TE905
Operating instructions
Mode d’emploi
Manual de instrucciones
*255223*
255223
General safety rules
1. WARNING!
Read and understand all instructions.
Failure to follow all instructions listed below may result
in electric shock, fire and/or serious personal injury.
SAVE THESE INSTRUCTIONS
2. Work Area
2.1 Keep your work area clean and well lit. Cluttered
benches and dark areas invite accidents.
2.2 Do not operate power tools in explosive atmos-
pheres, such as in the presence of flammable liquids,
gases, or dust. Power tools create sparks which may
ignite the dust or fumes.
2.3 Keep bystanders, children and visitors away while
operating a power tool. Distractions can cause you to
lose control.
3. Electrical Safety
3.1 Grounded tools must be plugged into an outlet
properly installed and grounded in accordance with
all codes and ordinances. Never remove the grounding prong or modify the plug in any way. Do not use
any adaptor plugs. Check with a qualified electrician
if you are in doubt as to whether the outlet is properly
grounded. If the tools should electrically malfunction or
break down, grounding provides a low resistance path to
carry electricity away from the user.
Applicable only to Class I (grounded) tools.
3.2 Double insulated tools are equipped with a polar-
ized plug (one blade is wider than the other). This plug
will fit in a polarized 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 a
polarized outlet. Do not change the plug in any way.
Double insulation Z eliminates the need for the three-wire
grounded power cord and grounded power supply system.
Applicable only to Class II tools.
3.3 Avoid body contact with grounded surfaces such
as pipes, radiators, ranges and refrigerators. There is
an increased risk of electric shock if your body is grounded.
3.4 Don’t expose power tools to rain or wet condi-
tions. Water entering a power tool will increase the risk of
electric shock.
This instruction need not be provided for tools classified
watertight or splashproof.
3.5 Do not abuse the cord. Never use the cord to car-
ry the tools or pull the plug from an outlet. Keep cord
away from heat, oil, sharp edges or moving parts.
Replace damaged cords immediately. Damaged cords
increase the risk of electric shock.
3.6 When operating a power tool outside, use an out-
door extension cord marked «W-A» or «W». These
cords are rated for outdoor use and reduce the risk of
electric shock.
4. Personal Safety
4.1 Stay alert, watch what you are doing and use common sense when operating a power tool. Do not use a
tool while tired or under the influence of drugs, alcohol, or medication. A moment of inattention while operat-
ing power tools may result in serious personal injury.
4.2. Dress properly. Do not wear loose clothing or
jewelry. Contain long hair. Keep your hair, clothing,
and gloves away from moving parts. Loose clothes,
jewelry, or long hair can be caught in moving parts.
4.3 Avoid accidental starting. Be sure switch is off
before plugging in. Carrying tools with your finger on the
switch or plugging in tools that have the switch on invites
accidents.
4.4 Remove adjusting keys or wrenches before turn-
ing the tool on. A wrench or a key that is left attached to
a rotating part of the tool may result in personal injury.
4.5 Do not overreach. Keep proper footing and bal-
ance at all times. Proper footing and balance enables
better control of the tool in unexpected situations.
4.6 Use safety equipment. Always wear eye protection.
Dust mask, non-skid safety shoes, hard hat or hearing
protection must be used for appropriate conditions.
5. Tool Use and Care
5.1 Use clamps or other practical way to secure and
support the workpiece to a stable platform. Holding
the workpiece by hand or against your body is unstable
and may lead to loss of control.
5.2 Do not force tool. Use the correct tool for your
application. The correct tool will do the job better and
safer at the rate for which it is designed.
5.3 Do not use tool if switch does not turn it on or off.
Any tool that cannot be controlled with the switch is dangerous and must be repaired.
5.4 Disconnect the plug from the power source
before making any adjustments, changing accessories, or storing the tool. Such preventive safety mea-
sures reduce the risk of starting the tool accidentally.
5.5 Store idle tools out of reach of children and other
untrained persons. Tools are dangerous in the hands of
untrained users.
5.6 Maintain tools with care. Keep cutting tools sharp
and clean. Properly maintained tools with sharp cutting
edges are less likely to bind and are easier to control.
5.7 Check for misalignment or binding of moving
parts, breakage of parts and any other condition that
may affect the tools operation. If damaged, have the
tool serviced before using. Many accidents are caused
by poorly maintained tools.
5.8 Use only accessories that are recommended by
the manufacturer for your model. Accessories that may
be suitable for one tool may become hazardous when
used on another tool.
6. Service
6.1 Tool service must be performed only by qualified
repair personnel. Service or maintenance performed by
unqualified personnel could result in a risk of injury.
