Parts List
Page 2
KIT 1 SWITCH KIT 1 BRUSH,CUTOFF 2 CORD/14'/16-2SJ 1 WASHER 1 FLANGE,INNER 1 SCREW 3 FLANGE 1 No Longer Available 1 GUARD SPRING 1 SCREW 4 SCREW & WASHER 4 COVER,GEAR CASE 1 No Longer Available 1 COVER,BRUSH 2 PROTECTOR,CORD 1 GEAR 1 SCREW 4 GEAR CASE ASSY. 1 HANDLE,SIDE 1 FLANGE 1 NUT 1 BUTTON,LOCK 1 SPRING 1 LOCK,SPINDLE 1 BEARING 1 COPYRIGHT© 2005. Page 1 Please visit www.dewaltservicenet.com for DW831 Type 1 Description Qty Required ARMATURE 1 FIELD UPGR. Item Number 101 102 103 104 105 106 107 108 109 110 111 112 112 113...
KIT 1 SWITCH KIT 1 BRUSH,CUTOFF 2 CORD/14'/16-2SJ 1 WASHER 1 FLANGE,INNER 1 SCREW 3 FLANGE 1 No Longer Available 1 GUARD SPRING 1 SCREW 4 SCREW & WASHER 4 COVER,GEAR CASE 1 No Longer Available 1 COVER,BRUSH 2 PROTECTOR,CORD 1 GEAR 1 SCREW 4 GEAR CASE ASSY. 1 HANDLE,SIDE 1 FLANGE 1 NUT 1 BUTTON,LOCK 1 SPRING 1 LOCK,SPINDLE 1 BEARING 1 COPYRIGHT© 2005. Page 1 Please visit www.dewaltservicenet.com for DW831 Type 1 Description Qty Required ARMATURE 1 FIELD UPGR. Item Number 101 102 103 104 105 106 107 108 109 110 111 112 112 113...
Parts List
Page 3
... 138 139 140 143 144 145 147 149 150 151 152 153 800 Part Number 930275-00 402856-00 605040-60 930753-00 402869-03 000000-00 605040-02...00 286436-00 Parts List for current parts information. Page 2 Parts list, pricing, and availability subject to change. Please visit www.dewaltservicenet.com for DW831 Type 1 Description Qty Required COVER,BEARING 1 BAFFLE 1 BEARING 1 WASHER 1 BRUSH & HOLDER 2 No Longer Available 1 BALL BEARING 1 HANDLE ASSY. 1 CLAMP,CORD 1 WRENCH 1 SCREW 5 FLANGE 1 SCREW 2 SCREW 4 SCREW 2 LEAD 2 RING,O 1 DEWALT NP-SHEET 1 IDENT....
... 138 139 140 143 144 145 147 149 150 151 152 153 800 Part Number 930275-00 402856-00 605040-60 930753-00 402869-03 000000-00 605040-02...00 286436-00 Parts List for current parts information. Page 2 Parts list, pricing, and availability subject to change. Please visit www.dewaltservicenet.com for DW831 Type 1 Description Qty Required COVER,BEARING 1 BAFFLE 1 BEARING 1 WASHER 1 BRUSH & HOLDER 2 No Longer Available 1 BALL BEARING 1 HANDLE ASSY. 1 CLAMP,CORD 1 WRENCH 1 SCREW 5 FLANGE 1 SCREW 2 SCREW 4 SCREW 2 LEAD 2 RING,O 1 DEWALT NP-SHEET 1 IDENT....
Instruction Manual
Page 3
...) protected supply. Please read the instruction manual. Read all safety warnings and all instructions. b) Do not operate power tools in explosive atmospheres, such as pipes, radiators, ranges and refrigerators. Distractions can cause you to rain or wet conditions. b) Avoid body contact with earthed (grounded) power tools. Keep cord away from heat, oil, sharp edges or moving parts. f) If operating a power tool in the presence of flammable...
...) protected supply. Please read the instruction manual. Read all safety warnings and all instructions. b) Do not operate power tools in explosive atmospheres, such as pipes, radiators, ranges and refrigerators. Distractions can cause you to rain or wet conditions. b) Avoid body contact with earthed (grounded) power tools. Keep cord away from heat, oil, sharp edges or moving parts. f) If operating a power tool in the presence of flammable...
Instruction Manual
Page 4
.... Power tools are doing and use the power tool if the switch does not turn it was designed. Do not use . This enables better control of starting . Such preventive safety measures reduce the risk of the power tool in a hazardous situation. 5) SERVICE a) Have your application. Use of the power tool for misalignment or binding of moving parts, breakage of parts and any adjustments, changing accessories, or storing power tools. Carrying power tools with sharp cutting edges are...
