Hitachi Power Tools
Contents
1. Ces contes Dole usse dun 7 4 O ring Replacement 8 REFERENCE INFOBMATIODL anne ananas 8 1 Sealed and Dust proof Structure VIDE ATOM OI OOM SOS OR 8 3 Stop Lever ORT 9 4 nn n mer onc Et utum Ve dp 9 PRECAUTIONS IN DISASSEMBLY AND REASSEMBLY 10 DIS SR RM E Rn 10 2 a c OO 12 9 3 Application of soe nter ext e enm ean utut ne 14 9 4 Tightening Torque 14 RE 15 15 9 7 No load Current Value ea bases a ea a 15 10 STANDARD REPAIR TIME UNIT SCHEDULES nn 16 Assembly Diagram for 655 2 1 PRODUCT Hitachi Demolition Hammer Model H 65SB2 2 MARKETING OBJECTIVE The new Model 65SB2 is the upgraded version of the current Model 65SB developed to realize the class top demolition performance and2. Front Cover Second Hammer O ring C O ring B Damper A O ring x 2 Shank Sleeve Mouth Mouth Cover Urethane Ring Striker O ring 1AS 60 O ring A Oil Seal A Piston Connecting Rod Ass y Needle Bearing Ges Armature Ass y Ball Bearing 6201DD Inner Cover Ball Bearing 6205DD Crank Shaft Ball Bearing 6203DD Housing Ass y Stator Ass y Cylinder Case Hitachi Power Tools LIST NO E482 ELECTRIC TOOL PARTS LIST B DEMOLITION HAMMER 2004 10 10 Model 65SB2 E1 PARTS cope wo _ 323 734 65SB2 NYLOCK HEX SOCKET HD BOLT M8X40 323 736 DAMPER PLATE 323 737 COLLAR 323 735 FRONT DAMPER 998 424 956 975 SPRING CASE LEVER SPRING 998 425 DAMPER B 323 733 FRONT COVER 323 732 SECOND HAMMER 323 748 998 426 STOP LEVER NEEDLE ROLLER 998 428 O RING C 998 427 O RING B 998 433 DAMPER A 16 323 731 323 730 O RING 26 5 SHANK SLEEVE 17 956 963 MOUTH 18 956 962 MOUTH COVER 19 323 729 MOUTH WASHER 20 956 960 320 374 URETHANE RING HANDLE STAY W NUT 323 728 CYLINDER CASE 956 996 O RING 1AS 60 323 724 STRIKER 26 998 414 306 163 O RING A NYLOCK HEX SOCKET HD BOLT M8X35 27 949 433 BOLT WASHER 8 10 P
3. MR 1 D 7 x TO 5 x 50 100 Internal wire Housing Ass y 49 Vinyl Tube 79 Fig 10 ld 6 Reassembly of the Stop Lever 10 Prior to reassembly thoroughly coat the grease 6 Doubrex 251 Part No 980757 is 5 recommended on the sliding portion of the Stop Lever 10 As illustrated in Fig 11 place the end surface of the Stop Lever 10 on the flange portion of the Front Cover 8 and compress the Lever Spring 6 by pressing Damper B 7 with two slender flat blade screwdrivers Then align the holes of the Stop Lever 10 and the Spring Case 5 and insert the Needle Roller 11 9 3 Application of Adhesive 1 Prior to reassembly all hexagon socket hd bolts M5 and M6 and machine screws must be coated with Screw Locking Agent TB1401 2 The following parts must be replaced with Hitachi Genuine Parts if they are loosened o Front cover fixing bolts M8 x 40 1 Cylinder case fixing bolts M8 x 35 26 Fixing bolt on the Connecting Rod Ass y 31 M8 x 16 34 CAUTION If fastening bolts come loose from vibration it could cause serious damage to the machine Ensure without fail that TB 1401 Screw Locking Agent is applied as directed above prior to reassembly Before applying the TB 1401 carefully clean any grease or other foreign matter from the male and female threads with gasoline thinner or similar cleaning solvents 9 4 Tightening Torque He
4. flattened part directed Front cover upward Y Tool shank Stop lever Fig 3 8 4 Movement of Stop Lever After an extended period of use the operation of the stop lever may become difficult due to incursion of concrete powder or similar materials into its sliding portion In such a case apply oil into the sliding portion between the stop lever and the fitting portion of the front cover 9 PRECAUTIONS IN DISASSEMBLY AND REASSEMBLY The circled numbers in the descriptions below correspond to the item numbers in the Parts List and exploded assembly diagram 9 1 Disassembly NOTE If it is difficult to loosen and remove the fixing bolts use an appropriate heating device to heat