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4" AIR ANGLE GRINDER
ASSEMBLY and OPERATING INSTRUCTIONS
®
3491 Mission Oaks Blvd. / Camarillo, CA 93011
®
Copyright © 1997 by Harbor Freight Tools . All rights reserved.
No portion of this manual or any artwork contained herein may be reproduced in any
shape or form without the express written consent of Harbor Freight Tools.
For technical questions and replacement parts, please call 1-800-444-3353.
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SPECIFICATIONS Air Pressure 90 PSI Air Consumption 6 CFM Air Inlet 1/4" NPT Grinding Wheel 24 Grit, 4" x 1/8" SAVE THIS MANUAL You will need the manual for the safety warnings and cautions, assembly instructions, operating procedures, maintenance procedures, trouble shooting, parts list, and diagram. Keep your invoice with this manual. Write the invoice number on the inside of the front cover. Keep both this manual and your invoice in a safe, dry place for future reference. SAFETY WARNING & CAUT
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12. REMOVE ADJUSTING KEYS AND WRENCHES. Make it a habit to check that keys and adjusting wrenches are removed from the tool or machine work surface before plugging it in. 13. AVOID UNINTENTIONAL STARTING. Do not carry any tool with your finger on the trigger, whether it is connected to the compressor or not. 14. STAY ALERT. Watch what you are doing; use common sense. Do not operate any tool when you are tired. 15. CHECK DAMAGED PARTS. Before using any tool, any part that appears damaged should b
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ASSEMBLY Step 1: Thread the HANDLE (#47) into the side of the Angle Grinder as shown in Figure 1. Tighten. Angle Grinder Assembly Handle (#47) Figure 1 — Handle Assembly Step 2: Remove the FLANGE NUT (#46) from the ARBOR (#4). Warning: There are certain applications for which this tool was designed. Harbor Freight Tools strongly recommends that this tool not be modified and/or used for any application other than which it was designed. All accessories must be rated for at least the RPM speed r
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Step 3: Place the GRINDING WHEEL (#45) onto the ARBOR with the Label side of the GRINDING WHEEL against the FLANGE (#43) as shown in Figure 2. Angle Grinder Assembly Flange (#43) Grinding Wheel (#45) Grinding Wheel Label Figure 2 — Attaching the Grinding Wheel Page #5 -- SKU: 30304
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Step 4: Thread the FLANGE NUT (#46) onto the ARBOR. Tighten by hand. Step 5: Place the WRENCH (#48) onto the flats of the ARBOR. You may have to turn the ARBOR slightly to fit the WRENCH on. Step 6: Insert the prongs of the WRENCH (#49) into the two holes in the FLANGE NUT as shown in Figure 3. Wrench (#48) Grinding Wheel (#45) Flange Nut (#46) Wrench (#49) Figure 3 — Securing the Grinding Wheel Page #6 -- SKU: 30304
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Step 7: Hold the flat WRENCH (#48) while tightening the angled WRENCH (#49) to tighten the Flange Nut as shown in Figure 4. Wrench (#48) Grinding Wheel (#45) Wrench (#49) Figure 4 — Tightening the Flange Nut Step 8: Remove the WRENCHES. Air Connection Step 1: You will need a Union fitting (sold separately) before you can connect your Angle Grinder to an air compressor. Step 2: Attach the Union fitting to the Angle Grinder and tighten. Step 3: Attach an Air Coupler (sold separately) to the Unio
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drops of oil at a time are necessary. Too much oil will collect inside the tool and be blown out during the exhaust cycle. ONLY USE PNEUMATIC TOOL OIL. Do not use detergent oil or additives as these lubricants will cause accelerated wear to the seals in the tool. Dirt and water in the air supply are major causes of pneumatic tool wear. Use a filter/oiler for better performance and longer life. The filter must have adequate flow capacity for the specific application. Consult the manufacture
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Step 6: To operate the Angle Grinder, press the THROTTLE LEVER LOCK (#61) forward while depressing the THROTTLE LEVER (#59) as shown in Figure 6. Throttle Lever (#59) Throttle Lever Lock (#61) Figure 6 — Operating the Angle Grinder Step 7: Place the spinning GRINDING WHEEL (#45) onto the material to be ground. Let the weight of the Angle Grinder do the work. Do not press the Angle Grinder into the material. If the Angle Grinder stalls, release the THROTTLE LEVER immediately. Step 8: Grind u
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Step 3: Apply a few drops of oil to the THROTTLE LEVER (#59) as shown in Figure 7. Work the THROTTLE LEVER a few times to lubricate. Air Inlet Throttle Lever (#59) Throttle Lever Lock (#61) Figure 7 — Lubrication Points Periodically check the condition of the GRINDING WHEEL (#45). If more than 1/2" of the GRINDING WHEEL is gone, or if the circular lines in the top of the GRINDING WHEEL are no longer visible, you must replace the GRINDING WHEEL with an approved replacement Wheel from Harbor F
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PARTS LIST Item# Description Qty Item# Description Qty 1 Motor Housing 1 29 Bevel Pinion 1 2 Seal Plate 1 30 O-Ring 1 3 Ball Bearing 1 39 Exhaust Deflector 1 4 Arbor 1 40 Tapping Screw 2 5 Ball Bearing 1 41 Plug 1 6 Woodruff Key 1 42 O-Ring 1 7 Bevel Gear 1 43 Flange 1 8 Wave Washer 1 45 Grinding Wheel 1 9 External Stop Ring 1 46 Flange Nut 1 10 Gasket 1 47 Handle 1 11 Retainer 1 48 Wrench 1 12 Center Wheel Guard 1 49 Wrench 1 13 Spring Washer 5 50 Ball Bearing 2 14 Hex Head Bolt 5 51 Throttle V
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ASSEMBLY DIAGRAM Page #12 -- SKU: 30304
