Bosch GHO 185-LI Professional Manual Original página 21

Resharpening HSS Planer Blades (see figure D)
Worn or blunt HSS planer blades can be resharpened using
the sharpening aid (21) (accessory) and a commercially
available grinding stone.
Place both planer blades in the sharpening aid and clamp
them firmly with the wing bolt. Make sure that both planer
blades are pushed in fully.
Move the planer blades placed in the sharpening aid steadily
across the grinding stone, applying light pressure.
Note: The planer blades must not be resharpened by more
than 6 mm (i.e. to a minimum width of 23 mm). Both planer
blades must be replaced when they reach this size.
Fitting the Planer Blades (see figures E–F)
Before (re)inserting new or resharpened planer blades,
clean the blade head (16) and, if necessary, the planer
blade (18) and the retaining clip (19). Clean heavily
gummed planer blades with spirits or petroleum.
Note: New and resharpened planer blades must always be
set to the correct height before fitting.
The setting gauge (22) (accessory) is used to adjust the
height of the planer blades. Place the planer blade (18) and
the retaining clip (19) on the setting gauge. Make sure that
the blade retainer (19) engages in the groove intended for
this purpose. Press the planer blade (18) against the guide
and fix the retaining clip (19) in this position with the fasten-
ing screw (20). This will automatically adjust the correct
height.
The planer blade must be fitted and aligned with the centre
of the planer base plate (11). Then tighten the three
fastening screws (14) with the T-handle socket
spanner (13). Ensure that the tightening sequence
(①②③) on the clamping jaw (15) is followed correctly.
Note: Check that the fastening screws (14) are firmly
tightened before start-up. Turn the blade head (16) by hand
and ensure that the planer blades are not brushing against
anything.
Changing the HM/TC Planer Blades
Take care when changing the planer blade. Do not pick
u
up the planer blade by the cutting edges. You may be
injured by the sharp cutting edges.
Use only original Bosch HM/TC planer blades.
Hard metal (HM/TC) planer blades have two cutting edges
and can be turned. If both cutting edges become blunt, the
planer blades (23) need to be changed. HM/TC planer
blades must not be resharpened.
Removing the Planer Blades (see figures G–H)
– To turn or replace the planer blades, turn the blade head
(16) until the clamping jaw (15) is parallel with the planer
base plate (11).
– Undo the three fastening screws (14) using the Torx key
(13) (approx. 1–2 turns). The clamping jaw (15) does
not need to be removed.
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– Turn the blade head slightly and use a piece of wood to
push the planer blade (23) to the side and out of the
blade head (16).
– Turn the blade head 180° and remove the second planer
blade.
Fitting the Planer Blades (see figures I–J)
The guide groove on the planer blade ensures a constant,
even height setting when changing or turning the blade.
If necessary, clean the blade seat in the blade head (16) and
the planer blade (23).
When fitting the planer blade, ensure that it is correctly
seated in the mounting guide of the blade head (16).
The planer blade must be fitted and aligned with the centre
of the planer base plate (11). Then tighten the three
fastening screws (14) using the Torx key (13), following the
tightening sequence (①②③) specified on the clamping jaw
(15).
Note: Check that the fastening screws (14) are firmly
tightened before start-up. Turn the blade head (16) by hand
and ensure that the planer blades are not brushing against
anything.
Use of conversion kits
Changing from HSS to HM/TC
The HM/TC adapter enables a planer fitted with HSS planer
blades to be changed over to HM/TC planer blades.
– Unscrew the three fastening screws (14) using the Torx
key (13) and remove the clamping jaw (15).
– Push the retaining clip (19) together with the planer
blade (18) out of the blade head (16) and/or the guide
groove (17).
– Remove the screws (20).
– Place the retaining clip (19) and the adapter (37) in the
setting gauge (22). The retaining clip (19) must slot into
the groove on the setting gauge (see figure S).
– Push the HM/TC planer blade (23) into the adapter (37)
from the side. The ridge on the adapter (37) must slot
into the groove on the HM/TC planer blade (see figure S).
– Tighten the screws (20).
– Insert the retaining clip (19) together with the adapter
(37) and the planer blade (18) into the blade head (16)
and/or the guide groove (17).
– Put the clamping jaw (15) on and insert the fastening
screws (14), which do not yet need to be screwed in
tightly.
– The planer blade must be fitted and aligned with the
centre of the planer base plate (11). Then tighten the
three fastening screws (14) using the Torx key (13), fol-
lowing the tightening sequence (①②③) specified on
the clamping jaw (15).
Changing from HM/TC to HSS
Planers fitted with HM/TC planer blades can be changed
over to HSS planer blades.
English | 21
1 609 92A 8GN | (16.05.2023)