Craftsman 315277180 User Manual PROFESSIONAL HAMMER DRILL Manuals And Guides 98110178

CRAFTSMAN Drill Hammer Manual 98110178 CRAFTSMAN Drill Hammer Owner's Manual, CRAFTSMAN Drill Hammer installation guides

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Owner's Manual /
Adjustable Variable Speed - Reversible
Double Insulated
3/8 in. PROFESSIONAL HAMMER DRILL
Model No.
315.277180
Save this manual for
future reference
_IL CAUTION: Read and
follow all Safety Rules and
Operating Instructions before
first use of this product.
Sears, Roebuck and Co., Hoffman Estates, IL 60179 USA NRTL
972000-381
4-98
•Table Of Contents .......................................................................................................................................... 2
•Warranty ......................................................................................................................................................... 2
•Introduction..................................................................................................................................................... 2
•Rules For Safe Operation ........................................................................................................................... 3-5
•Product Specifications .................................................................................................................................... 6
•Unpacking ....................................................................................................................................................... 6
•Accessories .................................................................................................................................................... 6
•Features ......................................................................................................................................................... 7
•Operation ................................................................................................................................................... 8-14
•Maintenance ................................................................................................................................................. 15
•Exploded View and Repair Parts List............................................................................................ :.......: 16-17
•Parts Ordering/Service ............................................................................................................................... 18
FULL ONE YEAR WARRANTY ON CRAFTSMAN PROFESSIONAL HAMMER DRILL
If this rRAFT$1qA# Hammer Drill fails due to a defect in material or workmanship within one year from the date
of purchase, Sears will repair it, free of charge.
WARRANTY SERVICE IS AVAILABLE BY SIMPLY RETURNING THE TOOL TO THE NEAREST SEARS
STORE IN THE UNITED STATES.
This warranty gives you specific legal rights, and you may also have other rightswhich vary from state to state.
Sears, Roebuck and Co., Dept. 817WA, Hoffman Estates, IL 60179
Your hammer drill has many features for making your
drillingoperations more pleasant and enjoyable.
Safety, performance and dependability have been
given top priority inthe design of this drill making it
easy to maintain and operate.
_CAUTION: Carefully read through this entire
owner's manual before using your new hammer
drill. Pay close attention to the Rules For Safe
Operation, Warnings and Cautions. If you use
your drill properly and only for what it is intended,
you will enjoy years of safe, reliable service.
The purpose of safety symbols Is to attract your attention to possible dangers. The safety symbols, and
the explanations with them, deserve your careful attention and understanding. The safety warnings do
not by themselves eliminate any danger. The Instructions or warnings they give are not substitutes for
proper accident prevention measures.
SYMBOL MEANING
ASAFETY ALERT SYMBOL:
Indicates danger, waming, or caution. May be used in conjunctionwith other symbols or picto-
graphs.
ADANGER: Failure to obey a safety waming will result in serious injury to yourself or to others,
Always follow the safety precautionsto reduce the dsk of fire, electdc shock and personal injury.
WARNING: Failure to obey a safety waming can result in serious injury to yourself or to others.
Always follow the safety precautionsto reduce the dsk of fire, electdc shock and personal injury.
CAUTION: Failure to obey a safety waming may result in property damage or personal injuryto
yourself or to others. Always follow the safety precautions to reduce the dsk of fire, electdc shock
and personal injury.
NOTE: Advises you of information or instructionsvital to the operation or maintenance of the equipment.
DOUBLE INSULATION
Double insulation is a concept in safety, in electric
power tools which eliminates the need for the usual
three-wire grounded power cord. All exposed metal
parts are isolated from internal metal motor
components with protecting insulation. Double
insulated tools do not need to be grounded.
A WARNING: Do not attempt to operate this tool
until you have read thoroughly and understand
completely all instructions, safety rules, etc.
contained in this manual. Failure to comply can
result in accidents involving fire, electric shock,
or sedous personal injury. Save owner's manual
and review frequently for continuing safe
operation, and instructing others who may use
this tool.
READ ALL INSTRUCTIONS
KNOW YOUR POWER TOOL. Read owner's
manual carefully. Learn its applications and
limitations as well as the specific potential
hazards rel-atedto this tool.
