Bosch GCM 12 GDL [43/456] Checking and adjusting the basic adjustment
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Bosch GCM 12 GDL [43/456] Checking and adjusting the basic adjustment

Bosch GCM 12 GDL [43/456] Checking and adjusting the basic adjustment
English | 43
Bosch Power Tools 1 609 929 W31 | (22.3.11)
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°).
OBJ_BUCH-1360-001.book Page 43 Tuesday, March 22, 2011 12:01 PM

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OBJ_BUCH 1360 001 book Page 43 Tuesday March 22 2011 12 01 PM English 143 Checking and Adjusting the Basic Adjustment Reattach the I aser protecti on cap 27 agai n To ensure precise cuts the basic adjustment of the machine Adjusting the Lateral Deviation when Moving the Glide must be checked and adjusted as necessary after intensive Arm see figure T4 use A certain level of experience and appropriate specialty tools Loosen the two screws 65 of laser protection cap 27 with the Allen key 4 mm 20 are required for this Note To access the front screw of the laser protection A Bosch after sales service station will handle this mainte cap the glide arm must be ti Ited down a I ittl e unti I the Allen nance task quickly and reliably Adju sting the Laser key can be inserted through one of the slots of the retract ing blade guard Loosen both fastening screws 67 approx 1 2 turns Note To test the laser function the machine must be con nected to power Whileadjusting thelaser e g when moving the glide 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 never actuatetheOn Off switch Accidental start arm down 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 seefigureTl Afteradjusting checktheflushalignmentwiththecutting line once more If required align the laser beams with the setscrews 64 one more time Hold the laser housing in this position and tighten fasten ing screws 67 again Reattach the I aser protecti on cap 27 agai n Draw a straight cutting line on the workpiece Press locking lever 5 and slowly guide the glide arm down ward with handle4 Setting theStandard Bevel Angle0 Align the workpiece in such a manner that the teeth of the Vertical saw blade are in alignment with the cutting line Bring the machine into the transport position Hold the workpiece in this position and slowly guide the glide arm upward Turn the saw table 38 to the 0 detent 18 The lever 16 must be felt to engage in the detent Clamp the workpiece Checking see figure UI Switch on the laser beams with switch 61 Set an angle gauge to 90 and place it on the saw table 38 Throughout the complete length the laser beams must have The leg of the anglegauge must be flush with thesaw blade 40 thesame clearance to the drawn cutting lineon the work piece even when loweri ng the gli de arm over the complete length Adjustingthe Flush Levelling see figure T2 Loosen the lock lever 17 Using the Allen key 2 mm 21 turn the respective adjust Loosen both setscrews 68 by at least 1 turn using asock 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 Adjustingthe Parallelism see figure T3 Loosen the twoscrews 65 of laser protection cap 27 with the Allen key 4 mm 20 Adju sting s ee f igu re U 2 et spanner size 10 mm Loosen setscrew 7O approx 3 turns with the Allen key 4 mm 20 Screwsetscrew69withtheAllen 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 tightensetscrew 70 first and then set screws 68 Note To access the front screw of the laser protection When the angle indicators 33 and 24 are not in line with the cap the glidearm mustbe tilted down a little until the Allen key can be inserted through one of the slots of the retract 0 marks of scale32 after adjusting loosen the fastening screws of the angle indicators with aPhillips screwdriver and ing blade guard Loosen fastening screw 66 approx 1 2 turns with the Allen key 2mm 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 H ol d the m oun ti ng pl ate i n thi s posi ti on and ti gh ten fas tening screw 66 again After adjusting check the flush alignment with the cutting line once more If required align thelaser beams with the set screws 64 one more time Bosch Power Tools align the angle indicators alongside the 0 marks Setting theStandard45 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 9completely outward Loosen lock I ever 17 and tilt the gl ide arm by hand Ie 41 eftward to thestop 45 1 609 929 W311 22 3 11

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