Proto J138WP-M, J150WP-M Operation And Maintenance Manual
J138WP-M and J150WP-M
Operation and Maintenance Manual
To reduce the risk of injury, read and understand these safety
warnings and instructions before using the tool. Keep these
instructions with the tool for future reference. If you have any
questions, contact your PROTO® representative or distributor.
WARNING
3/8" Mini Air Impact Wrench
1/2" Mini Air Impact Wrench
1/2" J150WP-M
3/8" J138WP-M
© 2015 PROTO
2
INTRODUCTION
The PROTO® J138WP-M and J150WP-M are precision-built tools, designed for professionals for high torque assembly
and disassembly of threaded fasteners. These tools will deliver efficient, dependable service when used correctly and
with care. As with any fine power tool, for best performance the manufacturer’s instructions must be followed. Please
study this manual before operating the tool and understand the safety warnings and instructions. The instructions on
installation, operation and maintenance should be read carefully, and the manuals kept for reference. NOTE: Additional
safety measures may be required because of your particular application of the tool. Contact your PROTO® Distributor with
any questions concerning the tool and its use.
PROTO INDUSTRIAL TOOLS
2195 East View Parkway
Suite 103
Conyers, Georgia 30013
Phone: +1 800-800-TOOL
Fax: +1 770-648-9108
www.protoindustrial.com
TABLE OF CONTENTS
Introduction 2
Safety Instructions 3
Specifications 4
Getting Started 5
Tool Components 6, 7
Contact Information 8
WARNING
IMPORTANT SAFETY INFORMATION ENCLOSED.
READ THIS MANUAL BEFORE OPERATING THE MACHINE.
SAVE FOR FUTURE REFERENCE
FAILURE TO OBSERVE THE FOLLOWING WARNINGS COULD RESULT IN INJURY.
Do not use damaged, frayed or deteriorated air hoses
and fittings.
Air powered tools can vibrate in use. Vibration, repetitive
motions or uncomfortable positions may be harmful to
your hands and arms. Stop using any tool if discomfort,
tingling feeling or pain occurs. Seek medical advice before
resuming use.
Do not carry the tool by the hose.
Keep body stance balanced and firm. Do not overreach
when operating this tool.
Always turn off the air supply and disconnect the air
supply hose before installing, removing or adjusting any
accessory on this tool, or before performing any maintenance on this tool.
Always wear hearing protection when operating
this tool.
Always wear eye protection when operating or
performing maintenance on this tool.
Always wear respiratory protection when operating
this tool.
Operate at 90 psig (6.2 bar / 620 kPa) Maximum
air pressure.
6.2 bars
(90 psig/
620 kPa)
6.2 bars
(90 psig/
620 kPa)
6.2 bars
(90 psig/
620 kPa)
6.2 bars
(90 psig/
620 kPa)
6.2 bars
(90 psig/
620 kPa)
6.2 bars
(90 psig/
620 kPa)
3
GENERAL SAFETY INSTRUCTIONS
Keep away from children
Always wear ANSI Z87.1 eye protection when operating or performing maintenance on this tool. Everyday eye glasses
are not safety glasses
Always wear hearing protection when operating this tool
Keep hands, loose clothing and long hair away from rotating end of tool
Anticipate and be alert for sudden changes in motion during start up and operation of any power tool
Keep body stance balanced and firm. Do not overreach when operating this tool
Use clamps or another practical way to secure and support the workpiece to a stable platform. Holding the work by
hand or against the body is unstable and can lead to loss of control
Do not operate this tool for long periods of time. Vibration caused by tool action may be harmful to your hands and
arms. Stop using any tool if discomfort, tingling feeling or pain occurs. Seek medical advice before resuming use
Stay alert. Do not use the tool while tired or under the influence of drugs, alcohol, or medication
Use only impact accessories. Non-impact accessories may break and cause a hazardous condition. Inspect accesso-
ries prior to use to ensure that it con tains no cracks.
Do not operate this tool in the presence of flammable liquids, gasses, dust, or explosive atmospheres
This tool is not insulated against electric shock, contact with a live wire will make exposed metal parts live
Always turn off the air supply and disconnect the air supply hose before installing, removing or adjusting any acces-
sory on this tool, or before performing any maintenance on this tool
Avoid unintentional starting. Be sure trigger is off before connecting to the air supply
For safety, top performance, and maximum durability of parts, operate this tool at 90 psig (6.2 bar / 620 kPa)
maximum air pressure at the inlet with 3/8’’ (10mm) inside diameter air supply hose. Adequate air supply volume
is required for full power. Restrictions in the supply and volume will cause a drop in air pressure when the trigger is
pulled resulting in lower power
Do not use damaged, frayed or deteriorated air hoses and fittings
Do not lubricate tools with flammable or volatile liquids such as kerosene, diesel or jet fuel
Do not remove any labels. Replace any damaged label
Tool service must be performed by qualified repair personnel. When servicing, use only PROTO® authorized, identical
replacement parts. Use only lubricants recommended by PROTO
®
Do not use this tool at heights exceeding 6 feet (2m)
Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals
known to the State of California to cause cancer, birth defects or other reproductive harm.
