Dynabrade 51820 Podręcznik - Strona 3

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Disassembly/Assembly Instructions - Right-Angle Tools

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

Please refer to parts breakdown for part identification.

Gear Casing Disassembly:

Important: Inlet adapter must be secured before attempting to remove air fitting to avoid damaging composite motor housing.

1. Secure motor housing in vise using 52296 Repair Collar or padded jaws, so that 02052 Right-Angle Head Housing is facing up.

2. Using an adjustable pin wrench turn 02035 Lock Nut counter-clockwise.

3. Remove spindle from 02052 Housing.

4. Using a screw driver, pick wicks (2) out from housing (Note: Wick may already be removed with the spindle.)

5. Using a 34mm crows foot wrench, remove 01461 Lock Nut by turning counter-clockwise.

6. Place 02052 Housing in an arbor press with spindle opening facing down.

7. Using a 9mm drift pin press out 02041 Gear Oil Plate and 02033 Bearing (located on the top of the 02052 Housing).

Motor Disassembly:

1. Remove tool from vise.

2. Pull motor assembly from housing assembly.

3. Disassemble motor assembly by pressing 02037 Rotor from 02696 Rear Bearing. Press 02696 Bearing out of 02676 Rear Bearing Plate.

4. Remove 01476 Cylinder and 01480 Blades.

5. Place 02037 Rotor in a vise with soft jaws and unscrew pinion using a counter-clockwise direction.

6. Slip 01478 Front Bearing Plate off of 02037 Rotor.

7. Remove 01479 Spacer from 02037 Rotor.

8. Remove 02697 Bearing from 01478 Front Bearing Plate.

9. Remove shims from 01478 Front Bearing Plate.

Valve Body Disassembly:

1. Secure motor housing in 52296 Repair Collar or padded jaws with motor opening facing down.

2. Unscrew inlet adapter turning counter-clockwise.

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

4. Resecure housing in vise making sure throttle lever 01448 Throttle Lever and 12132 Pin are accessible.

5. Using a 2.5mm diameter drift pin and hammer, tap 12132 Pin until it falls out of the housing and remove throttle lever.

6. Remove from vise.

7. Remove 95558 Retaining Ring using retaining ring pliers.

8. Push 01469 Speed Regulator from housing.

Gear Casing Assembly:

1. Press 01041 Gear Oil Fitting into 02041 Gear Oil Plate with 01041 Gear Oil Fitting Head

recessed into 02041 Gear Oil Plate.

2. Place 2 drops of #680 Loctite

3. Place 02041 Gear Oil Plate into 02052 Housing as shown.

4. Press 02033 Needle Bearing into 02052 Housing as shown.

Motor Assembly:

Important: Make sure parts have been cleaned and thoroughly inspected for wear and

damage before assembling.

1. Place 02037 Rotor in soft jaw vise with threaded spindle facing upward.

2. Slip 01479 Spacer onto 02037 Rotor.

3. Place a .002" Shim into 01478 Front Bearing Plate as an initial spacing then slip 02697 Bearing

into 01478 Front bearing Plate. Slip assembly onto 02037 Rotor. Tighten pinion onto rotor torque 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

steps 1-3 with different shim if necessary.

5. Once proper rotor gap clearance is achieved, install well lubricated 01480 Blades into 02037 Rotor (use 95842 Dynabrade AIr Lube or equivalent).

6. Install 01476 Cylinder so it rests against the 01478 Bearing Plate (making sure inlet holes of cylinder are in alignment with inlet holes in 02676

Rear Bearing Plate).

7. Press 02696 Bearing into 02676 Rear Bearing Plate. Press these parts onto 02037 Rotor. 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.

8. Secure housing in vise using 52296 Repair Collar or padded jaws so that motor cavity faces upward.

9. Install motor assembly in housing, make sure motor drops all the way into housing. (Note: Align the nodes in side of housing.)

10. Slip 01547 Insulator Collar over 01461 Lock Nut.

(or equivalent) at location below.

(continued on next page)

02052 Housing

02033 Needle Bearing

02041 Gear Oil Plate

01041 Gear Oil Fitting

2 Drops of Loctite