DX 5 SM

About this documentation

• Read this documentation before initial operation or use. This is a prerequisite for safe, trouble-free handling and use of the product.
  
• Observe the safety instructions and warnings in this documentation and on the product.
  
• Always keep the operating instructions with the product and make sure that the operating instructions are with the product when it is given to other persons.
  

Explanation of symbols used

Warnings

Symbols in the documentation

	Read the operating instructions before use.
	Instructions for use and other useful information
	Dealing with recyclable materials
	Do not dispose of electric equipment and batteries as household waste

Symbols in the illustrations

	These numbers refer to the corresponding illustrations found at the beginning of these operating instructions
	The numbering reflects the sequence of operations shown in the illustrations and may deviate from the steps described in the text
	Item reference numbers are used in the overview illustrations and refer to the numbers used in the product overview section
	This symbol is intended to draw special attention to certain points when handling the product.

Product-dependent symbols

Symbols

	Warning! Observe the instructions.
	Wear a hard hat while working with the tool.
	Wear protective goggles while working with the tool.
	Wear ear protection while working with the tool.

Symbols on the product

	Black lock on a red background on the tool casing: On the release button for removing the exhaust gas piston return unit.
	White lock on a black background on the fastener guide or on the magazine: On the fastener guide release button.

Information shown on the display

	This symbol indicates the battery’s state of charge. When the battery is empty, the maintenance symbol is shown.
	This symbol indicates whether Bluetooth is switched on. If the symbol is not shown on the display then Bluetooth is switched off.
	This symbol indicates when the tool requires cleaning. One segment stands for 500 fasteners driven. There are 5 segments in total, which means that 2,500 fasteners can be driven before cleaning is required.
	This symbol indicates when servicing is due. It appears after 5 years, when 30,000 fasteners have been driven, or when the battery is empty. Our recommendation: Please contact Hilti Service.

Product information

• Write down the serial number in the table below. You will be required to state the product details when contacting Hilti Service or your local Hilti organization to inquire about the product.
  Product information

  Fastening tool	DX 5 SM
  Generation	01
  Serial no.

Safety instructions

• Use only Hilti cartridges or cartridges of equivalent quality.
  
• Use of cartridges of inferior quality in Hilti tools may lead to a build-up of unburned powder, which may suddenly explode and cause severe injuries to operators and bystanders. The cartridges must be either verifiably tested by the manufacturer in accordance with EU standard EN 16264 or they must bear the CE conformity marking.
  

• Only authorized, appropriately trained persons may operate or service this tool.
  

• You and any other persons in the vicinity must wear suitable eye protection and a hard hat while the tool is in use.
  
• Wear ear protectors.
  
• The fastener driving action is initiated by ignition of a propellant charge. Exposure to noise can cause hearing loss.
  

• Observe the information printed in the operating instructions concerning operation, care and maintenance.
  
• Stay alert, watch what you are doing and use common sense when operating a direct fastening tool. Don’t use the tool when you are tired or under the influence of drugs, alcohol or medication. Take a break if you experience pain or feel unwell. A moment of inattention while operating tools may result in serious personal injury.
  
• Avoid working in awkward body positions. Make sure you work from a safe stance and stay in balance at all times.
  
• Wear non-skid shoes.
  
• Never pull back the magazine, fastener guide or fastener by hand.
  
• Under certain circumstances, the tool could be made ready to fire by pulling back the magazine, fastener guide or the fastener by hand. When the tool is ready to fire, fasteners or the piston could be driven inadvertently into parts of the body.
  
• Keep the arms slightly bent while operating the tool (do not straighten the arms).
  
• Keep other people away from the working area, especially children.
  

• Before beginning the work, check the cartridge power level and the power regulator setting.
  
• Carry out a test by driving 2 fasteners into the material you are working on.
  
• Use the right tool for the work you are carrying out. Do not use the tool for purposes for which it was not intended. Use it only as directed and when in faultless condition.
  
• Use a spall stop / protective cap when the application permits.
  
• Never leave a loaded tool unattended.
  
