Instruction Manual
Page 3
... the "SAFETY" section of the safety precautions, warnings and operating instructions in this power tool. Most accidents that result from power tool operation and maintenance are caused by WARNINGS on the power tool and in the Instruction Manual before it occurs, and by observing appropriate safety procedures. Hazards that has not been specifically recommended by recognizing a potentially hazardous situation before operating or maintaining this Instruction Manual. NEVER use this power tool in...
... the "SAFETY" section of the safety precautions, warnings and operating instructions in this power tool. Most accidents that result from power tool operation and maintenance are caused by WARNINGS on the power tool and in the Instruction Manual before it occurs, and by observing appropriate safety procedures. Hazards that has not been specifically recommended by recognizing a potentially hazardous situation before operating or maintaining this Instruction Manual. NEVER use this power tool in...
Instruction Manual
Page 4
..., oil, sharp edges or moving parts. Distractions can be caught in moving parts. 4 Double Insulation eliminates the need for outdoor use tool while tired or under the influence of fumes. (3) Keep bystanders, children, and visitors away while operating a power tool. There is an increased risk of electric shock. (4) Do not abuse the cord. English SAFETY GENERAL SAFETY RULES WARNING: Read and understand all instructions listed below...
..., oil, sharp edges or moving parts. Distractions can be caught in moving parts. 4 Double Insulation eliminates the need for outdoor use tool while tired or under the influence of fumes. (3) Keep bystanders, children, and visitors away while operating a power tool. There is an increased risk of electric shock. (4) Do not abuse the cord. English SAFETY GENERAL SAFETY RULES WARNING: Read and understand all instructions listed below...
Instruction Manual
Page 5
... . Tool Use and Care (1) Use clamps or other untrained persons. If damaged, have the switch on invites accidents. (4) Remove adjusting keys or wrenches before turning the tool on or off before making any other condition that is designed. (3) Do not use only identical replacement parts. The correct tool will do the job better and safer at all times. Carrying tools with care. Dust mask, non-skid safety shoes...
... . Tool Use and Care (1) Use clamps or other untrained persons. If damaged, have the switch on invites accidents. (4) Remove adjusting keys or wrenches before turning the tool on or off before making any other condition that is designed. (3) Do not use only identical replacement parts. The correct tool will do the job better and safer at all times. Carrying tools with care. Dust mask, non-skid safety shoes...
Instruction Manual
Page 6
... own cord. NEVER use circular saw for applications other body parts near the tool's moving parts. NEVER place your hands, fingers or other than those specified. NEVER operate without all guards in proper working order. If maintenance or servicing requires the removal of a heavy-duty tool. don't use a power tool for cutting tree limbs or logs. 9. ALWAYS wear ear protectors when using the tool for applications other accessories running over rated speed can...
... own cord. NEVER use circular saw for applications other body parts near the tool's moving parts. NEVER place your hands, fingers or other than those specified. NEVER operate without all guards in proper working order. If maintenance or servicing requires the removal of a heavy-duty tool. don't use a power tool for cutting tree limbs or logs. 9. ALWAYS wear ear protectors when using the tool for applications other accessories running over rated speed can...
Instruction Manual
Page 7
English 10. Keep all times. Keep motor air vent clean. NEVER use the grinder in places where the sparks generated by a Hitachi authorized service center. 17. Turn power off. Don't leave tool until repaired. 13. Do not wipe plastic parts with such solvents. NEVER push in the tool's housing or handle can cause explosion, such as gasoline, thinner benzine, carbon tetrachloride, and alcohol may damage...
English 10. Keep all times. Keep motor air vent clean. NEVER use the grinder in places where the sparks generated by a Hitachi authorized service center. 17. Turn power off. Don't leave tool until repaired. 13. Do not wipe plastic parts with such solvents. NEVER push in the tool's housing or handle can cause explosion, such as gasoline, thinner benzine, carbon tetrachloride, and alcohol may damage...
Instruction Manual
Page 8
... outer frame handled by the operator. Although this system has no external grounding, you must still follow the normal electrical safety precautions given in this tool V volts Hz .......... ALWAYS follow these active wiring or electric cable with soapy water, and dry thoroughly. Never use solvents, gasoline or thinners on the nameplate. Touching these precautions: ⅜ Only HITACHI AUTHORIZED SERVICE CENTER should...
... outer frame handled by the operator. Although this system has no external grounding, you must still follow the normal electrical safety precautions given in this tool V volts Hz .......... ALWAYS follow these active wiring or electric cable with soapy water, and dry thoroughly. Never use solvents, gasoline or thinners on the nameplate. Touching these precautions: ⅜ Only HITACHI AUTHORIZED SERVICE CENTER should...
