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REMINGTON®
Powerdriver
Model 491
™
®
POWDER ACTUATED TOOL
MANUFACTURERS´ INSTITUTE INC.
G 028 G 029
Operating
Instructions
482-1
Important:
Read this manual and all labels carefully before operating your powder
actuated tool. This manual should always accompany the tool and be
transferred with it upon change of ownership.
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INDEX Warning: Safety Precautions............................................................. 3-11 Why A Fastener Holds ......................................................................... 12 Selecting Fasteners and Power Loads ................................................ 13 Operation ............................................................................................. 14 Parts List .............................................................................................. 1
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DEFECTIVE Warning: Safety Precautions IMPORTANT: Read these operating instructions carefully and com- pletely before trying to operate or service this tool. Improper use of this tool can cause serious injury or death from firing fastener into body or from flying debris. We expressly disclaim any liability for any injury to persons or damage to property which result from your failure to take the precautions contained in this manual. WARNING: This tool is designed only for use by qualified operat
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Safety Precautions WARNING POWDER ACTUATED TOOLS ! IN USE 482-10 4. Always clear the work area on all sides and post appropriate warning signs on job sites. 482-12 5. Make sure the work area is clean from loose material and debris. HANDLING THE TOOL 1. Never place your hand over the muzzle. Accidental discharge can cause serious injury. 2. Never place your finger on the trigger until the tool’s muzzle is against the work surface. 099494 4
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POWD POWDER LOAD LOADS Safety Precautions 3. Store powder actuated tool and power load strips in a locked container. Unload tool before storing. Keep power loads of different power levels in separate containers. 4. Never carry or pass a loaded powder actuated tool. Never point a powder actuated tool at anyone. 5. If the tool is dropped, inspect for damage and repair it before continuing to work. Never use a damaged tool. 6. Always take precaution to maintain your balance while operating a powder
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Safety Precautions ? ? ? 7. An operator taking medication should take extra precautions while handling the tool. Never drink alcoholic beverages or take medications which impair your vision, balance or judgement before using a powder actuated tool. KNOW YOUR FASTENING BASE MATERIAL Sinks in ? with ? average ? hammer blow ? CENTER TOO SOFT 482-28 PUNCH TEST 482-26 482-27 Start GREEN Point Surface POWER flattens shatters LEVEL 3 YELLOW POWER LEVEL 4 RED TOO HARD TOO BRITTLE POWER 482-29 482-30
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Safety Precautions BRICK TILE CAST IRON GLASS 482-33 2. Never attempt to drive power fasteners into very hard or brittle materials including, but not limited to cast iron, glass, tile, stone, brick, or hardened steel. Materials of this type tend to shatter and create hazard from flying particles. 3. Never make fastenings in spalled or cracked areas. 4. Never drive power fasteners into thin or easily penetrated materials unless it is backed by concrete or steel. When in doubt, such as when base m
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Safety Precautions 3" 3" 3" 3" 1X 3X 482-39 482-38 6. Do not drive power fasteners into concrete less than three times as thick as the intended fastener penetration, within 3" of the edge, within 3" of another power fastener or within 3" of a failed power fastener. WELD 1" 1/2" 482-40 TOO THIN 3/16" MIN 482-41 7. Do not drive power fasteners into steel base material less then 3/16" thick, within 2" of a weld, within 1/2" of the edge or within 1" of another power fastener. NO YES 8. When fastenin
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POWDER LOADS POWDER LOADS Safety Precautions 30 WATER 2. Should the tool fail to fire, hold the muzzle firmly against the work surface for 30 seconds. Release the trigger and remove pressure on the tool while holding the muzzle against the work surface. Again press the tool firmly against the work surface and pull the trigger. If the tool still fails to fire, hold the tool firmly against the work surface for another 30 seconds before advancing the power load strip. Use remaining loads in strip.
