DH 25PA, DH 25PB - hitachi
Contents
1. 8 99 ALTERNATIVE PARTS 32 STANDARD ACCESSORIES DH 25PA CODE NO DESCRIPTION REMARKS 971 787 DUST CUP 980 906 STOPPER ROD 980 901 SIDE HANDLE 980 905 ROD HOLDER 980 902 SIDE HANDLE HOLDER 980 904 BAND 980 903 SQUARE BOLT M8 980 939 SIDE HANDLE ASS Y 318 307 CASE INCLUD 503 507 OPTIONAL ACCESSORIES CODE NO DESCRIPTION REMARKS 303 571 DRILL BIT SDS PLUS D4 0X110 303 572 DRILL BIT SDS PLUS D4 3X110 303 573 DRILL BIT SDS PLUS D4 5X110 303 574 DRILL BIT SDS PLUS D4 8X110 303 575 DRILL BIT SDS PLUS D5 0X110 303 578 DRILL BIT SDS PLUS D5 0X160 303 576 DRILL BIT SDS PLUS D5 5X110 303 577 DRILL BIT SDS PLUS D6 0X110 303 579 DRILL BIT SDS PLUS D6 0X160 303 580 DRILL BIT SDS PLUS D6 4X160 303 581 DRILL BIT SDS PLUS D6 5X160 303 582 DRILL BIT SDS PLUS D7 0X160 303 583 DRILL BIT SDS PLUS D7 5X160 303 584 DRILL BIT SDS PLUS D8 0X160 303 585 DRILL BIT SDS PLUS D8 5X160 303 586 DRILL BIT SDS PLUS D9 0X160 303 587 DRILL BIT SDS PLUS D9 5X160 303 588 DRILL BIT SDS PLUS D10 0X160 303 604 DRILL BIT SDS PLUS D10 0X260 303 589 DRILL BIT SDS PLUS D10 5X160 303 605 DRILL BIT SDS PLUS D10 5X260 303 590 DRILL BIT SDS PLUS D11 0X160 303 591 DRILL BIT SDS PLUS D12 0X166 303 606 DRILL BIT SDS PLUS D12 0X260 303 592 DRILL BIT SDS PLUS D12 5X166 303 607 DRILL BIT SDS PLUS2. ORDD DDES a 11 6 2 Drilling Speed Comparisons IAEA AAA AAA AA AAA 12 7 PRECAUTIONS IN SALES PROMOTION A AAA FFF 13 Fl Handling Instructions GADEA EA AAA AAA AA SAA RRA AAA AAA AAA 13 Te Caution Plate RO QUE RR AAA AD SRG THAIS AAA SAE TRESS AA a 13 8 REFERENCES Prob Rd db rp ET E BG D RR d ako Kd 14 8 1 Grease Replacement Procedures FR FF A A AA AAA 14 8 2 O Ring Replacement III NANA ANN RN 14 8 3 Structure of the DH 25PA and DH 25PB Hammer Drills A 15 8 4 Rotation Only and Rotation Striking Changeover Mechanism DH 25PB only 17 8 5 Rotation Only no striking DH 25PB only meme eee eee 17 8 6 Drill BitS HH 18 8 7 Chuck Section rere EMIT T 19 8 8 Dust Collector B AREE REM Rd A EAR ERU PR ER DP RARI ES EU ME EAD COM Ee HASARD CE RA 19 Service Section 9 PRECAUTIONS IN DISASSEMBLY AND REASSEMBLY Veloso GE EGER E Ead Qe FD 21 9 1 Disassembly Aad dais A Rely apes S DIRAS X SA ARS AAA EN REISE MA EIS RAE ROO SAGA HP EU a DAR UU ER MEQUE 21 9 2 Reassembly AS Deo NOS A PU ROC Og Pep Oda id 24 9 3 Tightening Torque O EFI IIR A AA EAR BUMP IBN 25 9 4 Wiring Diagrams A 26 9 5 Wiring Work Seer eee ee ee re ee ARANA Tee eer ee ALEA AAA AE 27 9 6 Insulation Tests
3. 700 Pressing force 98 10 kgf Test material Concrete panel with 600 mA a compression strength of 2352 N cm 240 kgf cm 500 400 pS 3 g 300 o o D 200 100 0 6 8 10 12 14 16 18 20 22 25 Drill bit dia mm Fig 1 Drilling speed comparisons downward drilling 12 7 PRECAUTIONS IN SALES PROMOTION In the interest of promoting the safest and most efficient use of the Models DH 25PA PB Hammer Drills by all of our customers it is very important that at the time of sales 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 power 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 Drill 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 promoti
