Hitachi H 45MR, Technical Data And Service Manual

Page 1: ...POWER TOOLS TECHNICAL DATA AND SERVICE MANUAL HAMMER H 45MR SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT LIST No E463 MAY 2002 H MODEL H 45MR ...

Page 2: ... AND SERVICE MANUAL a symbol s is are used in the place of company name s and model name s of our competitor s The symbol s utilized here is are as follows Symbols Utilized Competitors Company Name Model Name MAKITA HM1100C C BOSCH GSH5E B ...

Page 3: ...S IN SALES PROMOTION 8 7 1 Handling Instructions 8 7 2 Caution Plate 8 7 3 Grease Replacement 8 7 4 O Ring Replacement 9 8 REFERENCE INFORMATION 9 8 1 Striking Operation 9 8 2 Idling Proof Mechanism 10 8 3 Shock Absorbing Mechanism 10 8 4 Sealed and Dustproof Construction 11 8 5 Vibration Absorbing Construction 11 8 6 Tool Retainer 12 8 7 Adjusting Mechanism for the Tool Swivel Angle 12 8 8 Side H...

Page 4: ...Soft touch grip for easier handling 7 Simply turning method variable lock mechanism for easy working angle adjustment of chisels etc 8 A very original design 3 APPLICATIONS Demolishing and chiseling of concrete Edging gravel road digging compacting and tamping grooving cutting stripping and roughing etc 4 SELLING POINTS Hitachi original design vibration absorbing handle for excellent vibration red...

Page 5: ...results in prolonged service life and comfortable operation Conventional mechanism for prevention of idle hammering is to open and close the air holes according to the movement of the striker The Model H 45MR has air holes located at the position unaffected by the rebound of the striker at no load The air holes are opened and closed by the movement of sleeve A provided around the cylinder that int...

Page 6: ...gh the rolling and compression of four cylindrical rubber cushions on inclined surfaces The spring constant factor is as low as that of the Models H 45SB2 H 41SC H 45SR H 60KA H 60MA and H 60MB and the cushioning structure greatly reduces vibration Full load current Power input Striking speed Power source Voltage Motor type Insulation structure 5 SPECIFICATIONS Single phase AC 50 60 Hz 110 V 120 V...

Page 7: ...sphalt cutting etc 1 Cutter SDS max shank type 4 Digging substitute pick ax Code No 313476 Overall length 400 mm 15 3 4 1 Scoop SDS max shank type 1 Demolition work Code No 313473 313474 Overall length 280 mm 11 1 32 400 mm 15 3 4 Code No 313471 313472 Overall length 280 mm 11 1 32 400 mm 15 3 4 Overall length 400 mm 15 3 4 Width 50 mm 2 Code No 313475 ...

Page 8: ... 500 g 1 1 lbs Can 30 g 1 oz Tube 70 g 2 5 oz Tube Code No 981840 Code No 308471 Code No 980927 5 Roughing surface work 1 Bushing tool 2 Shank SDS max shank type 6 Tamping work Code No 313477 Overall length 220 mm 8 21 32 Code No 313479 1 Rammer 2 Shank SDS max shank type Code No 313478 Overall length 220 mm 8 21 32 Code No 313479 150 mm x 150 mm ...

Page 9: ...lished amount may vary in accordance with operating conditions operator skill etc 80 Demolished amount kg 30 min 60 40 20 At rated voltage 70 53 81 Demolished weight for 30 min kg 0 54 H 45MR H 45MA C B For Europe Australia U S A C B For Asia etc 1 050 Insulation structure Length Height Width mm mm Double insulation Double insulation Double insulation 5 9 13 0 lbs 454 17 7 8 3 000 12 5 119 0 95 9 ...

Page 10: ...h shown in Fig 3 illustrates the relationship between ratio of quantity of working tool penetration and ratio of quantity of body jumping The quantity of body jumping is less than the similar products and the working tool quickly penetrates into the workpiece Pressing force 100N Fig 3 Ratio of quantity of working tool penetration Ratio of quantity of body jumping Z HITACHI H 45MR HITACHI H 45MA B ...

Page 11: ...idance to the customer during sales promotion 7 2 Caution Plate The Model H 45MR unit is provided with a Caution Plate illustrated below which lists basic safety precautions in use Carefully ensure that the customer fully understands and follows these precautions before using the tool For Australia For the U S A and Canada 7 3 Grease Replacement The striking portion and the speed reduction portion...

Page 12: ...ond hammer O rings Crank cover 8 1 Striking Operation The rotation of the armature is transferred to the crank shaft and connecting rod which in turn cause the piston to reciprocate inside the cylinder As the piston reciprocates the changing air pressure inside the air chamber between the piston and the striker causes the striker to continuously strike against the end of the second hammer At the s...

Page 13: ... the piston continues to reciprocate thereby preventing striking operation Second hammer Striker Sleeve A Spring C Air hole Forward movement of second hammer striker Air chamber 8 3 Shock Absorbing Mechanism At the instance of releasing the bull point from the concrete by moving the main body up the second hammer contacts hammer holder A then the cushion damper A provided between hammer holder A a...

Page 14: ...cylinder crank case and housing and the handle are connected through four cylindrical rubbers handle dampers Vibration is absorbed by the rolling and compression of the four rubbers on inclined surfaces Because the vibration absorbing unit has non linear spring characteristics its spring constant factor is lower than that of the conventional shearing rubber type vibration absorbing construction an...

Page 15: ...ap A Fig 10 8 8 Side Handle The side handle can be adjusted by 360 rotation and also allows operation from front to rear Loosen the handle by turning the grip in direction and adjust the handle to a convenient position Turn the grip in direction to fix the side handle Fig 11 Grip Grip A Grip B Fig 11 A B A C B 8 7 Adjusting Mechanism for the Tool Swivel Angle The tool swivel angle can be easily ch...

