HENRY TOOLS, INC. Ph: (216) 291-1011 or (800) 826-5257
General Operators Instructions and Service Manual
www.HenryTools.com | Page 105 Revised 02/11/16
For additional product information visit our website.
MODELS
46 ARA
46 ARAS
46 ARAC
46 RASD
PART NUMBER DESCRIPTION
490-2 NUT FOR 490-K & 490-KR
1100-660 3/8-24 TO 5/8 I.D. TYPE 27 ADAPTOR
ASSEMBLY
1100-661 3/8-24 TO 5/8 I.D. BACKING PLATE
1100-662 3/8-24 TO 5/8 I.D. ADAPTER NUT
1100-664 3/8-24 TO 7/8 I.D. BACKING PLATE
1100-666 3/8-24 TO 7/8 I.D. ADAPTER NUT
1100-668 3/8-24 TO 7/8 I.D. TYPE 27 //ADAPT.
ASSY.
530196 1/8” ROUNDED TAPER BURR
530198 1/8”TAPER BURR
530200 1/8” FLAME BURR
530202 1/8” BALL BURR
530204 1/8” CYLINDRICAL BURR
530208 1/4” BALL BURR
530210 1/4” CYLINDRICAL BURR
This tool is designed to operate on 90 psig (6.2 bar) maximum air
pressure with 1/4” (8 mm) hose. Do not use a grinder without rec-
ommended wheel guard. Do not use any wheel for which the operat-
ing speed listed is lower than the actual free speed of the Grinder.
SAFETY
1. Before operation check spindle speed with a tachometer. If the
RPM exceeds the rated speed stamped on tool, servicing is required.
2. Inspect grinding wheels for bends, chips, nicks, cracks or severe
wear. If the wheel has any of these, or has been soaked in liquids
do not use. On brushes check for loose wires that may y o in
operation.
3. Start new grinding wheels under a steel bench. Run at full
throttle for one minute. Defective wheels usually come apart im-
mediately. When starting a cold wheel apply to work slowly, allow
wheel to warm gradually.
4. Model 46ARA grinders equipped with collets are intended for
mounted wheels,points and carbide burrs. They are not guarded
for type 1 wheels. If you have a type 1 wheel application,please
purchase a guard (4604A, 405A Guards).
5. The Model 46ARA Grinders are equipped with a guard from the
manufacturer. A guard is not needed for :a.) mounted wheels two
inches (50 mm) or smaller; b.) grinders used for internal work,
while within the work being ground.
6. At least one-half of the mandrel length (i.e. mounted wheel,
burr, etc.) must be inserted into the collet. Secure collet chuck
tightly.
7. Safety levers that prevent accidental startup are available from
the manufacturer.(402-26).
8. Before mounting or removing a wheel, disconnect grinder from
air supply. The wheel should t properly on arbor, do not use bush-
ings or wheel anges to adapt a wheel to any
arbor unless recommended by the manufacturer.
(Wheel anges should be at least 1/3 the diam-
eter of the grinding wheel.)
9. Wear safety goggles and other protective
clothing. Continuous exposure to vibration may
cause injury to your hands and arms.(See regu-
lations.)
10.Properly maintained air tools are less likely
to fail or cause accidents. If tool produces an
unusual sound or vibrations repair immediately.
11. NEVER MODIFY ANY PART OF THE
TOOL OR ACCESSORIES!!
DisassemblY
1. Disconnect air supply and remove all
wheels and accessories.
2. Secure the tool in vise vertically with angle
head toward the upward direction. Clamp onto
ats of the motor housing (402-132).
3. Unscrew lock nut (406-38). Disconnect
angle housing from motor housing.)
4. Remove coupling (406-41), exhaust sleeve
(410-G-17S), o-ring (400-51) and exhaust
screen (400-G-25).
5. Unscrew motor retainer (406-39). (Flats
are provided for a wrench.
6. Remove motor assembly from motor hous-
ing. Remove from vise.
7. Remove snap ring (404-39) from rear of
motor assembly. Remove bearing cover (404-
38) and o-ring (594016).
8. Remove snap ring (592016) out of spindle
groove.
9. Install brass jaws onto vise. Secure the
motor assembly vertically in the vise with the
geared end toward the downward direction.
10. Clamp onto the outside diameter of cylinder
(400-2G) and rear endplate (404-19).
11. Lightly tap spindle (406-14) out of rear
bearing (404-9) with use of a 3/16” punch.
DON’T drop the motor assembly. Remove from
vise.
12. Push the rear bearing out of the read end-
plate with use of a small screwdriver.
13. Remove rotor (400-5), blades (400-6), key
(400-10) and front endplate (400-7) from the
