Bosch GCM 12 GDL Professional Original Instructions Manual page 22

OBJ_BUCH-1464-001.book Page 22 Monday, May 9, 2011 3:47 PM
22 | English
Locking the Glide Arm
The glide mechanism of glide arm 28 can be locked with lock
lever 26. Two glide arm positions are possible:
– Glide arm pushed completely to the rear (for chop-cuts)
– Glide arm pulled completely to the front (for a compact
transport position)
Releasing the Glide Arm (see figure B1)
After releasing the glide arm 28, the complete pulling mecha-
nism is ready for operation.
– Push the lock lever 26 down to the stop.
The clamping wedge of the lock lever releases both bottom
joint parts of the glide arm.
Securing the Glide Arm (see figure B2)
Glide arm pushed completely to the rear:
– Push glide arm 28 toward the rear to the stop.
The two upper joint parts of the glide arm are now in the up-
right position and shut.
– Pull lock lever 26 upward until of the clamping wedge is po-
sitioned between the two bottom joint parts of the glide
arm.
This locks the completely pushed back glide arm 28.
Glide arm pulled completely to the front:
– Pull glide arm 28 forward to the stop.
The glide mechanism is now completely extended.
– Pull lock lever 26 upward until of the clamping wedge is po-
sitioned between the two bottom joint parts of the glide
arm.
This locks the completely forward pulled glide arm 28.
Preparing for Operation
Extending the Saw Table (see figure C)
Long workpieces must be underlaid or supported at their free
end.
The saw table can be extended left or right with the saw-table
extensions 11.
– Push clamping lever 51 inward.
– Pull out saw-table extension 11 to the desired length (max.
250 mm).
– To lock the saw-table extension, push clamping lever 51
outward again.
Extending the Fence (see figure D)
For bevel angles, the fence extensions 9 must be moved.
– Pull clamping lever 52 toward the front.
– Pull the fence extension 9 completely outward.
– To lock the fence extension, push clamping lever 52 in-
ward again.
Removing Fence Extensions (see figure E)
For extreme bevel angles, the fence extensions 9 must be re-
moved completely.
– Pivot cover plate 53 outward.
– Pull clamping lever 52 toward the front.
– Pull the fence extension 9 completely outward.
– Remove the fence extension upward.
1 609 929 Y62 | (9.5.11)
Adjusting the Glide Movement of the Glide Arm
(see figure F)
The glide mechanism of glide arm 28 is factory-preset, and
not set to glide movement upon delivery of the power tool.
The glide movement of the glide movement controller can be
individually adjusted on the controller 54:
Hard – for more controlled work motion;
Soft – for fast saw cuts.
– For softer damping, loosen both set screws 55 using the
Allen key (4 mm) 20
or
tighten both set screws 55 for harder damping.
Clamping the Workpiece (see figure G)
To ensure optimum working safety, the workpiece must al-
ways be firmly clamped.
Do not saw workpieces that are too small to clamp.
– Press the workpiece firmly against the fence 10.
– Insert the material clamp 22 provided into one of the holes
56 intended for it.
– Loosen the wing bolt 57 and adapt the material clamp to
the workpiece. Tighten the wing bolt again.
– Firmly clamp the workpiece by turning the threaded rod
58 in clockwise direction.
Adjusting Mitre Angles
To ensure precise cuts, the basic adjustment of the machine
must be checked and adjusted as necessary after intensive
use (see "Checking and Adjusting the Basic Adjustment",
page 26).
Always tighten the locking knob 15 firmly before saw-
ing. Otherwise the saw blade can become wedged in the
workpiece.
Adjusting Standard Mitre Angles (see figure H)
For quick and precise adjustment of commonly used mitre an-
gles, detents 18 have been provided for on the saw table:
Left
0°
15°; 22.5°;
31.6°; 45°
– Loosen the locking knob 15 in case it is tightened.
– Pull lever 16 and rotate the saw table 38 left or right to the
requested detent.
– Release the lever again. The lever must be felt to engage in
the detent.
Adjusting Any Mitre Angle (see figure I)
The mitre angle can be set in the range from 52° (left side) to
60° (right side).
– Loosen the locking knob 15 in case it is tightened.
– Pull lever 16 and at the same time, push mitre detent over-
ride 14 down at the front.
This locks lever 16 and the saw table can move freely.
– Turn the saw table 38 left or right by the locking knob until
the angle indicator 59 indicates the requested mitre angle.
– Tighten the locking knob 15 again.
Right
15°; 22.5°;
31.6°; 45°; 60°
Bosch Power Tools