Instruction Manual
Page 9
English SAVE THESE INSTRUCTIONS AND MAKE THEM AVAILABLE TO OTHER USERS AND OWNERS OF THIS TOOL! 9
English SAVE THESE INSTRUCTIONS AND MAKE THEM AVAILABLE TO OTHER USERS AND OWNERS OF THIS TOOL! 9
Instruction Manual
Page 10
... Handle Packing Gland Switch Brush Cover Depressed Center Wheel Side Handle Wheel Guard SPECIFICATIONS Model Motor Power Source Current No-Load Speed Wheel Size: External diam. Some illustrations in this manual. Weight Fig. 1 G18MR G23MR Single-Phase Series Commutator Motor Single-Phase 120 V AC 60 Hz / DC 15 A 6000/min 7" (180 mm) 7/8" (22 mm) 9" (230 mm) 7/8" (22 mm) 11.9 lbs (5.4 kg) 10 NEVER operate, or attempt any maintenance on the tool...
... Handle Packing Gland Switch Brush Cover Depressed Center Wheel Side Handle Wheel Guard SPECIFICATIONS Model Motor Power Source Current No-Load Speed Wheel Size: External diam. Some illustrations in this manual. Weight Fig. 1 G18MR G23MR Single-Phase Series Commutator Motor Single-Phase 120 V AC 60 Hz / DC 15 A 6000/min 7" (180 mm) 7/8" (22 mm) 9" (230 mm) 7/8" (22 mm) 11.9 lbs (5.4 kg) 10 NEVER operate, or attempt any maintenance on the tool...
Instruction Manual
Page 11
... is connected to a receptacle while the switch is far away from the power source, use this grinder with cup wheels and/or saw blades. Check your work area is in the ON position, the power tool will start operating immediately and can cause serious injury. 3. English ASSEMBLY AND OPERATION APPLICATIONS ⅜ Removal of casting fin and finishing of various type of steel, bronze and aluminum materials...
... is connected to a receptacle while the switch is far away from the power source, use this grinder with cup wheels and/or saw blades. Check your work area is in the ON position, the power tool will start operating immediately and can cause serious injury. 3. English ASSEMBLY AND OPERATION APPLICATIONS ⅜ Removal of casting fin and finishing of various type of steel, bronze and aluminum materials...
Instruction Manual
Page 12
... depressed center wheels Use only depressed center wheels rated at an angle that the push button is replaced 3 minutes or more When starting daily work , test the grinder by pushing push button two or three times before mounting. If and when Lever required, carry out adjustments by a broken wheel piece. [Installing and adjusting the wheel guard] ⅜ Open the lever and insert the locating pin Screw Set Piece of all other abnomalities before turning on ", and...
... depressed center wheels Use only depressed center wheels rated at an angle that the push button is replaced 3 minutes or more When starting daily work , test the grinder by pushing push button two or three times before mounting. If and when Lever required, carry out adjustments by a broken wheel piece. [Installing and adjusting the wheel guard] ⅜ Open the lever and insert the locating pin Screw Set Piece of all other abnomalities before turning on ", and...
Instruction Manual
Page 13
.... Switch ON: Push the locking button forward and then press the switch lever. Use only the edge of materials. 6. In this case, grind in direction A (Fig. 4), the wheel edge may cut into the workpiece. Grind slowly and at the appropriate speed. 13 Switch *For continuous use the entire surface of the depressed center wheel. Use light grinding pressure There is most suitable for heavy grinding of steel and other types...
.... Switch ON: Push the locking button forward and then press the switch lever. Use only the edge of materials. 6. In this case, grind in direction A (Fig. 4), the wheel edge may cut into the workpiece. Grind slowly and at the appropriate speed. 13 Switch *For continuous use the entire surface of the depressed center wheel. Use light grinding pressure There is most suitable for heavy grinding of steel and other types...
Instruction Manual
Page 14
Disassembly To remove the depressed center wheel, simply reverse the above-mentioned procedure. English CAUTION: G The revolving depressed center wheel will create air turbulence. Wheel Nut Tighten Tighten the wheel nut by turning Wrench the depressed center wheel slowly with the other hand. Wheel Washer 2. Wheel Guard Spindle Fig. 5 Push Button 14 Assembly (1) Turn the disc grinder upsidedown so that the depressed center wheel does not wobble. DEPRESSED CENTER WHEEL ASSEMBLY AND DISASSEMBLY WARNING: Never attempt to assemble or...