them to approximately 80 176 1 Disassembly of the Armature Ass y 75 A Loosen the four Seal Lock Hex Socket Hd Bolts M4 x 8 54 remove the Cap Covers 55 Cap Rubbers 56 and Brush Caps 57 and take out the Carbon Brushes Auto Stop Type 1 Pair 58 At this time be very careful not to lose the disassembled parts Loosen the four Nylock Hex Socket Hd Bolts M8 x 35 26 and remove the Cylinder Case 22 Next after loosening the Seal Lock Hex Socket Hd Bolt M8 x 16 34 the Connecting Rod Ass y 31 and the Crank Washer 33 can be disassembled Leave the Striker 24 and the Piston 30 as they are Remove the four Seal Lock Hex Socket Hd Bolts M5 x 16 63 and three Tapping Screws W Flange
5. 124 0 Shock absorbing handle Weight without cord kg 16 5 36 4 Ibs 16 0 35 3 lbs 15 0 33 1 Ibs 17 0 37 5 Ibs 6 2 Demolition Performance Comparison The products listed below were subjected to 30 minutes of chiseling operation on identical concrete structures or blocks and the amount of concrete demolished were compared as shown Demolished amount kg 30 min 0 100 200 300 At rated voltage Demolished weight E NOTE The values above are for reference only Demolition amount may vary in accordance with operating conditions operator skill etc 7 PRECAUTIONS IN SALES PROMOTION In the interest of promoting the safest and most efficient use of the Model 65SB2 Demolition Hammer by all of our customers it is very important that at the time of sale the salesperson carefully ensures that the buyer seriously recognizes the importance of the contents of the Handling Instructions and fully understands the meaning of the precautions listed on the caution plate attached to each tool 7 1 Handling Instructions Although every effort is made in each step of design manufacture and inspection to provide protection against safety hazards the dangers inherent in the use of any electric tool cannot be completely eliminated Accordingly general precautions and suggestions for the use of electric power tools and specific precautions and suggestions for the use of the Hammer
6. D4 x 25 Black 96 Remove Handle A 85 Handle B 87 four Nylock Bolts W Flange M5 x 12 105 and Back Cover 82 Remove the six Seal Lock Hex Socket Hd Bolts M6 x 45 60 Gear Cover 38 and Counter Gear 65 Insert a flat blade screwdriver or a similar tool into the air vent of the Inner Cover 42 and raise the Inner Cover 42 Then the Inner Cover 42 Armature Ass y 75 and Crank Shaft 47 can be removed as a single unit At this time be very careful not to damage the Fan 74 As illustrated in Fig 4 support the Inner Cover 42 with an appropriate tubular jig and push down on the end surface of the armature shaft with a hand press to separate the Armature Ass y 75 from the Inner Cover 42 Press the end surface of the armature with a hand press Inner cover 42 Crank Shaft 47 Tubular jig 2 Disassembly of the Crank Shaft 47 section First remove the four Seal Lock Hex Socket Hd Bolts M5 x 16 46 which fix the Bearing Cover 45 Then as illustrated in Fig 5 support the lower surface of the Inner Cover 42 with an appropriate tubular jig align an appropriate steel rod with the end surface of the Crank Shaft 47 and press down on the steel rod with a hand press The Ball Bearing 6205DDCMPS2L 44 Distance Ring B 41 Final Gear 40 two Woodruff Keys 4 x 16 71 and Crank Shaft 47 can then be disassembled from the Inner Cover 42 10 Press the end surface of the cr
