REMINGTON ® Powerdriver NDENT LAB OR PE DE ST ® I FO R P U B LI C ™ Y TE NG FE T AN Y OR AT IN Model 491 SA POWDER ACTUATED TOOL MANUFACTURERS´ INSTITUTE INC. G 029 G 028 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.
INDEX Warning: Safety Precautions ............................................................. 3-11 Why A Fastener Holds ......................................................................... 12 Selecting Fasteners and Power Loads ................................................ 13 Operation ............................................................................................. 14 Parts List ..............................................................................................
Warning: Safety Precautions IMPORTANT: Read these operating instructions carefully and completely 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 operators.
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.
Safety Precautions POWD LOAD POWDER LOADS 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.
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 PUNCH TEST TOO SOFT 482-28 482-27 482-26 Start Point flattens GREEN POWER LEVEL 3 Surface shatters YELLOW POWER LEVEL 4 TOO HARD 1.
Safety Precautions CAST IRON GLASS TILE BRICK 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.
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 7. TOO THIN 3/16" MIN 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 8.
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.
Safety Precautions Start 22 27 CALIBER GREEN POWER LEVEL 3 YELLOW POWER LEVEL 4 5 4 3 2 7 1 1 RED POWER LEVEL 5 8 9 10 11 12 NICKEL BRASS 6 482-54 NOTE: Failure to start with the lowest power level can result in overdrive condition and will result in damage to tool (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.
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 Plastic Flute 482-60 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.
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. 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, penetration should be approximately 1" to 1 1/4" into the base concrete.
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 concrete. The concrete must be three times as thick as the intended fastener penetration. In most cases, penetration should be approximately 1" to 1 1/4" into the base concrete material.
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 2. 482-71 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.
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.
Parts List Key No. Part No.
30 27 32 26 28 31 29 25 24 12 21 4 1 23 5 2 6 22 9 3 14 11 10 15 13 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.
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.
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.
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. Plug Firing Pin and Sear Assembly Springs 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.
Tool Assembly ATTACHING LINER TO TOOL BODY 1. Replace two ball bearings and springs into end of liner (see Figure 9, page 20). 2. Slide tool body onto liner. 3. Insert two screws into front of tool body just under liner. Tighten screws firmly. ATTACHING TRIGGER ASSEMBLY TO TOOL BODY 1. Insert trigger assembly into tool body at rear of body (see Figure 8, page 20). 2. Replace trigger pin. Do this by inserting trigger pin through tool body and trigger assembly.
ATTACHING RUBBER PAD 1. Slip top of rubber pad over plug at rear of tool body (see Figure 5, page 19). 2. Press rubber pad into place. 3. Tighten screw on back of rubber pad with 5mm Allen wrench. ASSEMBLING BARREL ASSEMBLY 1. Insert guide into rear of base plate (see Figure 11). Base Plate Guide Figure 11 - Inserting Guide Into Base Plate 2. Insert piston into piston sleeve. Push piston to end of piston sleeve (see Figure 12). Piston Sleeve Piston Figure 12 - Inserting Piston Into Piston Sleeve 3.
Troubleshooting Guide PROBLEM POSSIBLE CAUSE REMEDY Piston hangs out of muzzle. Tool overdriven. Tap piston on hard surface until piston is pushed back into the guide. (See “Overdriven Fastener” below) Piston not properly assembled in relation to barrel stop. Remove barrel assembly (see pages 18-22). Replace all damaged or missing parts. Broken piston or piston ring. Replace piston or piston ring or take tool to your distributor. Overdriven fastener. Excessive power.
Fasteners 482-79 482-78 SP FASTENERS 482-80 Wood or Non-Metals To Steel Wood or Non-Metals To Concrete Fasten wood or nonmetals to concrete or steel. Application Chart Power load and power fastener application information.
Application Chart IMPORTANT • Recommended for use with Remington power load strips and power fasteners. • Only use power fasteners up to 2 1/2" long with standard guide. Power fasteners 3" long can be used with optional guide, part number 301110. • If power fastener goes below the top surface of the board, use penetrating control disc (* see illustration below). • Always wear approved eye and ear protection. * Use power fastener with penetration control disc, part number 015549.
Parts Central Contact authorized dealers of this product. If they can’t supply original replacement part(s), either contact your nearest Parts Central (see below) or call DESA International’s Parts Department at 1-800-972-7879. In Canada call 1-905-826-8010.
Maintenance Log Date 099494 Maintenance Performed 27
Limited Warranty Agreement DESA International warrants the Remington Powerdriver Model 491 against defects in materials and workmanship for a period of one (1) year from the date of purchase. If within one (1) year from the purchase date this Powder Actuated Tool fails due to a defect in material or workmanship, DESA will repair or replace the tool at DESA’s option. To obtain service under this warranty, contact DESA at the number/address listed below.