GUARD AGAINST ELECTRICAL SHOCK by
preventing body contact with grounded surfaces.
For example; pipes, radiators, ranges, refrigera-
tor enclosures.
BKEEP GUARDS IN PLACE and in working
order.
IMPORTANT
Servicing of a tool with double insulation requires
extreme care and knowledge of the system and
should be performed only by a qualified service
technician. For service we suggest you return the tool
to your nearest Sears Store for repair. Always use
original factory replacement parts when servicing.
KEEP WORK AREA CLEAN. Cluttered areas
and benches invite accidents.
AVOID DANGEROUS ENVIRONMENT. Don't
use power tools in damp or wet locations or
expose to rain. Keep work area well lit.
KEEP CHILDREN AND VISITORS AWAY. All
visitors should wear safety glasses and be kept a
safe distance from work area. Do not let visitors
contact tool or extension cord.
STORE IDLE TOOLS. When not in use, tools
should be stored in a dry and high or locked-up
place - out of the reach of children.
DON'T FORCE TOOL. It will do the job better
and safer at the rate for which it was designed.
USE RIGHT TOOL. Don't force small tool or
attachment to do the job of a heavy duty tool.
Don't use tool for purpose not intended - for
example - A circular saw should never be used
for cuttingtree limbs or logs.
RULES FOR SAFE OPERATION (Continued)
WEAR PROPER APPAREL. Do not wear loose
clothing or jewelry that can get caught in tool's
moving parts and cause personal injury. Rubber
gloves and nonskid footwear are recommended
when working outdoors. Wear protective hair
covering to contain long hair and keep it from
being drawn into nearby air vents.
ALWAYS WEAR SAFETY GLASSES. Everyday
eyeglasses have only impact-resistant lenses;
they are NOT safety glasses.
PROTECT YOUR LUNGS. Wear a face or dust
mask if the operation is dusty.
PROTECT YOUR HEARING. Wear hearing
protection during extended periods of operation.
DON'T ABUSE CORD. Never carry tool by cord
or yank it to disconnect from receptacle. Keep
cord from heat, oil, and sharp edges.
SECURE WORK. Use clamps or a vise to hold
work. It'ssafer than using your hand and it frees
both hands to operate tool.
DON'T OVERREACH. Keep proper footing and
balance at all times. Do not use on a ladder or
unstable support. Secure tools when working at
elevated positions.
MAINTAIN TOOLS WITH CARE. Keep tools
sharp and clean for best and safest performance.
Follow instructionsfor lubdcating and changing
accessories.
DISCONNECT TOOLS. When not in use, before
servicing, or when changing attachments,
blades, bits, cutters, etc., all tools should be
disconnected from power supply.
REMOVE ADJUSTING KEYS AND
WRENCHES. Form habit of checking to see that
keys and adjusting wrenches are removed from
chuck before turningtool on.
AVOID ACCIDENTAL STARTING. Don't carry
plugged-in tool with finger on switch. Be sure
switch is off when plugging in.
MAKE SURE YOUR EXTENSION CORD IS IN
GOOD CONDITION. When using an extension
cord, be sure to use one heavy enough to carry
the current your product will draw. An undersized
cord will cause adrop in line voltage resultingin
loss of power and overheating, A wire gage size
(A,W.G.) of at least 16 is recommended for an
extension cord 100 feet or less in length. A cord
exceeding 100 feet is not recommended. If in
doubt, use the next heavier gage. The smaller
the gage number, the heavier the cord.
OUTDOOR USE EXTENSION CORDS. When
tool is used outdoors, use only extension cords
suitable for use outdoors. Outdoor approved
cords are marked with the suffixW-A, for ex-
ample - SJTW-A or SJOW-A.
KEEP BITS CLEAN AND SHARP, Sharp bits
minimize stalling and kickback.
KEEP HANDS AWAY FROM DRILLING AREA.
Keep hands away from bits. Do not reach
underneath work while bit is rotating. Do not
attempt to remove material while bit is rotating.
NEVER USE IN AN EXPLOSIVE ATMO-
SPHERE. Normal sparking of the motor could
ignite fumes.