Some examples of these chemicals are:
- lead from lead-based paints
- crystalline silica from bricks and cement and other masonry products
- arsenic and chromium from chemically-treated lumber
Your risk from these exposures varies, depending on how often you do this type of work. To reduce your exposure to
these chemicals: work in a well ventilated area, and work with approved safety equipment, such as those dust masks
that are specially designed to filter out microscopic particles
Do not use the tool if the trigger does not turn the tool on or off
Accessories and tools get hot during operation. Wear gloves when touching them
Inspect anvils and hog rings prior to use. Missing or damaged items should be replaced before use
4
1/4” NPT
HIGH FLOW
FITTING
AIR HOSE
3/8” (10 mm)
I.D. MIN.
COMPACT
Refer to chart below
for size
SPECIFICATIONS
HIGH TORQUE
Refer to chart below for
breakaway torque specs
SPECIFICATIONS
Model #
Square
Drive
Blow
Rate
Breakaway
Torque
Noise Level Vibration Level
in bpm ft-lbs / Nm Pressure dB(A) Power dB(A) Pressure dB(C) m/s
2
J138WP-M 3/8 1260 445 / 603 93.2 3 104.2 3 <130 3 7.78 1.27
J150WP-M 1/2 1650 635 / 861 97.1 3 108.1 3 <130 3 9.57 1.44
Model #
Free
Speed
Average Air
Consumption
Working
Pressure
Weight Dimensions
rpm cfm / l/min psi / bar lbs / kg in / mm
J138WP-M 6,000 3 / 85 90 / 6.2 2.8 / 1.3 4.4 x 2.4 x 6.8 / 111 x 61.5 x 173
J150WP-M 10,000 4.5 / 127 90 / 6.2 2.8 / 1.3 4.4 x 2.4 x 6.8 / 111 x 61.5 x 173
* = measurement uncertainty in dB(A) ** = measurement uncertainty in m/s²
VARIABLE SPEED TRIGGER
For maximum speed control
ONE-HAND FORWARD/REVERSE
SWITCH
Integrated 3-position
regulator for power control and
ease of use
RUBBER BUMPERS
Protect the tool
from damage
COMFORT GRIP
Rubber injected overlay,
resistant to oils and acids
5
GETTING STARTED
Always operate, inspect and maintain this tool in accordance with all regulations (local, state, federal and country) that may apply to
hand-held / hand-operated pneumatic tools
For maximum performance, the air coupler on the wall should be the next size larger than the air coupler used on the tool. The coupler
closest to the tool should not be smaller than the proper air supply hose size
Be sure all hoses and fittings are the correct size and are tightly secured
Always use clean, dry air at 90 psig maximum air pressure. Dust, corrosive fumes and/or excessive moisture can ruin the motor of an
air tool
Inject the tool every 100-200 cycles with 1-3 grams of grease. Applications vary and grease may need to be applied more in colder
climates/conditions and less in hotter climates/conditions. The grease that should be used should be Petroleum or Synthetic, NLGI
Grade 2, -4/2300 F(-20/1100 C). The tool has a 1/8” Flush type grease fitting. If lower performance is observed immediately after
adding grease, service is needed to remove the build-up within the clutch housing
The use of a hose whip is recommended. A coupler connected directly to the air inlet increases tool bulk and decreases tool
maneuverability
The regulator has 3 power positions, position 1 is the lowest and 3 is full power. To set the tool power with the regulator, turn the
dial until the power setting represented by 1, 2 or 3 is under the lever in the forward position as shown in Figure A. When the reverse
setting is selected the tool will operate, in reverse, at full power regardless of the power setting that is chosen. The F on the handle
represents forward and the R represents reverse
The Forward / Reverse Lever must be fully engaged in either the forward or reverse position to ensure the tool works with maximum
performance. If the Forward / Reverse Lever is positioned in the middle (see example below, bottom left picture) between forward and
reverse, the tool will not be as efficient and powerful
Use Hi-Flow air fittings and couplers for maximum tool performance
Figure A
Not Engaged - No Power
Power Setting 3 (Max)
Power Setting 2Power Setting - 1 (Low)
FORWARD/REVERSE LEVER
REVERSE POSITION
FORWARD POSITION
POWER SETTING
EMERGENCY
GATE VALVE
PLACING TOOL IN SERVICE
LUBRICATION
Always use an air line lubricator with this tool. After every eight
hours of operation, if a lubricator is not used on the compressed
air network, inject 1/2 to 1cm3 of approved air tool oil through the
machine’s inlet connection.