7. absorb the vibration from the main body of the tool and minimize its transmission to the arms of the operator One is mounted between the handle and the gear cover the other is mounted between the handle and the housing Anti vibration rubber Made of natural rubber The side handle made of natural rubber reduces vibration transmitted to hands for reduction of operator s fatigue Anti vibration rubber Anti vibration side handle 3 Provided with shock absorbers to reduce vibration during operation Vibration transmitted from an attachment tool to the main body is reduced by floating the front cover with two shock absorbers front dampers The Model H 65SB2 is easier to operate and reduces operator fatigue 4 Soft touch switch handle comfortably fits in the palm of a hand The double layer molded switch handle consists of a nylon resin base covered with a soft resin to ensure a soft touch 5b Internal double insulation construction with sturdy aluminum frame The Model H 65SB2 is equipped with a very sturdy highly rigid aluminum die cast outer frame that is the same as the current Models 65SB and 45MH In addition a plastic internal S holder is adopted to realize double insulation construction The housing has greater rigidity thanks to the ribs efficiently positioned according to the analysis technology and also the double insulated motor has greater durability The service life of the carbon brushes is greatl
8. are listed in the Handling Instructions to enhance the safe efficient use of the tool by the customer Salespersons must be thoroughly familiar with the contents of the Handling Instructions to be able to offer appropriate guidance to the customer during sales promotion 7 2 Caution Plate Each Model H 65SB2 is provided with a Caution Plate which lists basic precautions illustrated below in its use Carefully ensure that the customer fully understands and follows these precautions before using the tool CAUTION e Read thoroughly HANDLING INSTRUCTIONS before use Caution Plate on the back of the tool case lid CAUTION The grease should be exchanged once every six months after the machine is purchased The authorized HITACHI power tool repair shop or the shop from where the tool was bought should be instructed when it is time to exchange the grease Before working on walls floors etc check for buried or hidden electrical wires and water or gas pipes 7 3 Grease Replacement Different kinds of grease are used in the electro pneumatic hammering section and the speed change gear section It is not necessary to replenish the grease unless the tool is disassembled or there is grease leakage due to a damage or worn seal To ensure the smooth reciprocating of the striker and the second hammer special grease Part No 980927 or 981840 for impact drill is used in the hammering section If the hammering section inside the c
9. durability with low noise and vibration level The outstanding features are as follows 1 Strongest demolition power and lowest noise and vibration level in this class 2 More rigid and durable housing than that of the current model thanks to the analysis technology 3 Soft touch switch handle comfortably fits in the palm of a hand 4 Unique design 3 APPLICATIONS Crushing of concrete and similar materials e Groove and channel digging in concrete e Groove and channel digging in asphalt and gravel roads Tamping compacting of asphalt and graveled roads Cutting of asphalt 4 SELLING POINTS Strongest demolition power in this class Soft touch and 360 Vibration absorbing handle rotation side handle Soft touch grip for easier handling Vibration insulating structure Internal double insulation construction with sturdy aluminum frame 4 1 Selling Point Descriptions 1 Strongest demolition power in this class HITACHI HITACHI The powerful impact force of each blow H 65SB2 65SB C 1 ensures efficient and easy crushing of Concrete demolition 100 67 concrete The crushing performance is 1 3 ratio Concrete to 1 5 times more powerful than similar 287 256 192 230 demolition amount kg 565 1 Ibs 565 1 Ibs 423 3 Ibs 507 1 Ibs products 2 Anti vibration handle for less operator fatigue There are two anti vibration rubbers illustrated below designed to efficiently