.... Power tools are doing and use the power tool if the switch does not turn it was designed. Do not use . This enables better control of starting . Such preventive safety measures reduce the risk of the power tool in a hazardous situation. 5) SERVICE a) Have your application. Use of the power tool for misalignment or binding of moving parts, breakage of parts and any adjustments, changing accessories, or storing power tools. Carrying power tools with sharp cutting edges are...
Instruction Manual
Page 5
... injury. If power tool or accessory is not recommended to follow all safety warnings, instructions, illustrations and specifications provided with this power tool. j) Hold the power tool by various operations. Cutting accessory contacting a "live" wire may make exposed metal parts of stopping small abrasive or workpiece fragments. Failure to be capable of your power tool, it does not assure safe operation. c) Do not use inspect the accessory such as a grinder, sander, wire brush or polisher...
... injury. If power tool or accessory is not recommended to follow all safety warnings, instructions, illustrations and specifications provided with this power tool. j) Hold the power tool by various operations. Cutting accessory contacting a "live" wire may make exposed metal parts of stopping small abrasive or workpiece fragments. Failure to be capable of your power tool, it does not assure safe operation. c) Do not use inspect the accessory such as a grinder, sander, wire brush or polisher...
Instruction Manual
Page 6
m) Do not run for one minute. r) Always use auxiliary handle, if provided, for maximum control over kickback or torque reaction during start the tool with a person in line with a new or replacement wheel, or a new or replacement wire brush installed, hold the tool in the direction opposite of the accessory's rotation at the point of tool misuse and/or incorrect operating procedures or conditions and can dig...
m) Do not run for one minute. r) Always use auxiliary handle, if provided, for maximum control over kickback or torque reaction during start the tool with a person in line with a new or replacement wheel, or a new or replacement wire brush installed, hold the tool in the direction opposite of the accessory's rotation at the point of tool misuse and/or incorrect operating procedures or conditions and can dig...
Instruction Manual
Page 7
... the tool in direction opposite to snag the rotating accessory and cause loss of wheel is not suitable for Wire Brushing Operations a) Be aware that could ignite clothing. Abrasive cut -off wheels are taken. Proper wheel flanges support the wheel thus reducing the possibility of a smaller tool and may kickback over your hand near the rotating accessory. Wheel intended for larger power tool is exposed towards the operator. Safety Warnings Specific...
... the tool in direction opposite to snag the rotating accessory and cause loss of wheel is not suitable for Wire Brushing Operations a) Be aware that could ignite clothing. Abrasive cut -off wheels are taken. Proper wheel flanges support the wheel thus reducing the possibility of a smaller tool and may kickback over your hand near the rotating accessory. Wheel intended for larger power tool is exposed towards the operator. Safety Warnings Specific...
Instruction Manual
Page 8
...guard. If in moving parts and should be worn by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of work and centrifugal forces. Everyday eyeglasses are within 50' (15.2 m) of the wire wheel or brush with ANSI Z87.1 MUST be avoided. Also use of this type of California to these exposures varies, depending on cord... use of power and overheating. When using more capacity than one extension to work . Minimum Gauge for Cord Sets Volts Total Length of Cord in loss of a guard is recommended for safety.
...guard. If in moving parts and should be worn by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of work and centrifugal forces. Everyday eyeglasses are within 50' (15.2 m) of the wire wheel or brush with ANSI Z87.1 MUST be avoided. Also use of this type of California to these exposures varies, depending on cord... use of power and overheating. When using more capacity than one extension to work . Minimum Gauge for Cord Sets Volts Total Length of Cord in loss of a guard is recommended for safety.
Instruction Manual
Page 9
...-down of the tool when shut off. Direct particles away from this tool can generate and/or disperse dust, which may promote absorption of use, noise from face and body. alternating (grounded) or direct Class II Construction current (double insulated) no no load speed .../min........... direct current current Class I Construction or AC/DC.... If grinding wheel or accessory loosens, it will...
...-down of the tool when shut off. Direct particles away from this tool can generate and/or disperse dust, which may promote absorption of use, noise from face and body. alternating (grounded) or direct Class II Construction current (double insulated) no no load speed .../min........... direct current current Class I Construction or AC/DC.... If grinding wheel or accessory loosens, it will...