6
410
411
L
401
413
202
104A*
L __
104*
417*
420
I
105*
418
*
(*) Wearing Parts
A
306
305
I Jl38-KI
102A*
103A*
7
All parts available through www.servicenet.protoindustrial.com
ITEM # PART # DESCRIPTION QTY
101 N449222 HAMMER CASE BUSHING 1
104 N449227 1/2" ANVIL ASSEMBLY 1
102 N449223 1/2" SOCKET RETAINER RING 1
103 N449225 1/2" O-RING 1
104A N449228 3/8" ANVIL ASSEMBLY 1
102 N449224 3/8" SOCKET RETAINER RING 1
103 N449226 3/8" O-RING 1
105 N449229 HAMMER PIN 2
106 N449230 HAMMER FRAME 1
107 N449231 HAMMER 1
201 N449269 3/8" HOUSING 1
201 N449270 1/2" HOUSING 1
202 N449283 FRONT BUMPER 1
203 N449285 REAR BUMPER 1
204 N449286 GASKET (PACKING)-MOTOR 1
205 N449287 REAR COVER PLATE 1
206 N449288 HEX.SOC.HD.BOLT 4
207 N449289 HANGER 1
208 N449292 GRIP 1
301 N449293 BEARING 1
302 N449298 FRONT BEARING PLATE 1
303 N449299 ROTOR BLADES 6
304 N449300 ROTOR 1
ITEM # PART # DESCRIPTION QTY
305 N449301 CYLINDER 1
306 N449302 REAR END PLATE 1
307 N449303 BEARING 1
308 N449304 SPRING PIN 1
309 N449305 SPRING PIN 1
401 N449296 TRIGGER 1
402 N449297 SPRING 1
403 N449306 REGULATOR A 1
404 N449307 LEVER 1
405 N449315 REVERSE VALVE 1
406 N449316 O-RING 1
407 N449317 O-RING 1
408 N449318 BALL-DETENT 2
409 N449319 POSITIONING SPRING 1
410 N449320 O-RING 1
411 N449321 REGULATOR B 1
412 N449322 TRIGGER PIN-TIP VALVE 1
413 N449323 SPRING PIN 1
414 N449324 SPRING PIN 1
415 N449325 BUSHING-TIP VALVE 1
416 N449326 SEAL-TIP VALVE 1
417 N449327 TIP VALVE 1
418 N449328 SPRING 1
419 N449330 EXHAUST DEFLECTOR 1
420 N449332 AIR INLET 1
8
CUSTOMER SERVICE
We at PROTO are committed to our customers, please reference the following phone number for a direct contact to one of our
customer technicians. They will be more than happy to help with any service or warranty questions you may have about your power tool.
PROTO INDUSTRIAL TOOLS
2195 East View Parkway
Suite 103
Conyers, Georgia 30013
Phone: +1 800-800-TOOL
Fax: +1 770-648-9108
www.protoindustrial.com
CE DECLARATION OF CONFORMITY
WE, PROTO INDUSTRIAL TOOLS, 2195 EAST VIEW PARKWAY, SUITE 103, CONYERS, GEORGIA 30013, DECLARE UNDER OUR SOLE
RESPONSIBILITY THAT THE PRODUCTS J138WP-M 3/8” MINI AIR IMPACT WRENCH AND J150WP-M 1/2” MINI AIR IMPACT WRENCH
- CONFORM WITH THE DIRECTIVE AND STANDARDS "MACHINERY" DIRECTIVE 2006/42/CE
- AND ARE IN CONFORMITY WITH THE PROVISIONS OF THE HARMONISED EUROPEAN STANDARD
EN ISO 12100:2010
EN ISO 11148-6:2012
EN ISO 15744:2008
EN ISO 28927-2:2009
KEVIN LIN
QUALITY MANAGER
09.23.2015
Manual #N455497
J138WP-M and J150WP-M
Operation and Maintenance Manual
WARRANTY
We warrant that this tool shall be free from manufacturing defects for a period of TWO YEARS from the original purchase date. Our
obligation to the original purchaser shall be limited to repairing or replacing, at our expense (not including shipping charges) a defective
tool if returned by the original purchaser within two years from the date of purchase, all incoming shipping charges prepaid. THIS
WARRANTY DOES NOT COVER DEFECTS OR DAMAGES TO THE TOOL (i) after the warranty period expires; (ii) resulting from misuse or
abnormal operation; (iii) resulting from a failure to properly lubricate, maintain or operate the tool; or (iv) resulting from any repair or
maintenance services performed by any party other than PROTO® at all PROTO® Service Centers or a person authorized by PROTO® to
provide repair and maintenance services for this tool.
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