Dynabrade 52298 Handmatig - Pagina 3

Blader online of download pdf Handmatig voor {categorie_naam} Dynabrade 52298. Dynabrade 52298 4 pagina's. Hp/short shank/rear exhaust die grinder

Pagina afdrukken

Disassembly/Assembly Instructions-.7 Hp Rear 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.

Motor Disassembly:

1. Disconnect tool from power source.

2. Secure air tool in vise using 52296 Repair Collar. Remove Collet Cap and Collet Insert.

3. With an open-end wrench remove 04034 Rear Exhaust Cover by turning counter-clockwise.

4. Pull motor assembly out of housing.

5. Press rotor from 01743 Rear Bearing. Press 02649 Bearing from bearing plate.

6. Remove 01028 Cylinder, blades (4) and 01010 Spacer from rotor. Note: 01007 Bearing, 01008 Front Bearing Plate and spacer are a slip fit onto rotor.

Optional: To disassemble the valve body from the motor housing, peel back 01558 Collar to expose 01461 Lock Nut. Unscrew lock nut/valve body from

housing (left hand threads).

Motor Disassembly Complete.

Valve Body Disassembly:

1. Position valve body in vise using 52296 Repair Collar with air inlet facing up.

2. Remove air fitting by securing 94523 Inlet Adapter with a wrench and twist air fitting from inlet adapter. Important: 94523 Inlet Adapter must be secured

before attempting to remove air fitting to avoid damaging valve body housing.

3. Remove 94523 Inlet Adapter.

4. Remove 95711 Retaining Ring from inlet adapter and separate 94521 Muffler Base from 94522 Muffler Cap. Remove sintered muffler and felt muffler.

5. Remove air control ring from valve body. Using needle nose pliers, remove 01468 Spring, 01472 Tip Valve and 01464 Seal.

6. Using a 2.5 mm drift pin, tap 12132 Pin from housing and remove throttle lever.

7. Remove 95558 Retaining Ring. Push 01469 Regulator from valve body.

Disassembly Complete.

Motor Assembly:

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

1. Place rotor in padded vise with a threaded spindle facing upwards.

2. Slip 01010 Spacer onto rotor.

3. Place a .002" shim into front bearing plate as an initial spacing and slip 01007 Bearing into plate. Note: 01121 Shim Pack contains .001" and .002" shims.

4. Install bearing/bearing plate assembly onto rotor.

5. Tighten 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 01185 Blades (4/pkg) into rotor slots. Dynabrade Air Lube P/N 95842 is recommended.

8. Install cylinder over rotor. Be sure air inlet holes of cylinder face away from bearing plate.

9. Press 02649 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. 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. A loose fit will not achieve the proper preload of motor bearings.

10. Secure motor housing in padded vise so motor cavity faces upwards.

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

12. Apply a small amount of Loctite

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.

Valve Body Assembly:

1. Insert 01469 Regulator with o-rings and valve stem in place into valve body. Secure with 95558 Retaining Ring.

2. Secure valve body in vise using 52296 Repair Collar with air inlet facing upwards. Insert 01464 Seal.

3. Line up hole in valve stem with hole in 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 towards tip valve).

4. Assemble sintered muffler and felt muffler together and place in 94522 Muffler Cap. Install 94521 Muffler Base onto muffler cap.

5. Install 95438 O-Ring into groove on muffler base. Place 95375 O-Ring and 94526 Spacer into recessed area of muffler cap.

6. Slip 94523 Inlet Adapter through muffler assembly and install 95711 Retainer Ring into groove on inlet adapter.

7. Install air control ring into valve body housing.

8. Apply Loctite

#567 Sealant to threads of 94523 Inlet Adapter and install entire muffler assembly onto valve body (torque 23.0 N•m/200 in. - lbs.).

9. Replace air fitting. Secure inlet adapter with a wrench before tightening air fitting. Install throttle lever and 12132 Pin.

Notice: To adjust throttle body orientation for a rear exhaust tool.

1. Use 52296 Repair Collar to secure valve body in vise with 01739 Housing facing up.

2. Peel down 01558 Collar to expose the hex portion of 01461 Lock Nut.

#567 sealant to threads and install 04034 Rear Exhaust Cover onto motor housing (torque 34 N•m/300 in. - lbs.).

(continued on next page.)