Dynabrade 51520 Disassembly/Assembly Download Page 7 | Manualshive

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Right Angle Gear Disassembly:

1.

Install

95492

Screws (5/16"-18 SHC) in two handle bosses on housing.

Fasten

51545

Housing in vise with spindle pointing up.

Use a

HEAT GUN

to warm housing.

Use an adjustable pin spanner wrench to remove

51551

Spindle Retainer. Turn

clockwise.

Left Hand Thread

.

HEAT

GUN

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Summary of Contents for 51520

Page 1: ... Notice Shut off air supply and depress throttle lever to deplete air Disconnect tool from air supply hose Shut off water supply faucet and disconnect Remove all accessories abrasive product backup disc and flanges from tool Motor Disassembly 1 Push against collar of 96227 Fitting and pull 95579 Water Line tubing from fitting ...

Page 2: ...en 95492 Screws in vise to hold tool with 51546 Valve Body pointing up Use a 3 mm hex key to remove 96296 95916 Screws along with 01211 Lock Washers Turn counterclockwise Carefully remove valve body assembly spacers gaskets and o rings Set aside and save parts 3 mm hex key ...

Page 3: ...3 Remove motor form housing ...

Page 4: ...sten 96346 Bearing Separator 2 around 01028 Cylinder Place assembly in 96232 Arbor Press 2 with pinion pointing down Use a Ø 1 4 drive punch to push 02373 Rotor out of 02649 Bearing 96346 Bearing Separator ...

Page 5: ...5 NOTICE In the same way use bearing separator arbor press and 96213 Bearing Removal Tool to remove 02649 Bearing from 01732 Rear Bearing Plate Save parts 96213 Bearing Removal Tool ...

Page 6: ...aws with pinion pointing up Use an adjustable hook spanner wrench to remove 51513 Pinion Gear Turn counterclockwise Remove front bearing plate spacer and shims Motor disassembly completed Clean and inspect parts for wear or damage Save and reuse good parts ...

Page 7: ...Screws 5 16 18 SHC in two handle bosses on housing Fasten 51545 Housing in vise with spindle pointing up Use a HEAT GUN to warm housing Use an adjustable pin spanner wrench to remove 51551 Spindle Retainer Turn clockwise Left Hand Thread HEAT GUN ...

Page 8: ...2 Loosen vise and remove housing Remove 96584 O Ring Remove spindle and bevel gear assembly Remove 98243 Wave Spring ...

Page 9: ...g IMPORTANT Inspect 95913 Seals and 51550 Spindle Replace worn parts NOTICE Loctite 380 is used to retain 95913 Seals in 51551 Spindle Retainer Acetone can be used to soften adhesive and remove seals SEE Right Angle Gear Assembly Right angle gear disassembly completed Clean and inspect all parts for wear or damage Only reuse good parts Notice To disassemble and assemble muffler and valve component...

Page 10: ...ns Wet Stone Polisher Motor Assembly 1 Install 01010 Spacer onto rotor Install 003 0 08 mm shim thickness into 02375 Front Bearing Plate Install 01007 Bearing into front bearing plate Install bearing and plate onto rotor ...

Page 11: ... Push down on front bearing plate Use a 001 0 03 mm thick feeler gauge to check clearance between rotor and plate Notice Clearance should be 001 0015 0 03 0 04 mm If rotor plate clearance needs further adjustment repeat steps 1 and 2 Remove or add shims as necessary 001 0015 0 03 0 04 mm ...

Page 12: ...3 Fasten 02373 Rotor in vise with aluminum or bronze jaws Use an adjustable hook spanner wrench to tighten 51513 Pinion Gear Torque to 17 N m 150 lbs in Torque to 17 N m 150 lbs in ...

Page 13: ...4 Apply 95842 Dynabrade Air Lube or equivalent to 01185 Vanes Install vanes into rotor OIL ...

Page 14: ...5 Use RAISED OUTSIDE DIAMETER of 96240 Bearing Press Tool to install 02649 Bearing into 01732 Rear Bearing Plate 96240 Bearing Press Tool ...

Page 15: ...Tool and arbor press to install 02649 Bearing and rear bearing plate onto rotor Carefully press bearing and plate down until plate just touches cylinder This will produce a close fit between bearing plates and cylinder JUST TOUCH 96240 Bearing Press Tool ...

Page 16: ...7 Use a HEAT GUN to warm and expand housing HEAT GUN ...

Page 17: ...8 Use 51560 Spacer as a guide to position and install air motor 51560 Spacer ...

Page 18: ...9 Install 01024 O Ring and 51552 Gasket 01024 O Ring 51552 Gasket ...

Page 19: ...10 Install 51560 Spacer 51569 Spacer 01024 O Ring 51113 Gasket 51568 Spacer 51569 Spacer 01024 O Ring 51113 Gasket 51568 Spacer 51560 Spacer ...

Page 20: ...tion of air motor Connect tool air inlet to an air supply that delivers a maximum of 90 PSIG 6 2 Bar operating air pressure If motor operates smooth and regular continue with right angle gear assembly If motor does not operate or performance is erratic disconnect tool and correct problem before continuing Motor assembly completed Torque to 4 5 N m 40 lbs in ...

Page 21: ...Right Angle Gear Assembly 1 Notice To remove 95913 Seals Soak 51551 Spindle Retainer with old seals in a closed container of acetone overnight Seals will be released from retainer ...

Page 22: ...l so that open side will face toward inside of 51545 Housing To install seal use Ø 1 38 mm press tool against OUTSIDE EDGE of seal Use 96232 Arbor Press to push seal all the way into 51551 Spindle Retainer Ø 1 38 mm press tool ...

Page 23: ...install second seal use acetone to clean inside Ø of 51551 Spindle Retainer and outside Ø of 95913 Seal Apply a bead of Loctite 380 Black Max or equivalent to outside Ø of seal ACETONE Loctite 380 Black Max ...

Page 24: ...g in toward first seal Use Ø 111 16 43 mm press tool FLAT against seal Make seal level with surface of 51551 Spindle Retainer Allow 30 minutes for adhesive to cure Apply a small amount of 95848 Gear Oil to lip of each seal LEVEL Apply 95848 Gear Oil ...

Page 25: ...5 Use deep well socket with Ø outside 1 0781 27 mm and arbor press Install 02685 Bearing and 51514 Gear Ø outside 1 0781 27 mm ...

Page 26: ... Install 53608 Wick Use RAISED INSIDE DIAMETER of 96242 Bearing Press Tool to install 02057 Bearing Notice Make bearing level with end of spindle Saturate using 95848 Gear Oil Press bearing level with end of spindle Use 96242 Bearing Press Tool ...

Page 27: ...ring in housing Use one to two 96554 Shims 003 006 or 0 08 0 15 mm from 96570 Shim Pack and install into housing By eye line up notch in 53608 Wick with lobe in housing Carefully install spindle assembly Install 96564 O Ring ...

Page 28: ...ds on 51551 Spindle Retainer Carefully install spindle retainer so as not to damage seals Use an adjustable pin spanner wrench to fasten spindle retainer Turn counterclockwise Left Hand Thread Torque to 23 N m 200 lbs in Torque to 23 N m 200 lbs in ...

Page 29: ...eth Add or remove shims to adjust the correct gear backlash Right angle gear assembly completed Important Check operation of air tool Initially use 95541 Lubricant Gun to apply three plunges of 95848 Gear Oil through 01041 Lubricant Fitting Continue to apply three plunges of gear oil after every eight hours of use Refer to the tool parts page or manual and follow directions for checking RPM before...

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