10. force of more than 30 kg When a hissing sound is heard the piston is properly inserted in the striker The hissing is the sound of the compressed air escaping from the striker when the piston reaches the respiratory chambers within the striker 12 4 Mounting Oil Seal A 28 When mounting Oil Seal A 28 on the Piston 30 ensure Oil seal A 28 Lip that the lip portion of the oil seal is directed toward the rear O ring A 25 surface of the piston as illustrated in Fig 9 Prior to reassembly thoroughly coat grease Grease for Piston 30 Impact Drill Part No 980927 is recommended on Oil Seal A 28 and O ring A 25 and carefully ensure they are not damaged Fig 9 5 Safety precautions in wiring work See Fig 10 Switch B 1P Screw Type W Lock 103 is flexibly supported by the Support 104 to protect it from damage due to vibration which could lead to possible electrical shock Ensure without fail that the Support 104 is properly mounted Also ensure that the leadwires are properly covered by Vinyl Tube 1 0 7 x TO 5 x 50 100 and that the leadwires of the Stator Ass y 78 and the grounding leadwire are properly supported by the internal Vinyl Tube 79 Handle A 85 EE ess Switch B 1P Screw Type W Lock 103 Support 104 Stator Ass y 78 Armature Ass y 75 S ES 2 Vinyl Tube j EX E 2
11. the following items 1 Reassembly of the Crank Shaft 47 section Press fit the Ball Bearing 6205DDCMPS2L 44 into the Inner Cover 42 and fasten the Bearing Cover 45 onto the Inner Cover 42 with the four Seal Lock Hex Socket Hd Bolts M5 x 16 46 Support the inner race of the Ball Bearing 6205DDCMPS2L 44 with an appropriate jig and press fit the Crank Shaft 47 into the ball bearing Next insert Distance Ring B 41 and the two Woodruff Keys 4 x 16 71 into the Crank Shaft 47 and press fit the Final Gear 40 and the Ball Bearing 6302VVCMPS2L 39 with a hand press 2 Reassembly of the Armature Ass y 75 Press fit the Ball Bearing 6203DDCMPS2L 68 into the Inner Cover 42 fasten Bearing Cover A 67 onto the inner cover with the three Seal Lock Hex Socket Hd Bolts M5 x 16 46 3 Reassembly of the Striker 24 Two possible methods A After the Connecting Rod Ass y 31 has B Mount the Piston 30 onto the Connecting Rod been assembled into the Housing 5 Ass y 31 and push down on the Connecting Rod 49 mount the Piston 30 and press it Ass y 31 to press the Piston 30 into the Striker into the Striker 24 24 Push Ass y 49 4 Connecting Rod Ass y 31 Connecting Rod Ass y 31 2 24 iston 30 Respiratory holes Striker 24 Piston 30 Respiratory holes Fig 8 Either of the two methods described above requires a pressing
12. 59 140 CONNECTOR 50091 10 PCS FOR NZL AUS GBR SAF EUROPE FIN NOR SWE DEN AUT SUI 938 307 PILLAR TERMINAL FOR AUS SAF EUROPE FIN 307 028 SCREW W FLANGE D4X25 BLACK NOR SWE DEN AUT SUI 984 750 TAPPING SCREW W FLANGE 04 16 960 266 CORD CLIP 981 9872 CORD CLIP FOR SUI 949 423 WASHER 10 PCS FOR AUS GBR SAF EUROPE FIN NOR SWE DEN SUI 981 974 INTERNAL WIRE 306 681 INTERNAL WIRE FOR VEN THA MYA GBR 306 143 SWITCH 1P SCREW TYPE W LOCK 323 742 SUPPORT 322 142 NYLOCK BOLT W FLANGE M5X12 500 2062 106 500 3942 CORD ARMOR 010 7 CORD ARMOR D10 7 FOR SYR 106 500 2352 ARMOR D8 2 FOR INA 106 500 4242 ARMOR D8 2 FOR KUW 106 500 3902 ARMOR D10 7 FOR EUROPE 500 4082 AUT FIN NOR SWE DEN CORD ARMOR D8 2 FOR NZL AUS 500 3912 ARMOR D10 7 FOR SUI 500 2472 ARMOR D10 7 FOR SAF 500 4662 CORD ARMOR 010 7 FOR GBR 110 500 4502 958 049 CORD ARMOR 08 2 996 438 VINYL TUBE 1 0 7 5 50 980 063 TERMINAL FOR CORD 930 804 TERMINAL 4 0 10 PCS FOR CORD 940 778 CORD ARMOR 010 7 323 747 STOP LEVER ASS Y 4 ALTERNATIVE PARTS STANDARD ACCESSORIES CODE DESCRIPT
