English
MAINTENANCE AND INSPECTION
WARNING
● Be sure to switch power OFF and disconnect the
plug during maintenance and inspection.
● Using cracked, deformed or damaged wheels
can lead to wheel breakage and resulting serious
injury.
1. Inspecting the wheel
Ensure that the wheel is free of cracks and surface
defects.
2. Inspecting the mounting screws
Regularly inspect all mounting screws and ensure
that they are properly tightened. Should any of the
screws be loose, retighten them immediately.
WARNING
Using this portable grinder with loosened screws
is extremely dangerous.
3. Inspecting the carbon brushes (Fig. 6)
The motor employs carbon brushes which are
consumable parts. Replace the carbon brush with
a new one when it becomes worn to its wear limit.
Always keep carbon brushes clean and ensure that
they slide freely within the brush holders.
Wear limit
88
0.67" (17 mm)
CAUTION
● Using this portable grinder with a carbon brush
which is worn in excess of the wear limit will
damage the motor.
NOTE
● Use metabo HPT carbon brush No. 88 indicated in
Fig. 6.
4. Replacing carbon brushes (Fig. 7):
<Disassembly>
(1) Loosen the D4 tapping screw retaining the tail cover
and remove the tail cover.
(2) Use the auxiliary hexagonal wrench or small
screwdriver to pull up the edge of the spring that is
holding down the carbon brush. Remove the edge of
the spring toward the outside of the brush holder.
12
No. of carbon brush
0.24" (6 mm)
(3) Remove the end of the pig-tail on the carbon brush
from the terminal section of brush holder and then
remove the carbon brush from the brush holder.
<Assembly>
(1) Insert the end of the pig-tail of the carbon brush in the
terminal section of brush holder.
(2) Insert the carbon brush in the brush holder.
(3) Use the auxiliary hexagonal wrench or small
screwdriver to return the edge of the spring to the
head of the carbon brush.
(4) Mount the tail cover and tighten the D4 tapping screw.
Carbon Brush
Brush Holder
5. Service and repairs
All quality power tools will eventually require servicing
or replacement of parts because of wear from normal
use. To assure that only authorized replacement parts
will be used, all service and repairs must be performed
by a metabo HPT AUTHORIZED SERVICE CENTER,
ONLY.
6. Service parts list
CAUTION
Repair,
modifi cation
metabo HPT Power Tools must be carried out by
a metabo HPT Authorized Service Center.
This Parts List will be helpful if presented with the
tool to the metabo HPT Authorized Service Center
when requesting repair or other maintenance. In
the operation and maintenance of power tools,
the safety regulations and standards prescribed
in each country must be observed.
MODIFICATIONS
metabo HPT Power Tools are constantly being improved
and modifi ed to incorporate the latest technological
advancements.
Accordingly, some parts may be changed without prior
notice.
Spring
Fig. 7
and
inspection
of