Dynabrade 51570, Руководство по безопасности, эксплуатации и техническому обслуживанию

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Disassembly Instructions
Important: Manufacturer’s warranty is void if tool is disassembled before warranty expires.
Disconnect tool from power source before tool repair.
Orbital Head Disassembly:
1. Slide 61394 Switch Shaft to the random (lock) position. Use the 95823 21mm wrench to hold the orbital head in position and removed the 96188 Screw with the 95049
3/16" hex key.
2. Hold the 18552 Housing in a vise with bronze or aluminum jaws so the orbital head assembly is facing up.
3. Apply localized heat to the three 95235 Screws and use a 9/64" hex key to remove these.
4. Apply localized heat to the 57069 Balancer Shaft and remove the shaft along with the 56052 Bearing.
5. Use the 96346 2" Bearing Separator and the 96232 #2 Arbor Press to remove the 56052 Bearing from the 57069 Balancer Shaft.
6. Apply localized heat to 61398 Locking Pin Bushing and use 96364 Slotted screwdriver to remove.
7. Remove 61935 Switch Spring, 61393 Pin, 61397 Spring, and 61396 Locking Pin Insert.
8. Remove 61394 Switch Shaft from Orbital Head Housing.
9. Use the 95823 21mm Wrench to remove the orbital head from the spindle.
Orbital Head Disassembly Complete.
Right Angle Head Disassembly:
1. Remove side handle and orbital head assembly.
2. Secure 53600 Right Angle Housing, against both side handle bosses, in a padded vise with spindle facing upward.
3. Using 97782 Pin Wrench ( ordered separately) or an adjustable pin wrench, remove 50963 Retainer. ( Left Hand Threads )
4. Remove 50899 Shaft Seal from retainer.
5. Pull spindle and gear assembly from housing.
6. Press spindle through 97679 Bearing and spiral bevel gear.
7. Remove shims and 53608 Wick from right angle housing.
8. Remove 53650 Lock Ring from right angle housing ( Left Hand Threads ) and from 53695 Gear Casing ( Right Hand Threads ).
9. Remove angle head from vise and remove 96325 Bearing by pressing 53649 Gear Oil Plate through housing.
10. Pull pinion gear, bearing and coupler sub-assembly from angle housing.
11. Secure gear, bearing and coupler sub-assembly by the pinion gear wrench flats and remove the 50902 Coupling Insert (twist counterclockwise).
12. Secure 53635 Adapter using an allen wrench and remove pinion gear (twist counterclockwise).
13. Press 53635 Adapter through 01266 Bearing.
14. Remove 04014 Set Screw from 53695 Gear Casing and remove gear casing ( Right Hand Thread ) from motor housing.
15. Slide 53665 Ring Gear from gear casing.
16. Secure planetary carrier using 53698 Wrench ( ordered separately) and remove 51969 Coupling (twist counterclockwise).
17. Press planetary carrier thread end through 54520 Bearing.
18. Remove 96498 Wave Spring.
19. Press 53679 Pins from carrier to remove gears.
Right Angle Head Disassembly Complete.
Motor Disassembly:
1. Remove 53651 Spacer and 96498 Wave Spring from housing assembly.
2. Pull motor assembly from housing.
3. Remove 53620 Motor Adapter with 95438 O-Ring. Note: Step 3 applies to 4,500 RPM models only.
4. Remove governor assembly by using a slotted screwdriver. ( Left Hand Thread )
5. Secure 51925 Cylinder using 96209 Motor Repair Clamp (
ordered separately) and place a 1/8" (3 mm) drift pin to the base of the terminal thread and press
51921 Rotor
from the 02057 Rear Bearing.
6. Slide 02057 Rear Bearing from 51923 Rear Bearing Plate.
7. Remove 51925 Cylinder and 51926 Blades.
9. Press rotor through 54520 Bearing, 51922 Front Bearing Plate and 51927 Rotor Spacer.
10. Slide 54520 Bearing and shims from 51922 Front Bearing Plate.
Motor Disassembly Complete.
Housing Disassembly:
1. Secure housing using 51989 Repair Collar ( see back cover for Optional Accessories).
2. Remove inlet bushing with muffler assembly (twist counterclockwise).
3. Remove 53682 Gasket, 51943 Spring, 96442 O-Ring, 51940 Spacer, 94528 Felt Silencer, 53686 Muffler Cap, 94924 Wave Spring and 53683 Spacer
from 53681 Inlet Bushing.
4. Remove 51944 Tip Valve and 51945 Valve Seat.
5. Remove housing and 51989 Repair Collar and lay collar on bench with flange facing down so it is supporting throttle lever. Place a 3/32" (3 mm) drift pin on
96444 Pin and tap pin thru housing.
6. Remove 51946 Valve Stem Assembly.
7. Remove 96443 O-Ring from 51946 Valve Stem Assembly.
Housing Disassembly Complete.
Assembly Instructions
Motor Assembly:
Important: Be sure parts are clean and in good repair before assembling. Follow grease, oil and torque specifications.
1. Place rotor into a padded vise with gear teeth or male thread facing upwards.
2. Slip 51927 Rotor Spacer over rotor shaft and down against rotor body face.
3. Press 96441 Coiled Pin into 51922 Front Bearing Plate. Make certain, coiled pin does not protrude beyond internal bearing surface.
4. Place a .002" shim into the base of 51922 Front Bearing Plate as an initial spacing and slide 54520 Bearing to the front plate base. Note: 51951 Shim Pack contains
001" and .002" shims.
5. Slip bearing/bearing plate assembly onto rotor. Add one drop of Loctite ® #243 (or equiv.) to 51921 Rotor 3/8-24 male thread and screw 51969 Coupling Nut into place
(Torque to 17 N•m 150 lb.-in.). Note: Step 5 applies to 4,500 RPM models only, omit step 6.
6. Press Bearing/Bearing Plate assembly onto rotor.
7. Check clarence between rotor and front bearing plate by using a .001" feeler gauge. Clarence should be between .001" – .0015". Adjust clarence by repeating steps 4,5
and 6 with different shims if necessary.
8. Once proper rotor gap clarence is achieved, install well lubricated 51926 Blades (4) into rotor slots. Dynabrade recommends lubricating blades with 95842 Air Lube.
9. Install 51925 Cylinder over rotor and front plate raised boss. Align coiled pin on front plate to cylinder slot.
10. Press 96441 Coiled Pin into blind hole on 51923 Rear Bearing Plate. Press (2) 96445 Coiled Pins into the back side of rear bearing plate.
11. Peel backing off 51924 Gasket and apply it firmly in place onto 51923 Rear Bearing Plate.
12. Place 51923 Rear Bearing Plate over rotor mandrel and insert raised boss on rear bearing plate into cylinder diameter, while inserting short coiled pin into cylinder slot.
Be sure inlet slot on rear bearing plate lines up with inlet slot on cylinder. To correct alignment flip cylinder end to end and repeat step 9 for correct assembly.
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