MIRKA mr-312th Instrucciones De Manejo página 9

NOTICE: To receive any expressed or implied warranty, tool must be repaired by an authorized Mirka Service Center. The following
general service instructions provided are for use after completion of the warranty period.
DISASSEMBLY INSTRUCTIONS
Motor Disassembly:
1. Remove the (61) Pad with the (60) 13 mm Wrench.
Take the T-6 Motor Lock Ring Wrench/Spindle Puller
(Included in MPA0928 Kit) and engage it into the tabs
of the (22) Spindle Housing. Rotate the T-6 Motor
Lock Ring Wrench/Spindle Puller counter-clockwise
until it disengages the Spindle Housing from the (44)
Motor Housing. Carefully lift the Spindle Housing up,
while at the same time watching to collect any of the
three (19) Needle Bearings or the three (18) Planet
Gears that may fall out. Remove any remaining Plan-
et Gears and Needle Bearings and set them aside.
Set the Spindle Housing assembly out-of-the-way.
2. For 77mm (3 in.) machines, remove the (16) Motor
Spacer from the (44) Motor Housing.
3. Grasp the Motor Assembly by the exposed end of the
(15 or 17) Motor Shaft and pull out the Motor Assem-
bly from the (44) Motor Housing and set it aside.
4. For 77mm (3 in.) machines, remove the (1) Motor
Spacer from the (44) Motor Housing.
5. Remove the (11) O-Ring from the (10 or 12) Cylinder.
Remove the (2) Retaining Ring from the (15 or 17)
Motor Shaft.
6. Remove the (4) Rear Endplate, (10 or 12) Cylinder, (5
or 7) Rotor and five (6 or 8) Vanes. This may require
gripping the Rear Endplate with a Bearing Separator
(Included in MPA0928 Kit) and lightly pressing the (15
or 17) Motor Shaft through the (3) Bearing and Rear
Endplate. CAUTION: The (9) Key(s) will damage
the (13) Front Endplate if the Motor Shaft is pressed
through without removing the Key(s) first. Remove
the Key(s) then press off the Front Endplate.
7. Remove the (3 and 14) Bearings from the (4 and 13)
Endplates using the T-8 Motor Faceplate Bearing
Removal Tool (Included in MPA0928 Kit). The end
of the tool with the larger diameter is for pressing the
(14) Bearing in the (13) Front Endplate out and the
smaller diameter end is for pressing the (3) Bearing in
the (4) Rear Endplate out.
Spindle Housing Disassembly:
1. Take the (22) Spindle Housing and with a small, thin-
tipped flathead screwdriver pick-out the slotted end of
the (29) Retaining Ring, then continue to peel-out the
Retaining Ring all the way around until it is free from
the groove in the Spindle Housing.
2. Screw the threaded end of the T-6 Motor Lock Ring
Wrench/Spindle Puller (Included in MPA0928 Kit)
into the (23 or 24) Planetary Spindle until hand tight.
NOTE: Make sure the (18) Planet Gears and (19)
Needle Bearings have been removed and set aside.
3. Remove the Planetary Spindle assembly. To ac-
complish this, create moderately sharp outward blows
MIRKA 3,000 RPM 77 mm (3 in.) &
125 mm (5 in.)
TWO-HANDED ROTARY POLISHER
SERVICE INSTRUCTIONS
to the Planetary Spindle, this can be done by taking
the cylindrical part of the T-6 Motor Lock Ring Wrench
(Included in MPA0928 Kit) and sliding it up the handle
away from the Planetary Shaft and hitting the washers
and set screw at the opposite end of the handle.
4. The (20) Ring Gear does not normally have to be
removed. If it is determined that it needs to be re-
placed, press it out from the same side the Planetary
Spindle Assembly is pressed in. Press it out by
pressing on the part of the gear teeth that is exposed
when looking in the bore from the (23 or 24) Planetary
Spindle side.
5. With a small, thin-tipped flathead screwdriver pick-
out the slotted end of the (28) Retaining Ring, then
continue to peel-out the Retaining Ring all the way
around until it is free from the (23 or 24) Planetary
Spindle.
6. Use a Bearing Separator (Included in MPA0928 Kit) to
remove the (27) Bearing, (26) Shim and (25) Bearing
from the (23 or 24) Planetary Spindle.
Housing Disassembly:
1. Unscrew the threaded (30) Plug(s) and the (67) Side
Handle (if used) from the (44) Motor Housing.
2. Remove the (43) Hook and (42) Spacer Rings. (if
used)
3. Remove the (66) Retaining Ring. The (65) Speed
Control (with (64) O-Ring) will now pull straight out
from the (44) Motor Housing. Use an o-ring pick to
remove the O-Ring from the Speed Control.
4. Use a T-20 Torx® driver to unscrew all (41 and 63)
Screws.
5. Remove the (31 and 62) Housings.
6. Remove the (32) Muffler and (33 and 34) Seals from
the (31) Housing.
7. Remove the (39) End Cap.
8. Unscrew the (40) Inlet Bushing from the (39) End
Cap. Remove the (38) Mufflers, (35) Captive Ring,
and (36 and 37) O-Rings from the End Cap.
9. Remove the (56) Exhaust Tubing, (57) Tubing Clamp,
and (58) Inlet Tubing from the motor housing assem-
bly. Separate the Exhaust Tubing, Tubing Clamp, and
Inlet Tubing from each other.
10. Unscrew the three (55) Screws from the (44) Motor
Housing.
11. Remove the (54) NV/CV Exhaust Nozzle and the
(53) Gasket from the (44) Motor Housing.
12. Press out the (45) Spring Pin from the (44) Motor
Housing and remove the (48) Throttle Lever.
13. Remove the (52) Seal Assembly. This component
can become damaged during removal and will need
to be replaced if damaged.
14. Remove the (51) Spring, (50) Valve, (49) Valve Seat,
and the (47) Valve Stem from the (44) Motor Hous-
ing. Use an o-ring pick to remove the o-ring from the
Valve Stem.
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