Makita 9910 Manual

9910
CONCEPTION AND MAIN APPLICATIONS
Specifications
Standard equipment
Optional accessories
The standard equipment for the tools shown may differ from country to country.
Model 9910/9911 are new compact belt sanders using
76mm x 457mm(3"x18") abrasive belt. Their brief benefits are;
Highest capacity at sanding and dust-collection among the same
class sanders.
*Variable speed control by dial for operator's needs
(Model 9911 only)
76mm Belt Sander
Models No.
Description
Dust Bag ------------------------------1 pc.
Abrasive Belt AA80-----------------1 pc. (Model 9910)
Abrasive Belt AA60, 100,150 -----1 pc. (Model 9911)
<Note> The standard equipment may differ from country to country.
Abrasive Belt AA40, 60,80, 100,150,180,240
Clamp Complete
Hose Complete 28-1.5
Hose Complete 28-3.0
Continuous Rating (W)
Voltage (V) Current (A) Cycle (Hz) Input Output Max.
Output(W)
100 6.8 50/60 650 200 640
120 5.6 50/60 650 200 640
220 3.0 50/60 650 200 640
230 3.0 50/60 650 200 640
240 2.9 50/60 650 200 640
9910 270m/min (900ft/min) Belt speed 9911 75-270m/min (250-900ft/min)
Belt size 76mm(3") x 457mm(18")
Net weight 2.6Kg(5.7lbs)
Cord length 2.5m(8.2ft)
132 (5-1/4")
141 (5-1/2")
262 (10-3/8")
New Tool
TECHNICAL INFORMATION

Repair
(1) Replacing of armature
1) Loosen the tapping screw PT4 x25 for mounting the
housing R to remove the housing R, and the fan 60 for
cooling the motor will be exposed.
2) Loosen the tapping screw PT4 x25 for mounting the belt
cover to remove the belt cover.
3) Disconnect the holder cap and then remove the carbon
brush.
4) Remove the synchro belt 6-300 and steel plate.
Housing R
Tapping screw
PT4x25(7 pieces)
Tapping screw
PT4x25(4 pieces) Belt cover
Fan 60

5) Turn the fan 68 in clock wise direction to remove
it while fixing the fan 60 for cooling the motor.
(Note) Since the fan 68 is mounted with anti-clock wise
 screw, turn in clock wise to remove.
6) Remove the scroll plate.
7) Use the resin hammer to slightly hammer the armature shaft from the commutator side to
disconnect the armature.
(2) Disassembling of gear
1) In the same manner as replacing of armature, remove the housing R, belt cover and synchro belt 6-300.
2) Remove the shoe, and the driving roller will be exposed.
3) Use the spanner 10 to fix the hexagon point of pulley
8.5-45.1 and turn the driving roller in the direction
whereby anti-clock wise screw can be loosened, and
either of the pulley 8.5-45.1 or driving roller is
loosened and then removed.
4-A) If the pulley 8.5-45.1 has been successfully removed,
Loosen the 4 pieces of tapping screw PT4x25 for
mounting the bracket to remove the bracket.
A-a)
Insert the lock nut wrench 20 through the two
holes on the helical gear 31, fix the helical gear
31, and then turn the driving roller in a direction
whereby the left-handed screw can be loosened.
A-b)
If the ball bearing 626 and driving roller have been successfully removed, use the resin hammer to
slightly hammer the helical gear 31 complete from the direction of ball bearing 626 mounting side to
remove the helical gear 31 complete.
A-c)
4-B) If the driving roller has been loosened and successfully removed along with the ball bearing 626,
Set the spanner 10 on the hexagon point of pulley 8.5-
45.1, insert the spanner 7 in the two faces on driving
shaft, and then turn them in the direction whereby the
right-handed screw can be loosened, and the pulley
8.5-45.1 can be removed.
B-a)
Loosen the 4 pieces of tapping screw PT4x25 for
mounting the bracket to remove the bracket.
B-b)
Use the resin hammer to slightly hammer the helical gear 31 complete from the direction of ball
bearing 626 mounting side to remove the helical gear 31 complete.
B-c)
Fan 68
Scroll plate
Carbon brush
Holder cap
Steel plate
Synchro belt 6-300
Bracket
Driving roller
Ball bearing 626
Hexagon point
Pulley 8.5-45.1
Spanner 10
Two holes on the
helical gear 31
Driving roller
Ball bearing 626
Driving shaft
Two faces
Spanner 7
Hexagon point
Spanner 10
Pulley 8.5-45.1
Lock nut
wrench 20

(3) Assembling of the rubber sleeve 29
1) Insert the rubber sleeve 29 into the outer circumference
of the driving roller by hands as far as possible.
2) Push the rubber sleeve 29 and insert it while floating the
rubber sleeve 29 by blowing the air into the clearance
between rubber sleeve 29 and driving roller using the air
gun.
Air gun
Rubber sleeve 29
Driving roller

M990
9910
The condenser is not used in some areas.
9911
<100V area>
<Area for other than 100V>
The condenser is not used in some areas.
P1
P1
P1
P1
P2
P1
P2
P2
Circuit drawing
1 2
Cab tire cord Switch Black
Black
Black
BlackBlack
Black
Black
Black
Black
Black
Black
Field
Connector
at closed end
Capasitor
Blue
Yellow
Terminal
board
Heat slinger
Controller
Controller
Cab tire cord
Cab tire cord
Cab tire cord
Switch
Switch
Switch
Field
Field
Field
Field
Capasitor
Capasitor
Capasitor
32
3
4
21
2
3
3
1
2
4