Care And Maintenance - Hilti DX 460 Mode D'emploi

8. Care and maintenance

When this type of tool is used under normal operating
conditions, dirt and residues build up inside the tool
and functionally relevant parts are also subject to wear.
Regular inspections and maintenance are thus essen-
tial in order to ensure reliable operation. We recom-
mend that the tool is cleaned and the piston and piston
brake are checked at least weekly when the tool is sub-
jected to intensive use, and at the latest after driving
10,000 fasteners.
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.
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 centre.
■ 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.
Servicing the tool
The tool should be serviced if:
1. Cartridges misfire
2. Fastener driving power is inconsistent
3. If you notice that:
● contact pressure increases,
● trigger force increases,
● power regulation is difficult to adjust (stiff),
● the 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 Disassemble the tool
1. Ensure that no cartridge strip or fastener is loaded in
Printed: 08.07.2013 | Doc-Nr: PUB / 5069834 / 000 / 02
CAUTION
the tool. Remove the cartridge strip by pulling it
upwards out of the tool and remove the fastener from
the fastener guide.
2. Press the release button located at the side of the fas-
tener guide.
3. Unscrew the fastener guide / magazine.
4. Remove the buffer by bending it away from the fas-
tener guide / magazine.
5. Remove the piston.
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8.4 Check the buffer and piston for wear
Replace the buffer if:
● the metal ring is loose or broken,
● the buffer no longer holds on the fastener guide,
● excessive, uneven wear beneath the metal ring is
noticed.
Replace the piston if:
● it is broken,
● the tip is heavily worn (i.e. a 90° segment is chipped
off),
● piston rings are broken or missing,
● it is bent (check by rolling on an even surface).
CAUTION
Do not use worn pistons. Do not modify or grind pis-
tons.
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8.5 Check the fastener guide for wear
The nosepiece of the X-460-FIE and X-460-FIE-L fas-
tener guides should be replaced if the tubular section is
damaged (e.g. bent, widened or cracked). For instruc-
tions on replacing the nosepiece, please refer to sec-
tions 6.3 and 8.5.
1. Ensure that no cartridge strip or fastener is loaded
in the tool. Remove the cartridge strip by pulling it
upwards out of the tool and remove the fastener
from the fastener guide.
2. Press the release button on the side of the fastener
guide.
3. Unscrew the fastener guide.
4. Check the buffer and piston for wear (see care and
maintenance instructions).
5. Pull the moveable ring downwards and unscrew and
remove the clamping nut.
6. Replace the fastener guide nosepiece.
7. Pull the moveable ring downwards and screw on
the clamping nut.
8. Push the piston into the tool as far as it will go.
9. Press the buffer onto the fastener guide until it
engages.
10. Push the fastener guide firmly onto the exhaust gas
piston return unit.
11. Screw the fastener guide onto the tool until it engages.
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8.6 Clean the piston rings
1. Clean the piston rings with the flat brush until they
move freely..
2. Spray the piston rings lightly with Hilti spray.
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