Bosch 24618, 25614, 24614, 25618 Operating Instructions Manual
IMPORTANT: IMPORTANT: IMPORTANTE:
Read BeforeUsing Life avantusage Leer antesdeusar
Operating/SafetyInstructions
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24614
24618
25614
25618
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Read all safety warnings and instructions, Failure to follow the warnings
and instructions may result in electric shock, fire and/or serious injury.
SAVE ALL WARNINGS AND INSTRUCTIONS FOR FUTURE REFERENCE
The term "power tool" in all of the warnings refers to your mains-operated (corded) power tool
or battery-operated (cordless) power tool.
Work area safety
Keep work area clean and well lit, Cluttered
or dark areas invite accidents.
Do not operate power tools in explosive
atmospheres, such as in the presence of
flammable liquids, gases or dust, Power
tools create sparks which may ignite the dust
or fumes.
Keep children and bystanders away while
operating a power tool, Distractions can
cause you to lose control.
Electrical safety
Power tool plugs must match the outlet.
Never modify the plug in any way. Do not
use any adapter plugs with earthed
(grounded) power tools, Unmodified plugs
and matching outlets will reduce risk of electric
shock.
Avoid body contact with earthed or grounded
surfaces such as pipes, radiators, ranges
and refrigerators, There is an increased risk
of electric shock if your body is earthed or
grounded.
Do not expose power tools to rain or wet
conditions. Water entering a power tool will
increase the risk of electric shock.
Do not abuse the cord. Never use the cord
for carrying, pulling or unplugging the power
tool. Keep cord away from heat, oil, sharp
edges or moving parts. Damagedor entangled
cords increase the risk of electric shock.
When operating a power tool outdoors,
use an extension cord suitable for outdoor
use. Use of a cord suitable for outdoor use
reduces the risk of electric shock.
Ifoperating the power tool in damp locations
is unavoidable use a Ground Fault Circuit
Interrupter (GFCI) protected supply, Use of
an GFCI reduce the risk of electric shock.
Personal safety
Stay alert, watch what you are doing and
use common sense when operating a
power tool. Do not use a power tool while
you are tired or under the influence of drugs,
alcohol or medication.A moment of inattention
while operating power tools may result in
serious personal injury.
Use personal protective equipment. Always
wear eye protection, Protective equipment
such asdust mask, non-skid safety shoes, hard
hat, or hearing protection used for appropriate
conditions will reduce personal injuries.
Prevent unintentional starting. Ensure the
switch is in the off-position before
connecting to power source and / or battery
pack, picking up or carrying the tool,
Carrying power tools with your finger on the
switch or energizing power tools that have the
switch on invites accidents.
Remove any adjusting key or wrench before
turning the power tool on. A wrench or a
key left attached to a rotating part of the power
tool may result inpersonal injury.
Do not overreach, Keep proper footing and
balance at all times. This enables better
control of the power tool in unexpected
situations.
Dress properly. Do not wear loose clothing
or jewelry. Keep your hair, clothing and
gloves away from moving parts. Loose
clothes, jewelry or long hair can be caught in
moving parts.
If devices are provided for the connection
of dust extraction and collection facilities,
ensure these are connected and properly
used. Use of dust collection can reduce dust-
related hazards.
Power tool use and care
Do notforce the power tool. Use the correct
power tool for your application, The correct
power tool will do the job better and safer at
the rate for which it was designed.
Do not use the power tool if the switch does
not turn it on and off. Any power tool that
cannot be controlled with the switch is
dangerous and must be repaired.
-2-
Disconnect the plug from the power source
and/or the battery pack from the power tool
before making any adjustments, changing
accessories, or storing power tools, Such
preventive safety measures reduce the risk of
starting the power tool accidentally.
Store idle power tools out of the reach of
children and do not allow persons unfamiliar
with the power tool or these instructions to
operate the power tool. Power tools are
dangerous in the hands of untrained users.
