Servicing The Tool - Hilti DX 35 Manual De Instrucciones

Use the tool only with the recommended cartridges. An
incorrect cartridge selection can lead to a premature
failure of parts of the tool.
CAUTION
Dirt and residues in DX tools contain substances that
may be hazardous to your health. Do not inhale dust /
or dirt from cleaning. Keep the dust or dirt away from
foodstuffs. Wash your hands after cleaning the tool.
Never use grease for the maintenance/lubrication of
parts of the tool. This may lead to malfunctions. Use
only Hilti lubricant spray or a product of equivalent
quality.

9.3 Servicing the tool

Service the tool if fastener driving power is found to be
inconsistent, if cartridges misfire or if parts of the tool
no longer move or operate smoothly and easily. In other
words, The required contact pressure increases, trigger
resistance increases, the cartridge magazine strip can
only be removed with a degree of difficulty or the cycling
action becomes stiff.
9.3.1 Disassembling the tool 6
CAUTION
Forcing the spring clip into place may cause it to jump off
with considerable energy. Take care to avoid injuring
yourself or others. Hold the assembly with its back
facing downwards.
1. Lift the spring clip with a screwdriver or a nail and
turn. Pull the stop backwards and remove.
2. Pull out the insert.
3. Press the spring clip away with a screwdriver or
a nail. If need be, replace the spring clip if it is
damaged.
4. Separate the baseplate together with the fastener
guide from the piston guide.
5. Remove the piston.
6. Allow the fastener guide to slide out of the baseplate.
NOTE If the fastener guide does not slide of its own
accord, prod it out with the piston.
9.3.2 Checking the piston for wear
NOTE
Never use a worn or damaged piston and do not attempt
to manipulate or modify the piston.
Replace the piston when:
- the piston is broken
- the piston is badly worn or chipped (e.g. a 90° segment
broken away).
- the piston rings are cracked or missing.
- the piston is bent (check by rolling the piston on a
smooth, flat surface).
9.3.3 Checking the fastener guide for wear
Replace the fastener guide if the tubular section is dam-
aged (e.g. bent, widened or cracked).
9.3.4 Checking the spring clip for wear
Replace the spring clip if it is badly worn or bent.
9.3.5 Cleaning
Clean the tool at least once a week or, respectively,
immediately after each period of heavy use (after driving
approx. 3,000 nails).
Use the appropriate brushes to clean the individual parts:
1. Clean the fastener guide and sleeve inside and out.
2. Clean the piston and piston rings until the parts
move freely.
3. Clean the piston guide, inside and out.
4. Clean the inside of the housing.
9.3.6 Lubrication
Spray the cleaned parts lightly with the Hilti lubricant
spray supplied. Use only Hilti lubricant spray or a product
of comparable quality.
9.3.7 Assembling the tool 7
NOTE
Handle the small parts carefully. They could get lost.
1. Introduce the fastener guide into the baseplate.
2. Slide the piston to the end of the piston guide.
3. Place the baseplate together with the fastener guide
onto the piston guide.
NOTE Grooves for the stop must be in line.
4. Press the spring clip into the opening of the piston
guide.
5. Introduce the insert into the tool so that the groove
aligns with the opening for the stop.
6. Insert the stop and pull the spring clip over it with a
screwdriver or a nail.
9.3.8 Checking
After carrying out care and maintenance, check that all
protective and safety devices are fitted and that they
function faultlessly.
NOTE
The tool can be checked, as follows, to determine
whether it is ready to fire: Press the nose of the un-
loaded tool (i.e. no cartridges or fastener in the tool)
firmly against a hard surface and pull the trigger. A clearly
heard click from the trigger mechanism indicates that the
tool was ready to fire.
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