Walker MT Owner's Manual

Contents

Maintenance Instructions ADJUSTMENTS76Use the following procedures to check and adjustclutch disengagement and brake action:Stop Block Eccentric Adjustment - Step 1Use the stop block attached to PTO belt tightenerarm to set the bottom position of the clutch idler pul-ley in the disengaged position. The stop blockshould contact the chassis to stop the clutch idlerpulley from moving further down in the disengagedposition. If the stop block is not contacting thechassis 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 allowfour adjustment positions from 5/16 in. (8 mm) to11/16 in. (17 mm).PTO Belt Tightener Stop Block AdjustmentsClutch Idler Pulley Travel Adjustment - Step 2Adjust the stop block to give 1 in. (25 mm) to 1-1/2in. (38 mm) pulley travel from “clutch engaged” to“clutch disengaged”. To check and adjust the pulleytravel, 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 thepulley travel is excessive and the bolt develops toomuch slack, the belt will derail when disengaged.Clutch Idler Pulley Travel AdjustmentBlade Brake Band Adjustment - Step 3After 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 approximately1/8 in. (3 mm) between the PTO belt tightenerstop block and chassis. If there are not enoughthreads on the brake band for adjustment,lengthen the brake actuator rod.Blade Brake Band Adjustment11/16 in.(17 mm)9/16 in.(14 mm)7/16 in.(11 mm)5/16 in.(8 mm)EngageDisengagePulleyTravel1 in. to 1-1/2 in.(25 mm to 38 mm)Stop BlockContacting FrameStopBlockBrake ActuatorRodBlade Brake BandAdjustment Nut