Makita 6305 Manual

Models No.
Description
PRODUCT
TECHNICAL INFORMATION
CONCEPT AND MAIN APPLICATIONS
Specification
Standard equipment
Optional accessories
P 1 / 8
Dimensions: mm (")
Width (W)
Height (H)
Length (L) 346 (13-5/8)
84 (3-5/16)
152 (6)
Note: The standard equipment for the tool shown above may differ by country.
6305
Drill 13mm (1/2")
Chuck key S13 ............ 1
Depth gauge ................ 1
Key holder 12 .............. 1
Grip 36 complete ......... 1
Drills bits (for metal) 1.5, 2, 3, 4, 5, 6
Auger bits 9, 12, 15
Grip 36 assembly
Model 6305 features;
*Rear handle with soft rubber grip, ergonomically designed
for comfortable operation
*Warning lamp that indicates trouble with the cord, the switch
or the motor
Chuck capacity: mm (")
Double insulation
Net weight: kg (lbs)
Power supply cord: m (ft)
No load speed: min-1=rpm.
Wood
1,300
Yes
2 - 13mm (1/16 - 1/2)
30 (1-3/16)
Europe: 2.5 (8.2)
Australia, New Zealand: 2.0 (6.8)
Other countries: 2.5 (8.2)
2.6 (5.7)
Steel
Capacities: mm (") 13 (1/2)
L
H
W
Continuous Rating (W)
Voltage (V) Cycle (Hz) Input Output Max. Output (W)
120
110
4.1 850 450 75050/ 60
3.9 850 450 75050/ 60
220
230
240
Current (A)

P 2 / 8
Repair
[2] LUBRICATION
Put approx. 9g of Makita grease N No.1 in the gear room of Gear housing to protect parts and product from
unusual abrasion.
[3] DISASSEMBLY/ASSEMBLY
[1] NECESSARY REPAIRING TOOLS
CAUTION: Remove the drill bit from the machine for safety before repair/ maintenance !
Code No. Description Use for
[3] -1. Drill Chuck
Fig. 2
DISASSEMBLING
Fig. 1
Fig. 3
1R139 Drill Chuck Extractor Removing Drill chuck
1R269 Bearing Extractor Removing Ball bearing
1R291 Retaining Ring S and R Pliers Removing Ball bearing
1R298 Hex Bar 10 with Square Socket Modular use with No.1R223
1R316 Adjustable Bearing Retainer Wrench Removing Bearing retainer
718024-2 Wrench 43 Removing broken Drill chuck
1R223 Torque Wrench Shaft 20-90 N.m Removing Drill chuck
1R224 Ratchet Head 12.7 Modular use with No.1R223
Note: When removing broken Drill chuck; for instance,
the jaws do not function to tighten the bit, use Wrench 43
(No.781024-2) instead of No.1R223 and 1R224. (Fig. 3)
1) Fix Drill chuck extractor (No.1R139) in vise, and fix Hex bar with 12.7mm square shaft (No.1R298) securely in
Drill chuck. Then fix the machine in No.1R139 with the flat sides of Spindle fit in the notch of No.1R139. (Fig. 1)
2) Attach Ratchet head 12.7 (No.1R224) to Torque wrench shaft 20-90N.m (No.1R223), then fit the ratchet head in
No.1R298. Drill chuck can now be removed from Spindle by turning No.1R223 counterclockwise. (Fig. 2)
No.1R139 17mm
1) Fix the machine in No.1R139. (See Fig. 1.)
2) Preset the fastening torque of No.1R223 to 64 - 74 N.m
(650 - 750kgf.cm).
3) Tighten Drill chuck by turning clockwise with No.1R223
and 1R224. (Refer to Fig. 2.)
No.1R298 No.1R223
No.1R224
ASSEMBLING
No.781024-2
No.1R139
[large view of the circled portion A]
Fit the pin in the key hole.

P 3 / 8
Repair
1) Remove Drill chuck as described in [3] -1.
2) Remove Carbon brush, and unscrew four 5x40 Tapping screws that fasten Gear housing to Motor housing.
3) Separate Gear housing from Gear housing cover complete. Use of Grip complete will make the removal easier.
Attach Grip complete to gear housing, and tap the shaft portion with a plastic hammer. (Fig. 4)
4) Fix Gear housing in vise, and remove Bearing retainer 22-36 by turning clockwise with Adjustable bearing retainer
wrench (No.1R316). (Fig. 5)
5) Remove Retaining ring S-15 from Spindle using Retainer ring S and R pliers.
[3] -2. Spindle and Gear Section
DISASSEMBLING
Motor housing
Gear housing Gear housing cover complete
Fig. 4 Fig. 5
6) As illustrated in Fig. 6, by tapping the edge of the end surface of Gear housing, the following parts can be removed;
Ball bearing 607LLB, Gear complete 12-41, Helical gear 34, Sleeve 15, Woodruff key 4
7) Spindle can now be removed from Gear housing by pressing from the threaded end. (Fig. 7)
Fig. 6 Fig. 7
Fig. 9
Fig. 8
Woodruff Key 4
Sleeve 15
Ball Bearing 607LLB
Helical Gear 34
Gear Complete 12-41
Spindle
Spindle Ball Bearing 6202LLB
ASSEMBLING
Ball Bearing 607LLB
(for Gear Complete 12-41)
Gear Housing
1) Put Ball bearing 607LLB in place into the bearing box portion
of Gear housing. (Fig. 8)
2) Press-fit Spindle into Ball bearing 6202LLB using arbor press.
Then assemble the Spindle to Gear housing.
3) Assemble Bearing retainer 22-36 to Gear housing fixed in vise.
(Fig. 5)
4) Do the following steps to assemble the Gear section.
(Refer to Fig. 6.)
1. Mount Sleeve 15 to Spindle.
2. Put Woodruff key 4 into the key hole on Spindle.
3. Assemble Helical gear 34 to Spindle.
4. Secure Helical gear with Retaining ring S-15.
5) Assemble Gear complete 12-41 to Gear housing while engaging
the small gear of the Gear complete with Helical gear 34.
(Fig. 9)
Note: Do not forget to install Flat washer 6 and Pin 3 in place.
Pin 3
Flat washer 6
Gear Complete
12-41
Bearing retainer
22-36
No.1R316 Fit the pins of No.1R316
in the groove of Bearing
retainer.
TightenLoosen
Gear housing
Grip complete