• Transport and store the tool in a secured toolbox.
  
• Always unload the tool (remove cartridges and fasteners) before cleaning, maintenance, changing the fastener guide, before work breaks and before storing the tool.
  
• When not in use, the tool should be unloaded and stored in a locked, dry place where it is inaccessible to children.
  
• Check the tool and the accessories for any damage. Check that moving parts function faultlessly, without sticking, and that no parts are damaged.
  
• All parts must be fitted correctly and fulfill all conditions necessary for correct operation of the tool. Damaged parts must be properly repaired or replaced by Hilti Service unless otherwise stated in the operating instructions.
  
• Before driving fasteners, check that there is no electrical wiring behind the surface into which you want to drive them.
  
• Do not attempt to drive fasteners into unsuitable materials.
  
• Unsuitable materials include welded steel and cast steel, cast iron, glass, marble, plastic, bronze, brass, copper, insulating material, hollow brick, ceramic brick, thin sheet metal (< 4 mm) and cellular concrete. Driving a fastener into these materials may cause the fastener to break, shatter or to be driven right through.
  
• Pull the trigger only when the tool is fully pressed against the working surface at right angles.
  
• When driving fasteners, always hold the fastening tool at right angles to the working surface in order to prevent the fastener being deflected by the surface.
  
• Keep the grips dry, clean and free from oil and grease.
  
• Do not use the tool in places where there is a risk of fire or explosion unless the tool is specially approved for this type of use.
  
• Never drive fasteners into existing holes unless this is recommended by Hilti (e.g. DX-Kwik).
  

• Keep the workplace tidy. Objects which could cause injury should be removed from the working area.
  
• Untidiness in the working area can lead to accidents.
  
• Make sure that the working area is well lit and well ventilated.
  

• Do not tamper with or modify the tool or parts of it, especially the piston.
  
• Use only fasteners of a type approved for use with the tool.
  

• Do not exceed the recommended maximum fastener driving rate.
  
• If the tool has overheated, allow it to cool down.
  
• Do not dismantle the tool while it is hot. Allow the tool to cool down.
  
• Allow the tool to cool down if the plastic cartridge strip begins to melt.
  

• Use only cartridges of a type approved for use with the tool.
  
• Remove the cartridge strip from the tool when you have completed the work or before transporting the tool.
  
• Never attempt to forcibly remove cartridges from the magazine strip or tool.
  
• Store unused cartridges in a secure place where they are not exposed to dampness or excessively high temperatures.
  

Overview of the product

1. Exhaust gas piston return unit
   
2. Guide sleeve
   
3. Casing
   
4. Cartridge guideway
   
5. Power regulation wheel release button
   
6. Power regulation wheel
   
7. Display
   
8. Pushbutton
   
9. Hand pad
   
10. Trigger
    
11. Operating button
    
12. Air vents
    
13. Piston rings
    
14. Piston
    
15. Fastener guide
    
16. Magazine
    
17. Loading / unloading button
    
18. Flat brush
    
19. Large round brush
    
20. Small round brush
    
21. Ramrod
    

Intended use

The product described is a fastening tool for driving nails into steel.

Cartridges

Minimum distances and spacing

Fastening to steel

• The minimum distance from the edge of the working surface to the fastener is 9.5 mm.
  
• The minimum center-to-center distance between two fasteners is 20 mm.
  
• The minimum thickness of the base material is 3 mm.
  

Information about the app

Information about the field of applications

Vibration

Direct fastening tool

Safety devices

Fitting the MX SM magazine

1. Insert the X-460-PSM piston and push it into the tool as far as it will go.
   
2. Fit the X-460-B buffer onto the MX SM magazine.
   
3. Push the magazine firmly onto the exhaust gas piston return unit.
   
4. Screw on the magazine firmly until it engages.
   

Loading the magazine tool

1. Make sure that the loading / unloading button is in line with the magazine.
   
2. From below, push the collated fasteners into the magazine as far as they will go.
   
3. Push the cartridge strip, narrow end first, into the grip of the tool from below until the full length of the cartridge strip is inside the tool. If you wish to use a cartridge strip in which some of the cartridges have already been used, start pulling the strip up and out the top of the tool by hand until the first unused cartridge is in place in the cartridge chamber.
   

