Bosch GCM 12 GDL Professional - Manual (Page 43)

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Bosch Power Tools 1 609 929 W31 | (6.4.11)
Checking and Adjusting the Basic Adjustment
To ensure precise cuts, the basic adjustment of the machine
must be checked and adjusted as necessary after intensive
use.
A certain level of experience and appropriate specialty tools
are required for this.
A Bosch after-sales service station will handle this mainte-
nance task quickly and reliably.
Adjusting the Laser
Note: To test the laser function, the machine must be con-
nected to power.
f
While adjusting the laser (e.g. when moving the glide
arm), never actuate the On/Off switch. Accidental start-
ing of the power tool can lead to injuries.
– Bring the power tool into the working position.
– Turn the saw table 38 to the 0° detent 18. The lever 16
must be felt to engage in the detent.
– Switch on the laser beams with switch 61.
Checking: (see figure T1)
– Draw a straight cutting line on the workpiece.
– Press locking lever 5 and slowly guide the glide arm down-
ward with handle 4.
– Align the workpiece in such a manner that the teeth of the
saw blade are in alignment with the cutting line.
– Hold the workpiece in this position and slowly guide the
glide arm upward.
– Clamp the workpiece.
– Switch on the laser beams with switch 61.
Throughout the complete length, the laser beams must have
the same clearance to the drawn cutting line on the work-
piece, even when lowering the glide arm.
Adjusting the Flush Levelling: (see figure T2)
– Using the Allen key (2 mm) 21, turn the respective adjust-
ment screw 64 until the laser beam has the same clearance
to the drawn cutting line on the workpiece over the com-
plete length.
One rotation in anticlockwise direction moves the laser beam
from left to right; one rotation in clockwise direction moves
the laser beam from right to left.
Adjusting the Parallelism: (see figure T3)
– Loosen the two screws 65 of laser protection cap 27 with
the Allen key (4 mm) 20.
Note: To access the front screw of the laser protection
cap, the glide arm must be tilted down a little until the Allen
key can be inserted through one of the slots of the retract-
ing blade guard.
– Loosen fastening screw 66 (approx. 1–2 turns) with the
Allen key (2 mm) 21.
Do not completely unscrew the screw.
– Move the mounting plate of the laser right or left until the
laser beams are parallel to the drawn cutting line on the
workpiece over the complete length.
– Hold the mounting plate in this position and tighten fasten-
ing screw 66 again.
– After adjusting, check the flush alignment with the cutting
line once more. If required, align the laser beams with the
set screws 64 one more time.
– Reattach the laser protection cap 27 again.
Adjusting the Lateral Deviation when Moving the Glide
Arm: (see figure T4)
– Loosen the two screws 65 of laser protection cap 27 with
the Allen key (4 mm) 20.
Note: To access the front screw of the laser protection
cap, the glide arm must be tilted down a little until the Allen
key can be inserted through one of the slots of the retract-
ing blade guard.
– Loosen both fastening screws 67 (approx. 1–2 turns)
with the Allen key (2 mm) 21.
Do not completely unscrew the screws.
– Move the laser housing right or left until the laser beams no
longer deviate in lateral direction when moving the glide
arm down.
– After adjusting, check the flush alignment with the cutting
line once more. If required, align the laser beams with the
set screws 64 one more time.
– Hold the laser housing in this position and tighten fasten-
ing screws 67 again.
– Reattach the laser protection cap 27 again.
Setting the Standard Bevel Angle 0°
(Vertical)
– Bring the machine into the transport position.
– Turn the saw table 38 to the 0° detent 18. The lever 16
must be felt to engage in the detent.
Checking: (see figure U1)
– Set an angle gauge to 90° and place it on the saw table 38.
The leg of the angle gauge must be flush with the saw blade 40
over the complete length.
Adjusting: (see figure U2)
– Loosen the lock lever 17.
– Loosen both set screws 68 (by at least 1 turn) using a sock-
et spanner (size 10 mm).
– Loosen set screw 70 (approx. 3 turns) with the Allen key
(4 mm) 20.
– Screw set screw 69 with the Allen key (4 mm) 20 in or out
until the leg of the angle gauge is flush with the saw blade
over the complete length.
– Retighten the lock lever 17 again.
Afterwards, tighten set screw 70 first, and then set screws
68.
When the angle indicators 33 and 24 are not in line with the
0° marks of scale 32 after adjusting, loosen the fastening
screws of the angle indicators with a Phillips screwdriver and
align the angle indicators alongside the 0° marks.
Setting the Standard 45° Bevel Angle
(Leftward)
– Bring the power tool into the working position.
– Turn the saw table 38 to the 0° detent 18. The lever 16
must be felt to engage in the detent.
– Pull the left fence extension 9 completely outward.
– Loosen lock lever 17 and tilt the glide arm by handle 4 left-
ward to the stop (45°).
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