Maintainpower tools. Check for misalignment
or binding of moving parts, breakage of
parts and any other condition that may
affect the power tools operation. If damaged,
have the power tool repaired before use.
Many accidents are caused by poorly
maintained power tools.
Keep cutting tools sharp and clean. Properly
maintained cutting tools with sharp cutting
edges are less likely to bind and are easier to
control.
Use the power tool, accessories and tool
bitsetc. in accordancewiththese instructions,
taking into account the working conditions
and the work to be performed, Use of the
power tool for operations different from those
intended could result ina hazardous situation.
Battery tool use and care
Recharge only with the charger specified
by the manufacturer, A charger that is
suitable for one type of battery pack may
create a risk of fire when used with another
battery pack.
Use power tools only with specifically
designated battery packs. Use of any other
battery packs may create a risk of injury and
fire.
When battery pack is not in use, keep it
away from other metal objects like paper
clips, coins, keys, nails, screws, or other
small metal objects that can make a
connection from one terminal to another.
Shorting the battery terminals together may
cause burns or a fire.
Under abusive conditions, liquid may be
ejected from the battery, avoid contact. If
contact accidentally occurs, flush with
water. If liquid contacts eyes, additionally
seek medical help, Liquid ejected from the
battery may cause irritation or burns.
Service
Have your power tool serviced bya qualified
repair person using only identical
replacement parts, This will ensure that the
safety of the power tool is maintained.
-3-
Hold tools by insulated gripping surfaces
when performing an operation where the
cutting tool may contact hidden wiring.
Contact with a "live" wire will make exposed
metal parts of the tool "live" and shock the
operator.
Use clamps or other practical way to
secure and support the workpiece to a
stable platform, Holding the work by hand
or against your body is unstable and may
lead to loss of control.
Do not drill, fasten or break into existing wails
or other blind areas where electrical wiring
may exist. If this situation is unavoidable,
disconnect all fuses or circuit breakers feeding
this worksite.
Always wear safety goggles or eye
protection when using this tool.
Wear ear protectors when using the tool for
extended periods. Prolonged exposure to
high intensity noise can cause hearing loss.
Use thick cushioned gloves and limit the
exposure time by taking frequent rest
periods. Vibration caused by hammer-drill
action may be harmful to your hands and
arms.
Secure the material being fastened. Never
hold it in your hand or across your legs.
Unstable support can cause loss of control
and injury.
Avoid accidental starting, Be sure the
forward/reverse switch is in the off
position before inserting battery pack,
Carrying appliances with your finger on the
switch or inserting the battery pack into an
appliance with the switch on invites
accidents.
Remove battery pack before changing
accessories. Accidental starting may occur
because battery appliances with a battery
inserted are in the operative condition.
Be prepared for a reaction torque when
"seating" or removing a fastener. The
screwdriver housing may tend to twist in the
opposite direction of bit rotation when
"seating" or removing a fastener depending
on the torque setting of the tool.
Do not use dull or damaged bits and
accessories, When installing an accessory,
insert the shank of the bit well within the
chuck. Be sure the chuck has locked onto
the bit correctly.
Do not run the tool while carrying it at
your side, A spinning bit could become
entangled with clothing and injury may result.
Place the tool onto the fastener only when
the screwdriver is switched off, Rotating
driver tools can slide off the fastener.
Do not use this tool as a drill. Tools
equipped with shut-off clutches are not
designed for drilling applications. The clutch
can shut off automatically and without
warning.
Be careful when driving long screws -
there is a risk of sliding off the fastener
head depending on type of socket or bit
used. First test the run-down of a fastener
and pay attention during the screw driving
process to ensure you do not injure yourself
if the tool bit or socket slides off of the
fastener.
_ ome dust created by
power sanding, sawing,
grinding, drilling and other construction
activities contains chemicals known to
cause cancer, birth defects or other
reproductive harm. Some examples of
these chemicals are:
• Lead from lead-based paints
• Crystalline silica from bricks, cement and
other masonry products.
