Walker H27i Operator's Manual

Also see for H27i: Operator's manual Operator's manual

75Maintenance Instructions ADJUSTMENTSClutch Spring Assembly(Spring Uncompressed)Knuckle Joint*NOTE: Factory preset dimensions. Reset tothese dimensions prior to adjustment if components have been disassembled.21/8 in.*(54 mm)6 in.*(152 mm)61/4 in.*(159 mm)Clutch ActuatorLinkPTO Clutch DisengagedClutch Disengagement/Brake ActionWARNINGIt is important to check and maintainblade brake action for safe operation ofthe machine.The declutched or disengaged position of theblade clutch idler pulley is adjustable and is set togive belt release without excessive slack and toapply the blade brake. The blade brake is activatedby the brake band connected to the clutch engagement arm. The brake is designed to stop the bladeswithin five (5) seconds after disengaging the clutch.Use the following procedures to check and adjustclutch disengagement and brake action:Step 1 - Idler Pulley Maximum Travel AdjustmentLoosen the brake band adjustment nut allowingclutch pivot stop arm and stop bolt to make contact(refer to Blade Brake Band Adjustment illustration).1. To check the pulley travel, first engage theclutch, then measure the distance the pulleytravels as the clutch is disengaged and the stoparm contacts the stop bolt.2. Adjust the pivot stop bolt to give 15/8 in. to13/4 in. (41 mm to 44 mm) pulley travel from“clutch engaged” to “clutch disengaged”.NOTE: This adjustment will prevent excessivepulley travel that can cause belts to develop toomuch slack, causing possible belt derailmentupon disengagement.CLUTCH DISENGAGEDCLUTCH ENGAGEDIdler Pulley15/8 in. to 13/4 in.(41 mm to 44 mm)Clutch PivotStop ArmClutch PivotStop BoltBrake EngagementArmClutch Idler Pulley Travel