INSPECT TOOL CORDS PERIODICALLY and if
damaged, have repaired by an authorized
service facility. Stay constantly aware of cord
location.
INSPECT EXTENSION CORDS PERIODI-
CALLY and replace if damaged.
KEEP HANDLES DRY, CLEAN, AND FREE
FROM OIL AND GREASE. Always use a clean
cloth when cleaning. Never use brake fluids,
gasoline, petroleum-based products, or any
strong solvents to clean your tool.
STAY ALERT AND EXERCISE CONTROL.
Watch what you are doing and use common
sense. Do notoperate tool when you are tired.
Do not rush.
4
RULESFORSAFEOPERATION(Continued)
CHECKDAMAGEDPARTS.Beforefurtheruse •
of the tool, a guard or other part that is damaged
should be carefully checked to determine that it
will operate properly and perform its intended •
function. Check for alignment of moving pads,
binding-of moving parts, breakage of parts,
mounting and any other conditions that may •
affect its operation. A guard or other part that is
damaged should be properly repaired or re-
placed by an authodzed service center.
DO NOT USE TOOL IF SWITCH DOES NOT
TURN IT ON AND OFF. Have defective switches
replaced by an authorized service center.
DRILLING INTO ELECTRICAL WIRING IN
WALLS CAN CAUSE DRILL BIT AND CHUCK •
TO BECOME ELECTRICALLY LIVE. Do not
touch the chuck or metal housing when drilling •
into a wall; grasp only the insulated handle(s)
provided on the tool.
INSPECT FOR and remove all nails from lumber
before ddll!ng.
DRUGS, ALCOHOL, MEDICATION. Do not
operate this tool while under the influence of
drugs, alcohol, or any medication.
POLARIZED PLUGS. To reduce the dsk of
electdc shock, this tool has a polarized plug (one
blade is wider than the other). This plug will fit in
a poladzed outlet only one way. If the plug does
not fit fully in the outlet, reverse the plug. If it still
does not fit, contact a qualified electrician to
install the proper outlet. Do not change the plug
in any way.
WHEN SERVICING USE ONLY IDENTICAL
CRAFTSMAN REPLACEMENT PARTS.
SAVE THESE INSTRUCTIONS. Refer to them
frequently and use them to instructothers who
may use this tool. If you loan someone this tool,
loan them these instructionsalso.
_, Look for this symbol to point out important safety precautions. It means attention!!! Your
safety is involved.
,_ WARNING:
The operation of any hammer ddll can result in foreign objects being thrown into your eyes,
which can result in severe eye damage. Before beginning power tool operation, always wear
safety goggles or safety glasses with side shields and a full face shield when needed. We
recommend Wide Vision Safety Mask for use over eyeglasses or standard safety glasses
with side shields, available at Sears Retail Stores.
SAVE THESE INSTRUCTIONS
5
Chuck 3/8in.Keyless
ChuckCapacity 1/32in.to 318in.
Horsepower 1/2
Input 5.0Amperes
Rating 120volts,60Hz,AC
Switch AdjustableVariableSpeed-Reversible
No Load Speed 0-1200 RPM
Hammer Speed 0 - 60,000 BPM
Hammer Travel .028
Your hammer drill has been shipped completely
assembled except for the auxiliary handle and depth
gage rod. Inspect it carefully to make sure no
breakage or damage has occurred duringshipping. If
any pads are damaged or missing, contact your
nearest Sears Retail Store to obtain replacement pads
before attempting to operate hammer ddll. The
auxiliary handle, depth gage rod, and this owner's
manual are also included in the box.
_lb WARNING: If any pads are missing, do not
operate this tool until the missing parts are
replaced. Failure to do so could result in possible
sedous personal injury.
The following recommended accessories are currently available at Sears Retail Stores.
•High Speed Bits (For wood or metal) 3/8 in. Max.
•Masonry Bits 1/2 in. Max.
•Wood Boring Bits 1 in. Max.
•Hole Saws 1 in. Max.
_k, WARNING: The use of attachments or accessories not listed might be hazardous.
6
KNOWYOURHAMMERDRILL
See Figure 1.
Before attempting to use any tool, familiarize yourself
with all operating features and safety requirements.
ELECTRICAL CONNECTION
Your hammer ddll has a precision built electric motor.