• Arsenic and chromium from chemically
treated lumber.
Your risk from these exposures varies
depending on how often you do this type of
work. To reduce your exposure to these
chemicals, work in a well-ventilated area and
work with approved safety equipment such
as dust masks designed to filter out
microscopic particles.
-4-
Battery/Charger
Before using battery charger, read all
instructions and cautionary markings on
(1) battery charger, (2) battery pack, and (3)
product using battery.
Use only the charger which accompanied
your product or direct replacement as
listed in the catalog or this manual, Do not
substitute any other charger. Use only Bosch
approved chargers with your product. See
Functional Description and Specifications.
Do not disassemble charger or operate the
charger if it has received a sharp blow,
been dropped or otherwise damaged in any
way. Replace damaged cord or plugs
immediately. Incorrect reassembly or damage
may result in electric shock or fire.
Do not recharge battery in damp or wet
environment. Do not expose charger to rain
or snow. If battery case is cracked or
otherwise damaged, do not insert into
charger. Battery short or fire may result.
Charge only Bosch approved rechargeable
batteries. See Functional Description and
Specifications. Other types of batteries may
burst causing personal injury and damage.
Charge battery pack in temperatures above
+32 degrees F (0 degrees C) and below
+113 degrees F (45 degrees C), Store tool
and battery pack in locations where
temperatures will not exceed 120 degrees F
(49 degrees C). This is important to prevent
serious damage to the battery ceils.
Battery leakage may occur under extreme
usage or temperature conditions. Avoid
contact with skin and eyes. The battery
liquid is caustic and could cause chemical
burns to tissues. If liquid comes in contact with
skin, wash quickly with soap and water. If the
liquid contacts your eyes, flush them with water
for a minimum of 10 minutes and seek medical
attention.
Place charger on flat non-flammable
surfaces and away from flammable
materials when re-charging battery pack,
The charger and battery pack heat during
charging. Carpeting and other heat insulating
surfaces block proper air circulation which may
cause overheating of the charger and battery
pack. If smoke or melting of the case are
observed unplug the charger immediately and
do not use the battery pack or charger.
Use of an attachment not recom-
mended or sold by Bosch will result in a
risk of fire, electric shock or injury to
persons.
Battery Care
When batteries are not in nails, screws, keys, etc. Fire or injury may
tool or charger, keep them result.
away from metal objects. For example, to DO NOT PUT BATTERIES INTO FIRE OR
protect terminals from shorting DO NOT EXPOSE TO HIGH HEAT. They may
place batteries in a tool box or pocket with explode.
-5-
Battery Disposal
Do not attempt to disas-
semble the battery or
remove any component projecting from the
battery terminals, Fire or injury may result.
Prior to disposal, protect exposed terminals
with heavy insulating tape to prevent shorting.
LITHIUM-ION BATTERIES
If equipped with a lithium-ion battery, the
battery must be collected, recycled or disposed
of inan environmentally sound manner.
"The EPA certified RBRC
Battery Recycling Seal on the
lithium-ion (Li-ion) battery
indicates Robert Bosch Tool
Corporation is voluntarily
participating in an industry
program to collect and recycle these batteries
at the end of their useful life, when taken out
of service in the United States or Canada. The
RBRC program provides a convenient
alterative to placing used Li-ion batteries into
the trash or the municipal waste stream, which
may be illegal in your area.
Please call 1-800-8-BATTERY for information
on Li-ion battery recycling and disposal
bans/restrictions in your area, or return your
batteries to a Skil/Bosch/Dremel Service
Center for recycling. Robert Bosch Tool
Corporation's involvement in this program is
part of our commitment to preserving our
environment and conserving our natural
resources."
- WARNING
- User must read instruction manual
- Wear eye protection
-6-
IMPORTANT:
and learn their meaning.
tool better and safer.
