Walker DB6680 Replacing/Repairing, Dozer Blade Cutting Edge Replacement Rotary Broom Brush

Models: IH6620 DB6680 DB6660 SB6670 RB6650

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Maintenance Instructions

REPLACING/REPAIRING

REPLACING/REPAIRING

WARNING

To prevent accidental engine starting when replacing parts or repairing the machine, remove the key from the ignition switch and disconnect the fuel solenoid wire [diesel engines] or the spark plug wire(s) [gasoline engines].

CAUTION

ALWAYS use genuine factory replacement parts. Substitute parts CAN result in prod- uct malfunction and possible injury to the operator and/or others.

Dozer Blade Cutting Edge

NOTE: The cutting edge of the dozer blade is re- versible and needs to be replaced only when both the top and bottom edges have worn.

Replace the dozer blade cutting edge as follows:

1.Remove the six (6) 5/16-NC hex nuts and 5/16 in. lock washers from the rear of the blade, behind the cutting edge. Remove the six (6) 5/16-NC x 1 in. carriage bolts from the front cut- ting edge.

2.If only one edge of the blade is dull or nicked, rotate the blade 180 degrees. (The sharp edge should now be at the bottom.) Reinstall the cut- ting edge onto the dozer blade by reversing the removal procedure.

3.If both edges are dull or nicked, remove the cutting edge and install a new one by reversing the removal procedure.

Reversible

Cutting Edge

Dozer Blade Cutting Edge Replacement

Rotary Broom Brush

1.Stop the tractor engine, set the parking brake and remove the ignition key.

2.Lift the broom head from the front approximate- ly 7 to 8 inches (18 to 20 cm) from the ground.

3.Place two (2) wooden blocks, one on each side, under the rear of the broom housing and gently lower the broom head.

Wooden

Block

Support Rear of Broom Housing

4.Remove the two (2) bolts and the chain guard.

5.Loosen the bolt securing the chain idler so that the chain can be removed from the sprocket.

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Image 56
Walker DB6680 Replacing/Repairing, Dozer Blade Cutting Edge Replacement Rotary Broom Brush, Support Rear of Broom Housing