Dust Extraction; Starting Operation - Bosch GBH Professional 18V-26 Manual Original

OBJ_BUCH-2545-003.book Page 20 Wednesday, September 14, 2016 8:49 AM
20 | English
 A damaged dust protection cap should be changed im-
mediately. We recommend having this carried out by
an after-sales service.
Changing the Tool (SDS-plus)
Inserting SDS-plus Drilling Tools (see figure H)
The SDS-plus drill chuck allows for simple and convenient
changing of drilling tools without the use of additional tools.
– GBH 18V-26 F: Insert the SDS-plus quick change chuck 2.
– Clean and lightly grease the shank end of the tool.
– Insert the tool in a twisting manner into the tool holder until
it latches itself.
– Check the latching by pulling the tool.
As a requirement of the system, the SDS-plus drilling tool can
move freely. This causes a certain radial run-out at no-load,
which has no effect on the accuracy of the drill hole, as the
drill bit centres itself upon drilling.
Removing SDS-plus Drilling Tools (see figure I)
– Push back the locking sleeve 5 and remove the tool.
Changing the Tool (without SDS-plus)
(GBH 18V-26)
Inserting (see figure J)
Note: Do not use tools without SDS-plus for hammer drilling
or chiselling! Tools without SDS-plus and their drill chucks are
damaged by hammer drilling or chiselling.
– Insert a key type drill chuck 24 (see "Inserting/Removing
the Key Type Drill Chuck", page 19).
– Open the key type drill chuck 24 by turning until the tool
can be inserted. Insert the tool.
– Insert the chuck key into the corresponding holes of the
key type drill chuck 24 and clamp the tool uniformly.
– Turn the mode selector switch 13 to the "drilling" position.
Removing (see figure K)
– Turn the sleeve of the key type drill chuck 24 with the drill
chuck key in anticlockwise direction until the drilling tool
can be removed.
Changing the Tool (without SDS-plus)
(GBH 18V-26 F)
Inserting (see figure L)
Note: Do not use tools without SDS-plus for hammer drilling
or chiselling! Tools without SDS-plus and their drill chucks are
damaged by hammer drilling or chiselling.
– Insert the quick change keyless chuck 1.
– Firmly hold the retaining ring 30 of the quick change
chuck. Open the tool holder by turning the front sleeve 29
until the tool can be inserted. Tightly hold the retaining ring
30 and firmly turn the front sleeve 29 in the direction of the
arrow until a distinct latching noise can be heard.
– Check the tight seating by pulling the tool.
Note: If the tool holder was opened to the stop, then the latch-
ing noise possibly may be heard while closing the tool holder
and the tool holder will not close.
In this case, turn the front sleeve 29 once in the opposite di-
1 609 92A 3DF | (14.9.16)
rection of the arrow. Afterwards, the tool holder can be
closed (tightened) again.
– Turn the mode selector switch 13 to the "drilling" position.
Removing (see figure M)
– Firmly hold the retaining ring 30 of the quick change
chuck. Open the tool holder by turning the front sleeve 29
in the direction of the arrow until the tool can be removed.

Dust 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 car-
cinogenic, especially in connection with wood-treatment
additives (chromate, wood preservative). Materials con-
taining asbestos may only be worked by specialists.
– As far as possible, use a dust extraction system suitable
for the material.
– 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.
 Prevent dust accumulation at the workplace. Dust can
easily ignite.
Dust Extraction with GDE 18V-16 (Accessories)
(see figure N)
A GDE 18V-16 (accessory) is required for extracting concrete
dust and stone dust.
This dust extraction system is not suitable for dust from
wood, metal and plastic or for dust which is harmful to one's
health (e.g. asbestos).
Operation

Starting Operation

Inserting the battery
– Set the rotational direction switch 8 to the centre position
to protect the power tool against accidental starting.
– Slide the charged battery 11 from behind into the foot of
the power tool. Press the battery fully into the foot until the
battery is securely locked.
Setting the operating mode
The operating mode of the power tool is selected with the
mode selector switch 13.
Note: Change the operating mode only when the machine is
switched off! Otherwise, the machine can be damaged.
– To change the operating mode, push the release button 12
and turn the mode selector switch 13 to the requested po-
sition until it can be heard to latch.
Position for hammer drilling in concrete or
stone
Bosch Power Tools