Dynabrade 15302 Assembly - Page 4

Browse online or download pdf Assembly for Industrial Equipment Dynabrade 15302. Dynabrade 15302 8 pages. Air motor and machine parts

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Important: Manufacturer's warranty is void if tool is disassembled before warranty expires.

Notice: Dynabrade strongly recommends the use of their 52296 Repair Collar (sold separately) during assembly/disassembly

activities. Failure to use this collar will highly increase the risk of damage to the valve body of this tool. Please refer to parts

breakdown for part identification.

To Disassemble:

1. Remove Belt Guard, abrasive belt and contact arm assembly. Loosen 95311 Screw (2) and remove housing assembly and

15338 Handle from air motor.

Motor Disassembly:

Important: Do not over tighten vise or housing could be damaged.

1. Secure tool in a padded vise using 52296 Repair Collar or Padded Jaws.

2. Twist the drive wheel counterclockwise and remove. Using a wrench remove 15315 Exhaust Cover

(twist counterclockwise). Remove silencers.

3. Pull motor assembly from housing. Fasten a bearing separator around the 01028 Cylinder end, nearest the 01743 Rear

Bearing Plate.

4. Place the bearing separator on the table of the arbor press, so that the spindle end of the motor is pointing towards the floor.

5. Using a 3/16" diameter drive punch as a press tool , press the rear portion of the 55025 Rotor out of the

02649 Rear Bearing.

6. Remove 01008 Front Bearing Plate, cylinder, blades(4), and 01010 Spacer from rotor. Note: 01008 Front Bearing Plate,

01007 Front Bearing and 01010 Spacer are a slip fit onto rotor. Press 02649 Rear Bearing from 01743 Rear Bearing Plate.

7. With the motor now disassembled, secure the rotor body in a soft jaw vise. Remove the 01078 Rotor Nut.

Motor Disassembly Complete.

Valve Stem/Body Assembly:

1. Secure motor housing in padded vise using 52296 Repair Collar with air inlet bushing facing upwards.

2. Unscrew 01494 Inlet Bushing from valve body and remove 01564 Air Control Ring.

3. Using needle nose pliers, remove 01468 Spring and 01472 Tip Valve. Pick out 01464 Seal.

4. Using a 2.5 mm dia. drift pin, tap out 12132 Pin and remove throttle lever.

5. Remove 95558 Retaining Ring using retaining ring pliers.

6. Push 01469 Speed Regulator from housing.

7. Remove 01470 Insert assembly and 95523 O-ring.

Housing Assembly:

1. Unscrew 15329 Screw and remove 15312 Belt Guard assembly, abrasive belt and contact arm assembly.

2. Loosen 95311 Screw and remove air motor.

3. Remove 96334 Plug.

4. Remove 15308 Guide post and 96335 Hex nut, this will release 15306 Tension arm and 95426 Spring. (Heating of 96335

Nut may be required). Warning: 15306 Tension Arm is spring loaded, use caution when removing 15308 Guide Post.

5. Remove 15309 Dust Cover, 95217 Screw and 15307 Tension Shaft. (Heating of 95217 Screw may be required).

Motor Assembly:

Important: Make sure parts are clean and in good condition before assembling.

1. Place 55025 Rotor in padded vise with threaded spindle facing upwards. Slip 01010 Spacer onto rotor.

2. Place a .002" shim into 01008 Front Bearing Plate as an initial spacing and slip 01007 Bearing into plate

(Note: Shim Pack contains .001" and .002" shims.)

3. Install bearing/bearing plate assembly onto rotor. Tighten 01078 Rotor Nut onto Rotor (torque to 17 N•m/150 in. - lbs.).

4. Check clearance between rotor and bearing plate by using a .001" feeler gauge. Clearance should be at .001" to .0015".

Adjust clearance by repeating steps1-4 with different shim if necessary.

5. Once proper rotor/gap clearance is achieved, install well lubricated 01185 Blades (4) into rotor slots. Dynabrade

recommends their air lube P/N 95842.

6. Install cylinder over rotor. Be sure air inlet holes of cylinder face away from bearing plate and that the 50767 Pin in the front

bearing plate aligns correctly with the pin-hole in the cylinder.

7. Press 02694 Rear Bearing into 01743 Rear Bearing Plate. Press bearing/bearing plate assembly onto rotor. Be sure that

pin and air inlet holes line-up with pin slot and air inlet holes in cylinder.

Important: Fit must be snug between bearing plates and cylinder. A loose fit will not achieve the proper preload of motor

bearings. If too tight, rotor will not turn freely and must then be lightly tapped at press fit end so it will turn freely while still

maintaining a snug fit.

8. Secure housing in vise using 52296 Repair Cover or padded jaws so motor cavity faces upwards.

Assembly/Disassembly for Dynafile

Continued on page 5.

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