Chicago Electric 60373, Owner'S Manual & Safety Instructions

Page 14

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Item 60373

 Operating Instructions

  Read the ENTIRE IMPORTANT SAFETY INFORMATION section at the beginning of this 

manual including all text under subheadings therein before set up or use of this product.

Tool Set Up

TO PREVENT SERIOUS INJURY FROM ACCIDENTAL OPERATION: Turn the Power Switch of 
the tool off and unplug the tool from its electrical outlet before installing accessories.

Installing a Non-threaded Grinding Wheel

1.  The Grinding Wheel MUST be:

•  rated to at least 11,000 RPM.
•  no larger than 4" in diameter.
•  fitted with a 5/8" or 7/8" round arbor hole.
• 

1/4″ thick or less.

•  a type of grinding wheel suitable for 

surface grinding, not edge grinding.

•  dry and clean.
•  proven undamaged by inspection and 

by the ring-test explained below.

Spindle 

(6)

Inner 

Flange 

(2)

Grinding 

Wheel

Outer 

Flange 

(1)

Wrench 

(46)

Figure 1 – Installing Wheels

Spindle

Lock

(21)

2.  Closely inspect the Grinding Wheel (sold 

separately) before mounting.  Perform a ring-
test on the wheel (unless wheel is smaller 

than 4″ or is an unusual shape) as follows:

a.  Suspend wheel using a dowel or 

finger through the arbor hole.

b. 

Tap

Wheel 

Here

45°

45°

45°

45°

Hang 

Wheel 

from 

Dowel

V

E

R

T

I

C

A

L

C

E

N

T

E

R

Tap the flat side of the wheel with a light non-
metallic object, such as a screwdriver handle, 
at a point 45° from the vertical center line on 
each side of the wheel and 1 – 2 inches from 
the edge of the wheel (see Illustration).

c.  Rotate the wheel 90° and repeat the test 

until the entire wheel has been checked.

d.  An undamaged wheel will give a clear 

tone. If cracked, there will be a dead 
sound and not a clear ring.

3.  To mount the wheel, press in and hold the Spindle 

Lock (21) to prevent the Spindle (6) from turning.

4.  Remove the Outer Flange (1). Keep the Inner 

Flange (2) in position on the Spindle.

5.  For wheels with paper gaskets (blotters) or metal 

gaskets:  Slip the grinding wheel onto the Spindle 
with the gasket first.  The gasket should be centered 
on the grinding wheel and the wheel and gasket 
should rest flat against the Inner Flange.

WARNING:  To prevent serious injury, 

gaskets must be used for all grinding 
wheels they are provided with.  Gaskets 
help prevent grinding wheel damage and 
wheel slippage, causes of wheel failure.

SAFETY

OPERA

TION

MAINTENANCE

SETUP