Professional Air Impact Wrench 68425 3/8″ Impact Wrench 68424 1/2″ Impact Wrench 68423 3/4″ Impact Wrench 68429 1″ Impact Wrench With 6″ Anvil Read this material before using this product. Failure to do so can result in serious injury. SAVE THIS MANUAL. When unpacking, make sure that the product is intact and undamaged. If any parts are missing or broken, please call 1-800-444-3353 as soon as possible. Visit our website at: http://www.harborfreight.com Copyright© 2011 by Harbor Freight Tools®.
Save This Manual Keep this manual for the safety warnings and precautions, assembly, operating, inspection, maintenance and cleaning procedures. Write the product’s serial number in the back of the manual near the assembly diagram (or month and year of purchase if product has no number). Keep this manual and the receipt in a safe and dry place for future reference.
Proper footing and balance enables better control of the tool in unexpected situations. f. g. h. Use safety equipment. A dust mask, non-skid safety shoes and a hard hat must be used for the applicable conditions. Wear heavy-duty work gloves during use. Always wear eye protection. Wear ANSI-approved safety goggles. Always wear hearing protection when using the tool. Prolonged exposure to high intensity noise is able to cause hearing loss. Tool Use and Care a.
Symbol NPS Property or statement National pipe thread, straight WARNING marking concerning Risk of Eye Injury. Wear ANSI‑approved eye protection. 9. Do not force the tool. Use a larger one if needed. WARNING marking concerning Risk of Hearing Loss. Wear hearing protection. 11. Do not hold sockets, anvil or adapters during use. WARNING marking concerning Risk of Respiratory Injury. Wear NIOSH‑approved dust mask/respirator. WARNING marking concerning Risk of Explosion. Specific Safety Instructions 1.
Functional Description Initial Tool Set Up/Assembly Read the ENTIRE IMPORTANT SAFETY INFORMATION section at the beginning of this manual including all text under subheadings therein before set up or use of this product. Specifications Max.
Page 6 For technical questions, please call 1-800-444-3353.
Impact Wrenches For technical questions, please call 1-800-444-3353.
5. Adjust the air compressor’s output regulator so that the air output is enough to properly power the tool, but the output will not exceed the tool’s maximum air pressure at any time. Adjust the pressure gradually, while checking the air output gauge to set the right pressure range. 6. Inspect the air connections for leaks. Repair any leaks found. 7.
General Operating Instructions 6. Hold the handle firmly and place other hand on top of Housing. Then gently squeeze the Trigger. 1. If an automatic oiler is not used, add a few drops of Pneumatic Tool Oil to the airline connection before use. Add a few drops more after each hour of continual use. NOTE: For Model 68429, be sure to hold the Side Handle firmly and keep your other hand around the Main Handle while squeezing the Trigger. 2. Connect the air hose to the air inlet of the tool. 7.
User‑Maintenance Instructions Procedures not specifically explained in this manual must be performed only by a qualified technician. TO PREVENT SERIOUS INJURY FROM ACCIDENTAL OPERATION: Detach the air supply, safely discharge any residual air pressure in the tool, and release the throttle and/ or turn the switch to its off position before performing any inspection, maintenance, or cleaning procedures. TO PREVENT SERIOUS INJURY FROM TOOL FAILURE: Do not use damaged equipment.
Troubleshooting Problem Possible Causes Decreased output. 1. Not enough air pressure and/ or air flow. Likely Solutions 1. Check for loose connections and make sure that air supply is providing enough air flow (CFM) at required pressure (PSI) to the tool’s air inlet. NOTE: This is especially important for Model 68429. Do not exceed maximum air pressure. 2. Clean around trigger to ensure free movement. 3. Lubricate using air tool oil and grease according to directions. 4.
PLEASE READ THE FOLLOWING CAREFULLY THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS LIST AND ASSEMBLY DIAGRAM IN THIS MANUAL AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER OR 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.
68423 Assembly Diagram Impact Wrenches For technical questions, please call 1-800-444-3353.
68424 Parts List Part 1 2 3 4 5 7 12 13 14 15 16 17 18 19 20 21 22 23 24 Page 14 Description Motor Housing Spring Pin (2x20) Air Inlet Trigger O-Ring (4x1) Exhaust Diffuser O-Ring (50*1.5) Ball Bearing (6001zz) Rear End Plate Rotor Rotor Blade Spring Pin (3x8) Cylinder Front End Plate Ball Bearing (EE4) Air Regulator O-Ring (38.
68424 Assembly Diagram Impact Wrenches For technical questions, please call 1-800-444-3353.
68425 Parts List Part 1 2 3 4 5 7 12 13 14 15 16 17 18 19 20 21 22 23 24 25 27 28 30 Page 16 Description Motor Housing Spring Pin (2x20) Air Inlet Trigger O-Ring (4x1) Exhaust Diffuser O-Ring (43*1.5) Ball Bearing (6900zz) Rear End Plate Rotor Rotor Blade Spring Pin (2.5x5) Cylinder Front End Plate Ball Bearing (6001zz) Air Regulator O-Ring (34.65x1.
68425 Assembly Diagram Impact Wrenches For technical questions, please call 1-800-444-3353.
68429 Parts List Part 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 Page 18 Description Motor Housing Pin (4x23.8) Air Inlet Trigger Valve Stem Reverse Valve Bushing O-Ring (19.8*2.4) Valve Spring O-Ring (7.5x3.5) Spring Pin Gasket Rear Cover Ball Bearing (6204) Rear End Plate Rotor Rotor Blade Spring Pin (6*18) Cylinder Front End Plate Ball Bearing (6205z) Air Regulator O-Ring (16.8x2.
68429 Assembly Diagram Impact Wrenches For technical questions, please call 1-800-444-3353.
Limited 90 Day Warranty Harbor Freight Tools Co. makes every effort to assure that its products meet high quality and durability standards, and warrants to the original purchaser that this product is free from defects in materials and workmanship for the period of 90 days from the date of purchase.