Care And Maintenance - Hilti DX 460 SM Operating Instructions Manual

8. Care and maintenance

8.1 Care of the tool
The outer casing of the tool is manufactured from impact-
resistant plastic. The grip comprises a synthetic rubber
section.
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The ventilation slots must be unobstructed and kept
clean at all times. Do not permit foreign objects to enter
the interior of the tool. Use a slightly damp cloth to clean
the outside of the tool at regular intervals. Do not use a
spray or steam-cleaning system for cleaning.
8.2 Maintenance
Check all external parts of the tool for damage at regu-
lar intervals and check that all controls operate proper-
ly. Do not operate the tool when parts are damaged or
when the controls do not operate properly. If necessary,
have the tool repaired at a Hilti service center.
Servicing the tool if:
1. Cartridge misfires or
2. Driving power is inconsistent
3. If you notice:
– Increased contact pressure
– Increased trigger force
– Power regulation hard to adjust
– Cartridge strip is difficult to remove
CAUTION while cleaning the tool:
● Never use grease for maintenance/lubrication of tool
parts. This may strongly affect the functionality of the
tool. Use only Hilti spray or such of equivalent quality.
● Dirt from DX tool contains substances that could be
endangering your health.
– Do not breath in the dust from cleaning
– Keep dust away from food
– Wash your hands after cleaning the tool
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8.3 Daily maintenance and inspection / Cleaning
and servicing (minor service)
1. Ensure that there is no cartridge strip in the tool. If
there is a cartridge strip in the tool, remove it by hand
from the tool.
2. To disassemble the DX 460 SM tool push down the
small locking button
3. Unscrew the MX SM fastener magazine
4. Pull the MX SM magazine with the buffer and the pis-
ton out of the tool.
Note: If the piston sticks in the tool, the entire piston
guide must be unlocked and unscrewed. (see "Mal-
8
Printed: 08.07.2013 | Doc-Nr: PUB / 5129667 / 000 / 01
CAUTION
■ The tool can get hot while oper-
ating.
■ You could burn your hands.
■ Do not disassemble the tool while
it is hot. Let the tool cool down.
functions and remedies"). Then push out the piston
through the cartridge chamber by using the supplied
ram-rod.
5. Check the buffer and the piston for wear
Replace the buffer X-460B by bending it to separate
it from the magazine if
– the metal ring is loose or broken
– it stays no longer on the magazine interface
– excessive uneven wear under the metal ring
Replace the piston X-460-PSM if it shows signs of
wear
– it is broken, it has cracks
– the tip is heavily worn (e.g. a 90 degree segment is
chipped off)
– it is bent (check through rolling on an even surface)
Note: Do not use worn piston and do not manipulate
the piston.
6. Clean the piston and gas return unit
– clean the piston rings with the supplied flat wire brush
– spray the piston rings slightly with Hilti spray
– clean the exhaust gas return unit inside using the sup-
plied big round brush.
– spray the gas return unit slightly with Hilti spray
7. Clean the MX SM fastener magazine
– separate the buffer from the MX SM fastener maga-
zine by bending
– clean the magazine outside using the supplied flat
wire brush
– clean the magazine inside using the supplied small
round brush.
Note: It is important to clean out any small fragments
of the plastic strip from the magazine fastener guide.
Spray the transport slider and the magazine thread
slightly with Hilti spray.
Note: Spraying oil onto the rubber buffer should be
avoided.
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8.4 Cleaning and servicing (major service)
Note: A major service should be carried out every 10.000
fastenings or when a piston sticks in the piston guide.
First carry out the minor service as described in point
8.3, then:
1. Ensure that there is no cartridge strip in the tool. If
there is a cartridge strip in the tool, remove it by hand
from the tool.
2. To disassemble the exhaust gas return unit from the
DX 460 SM tool unlock the push button on the grip
section of the tool
3. Unscrew the exhaust gas return unit
4. Clean the exhaust gas return unit
– clean the spring of the gas return with the supplied
flat brush
– clean the temperature sleeve with the flat brush
– clean the two holes in the cartridge chamber at the
end-face using the small round brush.
– clean the inside of the gas return unit using the big
round brush
– spray the gas return unit slightly (spring, cartridge
chamber and the housing inside) with Hilti spray.