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T ECHNICAL INFORMATION
Models No. 6911D/DW
NEW TOOL
Description Cordless Impact Driver 57 mm (2-1/4")
CONCEPTION AND MAIN APPLICATIONS
This is a 12V powerful Cordless Impact river with higher
torque for increasing the fastening efficiency.
230 mm (9")
It is equipped with durable aluminum die-cast hammer case,
however compact and light weight (1.8 Kg. ; 4.0 lbs).
The variations of this model are as follows.(1.8 Kg. ; 4.0 lbs)
Model No. Battery Charger
6911D NiCd.1200 Without
6911DW NiCd.1200 with DC1200
79 mm (3-1/8")
221 mm (8-3/4")
Specification
Motor DC Magnet motor 12 V
No load speed 0 - 1,800 rpm.
Blows per min. 0 - 2,500bpm.
Max. fastening torque 1,000 Kg.cm (72.3 ft.lbs)
Machine screw 4mm - 8mm (5/32" - 5/16")
Standard bolt 5mm - 12mm (3/16" - 1/2")
High tensile bolt 5mm - 10mm (3/16" - 3/8")
Net weight 1.8 Kg. ( 4.0 lbs)
Standard equipment
NiCd Battery cartridge 1200,
Philips bits 2-65, 3-65,
Bit piece
Fast charger DC1200 (only for Model 6911DW)
Plastic carrying case (only for Model 6911DW)
The standard equipment for the machine shown may doffer from country to country.
Optional accessories
NiCd Battery cartridge 1200,
Various size of Philips bits
Various size of socket bits
Bit piece,
Fast charger DC1201
Feature and benefits
1. Very strong fastening power from compact and light weight body equipped with 12V DC motor.
2. Durable aluminum die-cast hammer case.
3. Variable speed for getting exact starting point you want.
4. Bit holder with slide sleeve for easy and quick change of driver bits.
5. Reversible switch for removing screws or bolts.
6. Electric brake for fastening convenience.
7. With hand hand strap.
Repair Hammer case
< 1 > Dismounting of Housing
Take off hammer case and O ring from housing.
Then, the housing can be removed. O ring
Housing
< 2 > Removing bit holder on anvil
3
The structure of bit holder is as Figure 2 illustrated below.
Take off ring spring from the groove of anvil.
Then, sleeve, compression spring and flat washer
can be removed from anvil.
Anvil can be dismounted from hammer case after Fig. 1
removing bit holder.
Sleeve Anvil
Ring spring Flat washer
Compression Steel ball
spring
Bit holder section
Groove of anvil for ring spring
Fig. 2
< 3 > Assembling flat washer between hammer case and
sliding part of anvil
Pay attention to the face of flat washer, when installing it
between hammer case and anvil.
The shaved side of flat washer has to face to the rotating part of anvil
as illustrated in Fig. 3. Hammer case
Flat washer
Shaved part
of flat washer Anvil
Fig. 3
< 4 > Removing hammer
Press down hammer with arbor press.
Spindle
Adjust the 4 concaves of hammer to cam groove top
Cam groove top
of spindle by turning gear, and
take off steel ball from spindle. Concave
Concave
(Note)
* Steel ball can not be taken off without adjusting
4 concaves of hammer to top of cam groove Hammer
of spindle.
Concave
Gear
< 5 > Assembling spindle complete to housing
Flat washer and rubber washer which
are to be assembled between ball bearing Housing
and spur gear , have to be assembled Flat washer
Rubber washer Ball bearing
to housing as a set.
Spindle
Spur gear
< 6 > Tightening tapping screws Flat washer
Tapping screws have to be tightened after assembling
hammer case to housing with the following torque. Rubber washer
Adjusted torque on
Part's name torque wrench (tightening tool)
Housing set 12 - 16 Kgcm (0.9 - 1.2 ft.lbs)
Hammer case 18 - 22 Kgcm (1.3 - 1.6 ft.lbs)
Circuit diagram
( )
DC motor
Lead wire (Red)
( )
Lead wire (Black)
Switch
Lead wire (Black)
Lead wire (Red)
( )
( )
Battery holder