Care And Maintenance - Hilti DX 351-BT Manual

8

Care and maintenance

8.1 Care of the fastening tool
For cleaning, use only the cleaning accessories supplied by Hilti, or material of equivalent quality. Do not,
under any circumstances, use spray cleaning equipment, compressed air, high-pressure cleaning equipment,
solvents or water for cleaning.
For maintenance and lubrication of the fastening-tool components, always use Hilti spray. Never use
greases, because the use of greases can lead to malfunctions of the fastening tool.
CAUTION
Risk of damage to the fastening tool! Foreign bodies can jam in the fastening tool and damage the
fastening tool when a cartridge is fired.
▶ Prevent foreign bodies from penetrating into the interior of the fastening tool.
▶ Clean the exterior of the fastening tool with a slightly damp cloth at regular intervals.
▶ Keep the air vents clear and operate the fastening tool only with clear air vents.
8.2 Maintenance
WARNING
Dangerous substances! The deposits inside DX tools contain substances that may present a health hazard.
▶ Do not inhale dust or dirt while cleaning.
▶ Keep dust and dirt away from foodstuffs.
▶ Wash your hands after cleaning the fastening tool.
▶ Clean the fastening tool and use Hilti spray as stated in the operating instructions. This will help prevent
malfunctions.
1. Regularly check all external parts of the fastening tool for damage.
2. Regularly check all operating controls to ensure that they work properly.
3. Use the fastening tool only with suitable cartridges and the recommended energy setting.
▶ Use of the wrong cartridges or incorrect driving-energy settings can lead to premature failure of the
fastening tool.
8.3 Servicing the tool
Service the tool in the following situations:
▶ If energy fluctuations occur (evidenced by irregularities in fastener penetration depth).
▶ If cartridge misfires occur (the cartridge is not fired).
▶ If the tool becomes noticeably less easy to operate:
▶ If the required contact pressure increases noticeably.
▶ If triggering resistance increases.
▶ If the adjuster for driving energy is stiff.
▶ If the cartridge strip is difficult to remove.
8.4 Cleaning fastening tool 10,
1. Disassemble the fastening tool. → page 22
2. Clean the fastener guide (bore and thread of the locking sleeve).
3. Clean the cartridge barrel with the cleaning rod supplied for the purpose.
4. Clean the outside and inside of the piston guide (rear of the piston guide), cartridge chamber (1) and hole
for power regulation (2) in the end face of the piston guide.
Do not use a metal brush to clean the O-ring and do not accidentally remove the O-ring. Metal
brushes can damage the O-ring.
5. Lightly oil the inside of the piston guide.
6. Check O-ring (3) for wear and damage and check that the O-ring is correctly seated.
7. Oil the outside of the piston guide or alternatively oil the inside of the locking sleeve.
8. Clean the inside and outside of the power-tool housing.
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