Dynabrade 40324 User manual

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

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.

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.
96346 Bearing Separator

5. Use the 96211 Bearing Removal Tool and the arbor press to remove the 01015 Bearing
from the rear bearing plate.
96346 Bearing Separator
96211 Bearing Removal Tool

6. Fasten the 01120 Rotor in the vise with aluminum or bronze jaws and use an adjustable
wrench to remove the 04081 Rotor Nut. Turn counterclockwise.
Remove the 01007 Bearing, 01008 Bearing Plate, shims, and 01010 Spacer.
Motor Disassembly Completed.
Clean and inspect parts before assembling.

Assembly Instructions - 0.5 hp. Dynafile II
Motor Assembly:
1. Install the 01010 Spacer onto the rotor.
Install .003" (~0.80 mm) shim thickness into the 01008 Front Bearing Plate.
Install the 01007 Bearing into the front bearing plate.
Install the bearing and plate onto the rotor.
.003" (~0.80 mm)
shim thickness
01010 Spacer

2. By hand, install the 04081 Rotor Nut. Pull the front bearing plate forward to take movement
out of the bearing. Check the clearance between the rotor and plate.
Use a .001" (~0.03 mm) thick feeler gauge. Notice: The clearance should be
.001"-.0015" (~0.03-0.04 mm). If the rotor/plate clearance needs adjustment, repeat
steps 1 and 2. Remove or add shims as required.
.001"-.0015"
(~0.03-0.04 mm)

3. Use a 17 mm socket or crowfoot, and a torque wrench to tighten the 04081 Rotor Nut.
(T to 17 N•m/~150 in. lbs.)
T to 17 N•m/~150 in. lbs.