Walker DB6660 Owner's Manual

Contents

65Maintenance Instructions ADJUSTMENTSReduction Chain Tension AdjustmentDebris Blower Front Gauge WheelAdjust the gauge wheel height according to surfacecondition.IMPORTANT: The air blast nozzle must clearthe ground at all times.1. Remove the linchpin from the wheel pivot shaft.2. Adjust wheel height by placing sleeve spacerseither on the upper or lower side of the wheelpivot bushing. Placing the spacers on the low-er side increases gauge wheel height. Placingthe spacers on the upper side lowers gaugewheel height.3. Reinstall the linchpin when proper gauge wheelheight has been reached.Gauge Wheel Height AdjustmentDebris Blower Drive Belt TensionThe drive belt deflection must be 1/8 in. (3 mm)when 6-1/2 to 9 lbf (29 to 40 N) is applied midwaybetween the two pulleys.Proper Drive Belt Deflection1. Remove the belt guard from the debris blowerhousing by removing the two (2) cover pins andhairpins securing it to the housing.2. Loosen the two (2) nuts and bolts on the blowerpulley bearing support and turn the adjustmentnuts on each side until the required tension isreached. Tighten the fasteners securely and re-install the belt guard by reversing the removalprocedures.DecreaseChain TensionIncreaseChain TensionSupportBox BoltsGauge WheelPivotBushingLinchpin1/8 in. (3 mm)6.5 to 9 lbf(29 to 40 N)