Symbol
V
A
Hz
W
kg
min
s
O
no
.../min
Some of the following symbols may be used on your tool. Please study them
Proper interpretation of these symbols will allow you to operate the
Name
Volts
Amperes
Hertz
Watt
Kilograms
Minutes
Seconds
Diameter
No load speed
Revolutions or reciprocation per minute
0 Off position
1,2, 3.... Selector settings
I, II, III,
m_-
[]
(_ Earthing terminal
/,_ Warning symbol
Li-ion RBRC seal
Q his symbol designates
that this tool is listed by
Underwriters Laboratories.
Infinitelyvariable selector with off
Arrow
Alternating current
Direct current
Alternating or direct current
Class II construction
(
This symbol designates
that this tool is listed by
the Canadian Standards C US
Association.
Designation/Explanation
Voltage (potential)
Current
Frequency (cycles per second)
Power
Weight
Time
Time
Size of drill bits, grinding wheels, etc.
Rotational speed, at no load
Revolutions, strokes, surface speed,
orbits etc. per minute
Zero speed, zero torque...
Speed, torque or position settings.
Higher number means greater speed
Speed is increasing from 0 setting
Action in the direction of arrow
Type or a characteristic of current
Type or a characteristic of current
Type or a characteristic of current
Designates Double Insulated
Construction tools.
Grounding terminal
Alerts user to warning messages
Designates Li-ion battery recycling
program
This symbol designates that
this tool is listed by the
Canadian Standards
Association, to United States
and Canadian Standards.
This symbol designates that
this tool is listed by
Underwriters Laboratories, to
United States and Canadian
Standards.
c_o This symbol designates that this tool is listed by the Intertek Testing
s Services, to United States and Canadian Standards.
"7-
This symbol
designates
that
this tool
complies
to NOM
Mexican
Standards.
1_I_ Disconnect battery pack from tool before making any assembly,
adjustments or changing accessories. Such preventive safety measures
reduce the risk of starting the tool accidentally.
Cordless Impact Drivers and Impact Wrenches
1/2"SQUAREDRIVE
(Models 24614 & -- VENTILATION
24618 only) OPENINGS
LOCKING
SLEEVE
BUILTIN WORKLIGHT--
VARIABLESPEED
TRIGGERSWITCH
BMTERYPACK
RELEASEBUTTON
BATTERYPACK
COVER
FORWARD/REVERSING
LEVER& TRIGGERLOCK
GRIP
BITANDBIT
STORAGEAREA
(Models 25614 &
25618 only)
BELTCLIP
(OptionalAccessory)
Model number 24614 24618
Voltagerating 14.4V = 18 V=
No loadspeed no0-2,800/min no0-2,800/min
Impact rate 0-3,200 0-3,200
Maximum torque 1,400 in-lbs 1,600in-lbs
Maximum Capacities
Output drive 1/2"Squaredrive 1/2"Squaredrive
Chucksize
Batterypack
Charger
Voltage rating
BAT607& BAT614 BAT609& BAT618
BAT607G& BAT614G BAT609G& BAT618G
B0630 & B0660 B0630 & B0660
120V'_,_60 Hz 120 V'-_60 Hz
25614 25618
14.4V_ 18 V_
no012,800/min no0-2,800/min
0-3,200 0-3,200
1,400in-lbs 1,500in-lbs
1/4"Hex-shank 1/4"Hex-shank
with powergroove with powergroove
BAT607& BAT614 BAT609& BAT618
BAT607G& BAT614G BAT609G& BAT618G
BC630& BC660 BC630& BC660
120V,"_60 Hz 120 V'-_60 Hz
NOTE:Fortool specifications refer to the nameplateon your tool.
"8-
_ isconnect battery pack
from tool before making
any assembly, adjustments or changing
accessories. Such preventive safety
measures reduce the risk of starting the tool
accidentally.
