Maintenance Instructions

ADJUSTMENTS

Use the following procedures to check and adjust clutch disengagement and brake action:

Stop Block Eccentric Adjustment - Step 1

Use the stop block attached to PTO belt tightener arm to set the bottom position of the clutch idler pul- ley in the disengaged position. The stop block should contact the chassis to stop the clutch idler pulley from moving further down in the disengaged position. If the stop block is not contacting the chassis in the disengaged position, it will be neces- sary to loosen the brake band adjustment nut. The stop block is an “eccentric” block that will allow four adjustment positions from 5/16 in. (8 mm) to 11/16 in. (17 mm).

11/16 in.

 

9/16 in.

(17 mm)

 

(14 mm)

 

 

 

7/16 in.

 

5/16 in.

(11 mm)

 

(8 mm)

 

 

 

PTO Belt Tightener Stop Block Adjustments

Clutch Idler Pulley Travel Adjustment - Step 2

Adjust the stop block to give 1 in. (25 mm) to 1-1/2 in. (38 mm) pulley travel from “clutch engaged” to “clutch disengaged”. To check and adjust the pulley travel, first engage the clutch, then measure the dis- tance the pulley moves down as the clutch is disen- gaged and the stop block contacts the frame.

NOTE: The importance of this adjustment is if the pulley travel is excessive and the bolt develops too much slack, the belt will derail when disengaged.

Stop

 

 

 

Pulley

Block

 

 

 

Travel

Engage

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Disengage

 

 

 

 

 

 

 

Stop Block

 

 

1 in. to 1-1/2 in.

Contacting Frame

 

 

(25 mm to 38 mm)

 

 

 

 

 

 

Clutch Idler Pulley Travel Adjustment

Blade Brake Band Adjustment - Step 3

After the pulley travel is set, make the following ad- justment as needed:

1.Adjust the blade brake band, using the adjust- ment nut until there is a gap of approximately 1/8 in. (3 mm) between the PTO belt tightener stop block and chassis. If there are not enough threads on the brake band for adjustment, lengthen the brake actuator rod.

Blade Brake Band

Adjustment Nut

Brake Actuator

Rod

Blade Brake Band Adjustment

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Walker MT PTO Belt Tightener Stop Block Adjustments, Clutch Idler Pulley Travel Adjustment, Blade Brake Band Adjustment

MT specifications

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