13. CS 28 998 415 OIL SEAL A 29 944 928 PISTON PIN 30 998 413 998 434 PISTON CONNECTING ROD ASS Y 944 921 NEEDLE BEARING NTN 8E NK 18 20 RDO 956 955 CRANK WASHER 996 364 SEAL LOCK HEX SOCKET HD BOLT M8X16 306 166 GRIP 36 320 375 HEX SOCKET HD BOLT M8X16 37 306 165 SIDE HANDLE ASS Y 38 323 723 COVER 39 630 2VV BALL BEARING 6302VVCMPS2L 40 944 916 FINAL GEAR 41 944 915 DISTANCE RING B 42 323 722 INNER COVER 43 323 725 SEAL RING 44 620 5DD BALL BEARING 6205DDCMPS2L 45 956 949 BEARING COVER 46 990 079 5 LOCK HEX SOCKET HD BOLT 5 16 47 998 430 SHAFT 48 HITACHI LABEL 49 323 721 HOUSING ASS Y INCLUD 59 91 50 944 918 D5X15 8 51 HTACHLABL 1 o ALTERNATIVE PARTS 10 04 conn 65SB2 980 717 O RING 5 38 990 945 CAP ASS Y INCLUD 52 877 838 SEAL LOCK HEX SOCKET HD BOLT M4X8 323 727 CAP COVER 944 960 RUBBER 940 540 BRUSH 999 086 CARBON BRUSH AUTO STOP TYPE 1 PAIR 956 984 BRUSH HOLDER 986 940 SEAL LOCK HEX SOCKET HD BOLT M6X45 980 750 GUIDE PLATE 980 727 HANDLE RUBBER 990 079 SEAL LOCK HEX SOCKET HD BOLT M5X16 620 1VV BALL BEARING 6201VVCMPS2L 956 948 COUNTER
14. GEAR 600 1VV BALL BEARING 6001VVCMPS2L 944 911 BEARING COVER A 620 300 BALL BEARING 6203DDCMPS2L 960 251 HD TAPPING SCREW 05 65 956 764 SPECIAL WASHER 956 850 WOODRUFF KEY 4X16 FOR NZL AUS GBR SAF EUROPE FIN NOR SWE DEN AUT SUI 360 286C ARMATURE ASS Y 110V 115V 360 286E ARMATURE ASS Y 220V 230V 360 286F ARMATURE ASS Y 240V 306 098 FAN GUIDE 945 932 BRUSH TERMINAL 340 259C STATOR ASS Y 110V 115V 340 259E STATOR ASS Y 220V 230V 77 340 259F STATOR ASS Y 240V 77 340 259H STATOR ASS Y 240V 77 FOR AUS 322 530 VINYL TUBE 944 954 BEARING WASHER 323 743 991 711 DISTANCE PIECE B 323 744 HANDLE 959 141 CONNECTOR 50092 10 PCS 959 141 CONNECTOR 50092 10 PCS FOR AUS GBR SAF EUROPE FIN 994 190 INTERNAL WIRE 944 907 DISTANCE RING 996 370 FAN NOR SWE DEN AUT SUI FOR NZL AUS SAF FOR GBR EUROPE FIN NOR SWE DEN AUT SUI FOR NOISE SUPPRESSOR NAME PLATE 994 273 NOISE SUPPRESSOR 317 491 NOISE SUPPRESSOR 930 153 SUPPORT 91 938 477 HEX SOCKET SET SCREW M5X8 92 323 726 TAIL COVER 10 04 ALTERNATIVE PARTS 620 100 BALL BEARING 6201DDCMPS2L 323 740 BACK COVER 323 741 HANDLE PACKING CODE NO DESCRIPTION 991 690 SEAL LOCK HEX SOCKET HD BOLT M5X12 9
15. ION 944 961 BULL POINT 410 H 65SB2 872 422 HEX BAR WRENCH 6MM 943 277 HEX BAR WRENCH 3MM 314 179 CASE STEEL OPTIONAL ACCESSORIES E me _ 944 962 COLD CHISEL 410MM HEX SHANK TYPE 944 964 CUTTER W75X45L ROUND SHANK TYPE 944 966 RAMMER SHANK HAMMER 944 965 RAMMER 200MM 957 154 981 840 SCOOP 380L ROUND SHANK TYPE GREASE A FOR HAMMER HAMMER DRILL 30G 308 471 GREASE FOR HAMMER HAMMER DRILL 70G 930 035 GREASE SEP 3A 100G 980 927 GREASE FOR HAMMER HAMMER DRILL 500G 323 745 SERVICE KIT H 65SB2 INCLUD 30 32 33 37 47 52 56 58 99 606 608 ALTERNATIVE PARTS 65SB2 ITEM NO CODE NO DESCRIPTION Printed in Japan 10 04 041010N Hitachi Koki Co Ltd Tokyo Japan
16. MODEL H 65SB2 Hitachi Power Tools TECHNICAL DATA DEMOLITION HAMMER AND H 65SB2 SERVICE MANUAL LIST No E482 Oct 2004 SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT Throughout this TECHNICAL DATA AND SERVICE MANUAL symbol is used in the place of company name and model name of our competitor The symbol utilized here is as follows Competitor Symbol Utilized Company Name Model Name MAKITA HM1304 CONTENTS PRODUCT NAME 2 MARKETING OBJECTIVE T o Se MMO Deser HONS m m TRI EGIPIG ATION S men ane EENE 5 1 Optional CCC SSO MOS a na an 6 COMPARISON WITH SIMILAR PRODUCTS 3 6 1 Specification COITIDAFISOLD nac 6 2 Demolition Performance Comparison 7 PRECAUTIONS IN SALES PROMOTION one Fe amp E E A A A A E a ne ro 7 2 Caution Plate 7 3 Grease Replacement 2
