Maintenance And Service - Bosch GCR 350 Professional Notice Originale

The water collection ring (see "Accessories", page 13) is in-
tended for use with the drill stand for diamond drills GCR 350
and the diamond drill GDB 350 WE.
Mounting the Water Collection Ring (see figure F)
Cut an opening for the required drilling diameter in the seal-
ing lid.
Slide the tension spring 24 all the way into the gap between
the bottom plate 8 and the drilling column 10. Ensure that the
angled part of the tension spring faces downwards.
Bring the water collection ring into position and place the ten-
sion spring on the contact points on the water collection ring.
(The lugs on the ends of the tension spring are used to pull the
tension spring upwards.)
The tensioning force of the spring will press the water collec-
tion ring with its seal onto the surface and together with the
vacuum of the wet/dry vacuum cleaner will prevent water
from escaping.
The water collection ring can be turned inside its tension ring
in order to put the vacuum connection in a required position
(e.g. to optimise the water drainage when drilling holes hori-
zontally). To do so, open the lock of the tension ring on the
water collection ring, turn the water collection ring as re-
quired and close the lock again.
Working Advice
 For drilling, observe the operating instructions of your
diamond drill.
To drill, loosen the parking brake 5 until the star handle 4 is
easy to move. When doing so, hold the star handle in place in
order to prevent the drill from sliding down in an uncontrolled
manner.
Use the star handle 4 to turn the drill down to the required
drilling depth.
Then, turn the crank back until the core bit is completely visible.
To achieve the maximum possible working length, you have to
remove the drill core as soon as it completely fills the core bit.
Then feed the core bit back into the bore hole and drill to the
maximum depth.

Maintenance and Service

Maintenance and Cleaning
Always keep the rack 11 and the guide surfaces of the der
drilling column 10 clean.
Readjusting the Guide Rollers (see figure G)
Over time the guide rollers can wear down, resulting in play
between the guide rollers and the drilling column. To elimi-
nate this play, you have to readjust both guide rollers on the
side with the parking brake 5.
Loosen both hex nuts 25 using a socket wrench (size 17 mm).
Then tighten the two internal hex screws 26 evenly until the
play is minimised.
Retighten both hex nuts 25.
Bosch Power Tools
Accessories
Spacer plate 350 mm (GDB 350 WE) . . . . . . 2 608 550 628
Machine adapter (GDB 2500 WE) . . . . . . . . 2 608 550 622
Water collection ring (GCR 350) . . . . . . . . . . 2 608 550 620
Sealing lid for water collection ring
(GCR 350) . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 609 390 391
Fastening set:
– for concrete . . . . . . . . . . . . . . . . . . . . . . . . 2 608 002 000
– for brickwork . . . . . . . . . . . . . . . . . . . . . . . 2 607 000 745
Anchor set for concrete . . . . . . . . . . . . . . . . . 2 608 002 001
Vacuum set . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 608 550 623
Rubber seal for vacuum set (GCR 350) . . . . 2 608 550 626
Quick-clamping column . . . . . . . . . . . . . . . . . 2 608 598 111
Wet/dry vacuum cleaner GAS 35 M AFC
Wet/dry vacuum cleaner GAS 55 M AFC
After-sales Service and Application Service
Our after-sales service responds to your questions concern-
ing maintenance and repair of your product as well as spare
parts. Exploded views and information on spare parts can al-
so be found under:
www.bosch-pt.com
Bosch's application service team will gladly answer questions
concerning our products and their accessories.
In all correspondence and spare parts orders, please always
include the 10-digit article number given on the nameplate of
the drill stand.
Great Britain
Robert Bosch Ltd. (B.S.C.)
P.O. Box 98
Broadwater Park
North Orbital Road
Denham
Uxbridge
UB 9 5HJ
At www.bosch-pt.co.uk you can order spare parts or arrange
the collection of a product in need of servicing or repair.
Tel. Service: (0344) 7360109
E-Mail: boschservicecentre@bosch.com
Ireland
Origo Ltd.
Unit 23 Magna Drive
Magna Business Park
City West
Dublin 24
Tel. Service: (01) 4666700
Fax: (01) 4666888
English | 13
1 609 92A 0VZ | (30.10.14)