Service Manuals, User Guides, Schematic Diagrams or docs for : MAKITA 6918D-TE
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T ECHNICAL INFORMATION
Models No. 6918D
PRODUCT
P1/5
Description L
Cordless Impact Wrench
CONCEPTION AND MAIN APPLICATIONS
Model 6918D is powered by 12V battery, and features
12.7mm(1/2") square drive with powerful max. torque at 120N.m.
And more handy and compact.
The variations of this model are as follows.
H
Plastic
Model No. Battery Charger Carrying Case
6918DWA 1222 /1 pc. Ni-Cd, 2.0Ah DC1411 Yes
W
6918DWAE 1222 /2 pcs. Ni-Cd, 2.0Ah DC1411 Yes
6918DWD 1234 /1 pc. Ni-MH, 2.6Ah DC1411 Yes
6918DWDE 1234 /2 pcs. Ni-MH, 2.6Ah DC1411 Yes Dimensions : mm ( " )
6918DWF 1235 /1 pc. Ni-MH, 3.0Ah DC1411 Yes Width ( W ) 94 (3-11/16)
6918DWFE 1235 /2 pcs. Ni-MH, 3.0Ah DC1411 Yes Height ( H ) 231(9-1/8)
Length ( L ) 176 (6-15/16)
Ni-Cd; Nickel Cadmium battery
Ni-MH; Nickel-Metal Hydride battery
Specification
Voltage (V) D/C 12 V
No load speed (min-1=rpm) 0 - 2,300
Impact per minute (min-1=bpm) 0 - 3,000
Square drive : mm ( " ) 12.7 (1/2)
Standard bolt M8 - M14 (5/16" - 9/16")
Capacities
High Tensile bolt M6 - M12 (1/4" - 1/2")
Max. fastening torque 120N.m (1,220kgf.cm, 1,060 in.lbs)
Overall length: mm (") 176 (6-15/16)
Net weight: kg (lbs) 1.6 (3.5 lbs)
Standard equipment
Socket 19 - 38 ................................. 1 pc.
Pin 4 ............................................... 1 pc.
O ring 24 ........................................ 1 pc. ( Except USA, Canada, Mexico)
Battery cover .................................. 1 pc. (for 6918DWA, 6918DWD, 6918DWF)
Battery cover .................................. 2 pcs.(for 6918DWAE, 6918DWDE, 6918DWFE)
< Note > The standard equipment for the tool shown may differ from country to country.
Optional accessories
Various sockets Fast charger DC1439
Battery 1200 Charger DC11411
Battery 1202 Charger DC1801
Battery 1202A Automotive charger DC1422
Battery 1220
Battery 1222
Battery 1233
Battery 1234
Battery 1235
Features and benefits P2/5
Powerful, Max. Torque
6918D 120N.m (1,064in.lbs)
The Lightest Weight in this class
6918D 1.6kg (3.5lbs)
The Shortest Overall Length in this class
6918D 176mm (6-15/16")
Brand-new "type D28" Motor
Lighter and smaller than existing "type D31".
With highly efficient cooling system and
Magnesium Alloy Hammer Case externally accessible brushes.
Push Button for Reversing
Variable Speed Control Switch Palm-fitly, Soft Grip
Set plate can be attached
to this machine for the
battery without push button.
* The set plate is an optional accessory.
Shoulder Strap Available(Optional)
Comparison of products
Model 12V
MAKITA Competitor A
Specification
6918D 6911HD Model A
Square drive : mm (inch) 12.7 (1/2) 12.7 (1/2) 12.7 (1/2)
No load speed(min-1=rpm) 0 ~ 2,300 0 ~ 1,800 0 ~ 2,200
Impact per minute 0 ~ 3,000 0 ~ 2,500 0 ~ 3,000
Max. torque (N.m) 120 120 120
(1,064in.lbs) (1,064in.lbs) (1,064in.lbs)
Externally accessible
brushes YES NO YES
Overall length: mm (inch) 176 (6-15/16) 221 (8-3/4) 181 (7-1/8)
Net weight : kg (lbs) 1.6 (3.5) 1.8 (4.0) 1.7 (3.7)
Standard equipment Socket 19 Socket 19 Socket 19
< Note > The standard equipment for the tool shown may be differ from country to country.
Repair P3/5
< 1 > Removing housing R and L
Remove hammer case from housing R and L.
And then, housing R and L can be removed.
< 2 > Removing hammer
(1) Press down hammer with 1R045: Large gear extractor
by turning the handle.
(2)Adjust the opening for steel ball inserting to the cam groove top of spindle.
Spindle
(3)Take off steel ball 5.6 from spindle. Cam groove top
< Note > 25 steel ball 3.5s are installed in hammer. of spindle
Check the quantity when assembling.
Steel ball 5.6 x 2
1R045 Large gear extractor
Hammer
Opening for steel
ball inserting
Steel ball 3.5 x 25
L
(4) Spur gear 22
L= 85mm
L=105mm
L=130mm
W
W: The maximum opening width
is 170mm.
Fig. 1
(4) Apply MAKITA grease N No.2 to the position No. 1, 2,
3 and 4, when assembling. (1) Spindle
(3) Steel ball 5.6 x 2
Hammer
(2) Steel ball 3.5 x 25
(4) Spur gear 22
Fig. 2
Repair P4/5
< 3 > Removing ball bearing 6901LLB
Internal gear case
Ball bearing 6901LLB
Give a shock by knocking internal gear case Ball bearing 6901LLB can be removed
on the table. from internal gear case by the shock.
Fig. 3
Circuit diagram
FET
(Field Efect Transistor)
Red
Brush holder
M2 M1
Black
Switch
Wiring diagram P5/5
Pass the lead wires as illustrated in Fig.4.
FET
(Field Effective Transistor)
Lead wire (Black) to be
connected to switch has to be passed
under the lead wire (Red).
Lead wire (Red) to be
connected to switch
Rib
FET lied wires
Fig.4
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