6.2 When servicing a tool, use only identical replace-
ment parts. Follow instructions in the Maintenance
section of this manual. Use of unauthorized parts or fail-
ure to follow Maintenance Instructions may create a risk
of electric shock or injury.
Additional Specific Safety Rules:
101 Hold tools by insulated gripping surfaces when
performing an operation where the cutting tool may
contact hidden wiring or its own cord. Contact with a
«live» wire will make exposed metal parts of the tool «live»
and shock the operator.
102 Wear ear protectors when using the tool for
extended periods. Prolonged exposure to high intensity
noise can cause hearing loss.
Hilti TE 905 breaker
Kit supplied with the machine
Plastic toolbox, cleaning cloth, Hilti insert
tool grease and operating instructions
Technical data
Power input: 1550 W
Voltage (versions): 120 V
Frequency: 50–60 Hz
Machine weight: 11.3 kg
Dimensions: 680×11 0×180 mm
Hammering speed under load: 2200 blows/min.
Single impact energy: 20 joules
Chiselling performance in
medium-hard concrete: 1300 cm
3
Chisels: Pointed, flat, wide flat, asphalt and flexible chisels
Bushing, tamping and ground-rod ramming tools
Chuck: TE-S
Permanent lubrication
Adjustable side handle
Foam-rubber padded grip and side handle
Automatic cut-out carbon brushes
Electronic speed (r.p.m.) limitation
On/off switch
Vibration reduction with built-in AVR system
Service indicator LED
Protection class I (grounded tool)
Right of technical modifications reserved
1
2
3
4
Do not use this product in any way other than as directed by these operating
instructions.
Observe the national regulations applicable to the operation of this machine.
The operating instructions should always be kept with the machine!
Eye protection
must be worn
Ear protection
must be worn
Safety gloves
must be worn
Protective earthing
This Product is
UL listed and CSA certified
R
Chisel grinding angles
Pointed
chisel
Flat
chisel
Wide flat
chisel
Operating the TE905
breaker
Before starting work
Read the safety precautions.
The machine should be used only for the applications for which it is intended, i.e. chiselling, bushing, packing, cutting and driving
in mineral materials such as concrete, masonry and asphalt etc. It is not suitable for
use on metal surfaces.
The breaker must be in good working order
and used as directed (side handle firmly tightened in the correct position and chisel secured properly in the chuck).
The electric mains supply must correspond
to the information printed on the rating plate.
The machine is double insulated. Earthing /
grounding of this machine is not permitted.
Fig. 1: Cleaning chisel connection ends
The chuck is not incorporated in the machine’s
lubrication system. The connection ends of
chisels and other tools must therefore be
cleaned regularly and lubricated with Hilti
grease. Use a dust shield on the chisel.
Starting time at low temperatures
The starting time (until the hammering
action begins to operate) can be reduced by
jolting the chisel against the working surface
as the machine is switched on.
Operation
While working, hold the machine securely with
both hands, using the grip and side handle.
Check the security of the stance or position
from which you are working at regular intervals (ladders do not provide a secure stance
and present an accident hazard).
Do not apply excessive pressure – this will not
increase the machine’s performance. Simply
position and guide the chisel.
Fig. 2: Inserting a chisel
Insert the chisel by pushing it into the chuck
in the desired position, against spring pressure, until it locks automatically. To remove
the chisel, pull back the locking sleeve and
pull out the chisel.
Figure 3: Side handle
Move the side handle to the desired position
and clamp it securely by tightening the knob.
Fig. 4: Beginning work
Switch on the breaker and bring the blade
of the chisel into contact with the work surface. It is not necessary to apply constant finger pressure to the switch as it remains in the
ON position for sustained operation.
Servicing
The TE905 is equipped with a service indicator LED and automatic cut-out carbon
brushes. When the LED lights or when the
automatic cut-out brushes subsequently
break the power circuit, the machine must
be serviced by Hilti. Failure to observe this
point could result in expensive consequential damage to the machine.
Electric tools must comply with the applicable safety regulations. Servicing, therefore,
may be carried out only by recognised electrical specialists. The use of original Hilti parts
ensures optimum safety.
Insert tool reconditioning
Insert tool reconditioning should be carried out only by authorised specialists.
If the blade of a pointed, flat or wide-flat chisel is only slightly worn, it can be resharp-
ened by grinding. Note: Ensure that the surface of the chisel does not overheat when
grinding (no discoloration!).
If the blade of a pointed or flat chisel is
badly worn, it requires to be reforged. Heat
the tip of the chisel (approx. 80 mm) to
approx. 1000–1100°C (bright yellow-red to
yellow) and forge to shape. Allow the chisel
to cool slowly to room temperature (avoid
draughts!). Do not reharden and temper
the chisel.
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