It should be connected to a power supply that Is 120
volta, 60 Hz, AC only (normal household current).
Do not operate this tool on direct current (DC). A
substantial voltage drop will cause a loss of power
and the motor will overheat. If your hammer drill does
not operate when plugged into an outlet, double-
check the power supply.
AUXILIARY HANDLE
An auxiliary handle has been packed with your ddll for
ease of operation and to help prevent lossof control.
DEPTHGAGEROD
DEPTH GAGE ROD
A depth gage rod has been packed with your hammer
ddllto assist you in controllingthe depth of drilled
holes.
APPLICATIONS
(Use only for the purposes listed below)
•Hammer drillingin concrete and masonry.
•Drilling in wood.
•Drilling in ceramics, plastics, fiberglass, and
laminates.
•Drilling in both hard and soft metals.
•Using driving accessories, such as drivingscrews
with screwdriver bits.
•Mixing paints.
WING
KEYLESS SCREW
CHUCK
HAMMER ADJUSTMENT
MODE KNOB
LOCK-ON
VARIA
CONTROLSELECTOR
SWITCHTRIGGER
DRILLING
MODE Fig. 1
_1, WARNING: Do not allow familiarity with tools to make you careless. Remember that a careless fraction of
a second is sufficient to inflict severe injury.
7
WARNING: Your drill should never be
am, connected to power supply when you are
assembling parts, making adjustments, installing
or removing ddll bits, cleaning, or when not in
use. Disconnecting your drill will prevent
accidental starting that could cause sedous
personal injury.
SWITCH
See Figure 2.
To turn your hammer ddll ON, depress the switch
tdgger. Release switch trigger to turn your hammer
drill OFF.
SWITCH LOCK-ON
TRIGGER
Fig. 2
LOCK-ON BUTTON
See Figure 2.
Your hammer ddll is equipped with a lock-onfeature,
which is convenient when continuous drillingfor
extended pedods of time is required. To lock-on,
depress the switch trigger, push in and hold the lock-
on button located on the side of the handle, then
release switch trigger. Release lock-on button and
your drill will continue running.
To release the lock, depress the switch trigger and
release.
If you have the lock-on feature engaged dudng use
and your drill becomes disconnected from power
supply, disengage the lock-on feature immediately.
_lb WARNING: Before connecting your ddll to
power supply source, always check to be sure it
is not in lock-on position (depress and release
switch trigger). Failure to do so could result in
accidental starting of your ddll resulting in
possible sedous injury. Also, do not lock the
tdgger on jobs where your drill may need to be
stopped suddenly.
REVERSIBLE
See Figure 3,
Your hammer ddll has the feature of being reversible.
The direction of chuck rotation is controlled by a lever
located above the switch trigger.With your ddll held in
normal operating position, the direction of rotation lever
should be positioned to the left of the switch for
forward ddlling operation. The directionof rotation is in
reverse when the lever is to the rightof the switch.
The design of the switch will not permit changing the
direction of rotation while the ddll is running. Release
the switch tdgger and allow the drillto stop before
changing its direction.
Note: Your hammer ddll will not run unless the switch
lever is pushed fully to the left or dght.
REVERSE(R) FORWARD(_
FORWARD
REVERSELEVER Fig. 3
8
VARIABLESPEED
See Figure 4.
Your hammer ddll has a variable speed control
selector designed to allow operator control and
adjustment of speed and torque limits. Speed and
torque can be increased or decreased by rotating the
variable speed control selector in the direction of the
arrows shown in figure 4.
VARIABLESPEED
CONTROLSELECTOR
SPEED(+)
TODECREASE
SPEED(-)
Fig, 4
Note: Hold your hammer drill in normal operating
position and turn the variable speed control selector
clockwise to increase (+) the speed and torque of
your hammer drill. Turn counterclockwise to decrease
(-) the speed and torque of your hammer drill.
If you desire to lock the switch on at a given speed,
depress the switch trigger, push in and hold the lock-
on button, and release the switch trigger. Next, adjust
the variable speed control selector until the desired
speed is reached.
Note: If the variable speed control selector is fully
turned in the counterclockwise direction, (zero setting)
your drill may not run.
