Wilson 3A-750, 3A-1000, 3A-450 User Manual

SPECIFICATIONS

SM-97

SM-97

Model no. 3A-450

38640-0450

Free Speed (RPM)

Min. Torque Ft-Lb

Max. Torque Ft-Lb

Air Pressure psi

Air Inlet

Hose

Air Flow @Free
Speed

Spindle

450 750 1000

3 3 3

18 12 10

3A-750

38640-0750

90

3/8” NPT

3/8” I.D.

32 CFM

1/2” Dia. with 2 spots

3A-1000

38640-1000

Torq-Air-Matic

ڤModel 3A-450 (450RPM)
ڤModel 3A-750 (750RPM)

ڤModel 3A-1000 (1000RPM)

Thomas C. Wilson, Inc.

21-11 44th Avenue, Long Island City, New York 11101

Tel: [phone] Fax: [phone] http://www.tcwilson.com

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Email: [e-mail]

OPERATING INSTRUCTIONS &

SERVICE MANUAL

TO REDUCE THE RISK OF INJURY, USER MUST READ AND
UNDERSTAND OPERATOR’S MANUAL.

Thomas C. Wilson, Inc.

21-11 44th Avenue, Long Island City, New York 11101

Tel: [phone] Fax: [phone] http://www.tcwilson.com

Email: [e-mail]

SAFETY INSTRUCTIONS

SM-97

TROUBLE-SHOOTING (Cont’)

SM-97

READ AND UNDERSTAND ALL INSTRUCTIONS

Failure to follow all instructions listed below, may result
in accident, fire and/or personal injury.

!

SAVE THESE INSTRUCTIONS

WA R NI N G!

1. Do not allow corrosive gases or foreign material to enter
the unit. Moisture, oil-based contaminants, or other liquids
must be filtered out.

2. Eye protection is always required when running motor.

3. Hearing protection is recommended when in close prox­imity to all operating air motors.

4. Dust mask, non-skid safety shoes, hard hat, gloves and
other personal safety equipment must be used.

5. Stay alert, watch what you are doing, and use common
sense when operating a power tool.

6. Dress properly. Do not wear loose clothing or jewelry.

7. Keep your work area clean and well lit.

8. Do not operate power tools in explosive atmospheres, such
as in the presence of flammable liquids, gases, or dust.

9. Disconnect the tool from the air supply before installing,
making any adjustment, changing accessories, servicing or
storing tool.

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PROBLEM CAUSE & SOLUTION

Torque control will
not release at torque
setting

Torque control will
not relatch in re­verse

Caution: Disassembly or reassembly of torque control unit must be
performed by qualified personnel. It is advisable to return torque
control units to the factory or consult the factory for necessary repair.

1. Broken latch release pawl
—Replace–see pg. 8, (Pc. #36, pg. 11).

2. Broken torque spring
—Replace–see pg. 8, (Pc. #5, pg. 11).

3. Broken latch
—Replace–see pg. 8, (Pc. #34, pg. 11).

4. Broken or excessive wear on tips of all pawls
—Replace-see pg8(Pc29,36,40&42, pg.11).

5. Broken spring ends or anchor pins of latch
pawls and reverse pawl
—Replace–see pg.8, (Springs & pins, pg. 11).

6. Reaction member seized to int. gear assembly
—Consult factory

7. Broken or short roll pin stop on reaction
member. Check for scoring on stop plate sec­tion of handle connector
—Replace–see pg. 7, (Pc. #32, pg. 11).

8. Ball retainer has broken or lost any balls.
Check correct assembly of retainers.
—Replace–see pg. 9, (Pc. #43, pg. 11).

1. Broken latch or latch spring
—Replace–see pg. 8, (Pc. #28,34, pg. 11).

2. Broken reverse pawls, springs or anchor pin
—Replace–see pg.8 (Pc#39,40,41,42, pg.11).

3. Slot radii on internal gear oversized/gouged
—Replace internal gear (Pc. #10, pg. 11)

4. Insufficient torque on drive spindle end
—See note on pg.5. Hold spindle end in vise
and manually turn TAM ccw; should relatch.

5. Excessive burrs or wear on internal gears pre­venting free rotation
—Debur/replace–see pg. 7,(Pc. #10, pg. 11).

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TROUBLE-SHOOTING

SM-97

GUIDELINES FOR TUBE EXPANSION

SM-97

PROBLEM CAUSE & REMEDY

Motor will not run.

1. Inefficient air supply
—Check 90 psi and 32 CFM air supply.

2. Clogged air inlet screen
—Replace-see pg.6(pc #75, pg.13).

3. Broken or severely worn rotor blades
—Replace-see pg.6(pc #69, pg.13).

4. Rust due to improper storage of tool
—Disassemble and clean– Refer to Dis­assembly procedure.

5. Broken throttle valve pin or lever
—Replace–see pg.6(pc. #78/80, pg. 13).

Motor will not reach
RPM.

1. Insufficient air volume
—Check 32 CFM supply.

2. Dirty air inlet screen
—Clean –see pg. 6 (pc.#75, pg.13).

3. Worn rotor blades
—Replace-see pg.6(pc #69, pg.13).

4. Air supply hose chocked or too small
—See Operating Procedure recom­mended hose.

Motor stalls at high
torque

1. Insufficient air pressure
—Check 90 psi supply

2. Dirty air inlet screen
—Clean –see pg. 6 (pc.#75, pg.13).

3. Rotor blades worn, chipped or broken
—Replace-see pg.6(pc #69, pg.13).

Improperly rolled joints create additional expense to correct, whether
they are under-rolled and can be corrected merely by rerolling, or
over-rolled and require removal and replacement. The optimal joint is
one that develops a leak tight joint with adequate strength for the ser­vice intended with the minimum amount of cold working or reduction
of the tube wall. Experience
tainable with non-ferrous tubes in surface condensers by expanding
to a wall reduction of 3% to 4% after metal to metal contact of the
tube 0.D. with the tube sheet hole. Steel tubes in heat exchangers
may require wall
reductions of 5% to 10%; soft copper and aluminum tubes in heat ex­changers also require larger wall reductions in the area of 8% to 12%.
Boiler tubes requiring development of optimum joint strength require
wall reductions of 12% to 14%.
A typical example of the application of this method is indicated for a
3/4” x 18 ga. tube in a condenser.

Tube Expansion Calculations

Tube Sheet Hole Dia. .760

- Tube O.D. -.750
= Clearance =.010
+ Tube I.D. +.652
=I.D. @ Metal to Metal =.662
+4%Reduction (.049x.04x2) +.004
=Expanded I.D. =.666

indicates that joints of this type are ob-

OPERATION

Motor fails to stop

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1. Broken throttle valve spring
—Replace-see pg.6(pc #76, pg.13).

2. Valve ball does not seal
—Replace or rework valve seat-Refer to
pg. 6 (pc.#77, pg.13)

RECOMMENDED OPERATING AIR PRESSURE 90 PSI

1. Make sure there is an adequate supply of clean air of 90
psi lubricated with light machine oil of SAE 10 viscosity.
This should be done before all long runs of tube expanding
and after every fou r hours of continuous use unless an air
line lubricator of ample capacity is used. SEE
’LUBRICATION’ S ECTION BELOW.

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