Maintenance - Urrea SURTEK CM714A Manual De Usuario

CUTTING WITH A REDUCED WHEEL
When the cut-off wheel has a reduced outer
diameter, insert between the vise (A) and (B) a
metallic block slightly smaller than the dimen-
sion of workpiece being cut to use the cut-off
wheel economically.

MAINTENANCE

REMOVAL / INSTALLATION OF WHEEL
TO REMOVE
• Unplug the cut-off machine.
• Push down on machine arm and remove
transport chain from hook on motor housing
to release machine arm.
• Raise machine arm to its full raised posi-
tion. Be cautious when raising, machine arm is
spring loaded.
• Rotate lower wheel guard upward, exposing
the hex head bolt that secures abrasive wheel
to wheel arbor.
• Depress the spindle lock button and rotate
bolt until spindle locks, preventing shaft from
rotating.
• Using the hex wrench provided, loosen and
remove bolt.
NOTE: Bolt has right hand threads. Turn bolt
counterclockwise
to loosen.
• Remove outer washer, outer flange, spacer,
and wheel. Do not remove inner flange or in-
ner washer. Removal of these two parts are not
required for wheel changes.
WARNING: If inner flange or inner washer
has been removed, replace both before placing
wheel on spacer and wheel arbor. Failure to do
so could cause an accident since wheel will not
tighten properly.
TO INSTALL
• Unplug the cut-off machine.
• Inspect the replacement wheel for defects
such as cracks, chipping, and correct speed rat-
ing. If defects are found or the speed rating is
not greater than 3,900 rpm, do not use. Select
another wheel.
• Clean debris from the inner washer and in-
ner flange.
• Place new wheel over spacer, then place both
on wheel arbor against inner flange.
• Clean outer flange, then align flats with flats
on wheel arbor and slide it onto arbor until it
16
is flush against wheel.
• Place the recessed side of the outer washer
against the arbor, then insert the hex head bolt
into the threaded end of the wheel arbor.
• Start threads and turn bolt clockwise to snug-
ly tighten.
• Depress the spindle lock button and rotate
bolt until spindle locks, preventing shaft from
rotating.
• Using the hex wrench provided, securely
tighten hex head bolt.
NOTE: Bolt has right hand threads. Turn bolt
clockwise to tighten.
WARNING: Do not overtighten hex head
bolt. Overtightening can cause the new wheel
to crack, resulting in premature failure and
possible serious personal injury.
Inner washer
Wheel arbor
Inner flange
Spacer
INSPECTING THE CARBON BRUSHES
The carbon brushes in the motor are expend-
able parts. If the brushes become excessively
worn, motor trouble might occur. Therefore,
inspect the brushes periodically, and replace
them when they have become worn to the
wear limit line. Also, keep the carbon brushes
clean be so that they will slide smoothly within
the brush holders. The carbon brushes can eas-
ily be removed after disassembling the brush
caps with a slotted screwdriver.
INSPECTING THE MOUNTING SCREWS
Regularly inspect each component of the
power tool for looseness. Re-tighten mounting
screws on any loose part.
Cutting wheel
Outer
washer
Hex bolt
Outer flange