If you desire not to use the variable speed control
selector, turn it in the full clockwise direction. This
will allow the speed of your drill to be fully
controlled by the amount of switch trigger
depression,
Avoid running your hammer drillat low speeds for
" _xt-ended periods of time. Running at low speeds
under constant usage may cause your drill to become
overheated. If this occurs, cool your drill by running it
without a load and at full speed.
The following guidelines may be used in determining
correct speed for various applications:
Low speed is ideal when minimum speed and power
is required. For example: starting holes without center
punching, driving screws, mixingpaint, and drilling in
ceramics.
Medium speed is suitable for drilling hard metals,
plastics, and laminates.
High speed produces best results when maximum
power is required. For example: drilling in wood; soft
metals such as aluminum, brass, and copper;
concrete; and when using drivingaccessories.
KEYLESS CHUCK
See Figure 5.
Your new drill has a keyless chuck. As the name
implies, you can hand tighten or release ddll bit in the
chuck jaws. Grasp and hold the collar of the chuck /
with one hand. Rotate the chuck body with your other
hand. The arrows shown in figure 5 indicate which
direction to rotate the chuck body in order to GRIP
(tighten) or RELEASE (unlock) the drill bit.
DRILLBIT
RELEASE
(UNLOCK) CHUCKBODY
GRIP
(TIGHTEN) CHUCKCOLLAR
Fig. 5
,_ WARNING: Do not hold chuck body with one
hand and use power of the drill to tighten chuck
jaws on drill bit. Chuck body could slip in your
hand or your hand could slip and come in contact
with rotating drill bit. This couldcause an
accident resulting in serious personal injury.
9
INSTALLINGAUXILIARYHANDLE
See Figure 6.
An auxiliary handle is packed with your ddll for ease
of operation and to help prevent loss of control.
The handle c-anbe rotated 360 ° and itcan also be
mounted on opposite side for left hand use.
Note: For convenience and ease of starting threads,
the hex nut has been trapped inside the molded slot in
the auxiliary handle,
• Unplugyour hammer drill.
_WARNING: Failure to unplug your hammer ddll
could result in accidental starting causing sedous
injury.
•Remove auxiliary handle from plastic bag.
•Loosenwing screw enough to make openingin
handle large enough to fit over chuck.
•Slide dng of handle over chuck. Note: Handle fits
on neck of gear housing.
• Rotate handle to desired operating position
aligning notches in handle with tabs on gear
housing.
•Tighten wing screw securely.
Note: If wing screw and wear plate is removed
from auxiliary handle, when reassembling, the
markings on the wear plate must be positioned as
shown infigure 6. This prevents the depth gage
rod from slipping. See Figure 9.
KEYLESSCHUCK
MARKINGSON
WEARPLATE
WING
SCREW
TIGHTEN
LOOSEN
\
TABS
TO INSTALL BITS
See Figure 7.
•Unplug your hammer ddll.
,_ WARNING: Failure to unplug your hammer ddll
could result in accidental starting causing sedous
injury.
•Open or close the chuck jaws to a pointwhere the
opening is slightly larger than the drill bit you
intend to use. Also, n_isethe front of your drill
slightly to keep the drill bit from falling out of the
chuck jaws.
•Insert ddll bit into chuck the full length of the jaws.
•Tighten chuck jaws on drill bit.
DRILLBIT
CHUCKJAWS
KEYLESSCHUCK
RIGHT Fig. 7
•To tLghtenthe chuck jaws on drill bit; grasp and
hold the collar of the chuck with one hand, while
rotating the chuck body with your other hand.
Note: Rotate the chuck body in the direction of
the arrow marked GRIP to tighten chuck jaws.
•Do not use a wrench to tighten or loosen the
chuck jaws.
_1= WARNING: Do not insert drill bit into chuck
jaws and tighten as shown in figure 8. This could
cause ddll bitto be thrown from your drill
resulting in possible serious personal injury or
damage to your chuck.
NOTCHES
AUXILIARY
HANDLE Fig. 6
To prevent possible loss of control, auxiliary handle
should be checked periodically for tightness. Do not
operate hammer drill with auxiliary handle loose.
10
Fig. 8
REMOVING BITS
•Unplugyourhammerdrill.
