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T ECHNICAL INFORMATION New Tool
For Models 6908D
Description Cordless Impact Driver
CONCEPTIONimpact driver is upgraded version of existing
This 9.6V cordless
AND MAIN APPLICATIONS 171mm (6-3/4")
Model 6903VD and its brief benefits are;
*Faster driving speed
*More number of driving screws from a single charge
232mm (9-1/8")
*Compact design and good balance
*Lower vibration and lower noise
*Motor is more endurable and longer life.
*Carbon brushes can be replaced without dis-assembling housing.
*New switch has wider area of stroke for variable speed so that
speed control becomes easier. ")
m (3
*Reversing switch button located at the top of the handle so that 77m
user can change direction easily leaving the other hand free.
*Battery 9122(2.0Ah) can be removed easily by pushing buttons.
Model Battery(2.0Ah) Fast charger Plastic carrying case
6908DA Battery9122 No No
6908DWA Battery9122 DC1410 Yes
Specifications
Motor DC 9.6V magnet motor
Battery Battery 9122(Ni-Cd, 9.6V, 2.0Ah)
No load speed 0~2200rpm
Impacts per minute 0~2800
Max. tightening torque 800kgf.cm (700in.lbs)
Capacities Machine screw M4~M8(5/32"~5/16")
Standard bolt M4~M12(5/32"~1/2")
High tensile bolt M5~M10(3/16"~3/8")
Coarse thread 22~90mm(7/8"~3-1/2")
Self drilling M4~M6 x 13~45mm(5/32"~1/4" x 1/2"~1-3/4")
Net weight 1.4kg (3.1lbs)
Standard equipment
Phillips Bit 2-65...1pc. Battery Cover...1pc. Set Plate(to use battery without push buttons)...1pc.
Plastic Carrying Case(6908DWA only)...1pc.
Optional accessories
Phillips Bit 2-65, 3-65 Bit Piece
Socket Bit 7-55, 8-55, 10-55, 10-70, 12-86, 13-55, 14-55, 17-55
Keyless Drill Chuck Drill Chuck
Battery 9100, 9102, 9122, 9102A Fast Charger DC1201, DC1209, DC1410
The Standard equipment for the tools shown may differ from country to country.
Features and benefits
See the sheets attached for more information.
Fastest driving speed Most number Ergonomic design
of driving screws among the same for easy operation
class models
Handle shaped
ergonomically
and well balanced
Lowest vibration and loweast noise
Length : 171mm(6-3/4")
More endurable and longer
life motor
Carbon brushes can be replaced
twice till motor is worn out.
Center height
26mm (1-1/32")
Alunminum
Hammer Case
Push button for reversing
direction of rotation
can be actuated easily leaving
the other hand free
Battery 9122(2.0Ah)
New variable speed control switch *can be removed easily by pushing buttons
makes speed control easiest in the world. *New high capacity battery
*Battery without push buttons can be used with
set plate(standard accessory) .
Caution
Please refer to the instruction manual for Model 6908DW.
Repair
(1) How to dismount the housing R and L
Dismount the housing after taking off the hammer case.
Compression spring
(2) How to dismount the bit holder Steel ball
Ring spring Sleeve Groove
Bit holder is constructed as illustrated right.
Take off the ring spring, and then bit holder
can be dismounted.
After dismounting of bit holder, the anvil
can be dismounted from the hammer case.
Flat washer Anvil
Flat washer
(3) How to mount the flat washer Anvil
The flat washer has to be mounted between
hammer case and anvil.
In this case, the chamfered part on the flat washer Chamfered part
has to face the anvil as illustrated right.
Hammer case
Spindle
(4) How to dismount the hammer Swelling part Cum groove top
Adjust the open part for steel ball on hammer
with the top of groove on spindle pressing
the hammer with arbor press.
Then the steel ball can be taken off
in order to dismount the hammer. Hammer
Steel ball
insert entrance
Gear
(5) Fastening of screws
The screws have to be fastened as follows.
Parts to be fastened with screws Fastening Torque
Housing 13-18 kg.cm (11-15 in.lbs)
Hammer case 18-22 kg.cm (15-18 in.lbs)
Motor 6-10 kg.cm (5-8 in.lbs)
Fastening for the hammer case has to be carried out
according to the diagonal order.
Circuit diagram
Red
T+ M1
Spring terminal Switch Direct current motor
T- M2
Black
6908D Circuit diagram
Interchangeability
The following spare parts have can interchangeability with the existing models.
Parts Name Existing models
Sleeve
Compression Spring 13
Flat Washer 12 6903V
Ring Spring 11
Steel Ball 5.6
Hand Strap 6911D
Anvil 6913D