Henry Tools 46 ARA Guide

The henry Tool Co., ManufaCTured by henry Tools
498 so. belvoir blvd., souTh euClid, oh 44121 u.s.a.
Ph: [phone] or [phone] ● Fax: [phone] or [phone]
Email: da[email protected] ● WEbsitE: WWW.hEnrytools.com
MODEL 46RAS shown with 4” Guard.
General Safety and Maintenance Manual
MODELS
46 ARA
46 ARAS
46 ARAC
46 RASD
Model
Number
Exhaust Direc-
tion
Throttle
Type Speed Power Output
Case
Material
46 ARA Front
or
Side
(L) Lever
or
(K) Safety
Lever
13000
to 14000
R.P.M (13500rpm
is standard)
0.9 H.P.
(675 W)
Steel
or
Aluminum
46 ARAS
46 ARAC
Case
Material
Weight
Length Diameter Air
Consumption Spindle Thread
Aluminum Steel
Steel
or
Aluminum
2.8 Lbs
(1.3 Kg)
3.5 Lbs
(1.6 Kg)
9.1 Inches
(231 mm)
1.6 Inches
(41 mm)
25 CFM
(11.8 L/S)
3/8-24 x 0.98 Inch (25mm)
1/4 Inch Burrs/Mounted Points

HENRY TOOLS, INC. Ph: [phone] or [phone]
General Operators Instructions and Service Manual
www.HenryTools.com | Page 102 Revised 02/11/16
For additional product information visit our website.
MODELS
46 ARA
46 ARAS
46 ARAC
46 RASD

HENRY TOOLS, INC. Ph: [phone] or [phone]
PART NUMBER DESCRIPTION
209-1 ERICKSON STYLE COLLET NUT
209-1/8 1/8” COLLET INSERT
209-1/4 1/4” COLLET INSERT
209-5/16 5/16” COLLET INSERT
209-3/8 3/8” COLLET INSERT
209-1/4 1/4” COLLET INSERT
209-5/16 5/16” COLLET INSERT
209-3/8 3/8” COLLET INSERT
300-G-29 BEARING
400-G-11 FRONT BEARING
PART NUMBER DESCRIPTION
400-G-25 MUFFLER SCREEN
400-G-26 THROTTLE LEVER
400-G-29 THROTTLE VALVE-INCLUDES 844302
400-G-34 SPRING
400-G-38 COLLET NUT
400-G-42 3/8-24 FLANGE (2”-3”WHEELS)
400-G-47 3/8-24 JAM NUT
400-2G CYLINDER
400-5 ROTOR
400-6 BLADE (5 REQ.)
General Operators Instructions and Service Manual
www.HenryTools.com | Page 103 Revised 02/11/16
For additional product information visit our website.
MODELS
46 ARA
46 ARAS
46 ARAC
46 RASD

HENRY TOOLS, INC. Ph: [phone] or [phone]
General Operators Instructions and Service Manual
www.HenryTools.com | Page 104 Revised 02/11/16
For additional product information visit our website.
MODELS
46 ARA
46 ARAS
46 ARAC
46 RASD
PART NUMBER DESCRIPTION
400-7 FRONT ENDPLATE
400-9 REAR OUTPUT BEARING
400-10 KEY
400-44 CYLINDER ROLL PIN
400-46 SNAP RING
400-51 O-RING
402-126 SAFETY LEVER BARE
402-127 SAFETY LEVER PIN
402-128 LOCKOUT LEVER FOR SAFETY LEVER
402-129 SAFETY LEVER SPRING
402-132 ALUMINUM CASE (SPECIFY SPEED)
402-132-S STEEL CASE (SPECIFY SPEED)
402-132-S-FT STEEL FLOW THRU CASE
404-9 REAR MOTOR BEARING
404-19 REAR ENDPLATE
404-38 BEARING COVER
404-39 SNAP RING
406-1 OUTPUT HOUSING (MAIN HEAD
UNIT)
406-4 KEY
406-10 GEAR SET (SOLD AS SET)
406-14A MOTOR SPINDLE
406-15 GEAR SPACER
406-15-CS COLLET OUTPUT SPINDLE
406-17 3/8-24 X .980 OUTPUT SPINDLE
406-17-625 5/8-11 X .980 OUTPUT SPINDLE
406-17-DA ERICKSON COLLET SPINDLE
406-38 LOCKNUT
406-39 MOTOR RETAINER
406-40 HEAD RETAINER NUT
406-41 COUPLING
406-45 SNAP RING
410-G-17F-S STEEL FRONT EXHAUST SLEEVE
410-G-17-S STEEL SIDE EXHAUST SLEEVE (STAN-
DARD)
500-G-44 3/8 ID FLANGE (4”-5”WHEELS)
700-34 5/8-11 JAM NUT
700-37 THROTTLE LEVER PIN
1100-680 5/8 I.D. FLANGE (6” OR SMALLER
WHEELS)
1100-682 3/8 I.D. FLANGE FOR 5”-6”WHEELS
PART NUMBER DESCRIPTION
590031 BEARING
591046 SCREW
592016 SNAP RING
594016 O-RING
832636 GASKET
841552 3/8 NPT TO 3/8 NPT BUSHING
841553 3/8 NPT TO 1/4 NPT
BUSHING(STANDARD)
844302 O-RING
869311 THROTTLE VALVE CAP
GUARDS
540875 4”TYPE 27 GUARD
TOOLS /WRENCHES
490-3 PIN SPANNER
1100-044 7/16”WRENCH
1100-063 5/8”WRENCH
1100-068 WRENCH 11/16”
1100-075 WRENCH 3/4”
1100-094 15/16”WRENCH
ASSEMBLIES
PART NUMBER DESCRIPTION
510240 MOTOR REPAIR KIT
510118 ANGLE HEAD REPAIR KIT
402-26 SAFETY LEVER ASSY.
AA-402-132 ALUMINUM CASE ASSY. SPECIFY
SPEED FOR CASE ASSY.
AA-402-132-K ALUMINUM SAFETY CASE ASSY.
SPECIFY SPEED FOR CASE ASSY.
AA-402-132-S STEEL CASE ASSY. SPECIFY SPEED
FOR CASE ASSY.
AA-402-132-SK STEEL SAFETY CASE ASSY. SPECIFY
SPEED FOR CASE ASSY.
ACCESSORIES
PART NUMBER DESCRIPTION
300-16 1/8” COLLET ADAPTER
400-78 3/8-24 TO 5/8-11 ADAPTER
405-24 BACKING PLATE FOR 490-KR
490-K 3/8-24 X .980 TYPE 27 ADAPT. ASSY.
490-KR 3/8-24 X .580 TYPE 27 ADAPT. ASSY.
490-1 BACKING PLATE FOR 490-K