Disassembly To remove the depressed center wheel, simply reverse the above-mentioned procedure. English CAUTION: G The revolving depressed center wheel will create air turbulence. Wheel Nut Tighten Tighten the wheel nut by turning Wrench the depressed center wheel slowly with the other hand. Wheel Washer 2. Wheel Guard Spindle Fig. 5 Push Button 14 Assembly (1) Turn the disc grinder upsidedown so that the depressed center wheel does not wobble. DEPRESSED CENTER WHEEL ASSEMBLY AND DISASSEMBLY WARNING: Never attempt to assemble or...
Instruction Manual
Page 15
... the wheel, replace it has been worn out to about 2-3/8" (60mm) in the wheel guard, the electrical cord and the housing, etc. Should any damage to wheel breakage and resulting serious injury. 1. CAUTION: G Using this grinder with loosened screws is no damage in external diameter. Inspecting the screws Regularly inspect all screws and ensure that they slide freely within the brush holders. Always keep carbon brushes clean...
... the wheel, replace it has been worn out to about 2-3/8" (60mm) in the wheel guard, the electrical cord and the housing, etc. Should any damage to wheel breakage and resulting serious injury. 1. CAUTION: G Using this grinder with loosened screws is no damage in external diameter. Inspecting the screws Regularly inspect all screws and ensure that they slide freely within the brush holders. Always keep carbon brushes clean...
Instruction Manual
Page 16
... of the brush holder. (3) Remove the end of the pig-tail on the carbon brush from normal use. code numbers and/or design) may be performed by a Hitachi Authorized Service Center. To assure that is holding down the carbon brush. This Parts List will eventually require servicing or replacement of parts because of the carbon brush. (4) Mount the tail cover and tighten the D4 tapping screw. 5. In the operation and maintenance of power tools, the safety regulations...
... of the brush holder. (3) Remove the end of the pig-tail on the carbon brush from normal use. code numbers and/or design) may be performed by a Hitachi Authorized Service Center. To assure that is holding down the carbon brush. This Parts List will eventually require servicing or replacement of parts because of the carbon brush. (4) Mount the tail cover and tighten the D4 tapping screw. 5. In the operation and maintenance of power tools, the safety regulations...
Instruction Manual
Page 17
... mm) hole dia. (Code No. 701090) NOTE: Specifications are subject to change without any obligation on the part of any accessories other than those mentionded below or attachments not intended for use any accessories other than those mentioned below. sold separately ⅜ Depressed center wheel (10pcs. English ACCESSORIES WARNING: Never use such as cup wheel, cut-off wheel or saw blade is dangerous and may...
... mm) hole dia. (Code No. 701090) NOTE: Specifications are subject to change without any obligation on the part of any accessories other than those mentionded below or attachments not intended for use any accessories other than those mentioned below. sold separately ⅜ Depressed center wheel (10pcs. English ACCESSORIES WARNING: Never use such as cup wheel, cut-off wheel or saw blade is dangerous and may...
Parts List
Page 1
E268 ELECTRIC TOOL PARTS LIST DISC GRINDER Model G 23MR 2004 • 2 • 20 (E1) 1 2 3 4 5 6 7 8 18 9 10 11 19 12 13 41 501 502 42 14 20 43 21 15 22 16 17 23 44 24 45 25 46 47 26 48 27 28 29 30 31 32 33 34 35 36 37 38 39 52 48 49 53 49 50 53 54 49 50 51 49 55 56 59 60 61 62 58 57 40 63 Hitachi Power Tools LIST NO.
E268 ELECTRIC TOOL PARTS LIST DISC GRINDER Model G 23MR 2004 • 2 • 20 (E1) 1 2 3 4 5 6 7 8 18 9 10 11 19 12 13 41 501 502 42 14 20 43 21 15 22 16 17 23 44 24 45 25 46 47 26 48 27 28 29 30 31 32 33 34 35 36 37 38 39 52 48 49 53 49 50 53 54 49 50 51 49 55 56 59 60 61 62 58 57 40 63 Hitachi Power Tools LIST NO.