P 4 / 8
Repair
1) Remove Drill chuck as described in [3] -1.
2) Remove Carbon brush, and unscrew four 5x40 Tapping screws that fasten Gear housing to Motor housing.
3) Separate Gear housing from Gear housing cover complete. (Fig. 4)
4) From Motor housing, separate Gear housing cover complete together with Armature. (Fig. 10)
5) Remove Ball bearing 608LLB from the drive-end of Armature using Bearing extractor (No.1R269). (Fig. 11)
[3] -3. Armature
DISASSEMBLING
Fig. 10 Fig. 11
Fig. 12
ASSEMBLING
Do the reverse of the disassembling steps.
6) Remove Ball bearing 608LLB from the commutator end of
Armature as described below:
The space between the ball bearing and Insulation washer is so
tight that claws of bearing extractor cannot grab the ball bearing.
Therefore, after setting Bearing Extractor (No.1R269) on the
ball bearing, clamp the backs of the claws securely with a water
pump pliers or the like as illustrated in Fig. 12.
Now ball bearing 608LLB can be removed by turning the handle
of No.1R269 clockwise.
Note: Be careful not to damage the commutator.
Gear housing cover complete
Armature
No.1R269 Ball bearing 608LLB
Ball Bearing 608LLB
No.1R269
Water pump pliers
Motor housing

P 5 / 8
[1] Earth Terminal
High Voltage Countries and Areas
where Noise Suppression is Required by Regulation
Support
complete
Noise
suppressor
Warning lamp
Terminal block
Insulated connecter
Earth terminal
Choke coil
Color index of lead wires' sheath
Black
White
Orange
Clear
Heat-shrink tube
Fig. 13
Fig. 14
Circuit diagram
Wiring diagram
Heat-shrink tube
Insert Heat-shrink tube (polyolefin tube) through
the lead wire (clear), and connect Earth terminal
with the lead wire.
Connect Earth terminal with the lead wire (clear) of Noise suppressor as illustrated in Fig. 14.
Terminal
Noise Suppressor
Lead wire (clear)
Cover the terminal-wire connection
with heat shrink tube. Then heat-shrink
the tube using heat-gun or the like.
Switch

P 6 / 8
[2] Motor Housing
High Voltage Countries and Areas
where Noise Suppression is Required by Regulation
Fig. 15
Fig. 16
Wiring diagram
Put Earth terminal in place as illustrated in Fig. 15.
[3] Handle portion of motor Housing
Noise suppressor
Motor Housing
Motor housing viewed from
Polyolefin tube
Lead Wire (clear)
Noise
Suppressor
Earth terminal
Field
Terminal block
Choke Coil
Warning lamp
Lead wire holder
Earth terminal
Motor Housing
Rib
Switch
Be careful not to route the lead wires (black)
of Noise suppressor over the ribs.
Fix the following two lead
wires with the lead wire
holder, and be sure that
they are are tight in this
portion;
* Lead Wire (white)
from Support complete
* Connecting lead wire
(orange) from Brush
holder
Fix lead wire (clear) of Noise suppressor
with the lead wire holders.

P 7 / 8
High Voltage Countries and Areas
where Noise Suppression is Not Required
[1] Line Filter
Support
complete
Warning lamp
Terminal block
Insulated connecter
Color index of lead wires' sheath
Black
White
Blue
Clear
Fig. 17
Circuit diagram
Wiring diagram
As illustrated in Fig. 18, route the two lead wires (white) from
Support complete through Line filter before connecting to Switch
and Terminal block.
Line filter**
*Noise suppressor is not used for some countries.
**Line filter is not used for some countries.
Earth terminalHeat-shrink tube
Noise
suppressor*
Switch
Blue or White
Fig. 18
Line filter
Support Complete
(to Switch and
Terminal block)
[2] Motor Housing
Put Earth terminal in place. (See Fig. 15.)

P 8 / 8
High Voltage Countries and Areas
where Noise Suppression is Not Required
Fig. 19
Wiring diagram
[3] Handle Portion of Motor Housing
Warning lamp
Noise suppressor (if used)
Switch
Line filter (if used)
Rib
Be careful not to route the lead wires (black)
of Noise suppressor over the ribs.
Fix lead wire (clear) of Noise suppressor
with the lead wire holders.
Lead wire holder
Fix the two lead wires
from Support complete
with the lead wire holder,
and be sure that they are
are tight in this portion.
Terminal block