Troubleshooting - Hilti DX 2 Operating Instructions Manual

9.3.2 Checking the piston for wear
NOTE
Never use a worn or damaged piston and do not tamper
with or modify the piston.
Replace the piston if:
- the piston is broken
- the piston is badly worn or chipped (e.g. a 90° segment
en
broken away).
- the piston ring is 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, cracked or broken).
9.3.4 Checking the spring clip for wear
Replace the spring clip if it is badly worn, bent or widened.
9.3.5 Cleaning 8 9 10 11
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 base plate, 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.

10 Troubleshooting

WARNING
The tool must be unloaded before taking any steps to remedy faults.
Fault
Higher force required to cycle
the tool.
Higher force required to press
the tool against the surface.
Trigger resistance increases.
The cartridge strip is difficult to
remove.
24
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 12
NOTE
Handle the small parts carefully. They could get lost.
1.
2.
3.
4.
5.
6.
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.
Possible cause
Build-up of combustion residues.
Build-up of combustion residues.
Build-up of combustion residues.
Build-up of combustion residues.
Fit the fastener guide into the base plate.
Slide the piston into the piston guide as far as it will
go.
Fit the base plate with the fastener guide onto the
piston guide.
NOTE The slots in the base plate and piston guide
must be in alignment with each other.
Press the spring clip into the recess.
Guide the assembly into the tool.
NOTE The slot in the piston and fastener guide must
be in alignment with the opening for the catch.
Press the catch into the opening and turn the annular
ring back over the catch.
NOTE The catch can be removed when in the
swiveled-out position and subsequently reinserted.
Remedy
Service the tool
See section: 9.3 Servicing the tool
Service the tool
See section: 9.3 Servicing the tool
Service the tool
See section: 9.3 Servicing the tool
Service the tool
See section: 9.3 Servicing the tool