Care And Maintenance - Hilti ST 1800 Operating Instructions Manual

7.5 Fitting the depth gauge
1. Unplug the supply cord from the electric socket.
2. Insert the tip of a screwdriver in the gap between the
tool and the protective sleeve. Pry the protective sleeve
away from the tool by turning the screwdriver.
3. Pull the protective sleeve off toward the front end of
the tool.
4. Push the depth gauge onto the tool from the front.
7.6 Depth gauge adjustment
The depth gauge is used when driving screws with sealing
washers.
Use a depth gauge suitable for the applicable sealing
washer diameter (accessory).
The depth gauge can be adjusted to ensure correct com-
pression of the sealing washer under the head of the
screw.
7.6.1 Adjusting the depth gauge
To decrease compression of sealing washer
1. Turn the depth gauge to the right (II).
To increase compression of sealing washer
1. Turn the depth gauge to the left. Compression of the
screw seal is increased (± 0.25 mm per click stop)
(III).

8. Care and maintenance

Unplug the supply cord from the mains socket.
8.1 Care of insert tools
Clean off dirt and dust deposits and protect your insert
tools from corrosion by wiping them from time to time
with an oil-soaked rag.
8.2 Care of the electric tool
-CAUTION-
Keep the power tool, especially its grip surfaces,
clean and free from oil and grease. Do not use clean-
ing agents which contain silicone.
The outer casing of the tool is made from impactre-
sistant plastic. Sections of the grip are made from a
synthetic rubber material. Never operate the tool when
the ventilation slots are blocked. Clean the ventilation
slots carefully using a dry brush. Do not permit for-
eign objects to enter the interior of the tool. Clean the
outside of the tool at regular intervals with a slightly
damp cloth. Do not use a spray, steam pressure clean-
ing equipment or running water for cleaning. This may
negatively affect the electrical safety of the tool.
Printed: 08.07.2013 | Doc-Nr: PUB / 5070705 / 000 / 01
7.7 Removing the depth gauge
1. Pull the depth gauge off the tool toward the front.
7.8 Changing bits
The chuck is equipped with a
size is standardized (DIN 3126/ ISO 1173).
1. Pull the depth gauge off the tool toward the front.
2. Pull the sleeve to the rear and hold it in this position.
3. The bit can then be pulled out or a different bit inserted.
4. Release the sleeve and allow it to return to its origi-
nal position.
5. Refit the depth gauge to the tool.
7.9 Removing a previously driven screw
1. Pull the depth gauge off the tool toward the front.
2. Bring the forward / reverse pushbutton into the "reverse"
position.
3. The tool can now be used to remove the screw.
8.3 Maintenance
Check all external parts of the tool for damage at reg-
ular intervals and check that all controls operate fault-
lessly. Do not operate the tool if parts are damaged or
when the controls do not function faultlessly. If nec-
essary, your electric tool should be repaired at a Hilti
repair center.
Repairs to the electrical section of the tool may be car-
ried out only by trained electrical specialists
8.4 Checks after care and maintenance
Check that the tool functions correctly (drive and remove
a screw) after carrying out care and maintenance.
" hexagon socket. This
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