3
en
6. Cold weather (40°F for colder) operation
6.1 Warm up the tool
●
If possible, store the tool overnight in a warm place.
●
OR - set the tool in a warm spot such as in a warm
vehicle. NEVER expose the tool to an open flame.
●
OR - Free-fire the tool (shoot without fasteners) at a
pressure of 25 PSI to gradually warm up moving parts.
NEVER free-fire the tool at high pressure.
6.2 Use a suitable lubricant
●
“Kilfrost”, a special lubricant that prevents moisture
buildup and ice formation in cold weather, is available
from your Hilti Representative.
7. Preventive Maintenance
The maintenance schedule required for your tool will
vary with such factors as amount of use, storage con-
ditions, air quality, humidity, and outside temperature.
It is important for each user to establish and maintain a
schedule based upon his usage.
-CAUTION-
when cleaning:
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 comparable
quality.
The residues deposited inside tools contain substances
that may be injurious to your health:
– Do not inhale any dust or dirt while cleaning.
– Keep the dust or dirt away from foodstuffs.
– Wash your hands after cleaning the tool.
7.1 Cleaning
Disassemble the tool monthly and wash away sludge
and dirt with kerosene to keep the tool operating effi-
ciently; be certain to re-lubricate the 0-rings with spe-
cial 0-ring lubricant (Hilti item no 12423) and re-oil the
tool after each clean ing. NEVER use Diesel fuel or flam-
mable cleaning solvents to clean the tool.
7.2 Daily lubrication
Follow the “Lubricate The Tool” instructions under Tool
Set-up and Operation.
7.3 Bumper
Check for surface deterioration monthly. Discoloration
is first sign of wear.
7.4 Inspection
Daily inspect screws and nuts on tool. Tighten any which
may have loosened during operation.
7.5 0-ring
Check monthly for deterioration. If an 0-ring appears
worn, replace it, along with the others in that assembly.
Lubricate the replacement 0-rings with special 0-ring
grease (Hilti item no 12423) before reassembling the
tool.
7.6 Safety yoke
Inspect daily to ensure that the safety mechanism is
operating properly and that it is not binding from wood
particles, sawdust and other debris.
7.7 Compressor
Maintain in accordance with manufacturer’s recom-
mendations. NEVER operate a compressor at pressures
or speeds in excess of those recommended by the man-
ufacturer.
7.8 Compressor air filters
Clean or replace compressor air filter cartridge regularly.
7.9 Eliminate air line moisture
By draining the compressor storage tank daily in those
areas with high relative humidity.
By using an air line moisture filter and emptying it fre-
quently.
By avoiding the use of an excessive number of connec-
tions in long air lines.
8. Replacement Parts and Repair Service
Your Hilti air tool is precision engineered for safety and
durability. NEVER attempt to modify parts, since this
can compromise the built-in safety and shorten the life
of the tool.
When servicing, use only identical Hilti replacement
parts. Replacement parts shown on the parts list are
available through your local Hilti representative or by
calling Customer Service at 1-800-879-8000.
Hilti operates a nationwide network of Repair Centers,
and rapid service is a hallmark of the Hilti system. If your
tool requires service or warranty repairs, contact your
local Hilti Representative or Customer Service at 1-800-
879-8000.
8.1 Tools needed for R4X12 S service
●
4 mm AIIen Wrench
●
5 mm Allen Wrench
Printed: 07.07.2013 | Doc-Nr: PUB / 5070503 / 000 / 00
