Dynabrade 52200 Handmatig - Pagina 3

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Disassembly/Assembly Instructions - .4 Hp/Front Exhaust

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. Secure air tool in vise using 52296 Repair Collar or padded jaws.

2. Remove collet cap and insert.

3. With an adjustable pin wrench, remove 01498 Exhaust Cover by turning counter-clockwise. Remove air control ring, muffler insert and 01482 Baffle.

4. Pull motor assembly from housing.

5. Reposition motor housing in vise so inlet bushing is facing upward.

6. Unscrew 01494 Inlet Bushing turning counter-clockwise.

7. Using needle nose pliers, remove 01468 Spring, 01472 Tip Valve and 01464 Seal.

8. Resecure housing in vise so throttle lever and 12132 Pin are accessible.

9. Using a 2.5mm diameter drift pin and a hammer, tap 12132 Pin out from housing and remove throttle lever.

10. Remove 95558 Retaining Ring and push 01469 Speed Regulator from housing.

Tool Disassembly Complete.

Motor Disassembly:

1. Press rotor from 02696 Rear Bearing. Press 02696 Bearing from 02673 Rear Bearing Plate.

2. Remove 01435 Collet Body from rotor shaft. Twist collet body counter clockwise from shaft.

3. Remove 01478 Front Bearing Plate, cylinder, blades (4) and 01479 Spacer from rotor. Note: 02649 Bearing is a slip fit into 01478 Front Bearing.

Motor Disassembly Complete.

Motor Assembly:

Important: Be sure parts are clean and in good repair before assembling.

1. Place 01475 Rotor in padded vise with threaded spindle facing upward.

2. Slip 01479 Spacer onto rotor.

3. Place a .002" shim into 01478 Front Bearing Plate as an initial spacing (Note: 54529 Shim Pack contains .001", .002", and .003" shims) and slip

02649 Bearing into plate.

4. Install bearing/bearing plate assembly onto rotor.

5. Tighten 01435 Collet Body onto rotor (torque to 17 N•m/150 in. - lbs.).

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

steps 1-5 with different shim if necessary.

7. Once proper rotor/gap clearance is achieved, install well lubricated 01480 Blades (4) into rotor slots. Dynabrade Air Lube P/N 95842 is recommended

for lubrication.

8. Install cylinder over rotor. Be sure air inlet holes of cylinder face away from bearing plate and that the pin in the front bearing plate aligns correctly

with the pin-hole in the cylinder.

9. Press 02696 Rear Bearing into 02673 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 pre-load of motor bearings. If too tight, rotor will not turn freely. Rotor must then be lightly tapped at press fit end so it will turn freely while still

maintaining a snug fit.

10. Secure housing in vise using 52296 Repair Collar.

11. Install motor assembly into housing. Be sure motor drops all the way into housing.

12. Assemble baffle, muffler insert and air control ring into 01498 Exhaust Cover and install onto motor housing (torque 17 N•m/150 in. - lbs.).

13. Motor adjustment must now be checked. With motor housing still mounted in vise, pull end of rotor and twist (10-15 lbs. force), rotor should turn

freely without drag. If drag or rub is felt, then increase preload or remove shim. Also, push end of rotor and twist (10-15 lbs. force), rotor should

turn freely without drag. If drag or rub is felt, then deload or add shim.

Motor Assembly Complete.

Valve Body Assembly:

1. Insert 01469 Speed Regulator Assembly with 01449 Valve Stem with o-rings installed into housing. Secure with 95558 Retaining Ring.

2. Secure valve body in vise using 52296 Repair Collar with air inlet facing upward.

3. Insert 01464 Seal into housing.

4. Line-up the hole in the 01449 Valve Stem with the hole in the housing (looking past brass bushing). Insert 01472 Tip Valve so that the metal pin passes

through the hole in the valve stem. Install 01468 Spring (small end first).

5. Apply Loctite

#567 PST Pipe Sealant (or equivalent) to threads of 01494 Inlet Adapter and install onto valve body (torque 23.0 N•m/200 in. - lbs.).

6. Install throttle lever and 12132 Pin. Remove from vise.

Tool Assembly Complete. Please allow 30 minutes for adhesives to cure before operating tool.

Important: Motor should now be tested for proper operation at 90 PSIG. If motor does not operate properly or operates at a higher RPM than marked on the

tool, the tool should be serviced to correct the cause before use.

Loctite

is a registered trademark of Loctite Corp.