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L E K C I N R E B Safety Precautions Start 22 27 NOTE: GREEN Failure to start with POWER 6 7 LEVEL 3 the lowest power 5 8 4 9 level can result in YELLOW 1 POWER 3 10 overdrive condition LEVEL 4 2 11 and will result in 1 12 RED damage to tool POWER LEVEL 5 482-54 (See page 13). 2. Remington power load strips are available in three power levels – green (level 3), yellow (level 4) and red (level 5). Green is lowest power level, red is highest power level. Always start with the lowest power level
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Safety Precautions 482-59 6. Power fasteners are a permanently installed fixture. An act of demolition is required for their removal. Appropriate safety precautions must be taken. Head Shank 482-60 Plastic Flute 7. Never use common nails or other materials as fasteners. Remington Power Fasteners are manufactured from special steel and heat treated to produce a very hard yet ductile fastener. 8. Never pry a power load out of the strip. Prying can discharge the load causing serious injury (See Tro
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Why A Power Fastener Holds WHY A POWER FASTENER HOLDS IN CONCRETE The compression bond of the concrete to the power fastener accounts for the majority of the holding power. The fastener displaces the concrete which tries to return to its original form causing a squeezing effect. 482-64 Maximum holding power is achieved when the depth of penetration produces a bond on the power fastener equal to the strength of the concrete. As a general rule, pene- tration should be approximately 1" to 1 1/4" in
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Selecting Power Fasteners and Power Loads FASTENING INTO CONCRETE The proper power fastener length can be determined by adding the thickness of the material to be fastened and the amount of fastener that will actually penetrate the con- crete. The concrete must be three times as thick as the intended fastener penetration. In most cases, penetration 482-85 should be approximately 1" to 1 1/4" into the base concrete Wood or Non-Metals material. To Concrete FASTENING INTO STEEL The proper fastener
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Operation 1. Grasp barrel assembly and slide forward rapidly until it stops. Push barrel assembly back into tool to the closed position. This sets piston into firing position. 482-70 482-71 2. Insert power fastener into muzzle of tool, head end first. Push the fastener until point is even with end of tool. NOTE: Failure to start with the lowest power level can result in overdrive condition and will result in damage to tool (See page 13). 3. Select the proper power level of power load strips. Al
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Operation 5. Squeeze trigger to set power fastener. Be sure to keep pressure on tool during this operation. 6. Grasp base plate and slide barrel forward rapidly until it stops. Push base plate back into liner to the closed position. This advances the power load strip and resets the piston for the next fastening. WARNING: Do not depress muzzle of tool into barrel assembly when loading new power fastener. Live power load is in firing position. 30 WATER 7. Should the tool fail to fire, hold the muz
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Parts List Key Part No. No. Description Qty. 1 301002 Body 1 2 301034 Trigger Pin 1 3 301529 Advance Holder 1 4 301530 Advance Bar 1 5 301531 Advance Bar Spring 1 6 301533 Trigger 1 7 301015 Screw 2 8 301100 Liner 1 9 301014 Annular Spring 1 10 301013 Ball Bearing 1 11 301012 Stop 1 12 301016 Push Pin 1 13 301046 Ball Bearing 2 14 301047 Spring 2 15 301006 Piston Sleeve 1 16 301903 Piston Assembly (Includes Piston and Ring) 1 17 301208 Piston Ring 1 18 301010 Guide 1 19 301009 Base Plate 1 20 30
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30 32 27 26 28 31 29 25 24 12 21 4 1 23 5 2 6 22 3 14 9 11 15 13 10 8 7 17 16 18 19 20 Cleaning and Maintenance Clean tool after each days use. Disassemble and clean the barrel assembly with the wire brush provided with tool. Notice: Do not attempt to clean power load strip channel with wire brush. Apply good quality penetrating lubricant spray (such as WD-40) sparingly and wipe dry. 099494 17
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Tool Disassembly WARNING: Never disassemble, replace barrel, clean, or assemble a loaded powder actuated tool. REMOVING BARREL ASSEMBLY 1. Using screwdriver, lift end of annular spring and rotate spring until stop is uncovered (see Figure 1). Annular Spring Stop Figure 1 - Rotating Annular Spring 2. Using thumb, push stop towards rear of tool and remove (see Figure 2). Stop Figure 2 - Removing Stop 3. Pull barrel assembly out of liner in tool body. 4. Remove shear clip from barrel assembly (see
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6. Remove piston assembly from piston sleeve (see Figure 4). Piston Sleeve Piston Figure 4 - Removing Piston From Piston Sleeve 7. Tilt rear of base plate down. Guide will slide out. REMOVING RUBBER PAD 1. Loosen screw on back of rubber pad with 5mm Allen wrench. 2. Detach rubber pad from top of tool first, then pull entire rubber pad from tool. Rubber Pad Figure 5 - Removing Rubber Pad REMOVING ROCK ARM Rock arm assembly is located on rubber pad. 1. Push out rock arm pin (see Figure 6). 2. Remo
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REMOVING FIRING PIN 1. Remove plug from end of tool. Do this by pressing plug in and turning it 90°. This will release the plug from the tool body. 2. Remove the two springs within the cylinder at rear of tool body. Springs Plug Firing Pin and Sear Assembly Figure 7 - Removing Plug and Springs to Access Firing Pin 3. Use needle-nosed pliers to grasp nut at rear of firing pin assembly. Pull firing pin assembly and sear assembly from tool body. 4. Remove push pin from inside tool body. Do this by
