Hilti R4DW-X S, Operating Instructions Manual, Page: 7 / 36

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e n
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6 mm Allen Wrench
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10 mm Open End Wrench
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17 mm Open End Wrench
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2 mm Pin Punch
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Hammer
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Flat blade screw driver
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Hilti 0-ring grease (Item no 12423)
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0-ring Pick or Scribe
8.2 Trou b leshooting
(Check part numbers against exploded parts drawings)
If a problem arises, follow these steps before servicing
the tool:
1. Make sure the compressor is operating at the correct
pressure and all valves to the supply line are open.
2. Make sure moisture is not interfering with the free
flow of air. To do this, drain the compressor storage
tank and moisture filter daily. (Storage tank drains are
usually located on the bottom of the tank(s). The mois-
ture filter is generally located next to the regulator.)
3. Check the regulator(s) for the correct air pressure and
that all valves to the supply line are open.
4. Check the fittings and hoses for kinks, leaks, or block-
ages and ensure they are 3 /
8
” diameter in size for best
operation.
5. If a tool known to be in working condition is available,
connect it in place of the malfunctioning tool and test
it to see if the problem disappears. If the problem con-
tinues, then the problem is probably not in the tool.
IMPORTANT NOTE: If servicing a tool is required, ALWAYS
disconnect the tool from the air supply and empty the
magazine before attempting to service the tool.
Symptom Posi b le Cause Remedy
Fastener Skipping Air Pressure too low Increase air pressure to the minimum required
to eliminate skipping — Max 175 PSI
Incorrect lubrication Refer to setup instructions for proper
cleaning and lubrication
Obstruction in nosepiece (#8) Clear obstruction using nylon brush or
compressed air
Contact your Hilti Representative
Pusher (#47) not moving freely or Check for easy movement. Clean or replace
nails jamming in magazine (#48) magazine and/or pusher as necessary
Scroll spring (#51) damaged Replace scroll spring. Contact your Hilti
Representative
Driver/Blade Assy (#16) bent or Replace Driver/Blade Assy (#16)
damaged
Piston Driver 0-ring (#17) worn
Replace 0-ring (#17) Kit #12657
Bumper (#12) worn or damaged Replace bumper as necessary
Fastener Standoff Air pressure too low Increase pressure to minimum necessary
to drive the fastener — Max.175 PSI
Compressor too small Consult your local Hilti Representative
Fastener Standoff Defective regulator or gauge Repair or replace as necessary
Incorrect lubrication Refer to set-up instructions for proper
cleaning and lubrication
Incorrect nail Consult your local Hilti Representative
Driver blade broken Replace Driver/Blade Assy (#16)
Piston Driver 0-ring (#17) worn or Replace 0-ring (#17) Kit #12657
damaged
Fastener Overdrive Air pressure too high Decrease to minimum pressure required to
just sink the fastener
Incorrect nail Consult your local Hilti Representative
Bumper (#12) worn Check and replace as necessary
9. R4DW-X S Trou b leshooting Guide
Printed: 07.07.2013 | Doc-Nr: PUB / 5070502 / 000 / 00