17. ank shaft by fitting a steel rod with a hand press Ball Beari 2VVCMPS2L Final Gear 40 all Bearing 630 CMPS2L 39 Inner cover 42 Crank Shaft 47 Fig 5 3 Disassembly of remaining parts from the Inner Cover 42 Loosen the three Seal Lock Hex Socket Hd Bolts M5 x 16 46 and take out Bearing Cover A 67 and the Ball Bearing 6203DDCMPS2L 68 4 Disassembly of the Mouth 17 and realated parts Hemove six Nylock Hex Socket Hd Bolts M8 x 40 1 Remove the Collar 3 Damper Plate 2 two Front Dampers 4 and Front Cover 8 from the Cylinder Case 22 Then the Second Hammer 9 Shank Sleeve 16 Damper A 14 Mouth 17 Mouth Cover 18 Mouth Washer 19 and Urethane Ring 20 can be removed as a single unit 5 Removal of the O ring 26 5 15 As the O ring 1 0 26 5 15 is installed in the inner portion of the Shank Sleeve 16 it may be difficult to remove As illustrated in Fig 6 pry the O ring upward gently with a small minus screwdriver being very careful not to damage the surface of the O ring 6 Removal of the Striker 24 and related parts Remove the four Nylock Hex Socket Hd Bolts M8 x 35 26 and separate the Cylinder Case 22 from the Housing Ass y 49 From the Cylinder Case 22 take out the Striker 24 Piston 30 and Connecting Rod Ass y 31 in a single body Holding the Striker 24 firmly in one hand grasp the Connecting Rod Ass y 31 in the other hand and pul
18. ing the mechanism O ring Inner diameter 44 4 mm O ring x 2 Inner diameter 23 7 mm Nf SE O ring Inner diameter 64 4 mm Cylinder case 8 2 Vibration proof Structure TRE O ring Inner diameter 59 6 mm Switch handle Handle rubber Seal ring TEENS i E ME E m ns TUE LICE cus DILE gt pint LT Housing O ring Inner diameter 37 5 mm Fig 1 There are anti vibration cushions handle rubbers provided between the switch handle and the crank case and the motor housing which allow significantly less vibration to transfer from the tool to the arm of the operator than convetional type hammers Anti vibration rubber As shown in Fig 2 the main unit and the handle are coupled only by the anti vibration rubber As vibration is absorbed by the shearing type anti vibration construction the anti vibration effect is high 8 3 Stop Lever Tool Retainer See Fig 3 To attach and detach the tool bull point etc as shown in Fig 3 pull the stop lever in the direction of arrow and turn it 180 Then fully insert the tool into the hexagonal hole of the front cover Anti vibration rubber Handle rubber Plate B Connected with the handle Plate A Connected with the hammer main body Vibration works in the shearing direction of the rubber Fig 2 Hold the tool with its
19. l it forcefully to separate it from the striker Finally extract the Piston Pin 29 from the Piston 30 and separate the Piston from the Connecting Rod Ass y 31 7 Disassembly of the Stop Lever 10 Lever Spring 6 Flat blade otop Lever 10 screwdriver CAMPEN SELI O ring 26 5 15 Needle Roller 11 Spring EA PRU PN imm NO dia hole Shank Sleeve 16 Steel rod O O Push Damper B 7 8 mm dia with two flat blade or less Overlap the end surface of screwdrivers the Stop Lever 10 on the flange portion of the Front Cover 8 Fig 6 Fig 7 E LEES Disassembly procedures are illustrated in Fig 7 Pull the Stop Lever 10 outward in the direction indicated by the arrow and turn it slightly so that its end surface comes to rest on the flange portion of the Front Cover 8 Next turn the Spring Case 5 so that the holes of the Spring Case 5 are aligned with the Needle Roller 11 Then push in Damper B 7 with flat blade screwdrivers to compress the Lever Spring 6 Finally while keeping the lever spring compressed fit a 3 mm dia or less steel rod into the hole of the Spring Case 5 and push out the Needle Roller 11 The Stop Lever 10 Damper B 7 and the Lever Spring 6 can then be taken out 9 2 Reassembly Reassembly can be accomplished by following the disassembly procedures in reverse However special attention should be given to