HENRY TOOLS, INC. Ph: [phone] or [phone]
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

HENRY TOOLS, INC. Ph: [phone] or [phone]
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1. front motor assembly.
2. Remove retaining ring (400-46) from the motor
spindle with use of snap ring pliers.
3. Support the front spindle assembly vertically on a
suitable drill block. Press spindle through front bearing
(400-G-11) with an arbor press.
angle HeaD DisassemblY
1. Secure right angle head assembly in vise. Remove
retainer (406-40) using a wrench. Remove angle head
from vise.
2. Grasp end of pinion gear (406-10) and pull pinion
gear assembly from angle head.
3. Secure the pinion gear assembly in vise vertically
with gear head (406-10) in downward direction. Clamp
onto the side of gear spacer (406-42) and rear most
bearing (300-G-29). Lightly tap the pinion gear stem
through the rear bearing with use of a 3/16 inch punch.
Remove from vise.
4. Support the pinion gear stem assembly vertically on
a suitable drill block. Press the pinion gear stem o of
bearing (300-G-29) using an arbor press.
5. Remove retaining ring (406-45).
6. Grasp the output spindle (406-17) and pull entire
assembly free from angle head (406-1B).
7. Remove screw (591046) from end of spindle as-
sembly.
8. Support the spindle assembly vertically on a suit-
able drill block. Press spindle through bearings (400-9) &
(590031), spacer (406-15), ring gear (406-10), and key
(406-4).
9. OPTIONAL: To check the throttle valve, secure
the motor housing horizontally in a vise. Unscrew and
remove the throttle valve cap (869311). Lift out throttle
valve spring (400-G-34) and throttle valve (400-G-29).
Replace o-ring (844302) if worn.
mOTOR assemblY
1. Clean all parts before assembly.
2. Support bearing (400-G-11) on a suitable drill block.
Press spindle (406-14A) through bearing until it bottoms
on shoulder.
3. Place retaining ring (400-46) into groove in spindle.
4. Slide front endplate (400-7) over spindle and onto
front bearing (400-G-11).
5. Place key (400-10) into keyway in spindle. Slide ro-
tor (400-5) onto spindle.
6. Replace all 5 blades (400-6) into slots. Place cylinder
(400-2G) over rotor. (with cylinder pin facing upwards).
7. Place rear endplate (404-19) locating cylinder pin in
smaller hole of the rear endplate.
8. Replace bearing (404-9) in rear endplate. Tap in
place with a suitable bearing driver.
9. Place snap ring (592016) in spindle groove. Place
o-ring (594016), bearing cover (404-38) and snap ring
(404-39) into rear of end plate.
10. Secure case (402-132) in vise vertically. Slide motor
assembly into case.
11. Replace o-ring (400-51), exhaust screen (400-G-
25), and exhaust deector (410-G-17S).
12. Screw motor retainer (406-39) into case and tighten
without damaging threads. (Flats are provided for a
wrench).
angle HeaD assemblY
1. Press bearing (300-G-29) on gear stem (406-10)
with an arbor press.
2. Place spacer (406-42) and bearing (300-G-29) onto
end of gear stem with arbor press.
3. Press bearing (590031) onto spindle (406-17). Place
key (406-4) in slot of spindle.
4. Place ring gear (406-10) onto spindle and over the
top of the key in spindle and press together with an
arbor press.
5. Place spacer (406-15) and bearing (400-9) over end
of spindle. Press in place with arbor press.
6. Thread screw (591046) in end of spindle and
tighten.
7. Grease the teeth of the gears. (important).
8. Place spindle assembly into housing (406-1B).
9. Replace retaining ring (406-45) into groove in front
of angle head.
10. Slide lock nut (406-38) over end of housing and
tighten retainer nut (406-40).
11. Replace coupling (406-41) on spline on end of motor
spindle. Place angle head onto end of motor housing.
Align spline inside coupler.
12. Tighten lock nut on motor case and run tool.
13. Replace guard on tool. Check RPM with a reliable
tachometer. Tool must run at or below speed stamped on
tool.
MODELS
46 ARA
46 ARAS
46 ARAC
46 RASD