Dynabrade 52672 Panduan Pengoperasian dan Pemeliharaan - Halaman 5
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Disassembly Instructions - 1 Hp Slow Speed Extension Die Grinder
mportant: Manufacturer's warranty is void if tool is disassembled before warranty expires. Please refer to parts complete tool
I
assembly for part identification.
Disconnect tool from power source before tool repair.
Motor Disassembly:
1. Remove 50012 Collet Cap and collet insert.
2. Using 51989 Repair Collar or padded vise, secure front end of housing using machined flats on the silver ring.
3. Remove 51952 Extension Handle from 53695 Gear Casing (turn counterclockwise).
4. Slide 51982 Bearing Spacer and spindle assembly through rear of 51952 Extension Handle.
5. Remove 96512 Retaining Ring from front of extension handle and remove 51956 Felt Seal.
6. Secure 51955 Spindle at wrench flats, and remove 50011 Collet Body and 51935 Coupler.
7. Secure 01007 Bearing and press 51955 Spindle through both 01007 Bearings.
8. Secure 54520 Bearing and press 51955 Spindle through 54520 Bearing.
9. Remove 53695 Gear Casing (twist counterclockwise).
10. Secure planetary carrier using 53698 Wrench (order separately) and remove 51953 Coupling (turn counterclockwise).
11. Remove 04014 Set Screw(s) and pull planetary carrier assembly(s) from planetary gear casing.
12. Press planetary carrier assembly through 54520 Bearing.
13. Remove 96498 Wave Spring.
14. Remove ring gear and press retainer pins and gears from planetary carrier.
15. Remove remaining tool assembly from vise.
16. Pull motor assembly from housing assembly.
17. Remove governor assembly by using a slotted screw driver (LEFT HAND thread, turn counterclockwise).
18. Secure 51925 Cylinder and place a 1/8" (3 mm) drift pin to the base of the internal thread and press the rotor from the 02057 Rear Bearing.
19. Slide 02057 Rear Bearing from 51923 Rear Bearing Plate.
20. Remove 51925 Cylinder and 51926 Blades.
21. Press rotor through 54520 Bearing, 51922 Front Bearing Plate and 51927 Rotor Spacer.
22. 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 (turn 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" (2.4 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 - 1 Hp Slow Speed Extension Die Grinder
Motor Assembly:
Important: Be sure parts are clean and in good repair before assembling. Follow grease, oil and torque specifications.
1. Place rotor into padded vise with spline 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. Press bearing/bearing plate assembly onto rotor, torque 51935 Extension Coupler onto rotor shaft to 17 N•m (150 lb.-in.).
6. Check clearance between rotor and front bearing plate by using a .001" feeler gauge. Clarence should be between .001" – .0015".
Adjust clearance by repeating steps 4 and 5 with different shims if necessary.
7. Once proper rotor gap clarence is achieved, install well lubricated 51926 Blades (4) into rotor slots. Dynabrade recommends lubricating blades
with 95842 Air Lube.
8. Install 51925 Cylinder over rotor and front plate raised boss. Align coiled pin on front to cylinder slot.
9. 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.
10. Peel backing off 51924 Gasket and apply it firmly in place onto 51923 Rear Bearing Plate.
11. 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 line up with inlet slot on cylinder. Flip cylinder end to end and
repeat step 8 for correct assembly.
(continued on next page)
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