Page 16: ...taining Ring D42 7 by means of a snap ring remover then the Ball Holder 8 Grip B 9 and the four Steel Balls D6 35 11 can be removed from the Front Cover 13 Furthermore remove the Retaining Ring D42 7 by means of a snap ring remover then Grip C 10 can be removed from the Front Cover 13 Fig 13 Piston and striker disassembly Remove the Seal Lock Hex Socket Hd Bolts M6 x 25 12 fixing the Front Cover 1...

Page 17: ...ng Cover A First Gear Workbench 9 1 2 Reassembly Reassembly can be accomplished by following the disassembly procedure in reverse However special attention should be given to the following items First gear and crank shaft reassembly Press fit the Ball Bearing 6203DDCMPS2L 46 in the Cylinder Crank Case 48 and fix Bearing Cover A 45 with the two Seal Lock Hex Socket Flat Hd Bolts M5 x 12 44 Press fi...

Page 18: ...ert the Cylinder 31 into the Cylinder Crank Case 48 Cylinder Fig 17 Cylinder crank case Crank pin portion Piston Crank shaft Lubrication Apply special grease grease for electric impact drills to the inner circumference of the Connecting Rod 34 the O rings 27 in the Striker 26 and in the Piston 33 the outer circumference of the Retainer Sleeve 16 the sliding portion of the Second Hammer 20 the Oil ...

Page 19: ...s of front cover 13 7 N m 140 kgf cm 121 5 in Ibs Hex socket hd bolts M6 x 25 2 Attached bolts of bearing cover A 4 41 0 49 N m 45 5 kgf cm 39 1 4 3 in Ibs Hex socket hd flat bolts M5 x 12 3 Tapping screws D5 2 94 0 49 N m 30 5 kgf cm 26 0 4 3 in Ibs 4 Hex socket hd bolts M6 x 45 9 8 N m 100 kgf cm 86 8 in Ibs 5 Attached bolts of tail cover 4 9 N m 50 kgf cm 43 4 in Ibs Hex socket hd bolts M5 x 10...

Page 20: ...ests On completion of disassembly and repair measure the insulation resistance and dielectric strength Insulation resistance 7 MΩ or more with DC 500 V Megohm Tester Dielectric strength AC 4 000 V 1 minute with no abnormalities 220 V 240 V and 110 V for U K products AC 2 500 V 1 minute with no abnormalities 110 V 127 V except U K products 9 1 7 No load current value After no load operation for 30 ...

Page 21: ...0 min 50 Handle A Handle B Transatory Unit Switch B Cord General Assembly Front Cap Grip A Needle Holder Ball Holder Grip B Grip C Housing Ass y Stator Ass y Sleeve A Spring C Cylinder Gear Cover Ass y Needle Bearing Tail Cover Armature Ass y Ball Bearing 6201DD Ball Bearing 608VV Dust Washer B Washer A Crank Shaft Key 4x4x10 Ball Bearing 6203DD Oil Seal First Gear Crank Cover O ring Side Handle A...

Page 22: ...18 19 20 21 22 23 24 25 26 27 28 29 30 31 27 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 58 57 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 51 81 82 52 83 84 85 86 87 88 89 90 91 92 84 83 93 94 95 96 83 84 97 98 99 100 84 83 101 102 103 104 501 502 503 504 505 ...

Page 23: ...14 HAMMER HOLDER B 1 23 320 815 DAMPER B 1 24 320 835 WASHER 1 25 320 816 HAMMER HOLDER C 1 26 320 822 STRIKER 1 27 320 823 O RING 2 28 320 818 CYLINDER HOLDER 1 29 320 820 SLEEVE A 1 30 320 821 SPRING C 1 31 320 819 CYLINDER 1 32 320 826 PISTON PIN 1 33 320 824 PISTON 1 34 320 825 CONNECTING ROD 1 35 986 940 SEAL LOCK HEX SOCKET HD BOLT M6X45 4 36 983 162 SEAL LOCK HEX SOCKET HD BOLT M4X12 4 37 H...

Page 24: ...LUD 74 73 340 519G STATOR ASS Y 120V 1 INCLUD 74 75 73 340 519H STATOR ASS Y 220V 230V 1 INCLUD 74 75 73 340 519E STATOR ASS Y 220V 230V 1 INCLUD 74 FOR GBR 230V EUROPE NOR SWE DEN FIN SUI 73 340 519F STATOR ASS Y 240V 1 INCLUD 74 74 930 703 BRUSH TERMINAL 2 75 930 804 TERMINAL M4 0 10 PCS 1 EXCEPT FOR AUS GBR EUROPE NOR SWE DEN FIN SUI 76 982 631 WASHER A 1 77 608 VVM BALL BEARING 608VVC2PS2L 1 7...

Page 25: ... ARMOR D8 8 1 103 938 051 CORD ARMOR D10 1 1 104 500 394Z CORD 1 CORD ARMOR D10 1 104 500 408Z CORD 1 CORD ARMOR D8 8 FOR AUS 104 500 446Z CORD 1 CORD ARMOR D8 8 FOR GBR 230V 104 500 454Z CORD 1 CORD ARMOR D8 8 FOR GBR 110V 104 500 390Z CORD 1 CORD ARMOR D8 8 FOR EUROPE NOR SWE DEN FIN 104 500 391Z CORD 1 CORD ARMOR D8 8 FOR SUI 104 500 434Z CORD 1 CORD ARMOR D8 8 FOR USA CAN 501 313 471 BULL POIN...

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