_1= WARNING: Failure to unplug your hammer ddll
could result in accidental starting causing serious
injury.
•Loosen the chuck jaws from drill bit.
•To loosen: grasp and hold the oollar of the chuck
with one hand, while rotating chuck body with your
other hand.
Note: Rotate chuck body in the direction of the
arrow marked RELEASE to loosen chuck jaws.
•Do not use a wrench to tighten or loosenthe
chuck jaws.
•Remove drill bit from chuck jaws.
USING DEPTH GAGE ROD
See Figure 9.
A depth gage rod has been packed with your hammer
ddll to assist you in controlling the depth of drilled
holes.
•Loosen wing screw on auxiliary handle.
•Orient depth gage rod so that markings on depth
gage red face markings on wear plate. Insert
depth gage rod through hole on auxiliary handle.
•Adjustdepth gage rod so that the drill bit extends
beyond the end of the rod to the required drilling
depth.
•Tighten wing screw securely. This secures depth
gage rod at desired depth of cut. It also secures
auxiliary handle.
TO
TO INCREASE
DECREASE DRILUNG
DRILUNG DEPTH WEAR
DEPTH |WING PLATE
_1_ ScREw
MARKINGSON
DEPTHGAGEROD
When ddlling holes with the depth gage rod installed,
the desired hole depth has been reached when the
end of the rod comes in contact with the surface of the
material being drilled.
TO ADJUST DRILLING MODE
See Figure 10.
To adjust for desired type of drilling, rotate adjustment
knob on side of motor housing in the direction of
arrows as shown in figure 10. For your convenience a
hammer symbol and drill bit symbol have been
molded into adjustment knob.
_k WARNING: Your hammer drill has not been
designed for reverse hammering. Reverse
hammering may damage your drill.
ADJUSTMENTKNOB
HAMMERMODE
DRILUNGMODE
Fig. 10
We recommend that you use carbide-tipped bits and
select hammer mode when drilling in hard materials
such as brick, tile, concrete, etc.
We recommend that you select normal ddll mode
when drillingwith twist drills, hole saws, etc. in soft
materials.
DRILLBIT
DRILLINGDEPTH
DEPTH
GAGEROD
AUXIUARYHANDLE Fig. 9
11
DRILLING
See Figure 11.
j
Fig. 11
•Depress and release the switchtrigger to be sure
your drill is in off position before connecting it to
power supply.
•Check the direction of rotation lever for correct
setting (forward or reveme). See Figure 3.
•Secure the material to be drilled in a vise or with
clamps to keep it from turning as the drillbit
rotates.
•Plug your drill into power supplysource.
•Hold your drill firmly and place the bitat the point
to be drilled.
•Depress the switchtrigger to start your drill. Do not
lock the switch on for jobs where your drill may
need to be stopped suddenly.
•Move the drillbit intoworkpiece applyingonly
enough pressure to keep the bit cutting. Do not
force your drill or apply side pressum to elongate a
hole. Let your drill and bit do the work.
When drilling hard smooth surfaces use a center
punch to mark desired hole location. This will prevent
the drill bit from slipping off center as the hole is
started. However, the variable speed feature allows
starting holes without center punching if desired. To
accomplish this, simply operate your drill at a low
speed untilthe hole is started.
,_ WARNING: Be prepared for binding or bit
breakthrough. When these situations occur, drill
has atendency to grab and kick opposite to the
direction of rotation and could cause loss of
control when breaking through material. If not
prepared, this loss of control can result in
possible serious injury.
When drilling metals, use a light oil on the drill bit to
keep it from overheating. The oil will prolongthe life of
the bit and increase the drillingaction.
If the bitjams inworkpiece or if the drill stalls, stop the
tool immediately. Remove the bit from the workpiece
and determine the mason for jamming.
12
WOOD DRILLING
•For maximum performance, use high speed steel
bits for wood ddlling.
•Turn adjustment knob on hammer drill to normal
ddlnngaction.
•Begin ddlling at a very low speed to prevent the bit
from slippingoff the startingpoint. Increase the
speed as the ddll bit bites intothe matadal.
•When ddllingthrough holes, place a block of wood
behind the workpiece to prevent ragged or
splintered edges on the back side of the hole.