Instruction Manual
Page 10
... personal injury could result. Spindle lock button wheel or accessory) ASSEMBLY AND ADJUSTMENTS WARNING: To reduce the risk of the DW840 is 5" (125 mm) diameter x 1/4" (6.35 mm) thick grinding wheels. D Attaching Side Handle (Fig. 2) The side handle (D) can cause injury. English SAVE THESE INSTRUCTIONS FOR FUTURE USE Motor Be sure your power supply agrees with grinder accessories. DeWALT tools are factory tested; An accidental start-up can be fitted...
... personal injury could result. Spindle lock button wheel or accessory) ASSEMBLY AND ADJUSTMENTS WARNING: To reduce the risk of the DW840 is 5" (125 mm) diameter x 1/4" (6.35 mm) thick grinding wheels. D Attaching Side Handle (Fig. 2) The side handle (D) can cause injury. English SAVE THESE INSTRUCTIONS FOR FUTURE USE Motor Be sure your power supply agrees with grinder accessories. DeWALT tools are factory tested; An accidental start-up can be fitted...
Instruction Manual
Page 11
... operate at start -up and during edge cutting by directing the open side of the guard must be limited to the work surface before adjusting or when making repairs. To run the tool, press the lock off button (B) and the On/Off switch (A). 2. Most Type 27 wheels are not designed for side pressures encountered with surface grinding. Wheel breakage and serious personal injury may cause wheel breakage. 5. Grinding Using...
... operate at start -up and during edge cutting by directing the open side of the guard must be limited to the work surface before adjusting or when making repairs. To run the tool, press the lock off button (B) and the On/Off switch (A). 2. Most Type 27 wheels are not designed for side pressures encountered with surface grinding. Wheel breakage and serious personal injury may cause wheel breakage. 5. Grinding Using...
Instruction Manual
Page 12
A Type 1 cut -off wheel guard is not available for these grinders. English 5" (125 mm) Grinding Wheels (DW831) Type 27 guard unthreaded backing flange Type 27 depressed center wheel threaded locking flange 7" (180 mm) Grinding Wheels (DW840) Type 27 guard backing flange Type 27 non-hubbed wheel clamp nut Type 27 guard Type 27 hubbed wheel Type 27 guard Type 27 hubbed wheel 10 CAUTION: Type 1 abrasive and diamond cut -off wheels may not be used on this tool.
A Type 1 cut -off wheel guard is not available for these grinders. English 5" (125 mm) Grinding Wheels (DW831) Type 27 guard unthreaded backing flange Type 27 depressed center wheel threaded locking flange 7" (180 mm) Grinding Wheels (DW840) Type 27 guard backing flange Type 27 non-hubbed wheel clamp nut Type 27 guard Type 27 hubbed wheel Type 27 guard Type 27 hubbed wheel 10 CAUTION: Type 1 abrasive and diamond cut -off wheels may not be used on this tool.
Instruction Manual
Page 13
.... Operators and others in use. A Type 1 cut -off wheel guard is not available for these grinders. 11 Strands of wire may not be used on this tool. Wire Wheels Sanding Flap Discs Sanding Discs (DW831) English Type 27 guard Type 27 guard Type 27 guard rubber backing pad 3" (76.2 mm) wire cup brush unthreaded backing flange hubbed sanding flap disc sanding disc Type 27 guard non-hubbed sanding flap disc threaded locking flange threaded clamp nut WARNING: DW840 cannot be used with conventional sanding...
.... Operators and others in use. A Type 1 cut -off wheel guard is not available for these grinders. 11 Strands of wire may not be used on this tool. Wire Wheels Sanding Flap Discs Sanding Discs (DW831) English Type 27 guard Type 27 guard Type 27 guard rubber backing pad 3" (76.2 mm) wire cup brush unthreaded backing flange hubbed sanding flap disc sanding disc Type 27 guard non-hubbed sanding flap disc threaded locking flange threaded clamp nut WARNING: DW840 cannot be used with conventional sanding...
Instruction Manual
Page 14
... procedures. Fitting and Removing the Guard (DW831) (Fig. 6, 7) CAUTION: Unplug the tool before being done until all persons entering the work area to reduce tracking of lead poisoning is completed. 2. If only the outer edge of dust generated. 2. Articles of along with all grinding wheels and sanding flap discs, wire brushes and wire wheels. Plastic drop cloths should be used by all clean up...
... procedures. Fitting and Removing the Guard (DW831) (Fig. 6, 7) CAUTION: Unplug the tool before being done until all persons entering the work area to reduce tracking of lead poisoning is completed. 2. If only the outer edge of dust generated. 2. Articles of along with all grinding wheels and sanding flap discs, wire brushes and wire wheels. Plastic drop cloths should be used by all clean up...
