Dynabrade 52210 Manual - Halaman 3

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Halaman Cetak

Disassembly/Assembly Instructions - .5 Hp/7°/Front Exhaust

Important: Manufactures warranty is void if tool is disassembled before warranty expires.

Please refer to parts breakdown for part identification.

Secure air tool in a vise equipped with aluminum or bronze jaws.

Remove collet cap and insert.

With an adjustable pin wrench or

silencer and fabric silencer.

Pull motor assembly from housing.

Reposition motor housing in vise so inlet bushing is pointing up.

01494

Unscrew

Inlet Bushing turning counter-clockwise.

Using needle nose pliers, remove

Resecure housing in vise so throttle lever and

Using a 2.5mm diameter drift pin and a hammer, remove

10.

95558

Remove

Retaining Ring and push

Optional:

To disassemble valve body from motor housing, peel back

(left hand threads).

50011

Remove

Collet Body from rotor shaft by inserting 3/16" hex wrench through collet body and into rotor shaft. Twist collet body from shaft.

01008

Remove

Front Bearing Plate, cylinder, blades (4) and

Note: 01007

01008

Bearing,

01015

Press rotor from

Rear Bearing. Press

Motor Disassembly Complete.

Important:

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

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

01010

Slip

Spacer onto rotor.

01008

Place a .002" shim into

Bearing into plate.

Install Bearing/Bearing Plate assembly onto rotor.

50011

Tighten

Collet Body onto rotor (torque to 150 in. - lbs.).

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.

Once proper rotor/gap clearance is achieved, install well lubricated

for lubrication.

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

01015

Press

Rear Bearing into

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.

Insert air control silencer and fabric silencer into

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.

01469

Insert

Speed Regulator Assembly into valve body. Secure with

Secure valve body in vise with air inlet facing up and throttle lever accessible.

01464

Insert

Seal into housing.

01449

Line-up the hole in the

that the metal pin passes through the hole in the valve stem.

01468

Install

Spring (small end towards the tip valve).

Apply a small amount of #567 Loctite (or equivalent) to threads of

12132

Install throttle lever and

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.

Note:

Throttle lever is preset at the factory at an 11:00 o'clock position.

Loctite

is a registered trademark of Loctite Corp.

50791

Lock Ring Wrench, remove

01468

01472

Spring,

Tip Valve and

12132

Pin are accessible.

12132

01469

Speed Regulator from Housing.

01149

Front Bearing Plate and

01015

Bearing from

Front Bearing Plate as an initial spacing (

01014

Rear Bearing Plate. Press bearing/bearing plate assembly onto rotor. Be sure that pin and air inlet holes line-up with pin

04087

Lock Ring and install onto motor housing (torque 150 in. - lbs.).

Valve Stem with the hole in the housing (looking past brass bushing). Using needle nose pliers, insert

Pin. Remove valve body from vise.

04087

Lock Ring by turning counter-clockwise. Remove air control

01464

Seal.

Pin from housing and remove throttle lever.

01558

01462

Collar to expose

01149

Spacer from rotor.

Spacer are a slip fit onto rotor.

01014

Rear Bearing plate.

Note: 01121

Shim Pack contains .001" and .002" shims) and slip

01011

Blades (4) into rotor slots. Dynabrade Air Lube P/N

95558

Retaining Ring.

01494

Inlet Bushing and install into valve body (torque 23 N•m 200 lbs. in.).

Lock Nut. Unscrew lock nut/valve body from housing

01007

95842

is recommended

01472

Tip Valve so