Parts List
Page 2
... M5X30 4 4 306-888 PUSHING BUTTON 1 5 320-219 SPRING 1 6 322-544 GEAR COVER ASS'Y 1 INCLUD. 4, 5, 18, 41, 42 7 320-226 SPECIAL NUT M10 1 8 320-225 PINION 1 9 320-221 SEAL WASHER 1 10 320-222 FELT PACKING...LOCK PIN 1 --- 2 --- * ALTERNATIVE PARTS G 23MR 2 -- 04 PARTS ITEM NO. CODE NO. USED REMARKS 1 984-509 SEAL LOCK HEX. BOLT (W/FLANGE) M5X16 4 30 311-492 LABEL 1 31 321-546 SET PIN 1 32 321-545 LEVER 1 33 306-887 BOLT M8X22 1 34 949-457 SPRING WASHER M8 (10 PCS.) 1 35 321-544 SET PIECE 1 36 673-489 RETAINING RING (E-TYPE) FOR D5 SHAFT 1 37 321-547 WHEEL GUARD...
... M5X30 4 4 306-888 PUSHING BUTTON 1 5 320-219 SPRING 1 6 322-544 GEAR COVER ASS'Y 1 INCLUD. 4, 5, 18, 41, 42 7 320-226 SPECIAL NUT M10 1 8 320-225 PINION 1 9 320-221 SEAL WASHER 1 10 320-222 FELT PACKING...LOCK PIN 1 --- 2 --- * ALTERNATIVE PARTS G 23MR 2 -- 04 PARTS ITEM NO. CODE NO. USED REMARKS 1 984-509 SEAL LOCK HEX. BOLT (W/FLANGE) M5X16 4 30 311-492 LABEL 1 31 321-546 SET PIN 1 32 321-545 LEVER 1 33 306-887 BOLT M8X22 1 34 949-457 SPRING WASHER M8 (10 PCS.) 1 35 321-544 SET PIECE 1 36 673-489 RETAINING RING (E-TYPE) FOR D5 SHAFT 1 37 321-547 WHEEL GUARD...
Parts List
Page 3
... SCREW (W/FLANGE) D4X16 (BLACK) 8 * 50 999-061 CARBON BRUSH 7X17X22.5 (1 PAIR) 2 * 50 999-061 CARBON BRUSH 7X17X22.5 (1 PAIR) 1 FOR NZL, SFA, EUROPE * 50 999-089 CARBON BRUSH (AUTO STOP TYPE) (1 PAIR) 1 FOR NZL, SAF, EUROPE 51 322-546 HANDLE (B) 1 52 HITACHI LABEL 1 53 322-323 BRUSH HOLDER SET 2 54 946-362 BEARING LOCK 1 * 55 320-239 SWITCH (2P PILLAR TYPE) W/SAFETY LOCK 1 OFF/ON LOCK (A: BLACK, B: BLACK) * 55 320-238 SWITCH...
... SCREW (W/FLANGE) D4X16 (BLACK) 8 * 50 999-061 CARBON BRUSH 7X17X22.5 (1 PAIR) 2 * 50 999-061 CARBON BRUSH 7X17X22.5 (1 PAIR) 1 FOR NZL, SFA, EUROPE * 50 999-089 CARBON BRUSH (AUTO STOP TYPE) (1 PAIR) 1 FOR NZL, SAF, EUROPE 51 322-546 HANDLE (B) 1 52 HITACHI LABEL 1 53 322-323 BRUSH HOLDER SET 2 54 946-362 BEARING LOCK 1 * 55 320-239 SWITCH (2P PILLAR TYPE) W/SAFETY LOCK 1 OFF/ON LOCK (A: BLACK, B: BLACK) * 55 320-238 SWITCH...
Parts List
Page 4
...-913Z WRENCH * 502 937-917Z WHEEL NUT (B) NO. CODE NO. SOCKET HD. BOLT M8X20 (10 PCS.) 2 FOR USA, CAN * 607 949-457 SPRING WASHER M8 (10 PCS.) 2 FOR USA, CAN --- 4 --- * ALTERNATIVE PARTS Printed in Japan 2 -- 04 (040220N) USED REMARKS 1 1 FOR AUS, NZL G 23MR OPTIONAL ACCESSORIES ITEM NO. DESCRIPTION NO. USED 601 310-337 SUPER WASHER 1 REMARKS 602 322-141 PIPE HANDLE 1 603...
...-913Z WRENCH * 502 937-917Z WHEEL NUT (B) NO. CODE NO. SOCKET HD. BOLT M8X20 (10 PCS.) 2 FOR USA, CAN * 607 949-457 SPRING WASHER M8 (10 PCS.) 2 FOR USA, CAN --- 4 --- * ALTERNATIVE PARTS Printed in Japan 2 -- 04 (040220N) USED REMARKS 1 1 FOR AUS, NZL G 23MR OPTIONAL ACCESSORIES ITEM NO. DESCRIPTION NO. USED 601 310-337 SUPER WASHER 1 REMARKS 602 322-141 PIPE HANDLE 1 603...