Hilti DX 5 GR, Manual

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English 23
◁
The piston is bent (check by rolling the piston on a smooth, flat surface).
2. The buffer must be replaced in the following cases:
◁
The metal ring of the buffer is loose or broken.
◁ The buffer no longer holds on the fastener guide.
◁ The rubber is badly worn at certain points under the metal ring.
6.6 Checking the fastener guide for wear 7
1. Check the fastener guide for wear and replace it if part of it is damaged (e.g. broken, bent, widened or
cracked).
2. Contact Hilti Service if necessary.
6.7 Cleaning and lubricating the single-fastener tool 8
1. Spray the piston rings lightly with oil and then use the flat brush to clean them using the flat brush until
the rings are free to move.
2. Use the flat brush to clean the thread on the fastener guide.
3. Use the large round brush to clean the inside of the housing.
4. Dismantle the exhaust gas piston return unit.
5. Clean the exhaust gas piston return unit.
6. Spray the cleaned parts with the supplied Hilti lubricant spray.
Note
Use only Hilti lubricant spray or a product of comparable quality. Use of other lubricants may
damage the tool.
7. Fit the exhaust gas piston return unit.
8. Assemble the tool.
6.8 Assembling the single-fastener tool 9
1. Check whether there is a cartridge in the tool, and remove it if there is.
2. Fit the exhaust gas piston return unit.
3. Fit the piston.
4. Fit the buffer onto the fastener guide.
5. Screw on the fastener guide.
6.9 Final check of the tool
1. After carrying out care and maintenance work, check that all safety devices are fitted and that they are
functioning correctly.
2. After checking the tool, press and hold the pushbutton for 10 - 12 seconds to reset the maintenance
counter.
7 Troubleshooting
7.1 Problems with the tool
Malfunction Possible cause Action to be taken
The piston gets stuck in the
base material.
The fastener is too short.
▶
Use a longer fastener.
The fastener has no washer.
▶
Use a fastener with washer for
applications on wood.
Driving power is too high.
▶
Reduce driving power (adjust
the power regulating wheel).
▶
Use a less powerful cartridge.
▶
Use the nails with a "top hat".
▶ Use the nails with a washer.
Higher force required to press
the tool against the surface.
Build-up of combustion residues. ▶ Service the tool.
Trigger resistance increases. Build-up of combustion residues. ▶ Service the tool.
Printed: 20.03.2017 | Doc-Nr: PUB / 5292603 / 000 / 01