•Do not lock the trigger on for Jobs where your
hammer drill may need to be stopped
suddenly.
METAL DRILLING
•For maximum performance, use high speed steel
bits for metal or steel ddlllng.
•Turn adjustment knob on hammer ddUto normal
ddUingaction.
•Begin ddlling at a very low speed to prevent the bit
from slippingoff the starting point.
•Maintain a speed and pressurewhich allows
cutting withoutoverheating the bit. Applyingtoo
much pressure will:
Overheat the ddll;
Wear the bearings;
Bend or bum bits; and
Produce off-center or irregular shaped holes.
•When ddlling large holes in metal, we recommend
that you ddUwith a small bitat first, then finishwith
a larger bit. Also, lubdcate the bit with oil to
improve ddlling action and increase bit life.
MASONRY DRILLING
•For maximum performance use carbide*tipped
masonry impact bits when ddlling holes in
bdck, tile, concrete, etc.
•Tum adjustment knob on hammer ddll to
hammer mode.
•Apply light pressure and medium speed for best
results in brick.
•Apply additional pressure and high speed for hard
matedals such as concrete.
•When ddlling holes in tile, practice on a scrap
piece to determine the best speed and pressure.
POWER CORD
See Figure 12.
Your new hammer ddll has a 10 ft. power cord that
stays soft and flexible in cold weather. The plug
design is shaped so that itwon't snag on your work
dudng use. A molded cord clip on the plug makes
cord storage easier.
MOLDEDCORDCUP
lOFT. CORD
Fig. 12
13
CHUCK REMOVAL
See Figures 13, 14, and 15.
The chuck must be removed in order to use some
accessories. -
To remove:
•Unplug your hammer drill.
_k WARNING: Failure to unplug your hammer ddll
could result in accidental starting causing sedous
injury.
Line up hole in spindle with slot in gear housing
and insert a 118in. diameter nail or pin in
spindle shaft.
•Insert a 5/16 in. or larger hex key wrench (allen
wrench) into the chuck of your drill and tighten
the chuck jaws securely.
•Tap the hex key sharply with a mallet in a
clockwise direction. See Figure 13. This will
loosen the screw in the chuck for easy removal.
MALLET
1/8In. DIAMETER
)R PIN
KEYLESS
CHUCK
HEXKEY
WRENCH Fig. 13
•Open chuck jaws and remove heX"key wrench.
• Remove the chuck screw by turning it in a
clockwise direction. See Figure 14. Note: The
screw has left hand threads.
SCREWDRIVER
•Insert hex key wrench into chuck and tighten
chuck jaws securely. Tap sharply with a mallet
in acounterclockwise direction. This will loosen
chuck on the spindle. It can now be unscrewed
by hand. See Figure 15.
Fig. 15
•Unlock spindle by removing nail or pin from slot
in gear housing.
TO RETIGHTEN A LOOSE CHUCK
The chuck may at times become loose on the spindle
and develop awobble. Also, the chuck screw may
become loose causing the chuckjaws to bind and
prevent them from closing. To tighten, follow these
steps:
• Unplug your hammer drill.
WARNING: Failure to unplug your hammer drill
could result in accidental starting causing serious
injury.
Line up hole in spindle with slot in gear housing
and insert a 118 in. diameter nail or pin in
spindle shaft.
Insert hex key wrench into chuck and tighten
chuckjaws securely, Tap hex key wrench sharply
with a mallet in aclockwise direction. This will
tighten chuck on the spindle.
Open the chuck jaws and remove hex key
wrench.
Tighten the chuck screw. Note: The chuck screw
has left hand threads.
Unlock spindle by removing nail or pin from slot
in gear housing.
!Fig. 14
14
_i WARNING: When servicing, use only identical
Craftsman replacement pads. Use of any other
part may create a hazard or cause product
damage,_
GENERAL
Only the parts shown on parts list, page seventeen,
are intended to be repaired or replaced by the
customer. All other parts represent an important part
of the double insulation system and should be
serviced only by a qualified Sears service technician.
Avoid using solvents when cleaning plastic parts.
Most plastics are susceptible to damage from various
types of commemial solvents and may be damaged
by their use. Use clean cloths to remove dirt, carbon
dust, etc.
