Hilti TE 7-A Operating Instructions Manual page 14

1. Set the forward / reverse switch to the middle posi-
tion or remove the battery from the power tool.
2. Check that the connection end of the insert tool is
clean and lightly greased. Clean it and grease it if
necessary.
3. Check that the sealing lip of the dust shield is clean
and in good condition. Clean the dust shield if nec-
essary or replace it if the sealing lip is found to
be damaged (please refer to the "Care and mainte-
nance" section).
4. Push the insert tool into the chuck and rotate it while
applying slight pressure until it engages in the guide
grooves.
5. Push the insert tool further into the chuck until it is
heard to engage.
6. Check that the insert tool has engaged correctly by
pulling it.
7.1.2 Adjusting the depth gauge 6
1. Release the side handle clamping band by turning
the handle counterclockwise.
2. Pivot the side handle into the desired position.
3. Adjust the depth gauge to the desired drilling depth.
4. Tighten the side handle securely by turning the
grip section. This also clamps the depth gauge in
position.
7.1.3 Removing the insert tool 7
CAUTION
Wear protective gloves when changing insert tools as the
insert tool will get hot during use.
1. Set the forward / reverse switch to the middle posi-
tion or remove the battery from the power tool.
2. Open the chuck by pulling back the chuck release
sleeve.
3. Pull the insert tool out of the chuck.
7.1.4 Removing the chuck 8
CAUTION
Remove the depth gauge from the side handle and the
insert tool from the chuck in order to avoid injury.
NOTE
Set the selector switch to the "Chiseling" position before
removing the chuck.
1. Set the forward / reverse switch to the middle posi-
tion or remove the battery from the power tool.
2. Pull the chuck sleeve forward and hold it securely.
3. Remove the chuck by pulling it away from the power
tool.
7.1.5 Fitting the chuck 9
CAUTION
Remove the depth gauge from the side handle and the
insert tool from the chuck in order to avoid injury.
NOTE
Set the selector switch to the "Chiseling" position before
removing the chuck.
1. Set the forward / reverse switch to the middle posi-
tion or remove the battery from the power tool.
2. Grip the chuck sleeve, pull it forward and hold it
securely in this position.
3. Slide the chuck onto the guide tube from the front
and then release the sleeve.
4. Rotate the chuck until it is heard to engage.
7.2 Operation
CAUTION
Working on the material may cause it to splinter. Wear
eye protection and protective gloves. Wear breathing
protection if no dust removal system is used. Splin-
tering material presents a risk of injury to the eyes and
body.
CAUTION
The work generates noise. Wear ear protectors. Expo-
sure to noise can cause hearing loss.
7.2.1 Working at low temperatures
NOTE
The hammering mechanism works only when the power
tool has reached a minimum operating temperature.
Bring the drill bit briefly into contact with the base material
while allowing the power tool to run under no load until the
minimum operating temperature is reached. If necessary,
repeat this procedure until the hammering mechanism
begins to operate.
7.2.2 Drilling without hammering 10
1. Turn the function selector switch until it engages in
the "Drilling without hammering" position. Do not
operate the function selector switch while the motor
is running.
2. Bring the side handle into the desired position and
check that it is fitted correctly and secured.
3. Fit the battery.
4. Position the power tool and drill bit at the point
where the hole is to be drilled.
5. Press the control switch slowly (drill at a low speed
until the drill bit centers itself in the hole).
6. Press the control switch fully to continue drilling with
full power.
7. Adjust the pressure applied to the power tool ac-
cording to the material you are working on. This will
ensure the optimum rate of drilling progress.
7.2.3 Hammer drilling 11
1. Turn the function selector switch until it engages in
the "Hammer drilling" position. Do not operate the
function selector switch while the motor is running.
2. Bring the side handle into the desired position and
check that it is fitted correctly and secured.
en
9