower sheave halves or upper sheave assembly reaches end of slots.


A-Nut
B-Bolt
C-Gap, 3 mm (1/8 in.)

H84139
H84140

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12. Tighten nut (A) first and then nut (B).


A-Nut
B-Nut

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13. Tighten nuts (C) and install bracket (B) and retain with nuts (A).


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

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IMPORTANT: DO NOT Stand on belt while pushing up on idler to set gap.

14. Raise idler (A) until idler touches belt.

15. Raise belt an additional 25 mm (1 in.) and tighten nut (B).


A-Idler
B-Nut

H85582

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16. Tighten adjusting nut (A) to position washer between end of gauge and bottom of step to adjust reel drive belt (B).

17. Install feeder house shields.


A-Nut
B-Belt

H83967

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