20. xagon socket flanged bolts M5 40 5 kg cm 34 8 4 3 Ib in Hexagon socket hd bolts M4 4515 kg cm 39 1243 Ib in Hexagon socket hd bolts M5 80 kg cm 69 5 i Ib in Hexagon socket hd bolts M6 100 Eo kg cm 86 9 i n Ib in Hexagon socket hd bolts M8 300 20 kg cm 260 174 Ib in Tapping screw D4 20 5 17 4 2 Ib in NOTE If above bolts are tightened more than the designated values it may cause breakage Without fail tighten the bolts and screws according to the above specified values 14 9 5 Wiring Diagram E Connector Switch EX r a pee a Vinyl Tube Connector aee 73 Noise Suppressor q Vinyl Tube 7 BH Connector Fig 12 9 6 Insulation Tests After disassembly for repair servicing the insulation resistance should be measured and the dielectric strength test withstand voltage test performed Insulation resistance 7 M Q or greater Dielectric strength Normal after applying 4000 V for one minute 9 7 No load Current Value After no load operation for 30 minutes the no load current value should be as follows 52 10 STANDARD REPAIR TIME UNIT SCHEDULES Variable Work Flow m Handle A Handle B Handle Rubber x 2 Back Cover Switch B Cord Cord Armor General Assembly Gear Cover Ball Bearing 6302VV Final Gear Ball Bearing 6201VV Counter Gear Ball Bearing 6001VV
21. y prolonged minimizing disconnection of the armature and grease leakage 5 SPECIFICATIONS Enclosure Material Aluminum alloy die cast cast aluminum alloy nylon resin handle back cover Painting Silver green metallic and black e Steel carrying case e Bull point Hexagon bar wrench for 8 e Hexagon bar wrench for M4 Standard accessories 5 1 Optional Accessories D Grooving and edging work g 4 LE 1 Cold chisel SR Overall length 410 mm Part No 944962 2 Digging work Substitute for pickaxe 1 Scoop Overall length 550 mm Part No 944967 3 Cutting and stripping work Asphalt cutting and similar works 6 x TE 1 Cutter IN Overall length 410 mm Tamping work 1 Rammer Ext dia 200 mm Overall length 250 mm Part No 944965 Part No 944966 5 Impact drill grease e 500 g Can e 30 g Tube c Grease A Part No 980927 Part No 981840 6 COMPARISON WITH SIMILAR PRODUCT 6 1 Specification Comparison Maker HITACHI H 65SB2 65SB Ce 1 Power input 1 340 1 240 1 430 1 430 Full load impact rate 1 400 1 450 1 300 Width s 420 420 275 285 _ Impact energy per stroke 42 0 Insulation structure o Double insulation Double insulation Double insulation Double insulation No load noise level 846 851 82 Full load vibration level dB VL 121 5 123 0
22. ylinder case and housing crank shaft side is disassembled thoroughly wipe away all old grease from all parts and apply 40 g of new grease within the cylinder case and 40 g of new grease within the housing crank shaft side Do not exceed the designated amounts of grease If there is excessive grease it may flow between the striker and piston and cause reduced hammering efficiency and or increased recoil force N P C SEP 3A Part No 930035 is used in the speed change gear section inside the Gear Cover The proper supply amount is 80 g Never use the hammering section special grease in the speed change section The special soft grease would leak into the motor section and cause serious problems 7 4 O ring Replacement The O ring mounted on the piston is extremely important to ensure adequate sealing of the air pressure Although the O ring is made of special rubber to ensure its long service life it does nonetheless becomes worn and should be replaced periodically depending on the frequency of use of the tool With average use it is recommended that the O ring should be replaced every six months to ensure maximum effectiveness 8 REFERENCE INFORMATION 8 1 Sealed and Dust proof Structure See Fig 1 The cylinder case section and the housing crank case side are sealed by six 6 O rings a holder seal and a seal ring These seals serve to prevent leakage of the grease as well as to prevent dust and dirt from enter
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