4. AES 28 9 7 No Load Current Value AAA AAA AAA 28 10 STANDARD REPAIR TIME UNIT SCHEDULES EE EF EU HU EN RT Hep 29 Appendix Assembly Diagram for DH 25PA rn EXC AA DAA ARAN AAA AAA NN 30 Assembly Diagram for DH 25PB IA AAA RAEE 36 1 PRODUCT NAME Hitachi Hammer Drill Rotation Striking single mode Model DH 25PA Hitachi Hammer Drill Rotation Striking Rotation only dual mode Model DH 25PB 2 MARKETING OBJECTIVE The Model DH 25PB is a major modification of the Model DH 20V With a more powerful motor and striker this hammer drill provides improved concrete drilling capacity maximum drill bit dia 25 mm and faster drilling speed than the previous model The Model DH 25PB is compact and lightweight and the double layer molded handle consists of a plastic resin base covered with a soft plastic layer to ensure a soft touch and firm non slip grip This series includes the single mode operation hammer drill Model DH 25PA equipped with a Rotation Striking function which is based on the Model DH 25PB 3 APPLICATIONS 1 Rotation and striking function e Drilling anchor holes Drilling holes in concrete tile brick and similar materials 2 Rotation only function e Drilling holes in steel and wood with chuck adapter Tightening and loosening machine screws and wood screws with chuck adapter Typical applications e Air conditioning nnn668
5. 50MM 982 679 CORE B 65MM 982 680 CORE B 80MM 982 681 CORE BIT B 90MM 982 686 GUIDE PLATE FOR CORE BIT 32MM 982 687 GUIDE PLATE FOR CORE BIT 35MM 982 688 GUIDE PLATE FOR CORE BIT 38MM 982 689 GUIDE PLATE FOR CORE BIT 45MM 982 690 GUIDE PLATE FOR CORE 50MM 982 691 GUIDE PLATE FOR CORE BIT 65MM 982 692 GUIDE PLATE FOR CORE BIT 80MM 982 693 GUIDE PLATE FOR CORE BIT 90MM 982 684 CENTER PIN 109L FOR CORE BIT 032 38 982 685 CENTER PIN 104L FOR CORE BIT 045 90 303 625 CORE BIT SHANK SDS PLUS 25 38MM 1051 303 626 CORE BIT SHANK SDS PLUS 25 38MM 300L 303 627 CORE BIT SHANK SDS PLUS 45 90MM 3001 303 046 BULL POINT SDS 250MM ROUND SHANK TYPE 306 885 DUST COLLECTOR B ASS Y 306 910 SOCKET ADAPTER B 981 840 GREASE A FOR HAMMER HAMMER DRILL 30G 308 471 GREASE FOR HAMMER HAMMER DRILL 70G 980 927 GREASE FOR HAMMER HAMMER DRILL 500G INCLUD 686 INCLUD 698 INCLUD 699 INCLUD 700 INCLUD 701 INCLUD 702 IMCLUD 703 INCLUD 704 INCLUD 705 INCLUD 713 do ALTERNATIVE PARTS Printed in Japan 8 99 Ade 990830 N
6. Drill bit length 166 mm Pn EU Socket adapter B Drill bit length 110 mm Seal cover Dust cover Retaining ring for D30 shaft Outer race D6 35 Steel ball Fig 7 Dust collector B structure 20 9 PRECAUTIONS IN DISASSEMBLY AND REASSEMBLY The Bold numbers in the descriptions below correspond to the item numbers in the Parts List and exploded assembly diagram for DH 25PA and the lt Bold gt numbers to those in the Parts List and exploded assembly diagram for DH 25PB 9 1 Disassembly 1 Disassembly of the Striking Mechanism Section With a drill bit or screwdriver push in the Second Hammer 19 lt 19 gt to release the Striker 3 lt 3 gt from the O Ring FPM 810 20 lt 20 gt Remove the Hex Socket Hd Bolt