WARNING: Do not at any time let brake fluids,
gasoline, petroleum-based products, penetrating
oils, etc. come in contact with plastic parts. They
contain chemicals that can damage, weaken or
destroy plastic.
It has been found that electdc tools are subject to
accelerated wear and possible premature failure when
they are used on fiberglass boats, sports cars,
wallboard, spackling compounds, or plaster. The
chips and grindings from these materials are highly
abrasive to electric tool parts such as bearings,
brushes, commutators, etc. Consequently, it is not
recommended that this tool be used for extended
work on any fiberglass material, wallboard, spackling
compounds, or plaster. During any use on these
materials it is extremely important that the tool is
cleaned frequently by blowing with an air jet.
WARNING: Always wear safety goggles or
safety glasses with side shields duringpower tool
operation or when blowing dust. If operation is
dusty, also wear a dust mask.
LUBRICATION
All of the bearings in this tool are lubricated with a
sufficient amount of highgrade lubricantfor the life of
the unit under normal operating conditions. Therefore,
no further lubrication is required.
EXTENSION CORDS
The use of any extension cord will cause some loss of
power. To keep the loss to a minimum and to prevent
tool overheating, use an extension cord that is heavy
enough to carry the current the tool will draw.
A wire gage size (A.W.G.) of at least 16 is
recommended for an extension cord 100 feet or less
in length. When working outdoors, use an extension
cord that is suitable for outdoor use. The cord'sjacket
will be marked WA.
_k CAUTION: Keep extension cords away from the
ddUingarea and positionthe cord so that it will
not get caught on lumber, tools, etc., during
drillingoperation.
WARNING: Check extension cords before each
use. If damaged, replace immediately. Never use
tool with a damaged cord since touching the
damaged area couldcause electrical shock
resulting in serious injury.
Extension cords suitable for use with your hammer drill
are available at your nearest Sears Retail Store.
15
CRAFTSMAN 3/8 in. HAMMER DRILL -- MODEL NUMBER 315.277180
SEE NOTE "A" PAGE 17
2
7
3
6
16
CRAFTSMAN 318 in. HAMMER DRILL mMODEL NO. 315.277180
The model number will be found on a plate attached to the motor housing. Always mention the model number in all correspondence regarding your
3/8 in. HAMMER DRILL or when ordering repair parts.
SEE BACK PAGE FOR PARTS ORDERING INSTRUCTIONS
PARTS LIST
Key No. Pad No.
1 616478-002
2 973754-002
3 975104-001
4 975103-001
5 975250-001
6975113-001
7 975253-001
8 975252-001
972000-381
Description Quan.
* Screw (#12-28 x 0.9 in. Fil. Hd., Left Hano) ........................................................ 1
Chuck ................................................................................................................ 1
Data Plate ............................................................................................................ 1
Logo Plate .............................. ............................................................................. 1
Auxiliary Handle .................................................................................................. 1
Depth Gage Rod ................................................................................................. 1
Wear Plate ........................................................................................................... 1
Wing Screw (M6 x 40 mm) .................................................................................. 1
Owner's Manual
NOTE: "A"--The assembly shown represents an important part of the Double Insulated System.To,avoid the possibility of altersUon or damage
to the system, service should be performed by your nearest Sears Repair Center. Contact your nearest Sears Retail Store for Service Center
information.
* Standard Hardware Item mMay Be Purchased Locally.
17
Forthe repairorreplacementpartsyouneed
delivereddirectlytoyourhome
Call7 am - 7 pro,7 daysaweek
1-800-366-PART
(1-800-366-7278)
Forrepairservice
Call24 hoursa day,7 daysaweek
1-8OO-4-REPAIR
(1-800-473-7247)
Forthelocationofa
SearsPartsandRepairCenterinyourarea
Call24 hoursa day,7 daysa week
1-800-488-1222
Themodelnumberofthistoolwill befoundona serial plate
attachedto themotorhousing.Whenrequestingserviceor
oi;d-eHngparts,alwaysprovidethefollowinginformation:
•ProductName
3/8 in. Professional
HammerDrill
•ModelNumber
315.277180 SEARS
•PartName • PartNumber America's FtepairSpecia/ists

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