Central Pneumatic Professional 91365 User manual

IMPIMP
IMPIMP
IMPACT WRENCH - I/2 INCHACT WRENCH - I/2 INCH
ACT WRENCH - I/2 INCHACT WRENCH - I/2 INCH
ACT WRENCH - I/2 INCH
ASSEMBLY AND OPERATING INSTRUCTIONS
®
3491 Mission Oaks Blvd., Camarillo, CA 93011
Visit ourWeb site at http://www.harborfreight.com
Copyright©2004byHarborFreightTools®. Allrightsreserved. Noportion
of this manual or any artwork contained herein may be reproduced in any
shape or form without the express written consent of Harbor FreightTools.
For technical questions and replacement parts, please call 1-800-444-3353
TO PREVENT SERIOUS INJURY,
READ AND UNDERSTAND ALL WARNINGS
AND INSTRUCTIONS BEFORE USE.
91365

SKU 91365 Page 2
Specifications
SaveThis Manual
You will need the manual for the safety warnings and precautions, assembly
instructions, operating and maintenance procedures, parts list and diagram. Keep
your invoice with this manual. Write the invoice number on the inside of the front
cover. Keep the manual and invoice in a safe and dry place for future reference.
SafetyWarnings and Precautions
WARNING: When using tool, basic safety precautions should always be fol-
lowed to reduce the risk of personal injury and damage to equipment.
Read all instructions before using this tool!
1. Disconnect air before servicing. Do not attempt to disassemble, or service
tool with air hose attached.
2. Use only specified operating air pressure. Never operate tool above the
specified operating air pressure range.
3. Do not use combustible gases. Do not use combustible gases as a power
source, or use tool in areas where combustible gases are stored.
4. Avoid possible kickback injury. Hold the tool with both hands during
operation so that your head and body are not injured by possible kickback of
the tool.
5. Use care when transporting tool. Disconnect tool from air supply when
moving tool in the workplace.Carry tool only by the handle without drawing
the trigger.
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SKU 91365 Page 3
6. Keep work area clean. Clutteredareasinviteinjuries.
7. Observe work area conditions. Do not use machines or power tools in
damp or wet locations. Don’t expose to rain. Keep work area well lighted.
8. Keep children away. Children must never be allowed in the work area. Do
not let them handle machines, tools, or extension cords.
9. Store idle equipment. When not in use, tools must be stored in a dry
location to inhibit rust. Always lock up tools and keep out of reach of children.
10. Do not force tool. It will do the job better and more safely at the rate for
which it was intended. Do not use inappropriate attachments in an attempt to
exceed the tool capacity.
11. Use the right tool for the job. Do not attempt to force a small tool or
attachment to do the work of a larger industrial tool.There are certain
applications for which this tool was designed.Do not modify this tool and do
not use this tool for a purpose for which it was not intended.
12. Dress properly. Do not wear loose clothing or jewelry as they can be caught
in moving parts. Protective, electrically nonconductive clothes and nonskid
footwear are recommended when working. Wear restrictive hair covering to
containlonghair.
13. Use eye and ear protection. AlwayswearANSIapprovedimpact
safety goggles.Wear an ANSI approved dust mask or respirator
whenworkingaroundmetal,wood,andchemicaldustsandmists.
Wearearplugs.
14. Do not overreach. Keep proper footing and balance at all times.Do not reach
overoracrossrunningmachines.
15. Maintain tools with care. Keep tools sharp and clean for better and safer
performance.Follow instructions for lubricating and changing accessories.
Inspect tool periodically and, if damaged, have them repaired by an
authorized technician.The handles must be kept clean, dry, and free from oil
and grease at all times.
16. Remove adjusting keys and wrenches. Check that keys and adjusting
wrenches are removed from the tool or machine work surface before
plugging it in.
17. Stay alert. Watch what you are doing, use common sense.Do not operate
any tool when you are tired.

