Dynabrade 51813 Bezpieczeństwo, obsługa i konserwacja - Strona 5
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Disassembly/Assembly Instructions - Pencil Grinder
(ALL THREADS ARE RIGHT HAND)
Collet Disassembly/Assembly Instructions
To Disassemble:
1. Slide 51789 O-Ring away from holes in motor housing.
2. Turn 53580 Drive Shaft until the holes in motor housing and drive shaft are aligned.
3. Slip the 51694 Shaft Lock Pin provided through both holes to lock the drive shaft.
4. Use 95731 8mm open end wrench, to remove the 51657 Collet Cap.
5. Remove 51659, 51673, 51674 or 51780 Insert.
To Assemble:
1. To reduce bit runout and sticking, thoroughly clean, inspect, and polish as necessary the 51657 Collet Cap, 51659, 51673, 51674 or 51780 Insert.
2. Turn drive shaft until the holes in motor housing and drive shaft are aligned.
3. Slip the 51694 Shaft Lock Pin through both holes to lock the drive shaft.
4. Place 51659, 51673, 51674 or 51780 Insert in end of 53580 Drive Shaft. It should be a very clean fit that does not stick. If it sticks go back
to step 1 above.
5. Screw on 51657 Collet Cap.
6. Slide 51789 O-Ring over holes in motor housing.
Motor Disassembly/Assembly Instructions
To Disassemble:
1. Remove 53589 Air Hose by cutting just behind the barbs on 58581 Turbine Cover.
2. Remove 53586 Jam Nut, 53582 ON/OFF Valve, 53588 Muffler, o-ring and washer.
3. Using an adjustable face pin style spanner wrench in the exhaust holes and applying a small amount of heat to the threaded area on the low setting
from a heat gun, unscrew the 58581 Turbine Cover. Excessive heat will damage the turbine.
4. Using 96408 Special Repair Tool and 51694 Shaft Lock Pin unscrew the motor 51655 Top Plate. A small amount of heat may be required at this
point as well. It is necessary to slide 51789 O-Ring out of the groove in the motor housing to access the shaft lock pin holes.
5. Remove the 51678 Turbine, and 51656 Turbine Base.
6. Clean all parts thoroughly. Inspect 51678 Turbine for cracks and missing molded drive pins. Inspect 51655 Top Plate and 51656 Turbine
Base for flatness.
To Assemble:
1. Place 51678 Turbine on the flange on 51656 Turbine Base.
2. Place 51655 Top Plate on 51678 Turbine, inserting the turbine drive pins in the drive slots.
3. Turn 53580 Drive Shaft until the holes in motor housing and drive shaft are aligned.
4. Slip the 51694 Shaft Lock Pin through both holes to lock the drive shaft.
5. Apply a small quantity of Loctite
6. Make sure that the drive pins are still engaged in the drive slots. Torque the motor assembly onto drive shaft to 4.5 N•m (40 lb.-in.), using 96408
Special Repair Tool.
7. Apply a small quantity of Loctite
8. Replace 95523 O-Ring, 53588 Muffler, 53582 ON/OFF Valve, another 95523 O-Ring and 53587 Washer. Add Loctite
Hex Nut and tighten finger tight, so that ON/OFF Valve can be rotated.
9. Push hose firmly onto turbine cover beyond all barbs.
10. Push 51789 O-Ring into place in groove on extension of motor housing.
Bearing Replacement Instructions
To Remove:
1. Remove 51657 Collet Cap as in Collet Assembly/Disassembly above.
2. Unscrew 53584 Collet Guard. Use of a heat gun on the low setting may be necessary to soften the thread locking compound.
3. Remove 51548 Bearing Retainer and 94984 Debris Eliminator using 96407 Special Repair Tool.
4. Remove the turbine cover per Motor Disassembly/Assembly Instructions above.
5. Press 53580 Drive Shaft and motor assembly out the rear of the tool.
6. Press 51686 Upper Ceramic Bearing off the drive shaft.
7. Push the 51685 Lower Ceramic Bearing forward out of motor housing.
8. Discard bearings, do not reuse.
To Install:
1. As these are special ceramic bearings, use only Dynabrade replacement bearings.
2. Make sure that the new 51686 Upper Ceramic Bearing is a slip fit in motor housing. If not, lightly clean the bearing bore with a very fine abrasive cloth.
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#222 or equivalent to the 51655 Top Plate threads.
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#567 or equivalent to the 53581 Turbine Cover and torque to 8.5 N•m (75 lb.-in.).
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#242 or equivalent to 53586
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