Setting the power level

1. Press the power regulator release button.
   
2. Turn the power regulating wheel to set the power level you require.
   
3. Check the quality of the fastening in accordance with Hilti standards.
   
   Select a cartridge power level and power setting to suit the application.
   If you have no previous experience of using the tool, always begin with the lowest power.
   

Driving fasteners with the magazine tool

1. Position the tool.
   
2. Hold the tool perpendicular to the working surface and then press it against the surface.
   
3. Press the trigger to drive the fastener.
   

Unloading the magazine tool

1. Pull the cartridges out of the tool.
   
2. To remove unused fasteners from the magazine, turn the loading / unloading button to a right angle relative to the magazine.
   
   • The collated fasteners can be removed.
     
3. If there are fasteners in the tool, remove them by twice pushing the pusher supplied for the purpose into the hole above the magazine.
   
   Use only the pusher supplied for the purpose, otherwise the magazine can be damaged.
   
4. Turn the loading/unloading button back to its initial position.
   

Switching Bluetooth on and off

• Press and hold the pushbutton for 1-2 seconds to switch on Bluetooth.
  
  Bluetooth switches itself off automatically after 2 minutes.
  

Resetting the cleaning indicator

• Press and hold the pushbutton for 10-12 seconds to reset the cleaning indicator.
  
  The cleaning indicator consists of 5 bars. Each bar stands for 500 fastenings.
  

Procedure if a cartridge fails to fire

1. Keep the nose of the tool pressed at right angles against the working surface for 30 seconds.
   
2. If the cartridge still fails to fire, lift the tool away from the working surface. Take care to avoid pointing it at yourself or other persons.
   
3. Pull the cartridge strip by hand to advance it to the next cartridge and use up the remaining cartridges on the strip.
   

Tool misfires (cartridge doesn't fire)

1. Stop using the tool immediately.
   
2. Unload and dismantle the tool.
   
3. Check that you are using the correct combination of magazine, piston and fasteners.
   
4. Check the buffer, piston and magazine for wear, and replace the parts if necessary.
   
5. Clean the tool.
   
   • If the problem persists after taking the measures described above, further use of the tool is not permissible.
     
   • Have the tool checked and, if necessary, repaired by Hilti Service.
     
   Dirt and residues build up in the tool under normal operating conditions and functional parts are also subject to wear.
   Carry out regular inspections and servicing. Servicing must be carried out after 30,000 fasteners have been driven.
   Clean the tool after every 2,500 - 3,000 fastenings. The fastener counter shows how many fasteners have been driven since the cleaning indicator was last reset. One bar stands for 500 fasteners.
   Check the piston and the buffer daily when the tool is subjected to intensive use, or at the very least, before the end of the recommended regular cleaning interval of 2,500 - 3,000 fastenings.
   The inspections, service intervals and cleaning intervals are based on typical tool use. If you find that the tool is not functioning correctly before a scheduled interval is reached, service the tool immediately.
   

Care of the tool

• Clean the exterior of the tool with a slightly damp cloth at regular intervals.
  

Maintenance

1. Regularly check all external parts of the tool for damage.
   
2. Regularly check all operating controls to ensure that they work properly.
   
3. Use the tool only with the recommended cartridges and at the recommended power settings.
   
   • Use of the wrong cartridges or excessively high power settings may lead to premature failure of the tool.
     

Servicing the tool

• Service the tool in the following situations:
  
  • If power fluctuations occur.
    
  • If cartridge misfires occur.
    
  • If the tool becomes noticeably less easy to operate.
    
  • If the required contact pressure increases noticeably.
    
  • If the trigger resistance increases.
    
  • If the power regulation wheel is stiff.
    
  • If the cartridge strip is difficult to remove.
    
  • If the maintenance indicator shows that a tool service is necessary.
    