SKU 91365 Page 4
18. Replacement parts and accessories. Whenservicing, use only identical
replacement parts.Use of any other parts will void the warranty.Only use
accessories intended for use with this tool.Approved accessories are
availablefromHarborFreightTools.
19. Check for damaged parts. Before using any tool, any part that appears
damaged should be carefully checked to determine that it will operate
properly and perform its intended function.Check for alignment and binding
of moving parts; any broken parts or mounting fixtures;and any other
condition that may affect proper operation.Any part that is damaged should
be properly repaired or replaced by a qualified technician.Do not use the tool
if any switch does not turn On and Off properly.
20. Do not operate tool if under the influence of alcohol or drugs. Read
warning labels on prescriptions to determine if your judgment or reflexes are
impaired while taking drugs.If there is any doubt, do not operate the tool.
21. Maintenance. For your safety, service and maintenance should be
performed regularly by a qualified technician.
Warning:The warnings, cautions, and instructions discussed in this instruc-
tion manual cannot cover all possible conditions and situations that may oc-
cur.It must be understood by the operator that common sense and caution are
factors which cannot be built into this product, but must be supplied by the
operator.
Unpacking
When unpacking, check to make sure the following parts are included.If
any parts are missing or broken, please call Harbor Freight Tools at the number on
the cover of this manual as soon as possible.

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Assembly
The Impact Wrench comes completely assembled, except for any air inlet fittings.
AirConnection
1. Attach a Union fitting (not supplied) into the Air Inlet (1)
fitting. A Union fitting is necessary before a connection can
bemadetoanAirCompressor.
2. For easy connection or removal, attach an Air Coupler (not
supplied) instead of a Union fitting.
3. Retighten all couplings and fittings.
Oiler and Filter Connection
Dirt, water, and the lack of pneumatic tool oil are major causes for tool wear.Install
anoptionaloiler-filter, as illustratedbelowforbetterperformance.
1. Connect the air tool, air hoses, filter, and oiler to the Compressor Air Outlet as
illustratedbelow.
Thefilterandoiler(notsupplied)arerecommended but not mandatory for
operation.
If the filter and oiler are not used, connect the air hose directly to the 1/4 inch,
18 NPT connector located at the Air Inlet (1) fitting.Also, a few drops of
pneumatic tool oil must be added through the air line before each use.
Note: Use pipe thread seal orTeflon tape on all threaded connections.
Operation
1. Attach the desired socket (not supplied) to the ImpactWrench making sure it
is held in place by the Socket Retainer (44).
2. Set the (1.5 HP minimum) air compressor pressure regulator to 90 PSI.
3. Connect the compressor air hose (minimum 3/8”I.D.) to the Air Inlet (1) on the
handle of the ImpactWrench Motor Housing Assy.(12).
If any air leaks are detected, disconnect the air hose and repair the leak.
(1)

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4. Set the direction of the ImpactWrench operation by pushing the ReverseValve
(9)button,leftforforward (clockwise) or rightforreverse(counterclockwise). (It
is located on the opposite side of the Air Regulator (13) knob.)
5. Fine tune the air flow with the Air Regulator (13) knob
byadjustingitfrompositions1through6. Oneallows
the lowest amount of air flow, and six the highest.
Maintenance
1. After each use, wipe the ImpactWrench with a clean cloth to remove any dirt
andgreasebuildup.
2. To maintain tool life, always lubricate the air line by adding a few drops of
pneumatic tool oil to the air line before each use.Or, install the automatic
oiler-filter system as illustrated on page 5.
3. Before each use, drain water out of the air compressor tank and condensation
from the air lines.Refer to the Air Compressor Operator’s Manual.
6. Place the socket over the nut to be tightened or loosened.
When tightening a nut, begin by threading the nut on as far as you can by
hand.After tightening, verify the recommended torque specification for the
nut, and check using a torque wrench with gauge (not supplied).
CAUTION: Do not use hand sockets and accessories. Impact wrench sockets
and accessories must be used with this tool.
7. Grip the ImpactWrench firmlywithbothhandsandsqueeze theTrigger (8).
CAUTION:If the ImpactWrench cannot loosen the nut,or if it stalls when tight-
ening, do not raise the outlet pressure of the air compressor. Do not continue
with attempts to loosen with the ImpactWrench.Use another appropriate tool
to loosen the nut.
8. When tightening or loosening is completed, remove the nut from the socket.
9. Turn the compressor off, then remove the hose connection to the Impact
Wrench.
(13)

