Bosch GSH Professional Instructions

GSH Professional
16-28 | 16-30

Original instructions

Safety instructions

General Power Tool Safety Warnings

WARNING
Read all safety warnings and all instructions.
Failure to follow the warnings and instructions may result in electric shock, fire, and/or serious injury.
Save all warnings and instructions for future reference.
The term “power tool” in the warnings refers to your mains-operated (corded) power tool or battery-operated (cordless) power tool.

Work area safety

• Keep work area clean and well-lit. Cluttered or dark areas invite accidents.
• Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gases, or dust. Power tools create sparks that may ignite dust or fumes.
• Keep children and bystanders away while operating a power tool. Distractions can cause you to lose control. Electrical safety
• Power tool plugs must match the outlet. Never modify the plug in any way. Do not use any adapter plugs with earthed (grounded) power tools. Unmodified plugs and matching outlets will reduce the risk of electric shock.
• Avoid body contact with earthed or grounded surfaces, such as pipes, radiators, ranges, and refrigerators. There is an increased risk of electric shock if your body is earthed or grounded.
• Do not expose power tools to rain or wet conditions.
  Water entering a power tool will increase the risk of electric shock.
• Do not abuse the cord. Never use the cord for carrying, pulling, or unplugging the power tool. Keep cord away from heat, oil, sharp edges or moving parts.
  Damaged or entangled cords increase the risk of electric shock.
• When operating a power tool outdoors, use an extension cord suitable for outdoor use. The use of a cord suitable for outdoor use reduces the risk of electric shock..
• If operating a power tool in a damp location is unavoidable, use a residual current device (RCD) protected supply. The use of an RCD reduces the risk of electric shock.

Personal safety

• Stay alert, watch what you are doing, and use common sense when operating a power tool. Do not use a power tool while you are tired or under the influence of drugs, alcohol, or medication. A moment of inattention while operating power tools may result in serious per- sonal injury.
• Use personal protective equipment. Always wear eye protection. Protective equipment such as dust masks, non-skid safety shoes, hard hats, or hearing protection used for appropriate conditions will reduce personal injuries.
• Prevent unintentional starting. Ensure the switch is in the off-position before connecting to a power source and/or battery pack, picking up or carrying the tool.
  Carrying power tools with your finger on the switch or energizing power tools that have the switch on invites accidents.
• Remove any adjusting key or wrench before turning the power tool on. A wrench or a key left attached to a rotating part of the power tool may result in personal injury.
• Do not overreach. Keep proper footing and balance at all times. This enables better control of the power tool in unexpected situations.
• Dress properly. Do not wear loose clothing or jewelry. Keep your hair, clothing, and gloves away from moving parts.
  Loose clothes, jewelry, or long hair can be caught in moving parts.
• If devices are provided for the connection of dust extraction and collection facilities, ensure these are connected and properly used.
  The use of dust collection can reduce dust-related hazards.

Power tool use and care

• Do not force the power tool. Use the correct power tool for your application. The correct power tool will do the job better and safer at the rate for which it was designed.
• Do not use the power tool if the switch does not turn it on and off. Any power tool that cannot be controlled with the switch is dangerous and must be repaired.
• Disconnect the plug from the power source and/or the battery pack from the power tool before making any adjustments, changing accessories, or storing power tools. Such preventive safety measures reduce the risk of starting the power tool accidentally.
• Store idle power tools out of the reach of children and do not allow persons unfamiliar with the power tool or these instructions to operate the power tool. Power tools are dangerous in the hands of untrained users.
• Maintain power tools. Check for misalignment or binding of moving parts, breakage of parts, and any other condition that may affect the power tool’s operation.
  If damaged, have the power tool repaired before use.
  Many accidents are caused by poorly maintained power tools.
• Keep cutting tools sharp and clean. Properly maintained cutting tools with sharp cutting edges are less likely to bind and are easier to control.
• Use the power tool, accessories and tool bits, etc. in accordance with these instructions, taking into account the working conditions and the work to be per-
  formed. Use of the power tool for operations different from those intended could result in a hazardous situation.

Service

• Have your power tool serviced by a qualified repair person using only identical replacement parts. This will ensure that the safety of the power tool is maintained.

Hammer Safety Warnings

• Wear ear protectors. Exposure to noise can cause hearing loss.
• Use auxiliary handle(s), if supplied with the tool. Loss of control can cause personal injury.
• Hold power tool by insulated gripping surfaces, when performing an operation where the cutting accessory may contact hidden wiring or its own cord. Cutting accessory contacting a “live” wire may make exposed metal parts of the power tool “live” and could give the operator an electric shock.
• Use suitable detectors to determine if utility lines are hidden in the work area or call the local utility company for assistance. Contact with electric lines can lead
  to fire and electric shock. Damaging a gas line can lead to an explosion. Penetrating a water line causes property damage or may cause an electric shock.
  Products sold in GB only:
  Your product is fitted with a BS 1363/A approved electric plug with an internal fuse (ASTA approved to BS 1362).
  If the plug is not suitable for your socket outlets, it should be cut off and an appropriate plug fitted in its place by an authorized customer service agent. The replacement
  plug should have the same fuse rating as the original plug.
  The severed plug must be disposed of to avoid a possible shock hazard and should never be inserted into a mains socket elsewhere.
• Hold the power tool firmly with both hands and make sure you have a stable footing. The power tool can be more securely guided with both hands.

Product Description and Specifications

Read all the safety and general instructions.
Failure to observe the safety and general instructions may result in electric shock, fireand/or serious injury.
Please observe the illustrations at the beginning of this operating manual.\

Intended use
The machine is intended for heavy chiseling and demolition work as well as for driving in and compacting with the appropriate accessories.