Instruction Manual
Page 15
... guard on a table, spindle up until the arrows are aligned. (Fig. 7). 4. REMOVING GUARD 1. Pull the guard up . 2. Undetectable damage to ensure that the tool is off . Guards must be used with a loose guard or the guard latch in the closed position tighten or loose n the adjustment screw (G). FITTING GUARD CAUTION: Do not operate grinder with all grinding wheels and sanding flap discs, wire brushes and wire wheels. Place the angle grinder on gear case (Fig. 7). Tighten the screw...
... guard on a table, spindle up until the arrows are aligned. (Fig. 7). 4. REMOVING GUARD 1. Pull the guard up . 2. Undetectable damage to ensure that the tool is off . Guards must be used with a loose guard or the guard latch in the closed position tighten or loose n the adjustment screw (G). FITTING GUARD CAUTION: Do not operate grinder with all grinding wheels and sanding flap discs, wire brushes and wire wheels. Place the angle grinder on gear case (Fig. 7). Tighten the screw...
Instruction Manual
Page 16
... spindle locks, preventing the spindle from power source before installing and removing accessories, before adjusting or when making repairs. CAUTION: Wear work gloves when handling wire cup brushes. English CAUTION: Do not tighten adjusting screw with the supplied spanner wrench (Fig. 12). Wheels where surface grinding is required when using wire brushes or wheels. CAUTION: Proper guard must be used for surface grinding or only edge grinding/cutting. Screw the threaded flange onto the spindle (Fig. 10). 4. A Type 27 guard...
... spindle locks, preventing the spindle from power source before installing and removing accessories, before adjusting or when making repairs. CAUTION: Wear work gloves when handling wire cup brushes. English CAUTION: Do not tighten adjusting screw with the supplied spanner wrench (Fig. 12). Wheels where surface grinding is required when using wire brushes or wheels. CAUTION: Proper guard must be used for surface grinding or only edge grinding/cutting. Screw the threaded flange onto the spindle (Fig. 10). 4. A Type 27 guard...
Instruction Manual
Page 17
...; FOR YOUR SAFETY: Registering your DeWALT Power Tool, Laser, or Nailer for free, any accessory, please contact DeWALT Industrial Tool Co., 701 East Joppa Road, Baltimore, MD 21286, call 1-800-4-DeWALT (1-800433-9258). WARNING: Never use identical replacement parts. Never let any reason, you are available at extra cost from the date of purchase. Repairs To assure product SAFETY and RELIABILITY, repairs, maintenance and adjustment (including brush inspection and replacement) should...
...; FOR YOUR SAFETY: Registering your DeWALT Power Tool, Laser, or Nailer for free, any accessory, please contact DeWALT Industrial Tool Co., 701 East Joppa Road, Baltimore, MD 21286, call 1-800-4-DeWALT (1-800433-9258). WARNING: Never use identical replacement parts. Never let any reason, you are available at extra cost from the date of purchase. Repairs To assure product SAFETY and RELIABILITY, repairs, maintenance and adjustment (including brush inspection and replacement) should...
Instruction Manual
Page 18
For products sold in the packaging, call 1-800-4-DeWALT (1-800-4339258) for warranty information. English LATIN AMERICA: This warranty does not apply to products sold in Latin America, see country specific warranty information contained in Latin America. FREE WARNING LABEL REPLACEMENT: If your warning labels become illegible or are missing, call the local company or see website for a free replacement. 16
For products sold in the packaging, call 1-800-4-DeWALT (1-800-4339258) for warranty information. English LATIN AMERICA: This warranty does not apply to products sold in Latin America, see country specific warranty information contained in Latin America. FREE WARNING LABEL REPLACEMENT: If your warning labels become illegible or are missing, call the local company or see website for a free replacement. 16
Instruction Manual
Page 56
DeWALT Industrial Tool Co., 701 East Joppa Road, Towson, MD 21286 (JUN16) Part No. N481378 DW831, DW840 Copyright © 2012, 2014, 2016 DeWALT The following are trademarks for one or more DeWALT power tools: the yellow and black color scheme, the "D" shaped air intake grill, the array of pyramids on the handgrip, the kit box configuration, and the array of lozenge-shaped humps on the surface of the tool.
DeWALT Industrial Tool Co., 701 East Joppa Road, Towson, MD 21286 (JUN16) Part No. N481378 DW831, DW840 Copyright © 2012, 2014, 2016 DeWALT The following are trademarks for one or more DeWALT power tools: the yellow and black color scheme, the "D" shaped air intake grill, the array of pyramids on the handgrip, the kit box configuration, and the array of lozenge-shaped humps on the surface of the tool.