SKU 91365 Page 7
ManualTool Lubrication
1. Disconnect the ImpactWrench from the air supply and turn it so the Air Inlet
fitting is facing upward.
2. HoldtheTrigger (8) leverdownandplaceoneteaspoonofpneumatictool oil
into the air inlet (use SAE #10 weight oil if air tool oil is not available).Holding
theTrigger lever down helps circulate the oil in the air motor.
3. Connect the Impact Wrench to the air supply and cover the exhaust port with
a towel. Run for a few seconds.Excess oil with be blown out the exhaust
port. Parts List
Item Description Qty Item Description Qty
1. Air Inlet / Strainer 1 29. Rotor Blade 6
2. Throttle Valve Spring 1 30. Front End Plate 1
2A. Throttle Valve Assy 1 31. Rear End Plate 1
3A. Throttle Valve Seat 1 32. End Plate Gasket 1
6. Throttle Valve Pin 1 33. Motor Clamp washer 2
7. Exhaust Deflector 1 34. Hammer Frame 1
8. Trigger 1 35. Hammer Pin 2
9. Reverse Valve 1 37. Hammer 2
11. O-ring 2 38. Hammer Case 1
12. Motor Housing Assy 1 38A. Hammer Case Pilot 1
13. Air Regulator 1 39. Hammer Case Gasket 1
14. Air Regulator Screw 1 40. Hammer Case Bushing 1
15. Steel Ball 1 41. Hammer Case Cap Scw 4
16. Steel Ball Spring 1 43A. Standard Anvil 1
17. Grease Fitting 1 43B. 2nd Extended Anvil 1
20A. O-ring 1 44. Socket Retainer 1
22. Rotor 1 45. Retainer O-ring 1
23. Rear Rotor Bearing 1 48. Cap 1
24. Front Rotor Bearing 1 49. Screw 1
25. Rear Rotor Bearing
Retainer 1
26. Cylinder 1
27. Cylinder Dowel 1
TK Tune-up Kit:
# 11 (2), # 29 (6), # 32, # 39, #
44, and # 45
PLEASE READTHE FOLLOWING CAREFULLY
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS DIAGRAM
IN THIS MANUAL AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER
NOR DISTRIBUTOR MAKES ANY REPRESENTATION OR WARRANTY OF ANY KIND TO
THE BUYER THAT HE OR SHE IS QUALIFIED TO MAKE ANY REPAIRS TO THE
PRODUCT OR THAT HE OR SHE IS QUALIFIED TO REPLACE ANY PARTS OF THE
PRODUCT. IN FACT, THE MANUFACTURER AND/OR DISTRIBUTOR EXPRESSLY
STATES THat ALL REPAIRS AND PARTS REPLACEMENTS SHOULD BE UNDERTAKEN
BY CERTIFIED AND LICENSEDTECHNICIANS AND NOT BY THE BUYER.THE BUYER
ASSUMES ALL RISK AND LIABILITY ARISING OUT OF HIS OR HER REPAIRS TO THE
ORIGINAL PRODUCT OR REPLACEMENT PARTS THERETO, OR ARISING OUT OF HIS
OR HER INSTALLATION OF REPLACEMENT PARTS THERETO.
NOTE: Some parts are listed and shown for illustration purposes only and
are not available individually as replacement parts.

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Assembly Drawing