Product features
The numbering of the product features refers to the diagram of the power tool on the graphics page.

1. Handle (insulated gripping surface)
2. On/off switch
3. Carrying handle
4. Knurled nut for carrying handle
5. Lock bolt (GSH 16-30)
6. Tool retainer (GSH 16-28)
7. Tool shank
8. Tool holder
9. Shoulder

Technical data

Assembly

Carrying handle
The carrying handle (3) can be swiveled to any position.
Loosen the knurled nut (4), rotate the carrying handle (3) around the axis of the tool to the required position, and then retighten the knurled nut (4).
The carrying handle (3) can also be repositioned so that it is on the other side of the tool. Completely unscrew the knurled nut (4) and then pull the hexagon bolt upwards and
out. Take off the carrying handle (3) from the side and rotate the remaining clamping element by 180°. Fit the carrying handle (3) again by following the steps in reverse order.

Changing the tool (GSH 16-28) u Pull the plug out of the socket before carrying out any work on the power tool.
Clean the tool shank (7) and apply a light coat of grease.

Application tools without collar (see figures A – B)
– Pivot the tool retainer (6) upwards by approx. 150° and insert the application tool into the tool holder (8).
– Pivot the tool retainer (6) back down to lock the application tool in place.
– Check that it is locked by pulling on the tool.
Application tools with collar (see figures C – D)
Application tools with an insertion length of 152 mm (6″) to the collar can be used.
– Pivot the tool retainer (6) upwards by approx. 180° and insert the application tool into the tool holder (8).
– Pivot the tool retainer (6) back as far as the application tool to lock it in place. The collar (9) must be held by the tool retainer (6).
– Check that it is locked by pulling on the tool.

Changing the tool (GSH 16-30)
Pull the plug out of the socket before carrying out any work on the power tool.
– Clean the tool shank (7) and apply a light coat of grease.
– Pull out the lock bolt (5) and turn it 180° anticlockwise. Allow the lock bolt 5 to engage again.
– Insert the application tool all the way into the tool holder (8). The groove of the tool shank (7) must face upwards as shown in the figure.
– Pull out the lock bolt (5) and turn it 180° clockwise. Allow the lock bolt (5) to engage again.
– Check that it is locked by pulling on the tool.

Dust/Chip Extraction
Dust from materials such as lead-containing coatings, some wood types, minerals, and metal can be harmful to one’s health. Touching or breathing in the dust can cause allergic
reactions and/or lead to respiratory infections of the user or bystanders.
Certain dust, such as oak or beech dust, is considered carcinogenic, especially in connection with wood-treatment additives (chromate, wood preservative). Materials containing
asbestos may only be worked by specialists.
– Provide for good ventilation of the working place.
– It is recommended to wear a P2 filter-class respirator.
Observe the relevant regulations in your country for the materials to be worked.
Avoid dust accumulation at the workplace. Dust can easily ignite.

Operation
Starting operation
Pay attention to the mains voltage. The voltage of the power source must match the voltage specified on the rating plate of the power tool. Power tools marked with 230 V can also be operated with 220 V.

Switching on/off
– To start the machine, push the on/off switch (2) into position “I”.
– To switch off the machine, push the on/off switch (2) into position “0”.
At low temperatures, the power tool will take a certain amount of time to reach its full impact performance. You can shorten this warm-up time by tapping the power tool’s inserted application tool on the ground once.

Working advice

Pull the plug out of the socket before carrying out any work on the power tool.
When working, hold the power tool by the handle (1) with both hands. The handle (1) can move upwards and downwards around its axis by approx. 30 mm. This has a damping effect against vibrations.
For the highest possible impact damping, work only with moderate pressure.

Sharpening Chisels
Only sharp chiseling tools will produce good results, therefore sharpen your chiseling tools in good time before use.
This will ensure a long service life for the tools and good work results.

Resharpening
Grind chiseling tools against sanding discs, e.g. aluminum oxide, under a steady stream of water. Take care that no annealing coloration appears on the cutting edges; this
impairs the hardness of the chiseling tools.

To forge a chisel, heat it to between 850 and 1050 °C (pale red to yellow).
To harden a chisel, heat it to approx. 900 °C and quench in oil. Then, leave it in an oven for approx. one hour at 320 °C (annealing color: pale blue).

Maintenance and Service

Maintenance and Cleaning
Pull the plug out of the socket before carrying out any work on the power tool.
To ensure safe and efficient operation, always keep the power tool and the ventilation slots clean.
In order to avoid safety hazards, if the power supply cord needs to be replaced, this must be done by Bosch or by an after-sales service center that is authorized to repair Bosch power tools.
When the carbon brushes are worn out, the power tool switches itself off. The power tool must be sent to the after-sales service for maintenance; see the “After-sales service
and application service” section for addresses.

After-Sales Service and Application Service
Our after-sales service can answer questions concerning product maintenance and repair, as well as spare parts. You can find exploded drawings and information on spare parts
at: www.bosch-pt.com
The Bosch product use advice team will be happy to help you with any questions about our products and their accessories.
www.powertool-portal.de, the internet portal for tradespeople and DIY enthusiasts.
In all correspondence and spare parts orders, please always include the 10‑digit article number given on the type plate of the product.

Robert Bosch Power Tools GmbH
70538 Stuttgart
GERMANY
www.bosch-pt.com
1 609 92A 23U (2019.01) DOC / 33

Australia, New Zealand, and Pacific Islands
Robert Bosch Australia Pty. Ltd.
Power Tools
Locked Bag 66

1 609 92A 23U