Dynabrade 53103 Fonctionnement et entretien - Page 5

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Disassembly/Assembly Instructions

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

A motor tune-up kit is available (P/N 96047) is available to help maintain motor in peak operating condition.

Shroud Disassembly:

1. Remove 31926 Vacuum Hose, loose 53219 Locking Knob and slide 02276 Shroud Base from tool.

2. Loosen 97029 Hose Clamp, remove 52753 Vacuum Shroud from Base and remove 31900 Hose Cuff from Shroud.

Tool Disassembly:

1. Remove drill chuck and 53163 Side Handle.

2. Carefully secure the tool in a vise so that the spindle is pointing up. To avoid damaging the housing do not over tighten the vise.

3. Remove the Cover by turning it clockwise. (Left Hand Thread)

4. Pull the air motor from the housing.

5. Remove the 56028 Muffler Cap. To remove the 57066 Muffler Body use the 96034 12mm Hex Key.

Motor Disassembly:

1. Secure 96346 Bearing Separator (2in.) around the end of the cylinder closest to the rear bearing plate. Place the separator on the table

of the 96232 Arbor Press so that the front of the motor is pointing down.

2. Use a 5/32" dia. flat end drive punch as a press tool and push the rotor out of the 02649 Bearing.

3. Remove the 02649 Bearing from the rear bearing plate with the 96213 Bearing Removal Tool and the arbor press.

4. Front Bearing/Plate Removal:

A. To remove the front bearing/plate from the 04009 Rotor, use the 2 in. bearing separator and the arbor press by pushing the pinion end

of the rotor out of the 01007 Bearing.

B. To remove the front bearing/plate from the 55025 Rotor, the 01007 Bearing and the 01010 Spacer are both a slip fit to the plate and the

rotor.

Planetary Gear Disassembly:

1. To remove the planetary gear assemblies from the cover remove the 04014 Set Screw(s).

2. Push the planetary assembly(ies) out of the cover. (Use the arbor press if needed.)

3. Fasten 96346 Bearing Separator (2in.) between the rear 02552 Bearing(s) and place the separator on the arbor press so that the planetary carrier

spindle/pinion points down. Use the larger end of the 96214 Bearing Removal Tool to press the planetary carrier(s) out of the rear 02552 Bearing.

4. Remove the shafts and gears from the planetary carrier(s).

5. Use the bearing separator to also remove the front 02552 Bearing from the 53164 Planetary Carrier.

6. Carefully secure the planetary carrier in a soft aluminum or bronze jaw so that its' spindle is pointing up. Remove the 04114 Spindle Nut

turning it counterclockwise.

7. Fasten a 2 in. bearing separator between the front 02552 Bearing and the 53165 planetary Carrier. Place these on the arbor press with

the spindle pointing up and press the planetary carrier from the bearing.

8. Remove the 55031 Felt Seal from the cover.

Valve Disassembly:

1. Drive 96025 Pin from housing and pull the valve stem assembly from the housing.

2. To remove the 55051 Valve Stop use a 3/32" dia. flat end drive punch as a press tool, and with the aid of a small separator and an arbor

press, push the 55052.

3. Press 55052 Valve Stem through the second 55051 Valve Stop.

Valve Assembly:

1. Install 96069 Spring and slide 55039 Bushing (with o-rings) onto valve stem/trigger assembly.

2. Apply a small amount of #609 Loctite (or equivalent) onto 55052 Valve Stem and press the first 55051 Valve Stop with its' large end facing

away from the 55039 Bushing.

3. Install 96147 O-Ring onto the second 55051 Valve Stop.

4. Apply a small amount of #609 Loctite (or equivalent) onto 55052 Valve Stem and, press 55051 Valve Stop onto the valve stems that the

o-ringed side is facing the 55041 Valve. Important: Press the second valve stop onto the valve stem only until the large end of the valve

stop is flush with the end of the valve stem.

5. Install the valve assembly into the housing and secure it with the 96055 Pin.

Motor Assembly:

Important: Clean and inspect all parts before assembling.

1. Install 01010 Spacer on the rotor.

2. Install .003" thickness of shims into front bearing plate. Install 01007 Bearing into the front bearing plate.

3. Front Bearing/Plate Installation:

A. Use the 96244 Bearing Press Tool and arbor press to install the 53183 Front Bearing Plate along with 01007 Bearing onto the 04009

Rotor. (Place the tool against the inner race of the bearing.)

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