Feeder House Variable Speed Drive Belt—Adjusting

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

H84134
H84134-UN-26JUL05

A - Rubber Boot

B - Bracket

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

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 will be against bracket (B).

H84135
H84135-UN-26JUL05

A - Nut

B - Idler

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

H84136
H84136-UN-27JUL05

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.

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

H84138
H84138-UN-26JUL05

A - Nut

B - Bracket

C - Nut

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).

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.

H84139
H84139-UN-26JUL05

H84140
H84140-UN-26JUL05

A - Nut

B - Bolt

C - Gap, 3 mm (1/8 in.)

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

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.

CQ280323
CQ280323-UN-23APR08

A - Nut

B - Nut

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

H84136
H84136-UN-27JUL05

A - Nuts (2 Used)

B - Bracket

C - Nuts (3 Used)

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

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

CQ280324
CQ280324-UN-23APR08

A - Idler

B - Nut

Raise idler (A) until idler touches drive belt.

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

H83967
H83967-UN-18JUL05

A - Nut

B - Drive Belt

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

Install feeder house shields.

GB52027,00005A3-19-20080423