Replacing Conditioner Drive Belt—Impeller Conditioner

Practice Safe Service Procedures

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A - Cylinder Lock (2 used)

CAUTION: To help prevent personal injury caused by unxpected movement, be sure to service machine on a level surface.

If machine is connected to tractor, engage tractor parking brake and/or place transmission in “Park”, shut off engine and remove key.

If machine is detached from tractor, block wheels to prevent movement.

CAUTION: Engage BOTH cylinder locks when working on machine. Failure to do so can result in personal injury or machine damage.

Before servicing or adjusting mower-conditioner:

1. Disengage all power.
2. Shut off tractor engine.
3. Wait until all moving parts have stopped.

Before working under platform, engage both cylinder locks (A) to prevent accidental lowering of machine.

1. Raise platform and engage cylinder locks.

2. Raise left-hand side front door to access drive sheave on gear case. (See RAISING AND LOWERING FRONT DOORS AND CURTAINS in Operating the Mower-Conditioner section.)

3. 
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   946 Shown

   A - Shield

   Remove shield (A).

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4. 
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   A - Door

   Open door (A).

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5. 
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   A - Idler

   B - Rotor Sheave

   C - Nuts and Washer

   Remove two nuts and washer (C).

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6. Remove cotter pins, pivot pin and idler (A).

7. Remove cap screw, washer and impeller rotor sheave (B).

8. 
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   A - Sheave

   Remove drive belt from sheave (A).

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9. Pull out belt from rear of machine.

10. Install new belt in reverse order of removal using the following special instructions:

    • Tighten cap screw at impeller rotor sheave to specifications.
    • Adjust belt tension. (See procedure in this section.)

      Item	Measurement	Specification
      Impeller Rotor Sheave-to-Rotor Cap Screw	Torque	339 N˙m (250 lb-ft)

    
    

    IMPORTANT:

    
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    A - Shield

    When installing the left-hand converging drum shield there should be a 1—6 mm (0.04—0.24 in.) clearance between shield and converging drum.

    Install shield (A). Make sure the clearance between shield and top of converging drum is according to specifications.

    Item	Measurement	Specification
    Shield-to-Converging Drum—	Distance	1—6 mm (0.04—0.24 in.)

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