5
7-3 Replacement of Fuse
[Fig 7]
A Fuse is installed in the Handle to prevent overload to the
Motor. When the Fuse is cut, get rid of the cause. Then,
replace it with a new one.
●
Procedure
q
Loosen five screws and remove the Switch Handle(A).
w
Take out a Fuse Holder which is packed with Sponge and
replace it with a new one.
e
Replace it with a new Fuse which is specified by Nitto Kohki.
The procedure is the opposite of the removal.
[Fig 7]
Fuse
Switch Handle (A)
Screw
NITTO KOHKI
7-4 Inspecting and Replacing Carbon Brushes
The tool must be run under no load for at least
ten minutes after Carbon Brushes have been
replaced.
●
Wears on the Carbon Brushes need to be checked regularly.
●
When they have worn down to about 6mm,the commutation
deteriorates and may cause a breakdown,so they should be
replaced with the new ones in accordance with the following
procedure.[Fig 8]
[Fig 8]
●
Removal
q
Completely loosen the Switch Handle fastening screws and
remove Switch Handle(A).[Fig 9]
[Fig 9]
6mm
w
Slide the Brush Holder Retainer to the back of the Motor
(towards the two Core Rods) and push gently to release the
Brush Holder Retainer diagonally from the slider. You can
now lift up the Brush Holder Retainer and take it out.
[Fig 10]
[Fig 10]
e
Lift the Brush Holder with a screwdriver and press the
Carbon Brush as you remove it.
[Fig 11]
[Fig 11]
●
Replacement
q
Disconnect the lead wire from the brush terminal and remove
the brush.[Fig 12]
w
With the terminal insert side of the new brush aligned with
the opening in the Brush Holder, insert the new brush and
insert the lead wire terminal into the brush.[Fig 12]
[Fig 12]
Brush Holder
Retainer
Brush Holder
Switch handle (A)
Screw
Brush
Brush Holder
Lead Wire
