Bosch 1594 Operating/Safety Instructions Manual page 9

CONVERSION TO HIGH-SPEED
STEEL BLADES
The 1594 Planer can be converted to accept
large HSS blades. The conversion requires
the optional PA1204 HSS Blades with
Retainers (pair). (Fig. 7)
Additional pairs of HSS blade, the PA1205
large HSS blades, can also be purchased
separately.
REMOVAL OF MINI TC BLADE
HOLDERS AND RETAINERS
1. Rotate the blade drum until the clamping
jaw is parallel to the planer shoe.
2. Loosen the three
completely and remove the screws and
clamping jaw.
3. Slightly rotate the blade drum and use a
piece of wood to push the blade, holder
and retainer off of the blade drum. Make
sure to keep your fingers away from the
sharp edges of the blade. If the blade is
gummed and difficult to remove, you may
clean the blade and clamp with mineral
spirits, lacquer thinner or alcohol.
4. Rotate the blade drum 180° and repeat
the procedure to remove the second
blade.
INSTALLATION OF HSS BLADES
AND RETAINERS
Before inserting a new or sharpened blade,
clean all surfaces (blades, retainer and drum)
with mineral spirits; lacquer thinner or
alcohol, as this will ensure an accurate blade
setting and proper tool performance.
New or re-sharpened plane blades must be
properly leveled before installation using the
optional PA1206 HSS Blade Leveling
Fixture. (The PA1204 HSS Blades with
Retainers are leveled at the factory.)
To ensure proper operation and an even cut,
the blades must be positioned so that they
are:
• Centered relative to the front and rear
shoes.
• Aligned with each other.
• Positioned so that they will not touch
against any part of the planer when
rotated.
Procedure:
1. To install the blades, carefully slide the
blade/retainer assembly sideways to over
one of the two clamping areas on the
blade drum. The retainer must engage in
the groove. (Fig. 8)
BLADE
RETAINER
clamp screws
2. Place a properly-oriented clamping jaw
over the blade. (Fig. 4)
3. Tighten the three clamp screws with the
Torx key using the correct tightening
sequence (1,2,3). (Fig. 4)
4. Rotate the blade drum 180° and repeat
the procedure for the second blade
clamp.
REMOVING LARGE HSS BLADES
To remove the blades:
1. Rotate the blade drum until the clamping
jaw is parallel to the planer shoe.
2. Loosen and remove the three clamp
screws with the Torx key.
3. Also remove the clamping jaw.
4. Slightly rotate the blade drum and use a
piece of wood to push the blade and
retainer sideways and out of the blade
drum. Make sure to keep your fingers
away from the sharp edges of the blade. If
the blade is gummed and difficult to
remove, you may clean the blade and
clamp with mineral spirits, lacquer thinner
or alcohol.
Rotate the blade drum 180° and repeat the
procedure to remove the second blade.
-9-
FIG. 7
HSS
BLADE
FIG. 8
GROOVE