INSERTING AND REMOVING
ACCESSORIES
(Models 25614 & 25618 only)
To avoid loss of control,
ensure bit is locked in chuck
by pulling on bit after it has been inserted.
The chuck accepts only standard 1/4"
hexagonal shank accessories with power
groove.
Your tool is equipped with a quick release
chuck. To insert an accessory, simply pull
locking sleeve forward, insert desired
accessory into chuck and release locking
sleeve (Fig. 2).
To remove an accessory, pull locking sleeve
forward and simply remove it from the chuck.
W
LOCKINGSLEEVE--
INSERTING AND REMOVING
ACCESSORIES
(Models 24614 & 24618 only)
Attach only high quality accessories with the
proper size square drive designed for use with
impact wrenches.
Your impact wrench is equipped with a 1/2"
square drive.
To install a socket, simply push completely
onto output drive. To remove, pull off output
drive (Fig. 3).
W
OUTPUT
DRIVE
INTENDED USE
This tool is intended for the fastening and
loosening of bolts, nuts and various threaded
fasteners. This tool is not intended for use as a
drill.
VARIABLE SPEED CONTROLLED
TRIGGER SWITCH
Your tool is equipped with a variable speed
trigger switch. The tool can be turned "ON" or
"OFF" by squeezing or releasing the trigger.
The speed can be adjusted from the minimum
to maximum nameplate RPM bythe pressure
you apply to the trigger. Apply more pressure
to increase the speed and release pressure to
decrease speed (Fig. 1).
BRAKE
(Models 24614, 24618, 25614 & 25618 only)
When the trigger switch is released it
activates the brake to stop the chuck quickly.
This is especially useful in the repetitive
driving and removal of screws.
-9-
FORWARD/REVERSING
LEVER & TRIGGER LOCK
pl__ After tool use, lock trigger in
"OFF" position to help prevent
accidental starts and accidental discharge.
Your tool is equipped with a forward/
reversing lever and trigger lock located above
the trigger (Fig. 4). This lever was designed
for changing rotation of the bit, and for locking
the trigger in an "OFF" position.
For forward rotation, (with chuck pointed
away from you) move the lever to the far left.
For reverse rotation move the lever to the far
right. To activate trigger lock move lever to
the center off position.
I__ Do not change direction of
rotation until the tool
comes to a complete stop, Shifting during
rotation of the chuck can cause damage to
the tool.
FORWARD/REVERSING
BUILT IN WORK LIGHT
Your tool is also equipped with a light that turns
on automatically when the switch is activated,
for better visibility when driving (Fig. 1).
BIT STORAGE AREA
(Models 25614 & 25618 only)
Your tool is equipped with a bit and storage
area that is conveniently located in the handle
base where it is always handy and unlikely to
get lost or misplaced (Fig. 5).
BELT CLIP (Optional Accessory)
When the tool is attached to
the belt, position yourself to
avoid entanglement with surrounding objects.
Unexpected entanglement could cause the tool
to fall resulting in injury to the operator or
bystanders.
The optional belt clip accessory will allow you to
conveniently attach your tool to your belt. This
feature will allow you to have both hands free
when climbing a ladder or moving to another
work area.
The belt clip can be attached to either side of
the tool by securing it with a mounting screw.
Always make sure you securely tighten the
mounting screw before use (Fig.5).
To use clip, turn tool upside down and attach
to your belt.
BITANDBIT
STORAGE
AREA
_l
BELTCLIP
(OptionalAccessory)
INSERTING AND RELEASING BATTERY PACK
Set Forward/Reversing lever to the center (off Your tool is equipped with a secondary locking
position). Slide charged battery pack into the latch to prevent the battery pack from
housing until the battery pack locks into completely failing out of the handle, should it
position (Fig. 6). become loose due to vibration.
-10-
To remove the battery pack, press the battery
pack release button and slide the battery pack
forward.
