Dynabrade 40324, 40321, 40320, 40326, 40335 Disassembly & Assembly Instructions

Disassembly Instructions - 0.5 hp. Dynafile II

Models: 40320, 40321, 40324, 40326, 40330, 40335

Important: Use these instructions along with the tool parts page or manual.
Notice: Shut off the air supply and depress throttle lever to deplete remaining air.

• Carefully disconnect the tool from the air supply hose. • Remove the abrasive belt and contact
arm assembly. • Use the Special Repair Tools designed for the disassembly and assembly of
this motor.

Motor Disassembly:

Use a 9/64" hex key to
loosen the 95311 Screw.

1. Use a 9/64" hex key to loosen the 95311 Screw. Remove the motor from the belt housing.

2. Carefully hold the 01447 Housing in a vise with aluminum or bronze jaws so that the drive

wheel is pointing up. Notice: Over tightening vise will damage housing.

Insert a 3/16" hex key through drive wheel and into the end of the 01120 Rotor.

Use groove pliers to grasp the drive wheel and remove. Turn counterclockwise.

3. Use the 50971 Lock Ring Wrench to remove the motor lock ring. Turn counterclockwise.

Remove the exhaust control spacer.

Pull the motor out of the housing.

96346 Bearing Separator

4. Fasten the 96346 Bearing Separator (2") around the 01013 Cylinder. Place the separator

and the motor in the 96232 Arbor Press (#2) so that the rotor spindle is pointing down.

Use a 3/16" or 5 mm diameter flat end drive punch to push the rotor out of the 01015

Bearing.

96211 Bearing Removal Tool

96346 Bearing Separator

5. Use the 96211 Bearing Removal Tool and the arbor press to remove the 01015 Bearing

from the rear bearing plate.