Pointed and narrow flat chisels:
Forge chisels at about 900°C to 1000°C (bright red
to vright yellow red). Afterwards, quench in oil. On
forging and quenching the chisel in this way, it will
be given optimal treatment. No further hardening
and tempering is necessary.
Wide-flat chisel:
As the cross-section of a worn wide-flat chisel is not
large enough for forging, this chisel should not be
reforged but onyl resharpened. The blade os long
enough to be resharpened several times.
Resharpening:
Pointed
chisel
Narrow
flat
chisel
Wide
flat
chisel
Fig. 1: Cleaning of connection ends
The chuck is not incorporated in the lubricating
system of the TE104. The connection ends of chi-
sels, etc. must, therefore, be cleaned regularly and
lubricated sparingly with Hilti grease.
Holding the front section:
The cylinder section has been insulated against heat
and designed for a good hold. Operators, however,
should wear suitable gloves.
Start-up in cold surroundings
The TE 104 will start up quicker if its jolted once
briefly against the work surface just after switching
on.
Operating when chiselling
Fig. 2: Attach the chisel chuck (change the need-
le chuck.)
Pull forward locking ring against spring pressure and
mount chuck on spindle. Release locking ring and
turn slightly until locking balls engage.
Note: The chisel chuck can only be attached
when the chuck is open.
Fig. 3: Insert/change a chisel.
Turn chuck counter-clockwise (symbol
( )
). Insert
chisel as far as it will go. Turn chuck in opposite
direction and lock chisel (symbol
( )
).
Position the chisel blade.
Press forward locking
sleeve, turn chuck with inserted chisel more or less
to desired position, release locking ring, and conti-
nue turning until locking ring engages.
Select the hammering power.
Regulate hamme-
ring power from 0 to 100%, as required, using elec-
tronic switch. The TE104 runs continuously without
maintaining pressure on the switch. Press switch
again to switch off.
Operation when needle scaling
Attach the needle chuck (change the chisel
chuck.)
Proceed as for chisel chuck, fig. 3.
Fig.4: Select/adjust needle protector.
Select a
round or oval needle protector depending on the sca-
ling job i.e. a flat, corner or edge surface. Adjust
needle protrusion and secure (open) protector using
wing nut.
Fig. 5: Change the needle set.
Press needle holder
towards locking ring and then turn. Spring tension
separates needle holder from locking sleeve. Need-
les can be replaced separately or as a set. Apply only
moderate pressure when working.
Caution! Insufficient pressure will shorten the
life. (Make sure the tool is always in contact with
the base material.)
Servicing
Electric tools must comply with the respective safety
regulations. Servicing must, therefore, be carried out
only by qualified electrians/electrical specialists. The
use of original Hilti parts ensures an optimum of
safety.
Chisel reforging and
resharpening
When resharpening wide-flat, narrow-flat and
pointed chisels which are not badly worn, take care
to avoid overheating (no discoloration). Resharpening
limit: to a remaining length of 130 mm from connec-
tion end.
15°
60°
4
15°
60°
4
60°
4
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Printed: 07.07.2013 | Doc-Nr: PUB / 5070789 / 000 / 00