Press the battery pack release button again
and slide the battery pack completely out of
tool housing (Fig. 6).
IMPORTANT CHARGING NOTES
1. The charger was designed to fast charge
the battery only when the battery temperature
is between 32°F (0°C) and 113°F (45°C). If the
battery pack is too hot or too cold, the charger
will not fast charge the battery. (This may
happen if the battery pack is hot from heavy
use). When the battery temperature returns to
between 32°F (0°C) and 113°F (45°C), the
charger will automatically begin charging.
2. A substantial drop in operating time per
charge may mean that the battery pack is
nearing the end of its life and should be
replaced.
3. Remember to unplug charger during
storage period.
4. Ifbattery does not charge properly:
a. Check for voltage at outlet by plugging in
some other electrical device.
b. Check to see if outlet is connected to a
light switch which turns power "off" when lights
are turned off.
c. Check battery pack terminals for dirt.
Clean with cotton swab and alcohol if
necessary.
d. If you still do not get proper charging,
take or send tool, battery pack and charger to
your local Bosch Service Center. See "Tools,
Electric" in the Yellow Pages for names and
addresses.
Note: Use of chargers or battery packs not
sold by Bosch will void the warranty.
CHARGER INDICATORS, SYMBOLS AND MEANING (Model B0630)
Ifthe indicator lights are "OFF", the charger is
not receiving power from power supply outlet.
l ..$_. ] Ifthe green indicator light is "ON",.. | .. the charger is plugged in but the
battery pack is not inserted, or
the battery pack is fully charged.
[ i''t' eoreer''r'd'cator''oht's
- - "BLINKING", the battery pack is
beingfast-charged. Fast-charging
will automatically stop when the battery pack is
fully charged.
.._._ £1=] If the red indicator light is "ON",
"" I " _- ] the battery pack is too hot or cold
v j for fast-charging. The charger will
automatically switch to fast-charging once a
suitable temperature is reached.
,.[_:. ,4-_]lf the red indicator light is
JX[/"BLINKING", the battery pack
" " " "'-"'/cannot accept a charge or the
contacts of the charger or battery pack are
contaminated. Clean the contacts of the
charger or battery pack only as directed in
these operating instructions or those supplied
with your tool or battery pack.
-11-
CHARGING BATTERY PACK (Model B0630)
Plug charger cord into your standard power
outlet.
With no battery pack inserted, the charger's
green indicator light will go ON. This indicates
the charger is receiving power and the charger
is ready for operation.
When you insert the battery pack into the
charger. The charger's green indicator light will
beginto "BLINK". This indicates that the battery
is receiving a fast charge (Fig. 7).
When the indicator light stops "BLINKING" (and
becomes a steady green light) fast charging is
complete. The battery pack is fully charged and
can be removed from the charger.
The battery pack may be used even though the
light may still be blinking. The light may require
more time to stop blinking depending on
temperature.
The purpose of the green light isto indicatethat
the battery pack is fast-charging. It does not
indicate the exact point of full charge. The light
will stop blinking in less time if the battery pack
was not completely discharged.
When you begin the charging process of the
battery pack, a steady red light could also
mean the battery pack is too hot or too cold.
Fast charging is only possible when the
temperature range of the battery pack is
between 32°F (0°C) and 113°F (45°C). When
needed, the internal fan of the charger will turn
on to aid the charging process and speed.
As soon as the battery pack reaches the
correct temperature range, the battery charger
will automatically switch to fast charging.
If the red indicator light is "BLINKING", the
battery pack cannot accept a charge.
•Check to make sure the battery pack is
inserted into the charger properly.
•Clean the contacts of the charger or battery
pack (e. g. by inserting and removing the
battery several times) or replace the battery
pack, as required.
When the battery pack is fully charged, unplug
the charger (unless you're charging another
battery pack) and slip the battery pack back
into the tool.