Dismantling the magazine tool

1. Check that there is no cartridge strip or fastener in the tool. If there is a cartridge strip or fastener in the tool, pull the cartridge strip up out of the tool by hand from above and remove the fastener from the magazine.
   
2. Press the release button on the side of the magazine to unscrew the magazine.
   
3. Unscrew the magazine.
   
4. Bend the buffer to separate it from the magazine. Remove the buffer.
   
5. Remove the piston.
   

Check of buffer and piston

1. The piston must be replaced in the following cases:
   
   • The piston is broken.
     
   • The piston is badly worn or chipped (e.g. a 90° segment broken away)
     
   • The piston rings are cracked or missing.
     
   • 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.
     

Checking the fastener guide for wear

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.
   

Cleaning and lubricating the magazine tool

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.
   
   Use only Hilti lubricant spray or a product of comparable quality. Use of other lubricants may damage the tool.
   
7. Spray the power regulation wheel with the Hilti spray supplied with the tool.
   

Assembling the magazine tool

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.
   

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.
   

Problems with the tool

Trouble or fault	Possible cause	Action to be taken
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.
Stiff movement of power regulation wheel	Build-up of combustion residues.	Service the tool.
The piston jams in the exhaust gas piston return unit.	The piston is damaged.	Change the piston.
	Rubber dust or debris in the piston return unit.	Check the piston and buffer and replace if necessary. Contact Hilti Service if the problem persists.
	Build-up of combustion residues.	Service the tool.
The exhaust gas piston return unit jams.	Build-up of combustion residues.	Service the tool.
The tool cannot be fired.	The tool was not pressed fully against the working surface.	Press the tool fully against the working surface.
	The magazine is not loaded.	Load the magazine.
	Plastic fragments in the magazine.	Open the magazine, remove the nail strip and plastic fragments.
	The piston is incorrectly positioned.	Remove the cartridge strip and clean the tool. Check the piston and buffer and replace if necessary.
	Nails in the magazine are not correctly positioned.	Reload the tool.

Problems with fasteners to be driven into steel

Malfunction	Possible cause	Action to be taken
Damaged fastener head.	Driving power is too high.	Reduce driving power (adjust the power regulation wheel). Use a less powerful cartridge.
	The piston is damaged.	Change the piston.
The fastener doesn’t penetrate deep enough.	Driving power is too low.	Increase driving power (adjust power regulating wheel). Use a more powerful cartridge.
	The system is unsuitable.	Use a more powerful system , e.g. DX 76 (PTR).
Fastener breakage.	Driving power is too low.	Increase driving power (adjust power regulating wheel). Use a more powerful cartridge.
	Driving power is too high.	Reduce driving power (adjust the power regulation wheel). Use a less powerful cartridge.
The head of the fastener perforates the fastened material.	Driving power is too high.	Reduce driving power (adjust the power regulation wheel). Use a less powerful cartridge.

Problems with the cartridges

Malfunction	Possible cause	Action to be taken
The cartridge strip doesn’t advance.	The cartridge strip is damaged.	Change the cartridge strip.
	The tool has too much built-up dirt and residues.	Service the tool. If necessary, have the tool checked by Hilti Service.
	The tool is damaged.	If the problem persists, contact Hilti Service.
The cartridge strip cannot be removed.	The tool has overheated.	Allow the tool to cool down. Then, carefully remove the cartridge strip from the tool. If the problem persists, contact Hilti Service.
The cartridge doesn’t fire.	Bad cartridge.	Pull the cartridge strip through to the next cartridge.
	The tool is fouled with combustion residues.	Service the tool.
The cartridge strip melts.	The tool is pressed against the working surface for too long before firing.	Fire the tool sooner after pressing it against the working surface. Remove the cartridge strip.
	The fastener driving rate is too high.	Stop using the tool immediately. Remove the cartridge strip and allow the tool to cool.
A cartridge detaches itself from the cartridge strip.	The fastener driving rate is too high.	Stop using the tool immediately. Remove the cartridge strip and allow the tool to cool.
The cartridge strip cannot be removed.	Build-up of combustion residues.	Service the tool.

Other malfunctions