5″ High Speed Air Sander Item 68739 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®. All rights reserved.
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.
e. Do not overreach. Keep proper footing and balance at all times. Proper footing and balance enables better control of the tool in unexpected situations. f. Maintain the tool with care. Keep a cutting tool sharp and clean. A properly maintained tool, with sharp cutting edges reduces the risk of binding and is easier to control. f. 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. g.
Symbols and Specific Safety Instructions Symbol Definitions Symbol no .../min Property or statement No-load speed Revolutions or reciprocation per minute PSI Pounds per square inch of pressure ft-lb Foot-pounds of torque BPM Blows per minute CFM Cubic Feet per Minute flow SCFM Cubic Feet per Minute flow at standard conditions NPT National pipe thread, tapered NPS National pipe thread, straight WARNING marking concerning Risk of Eye Injury. Wear ANSI‑approved eye protection.
Vibration Precautions This tool vibrates during use. Repeated or long-term exposure to vibration may cause temporary or permanent physical injury, particularly to the hands, arms and shoulders. To reduce the risk of vibration-related injury: 1. Anyone using vibrating tools regularly or for an extended period should first be examined by a doctor and then have regular medical check-ups to ensure medical problems are not being caused or worsened from use.
Functional Description Specifications Operating Air Pressure 90 PSI Air Inlet 1/4″ -18 NPT Maximum Speed* 18,000 RPM Average Air Consumption 4 CFM @ 90 PSI Pad Capacity 7/8″ arbor x 5″ * Maximum speed at stated maximum air pressure. Excess air pressure is hazardous and may cause the tool to exceed stated maximum speed.
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. Note: For additional information regarding the parts listed in the following pages, refer to the Assembly Diagram near the end of this manual. Note: This air tool may be shipped with a protective plug covering the air inlet. Remove this plug before set up. Air Supply 2.
Page 8 For technical questions, please call 1-800-444-3353.
SKU 68739 For technical questions, please call 1-800-444-3353.
1. Insert the Spindle Lock Pin (24) into the hole on the Spindle Ring (21). See Figure D. Operating Instructions 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. Spindle Lock Pin (24) Pad (22a/b/c) Spindle Ring (21) Inspect tool before use, looking for damaged, loose, and missing parts. If any problems are found, do not use tool until repaired.
General Operating Instructions Note: Remove the Spindle Lock Pin before use. 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. 2. Squeeze the Trigger and allow the tool to come up to full speed. 3. The tool′s speed can be adjusted by turning the Air Regulator. 4. Apply the sandpaper disc to the workpiece lightly and at a slight angle to prevent the Arbor Nut from gouging the workpiece.
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: Turn off the tool, detach the air supply, safely discharge any residual air pressure in the tool, and release the trigger before performing any inspection, maintenance, or cleaning procedures.
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. Do not exceed maximum air pressure. 2. Clean around trigger to ensure free movement. 3. Lubricate using air tool oil according to directions. 2. Obstructed trigger. 3. Incorrect lubrication or not enough lubrication. 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.
Assembly Diagram SKU 68739 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.