PACK
REDLIGHT
-12-
CHARGER INDICATORS, SYMBOLS AND MEANING (Model BC660)
Ifthe indicator lights are "OFF", the charger is
not receiving power from power supply outlet.
i_._ 1 If the green indicator light is
"ON", the charger is plugged
in but the battery pack is not
inserted, or the battery pack is fully charged, or
the battery pack is too hot or cold for fast-
charging. The charger will automatically switch
to fast-charging once a suitable temperature is
reached.
[ _._)/ If the green indicat°r light is
...... BLINKING", the battery pack is
being fast-charged. Fast-
charging will automatically stop when the
battery pack is fully charged.
CHARGING BATTERY PACK (Model BC660)
Plug charger cord into your standard power
outlet.
With no battery pack inserted, the charger's
green indicator light will go ON. This indicates
the charger is receiving power and the charger
is ready for operation.
When you insert the battery pack into the
charger, the charger's green indicator light will
begin to "BLINK". This indicates thatthe battery
is receiving a fast charge (Fig.8).
When the indicator light stops "BLINKING" (and
becomes a steady green light) fast charging is
complete. The battery pack is fullycharged and
can be removed from thecharger.
When you begin the charging process of the
battery pack, a steady green light could also
mean the battery pack istoo hot or too cold.
Fast charging is only possible when the
temperature range of the battery pack is
between 32°F (0°C) and 113°F (45°C). When
needed, the internal fan of the charger will turn
on to aid the charging process and speed.
As soon as the battery pack reaches the
correct temperature range, the battery charger
will automatically switch to fast charging.
The battery pack may be used even though the
light may still be blinking. The light may require
more time to stop blinking depending on
temperature.
The purpose of the green lightis to indicate that
the battery pack is fast-charging. It does not
indicate the exact point of full charge. The light
will stop blinking in less time ifthe battery pack
was not completely discharged.
Ifthe green indicator light is "ON", the battery
pack cannot accept a charge.
• Check to make sure the battery pack is
inserted into the charger properly.
• Clean the contacts of the charger or battery
pack (e. g. by inserting and removing the
battery several times) or replace the battery
pack, as required.
When the battery pack is fully charged, unplug
the charger (unless you're charging another
battery pack)and slip the battery pack back into
the tool.
BATTERY
PACK
I=[_E;!
GREENLIGHT
-13-
Operating Tips
You will extend the life of your bits and do
neater work if you always put the bit in
contact with the work before pulling the
trigger. During the operation, hold the tool
firmly and exert light, steady pressure. Too
much pressure at low speed will stall the tool.
Too little pressure will keep the bit from
cutting and cause excess friction by sliding
over the surface. This can be damaging to
both tool and bit.
DRIVING WITH VARIABLE SPEED
The technique is to start slowly, increasing
the speed as the screw runs down. Set the
screw snugly by slowing to a stop. Prior to
driving screws, pilot and clearance holes
should be drilled.
Always hold the machine straight on the bolt
to be tightened.
The best method to determine the right
impacting/tightening duration is by means of
a trial. For small screws, the right
impacting/tightening duration can be reached
in less then 0.5 Sec. Therefore, work with
low RPM and switch the machine off
immediately when the screw is tight and the
impacting sound can be heard.
For screwing larger, longer wood screws into
hard material, pre-drilling is the best method.
TIGHTENING TORQUE
(Models 24614 & 24618 only)
The tightening torque depends on the
duration of the impacting/tightening action.
The largest tightening torque is achieved
after approx. 6 to 10 Sec. impacting/
tightening action.
The torque build-up depends on the
following factors:
• Hardness of the bolts/nuts.
• Type of washer (disk washer, spring
washer, seal).
• Hardness of the material to be joined.
• Lubricating effect at the surfaces of the
junction.
This leads to the following application cases:
Hard case: The joining of metal to metal with
a disk washer. The maximum torque is
reached after a relative short impacting/
tightening action.
Medium case: The joining of metal to metal
where spring ring washer, disk spring
washer, stud bolts or bolts/nuts with conical
seats are used.
Soft case: The joining of e.g. metal to wood
or insulation material.
For middle or soft joining cases, the
maximum tightening torque is less as for
hard cases. Therefore, a longer impacting/
tightening action is necessary to arrive at the
maximum tightening torque.
FASTENING WITH SCREWS
This procedure shown in (Fig. 9) will enable
you to fasten materials together with your tool
without stripping, splitting or separating the
material.
First, clamp the pieces together and drill the
first hole 2/3 the diameter of the screw. Ifthe
material is soft, drill only 2/3 the proper
length. If it is hard, drill the entire length.
Second, unclamp the pieces and drill the
second hole the same diameter as the screw
shank in the first or top piece of wood.
Third, if fiat head screw is used, countersink
the hole to make the screw flush with the
surface. Then, simply apply even pressure
when driving the screw. The screw shank
clearance hole in the first piece allows the
screw head to pull the pieces tightly together.
I1=[_1
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FASTENING
WITH SCREWS
(
\ N _ 3
1, Drill2/3diameterand t "
2/3 of screw length for _ _
soft materials, full / ]
length for hard " I
m_terials, t I
2. Drill same
diameter as
screw shank.
Countersink
same diameter
as screw head.
Apply a slight / _: !
even pressure
when driving
screws.
Screw
RUNNING NUTS AND BOLTS
Variable speed control must be used with
caution for driving nuts and bolts with socket
set attachments. The technique is to start
slowly, increasing speed as the nut or bolt runs
down. Set the nut or bolt snugly by slowing the
tool to a stop. Ifthis procedure is not followed,
the tool will have a tendency to torque or twist
in your hands when the nut or bolt seats.
Service
_ NO USER SERVICEABLE
PARTS INSIDE. Preventive
maintenance performed by unauthorized
personnel may result in misplacing of
internal wires and components which
could cause serious hazard. We recom-
mend that all tool service be performed by a
Bosch Factory Service Center or Authorized
Bosch Service Station. SERVICEMEN:
Disconnect tool and/or charger from power
source before servicing.
BATTERIES
Be alert for battery packs that are nearing
their end of life. If you notice decreased
tool performance or significantly shorter
running time between charges then it is time
to replace the battery pack. Failure to do so
can cause the tool to operate improperly or
damage the charger.
TOOL LUBRICATION
Your Bosch tool has been properly lubricated
and is ready for use.
CARBON BRUSHES
The brushes and commutator in your tool have
been engineered for many hours of
dependable service.
If your tool runs sporadically, loses power,
makes unusual noises or runs at a reduced
speed, check the brushes. To continue using
the tool in this condition will permanently
damage your tool.
Check both brushes. Usually the brushes will
not wear out simultaneously. If one brush is
worn out, replace both brushes.
To check brushes: Disconnect battery pack
from tool. Rotate brush cap at the rear part of
housing counter-clockwise with a coin or
screwdriver and remove cap (Fig. 10).
Ii[_Ill]
BRUSH
BRUSH
CAP
Lift out the brushes; note which way they face,
so that the brushes can be returned to their
original position. New brushes can also be
inserted turned 180°. Clean the brush holder
openings with compressed air or a clean cloth
and replace the brushes and brush covers.
After replacing brushes the tool should be run
at no-load and run it freely at full speed for 2
minutes before using the tool. This will allow
the brushes to "seat" properly and will give
you more hours of life from each set of
brushes.
Only genuine Bosch replacement brushes
specially designed for your tool should be
used.
D.C. MOTORS
The motor in your tool has been engineered
for many hours of dependable service. To
maintain peak efficiency of the motor, we
recommend it be examined every six months.
Only a genuine Bosch replacement motor
specially designed for your tool should be
used.
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