W Flange 32 lt 32 gt from the Cylinder Case 31 lt 31 gt and then remove the Cylinder Case 31 lt 31 gt from the Crank Case 46 lt 46 gt Remove the Connecting Rod 9 9 from the Crank Shaft 47 47 to remove the Piston 7 7 from the Crank Case 46 46 Lightly tap the Cylinder 2 2 with a plastic hammer to remove the Striker 3 3 If the Striker 3 3 is hard to be removed push the Piston 7 7 connected with the Connecting Rod 9 9 in the Cylinder 2 2 and pull it out with a jerk Then the Striker 3 3 can be pulled out together with the Piston 7 75 2 Disassembly of the Retainer Section
7. ALTERNATIVE PARTS Printed in Japan 8 99 35 990830 Assembly Diagram for DH 25PB N 58 3 ill ee 54 36 PARTS DH 25PB CODE NO DESCRIPTION REMARKS 318 200 NEEDLE PIN 318 022 CYLINDER 318 024 STRIKER 971 760 O RING 992 933 THIRD GEAR 971 760 O RING 992 930 PISTON 992 931 PISTON PIN 318 020 CONNECTING ROD 980 896 SEAL PACKING B 980 948 O RING 980 880 OIL CAP NAME PLATE 959 156 STEEL BALL 07 0 10 PCS 318 023 RETAINER SLEEVE 318 026 NEEDLE 980 890 O RING 0 318 199 O RING 318 025 SECOND HAMMER 301 680 O RING FPM 810 318 027 OIL SEAL 948 310 RETAINING RING 030 SHAFT 690 6BB BALL BEARING 6906 992 906 URETHANE RING 980 891 PIPE 318 028 FRONT CAP 318 029 GRIP 318 030 BALL HOLDER 306 342 HOLDER SPRING 984 118 WASHER 318 021 CYLINDER CASE 992 253 HEX SOCKET HD BOLT W FLANGE M5X25 HITACHI LABEL 992 914 THIRD PINION 600 1DD BALL BEARING 6001DDCMPS2L 992 503 WASHER 992 928 SECOND GEAR 971 087 STOPPER WASHER 959 155 STEEL BALL 03 97 10 PCS 992 916 CLUTCH PLATE 992 926 SPRING PLATE 980 877 BELLEVILLE SPRING 992 504 BUSHING 608 VVM BALL BEARING 608VVC2PS2L 940 079 RETAINING RING FOR 08 980 920 CRANK CASE 318 034 CRANK SHAFT 959 149 STEEL BALL 04 76 10 PCS 620 2DD B
8. MODELS DH 25PA DH 25PB HITACHI POWER TOOLS TECHNICAL DATA HAMMER DRILL MD DH 25PA DH 25PB SERVICE MANUAL LIST Nos DH 25PA E453 DH 25PB E454 Nov 1999 SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT REMARK Throughout this TECHNICAL DATA 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 Competitors Symbols Utilized Company Name Model Name MAKITA HR2010 Notice for use Specifications and parts are subject to change for improvement Refer to Hitachi Power Tool Technical News for further information CONTENTS Business Section Page 1 PRODUCT NAME FT ee AAA AAA E Rp 1 2 MARKETING OBJECTIVE AAA FIN PF FFR rere eee eT rer es rere Tr ene ee Tr rere reer eT ee 1 3 APPLICATIONS IA AI AIN NN ia 1 4 SELLING POINTS ee Cee E 2 4 1 Selling Point Descriptions EIA ANNA AAA AA 3 5 SPECIFICATIONS AAA AAA 4 5 1 Specifications 4 5 2 Optional Accessories RH HI 5 6 COMPARISONS WITH SIMILAR PRODUCTS RIRS AER DES USD STINET CIE ENDE LO MENS 11 6 1 a Specification Comparisons
9. 9 7 No Load Current Value After no load operation for 30 minutes the no load current value should be as follows Voltage V 110 115 120 127 220 230 240 Current A Max 6 2 5 9 5 7 5 4 3 1 3 0 2 8 28 10 STANDARD REPAIR TIME UNIT SCHEDULES MODEL Variable Fixed 10 20 30 40 50 60 min General Assembly Work Flow Switch A Cord Oil Cap O Ring Handle Front Cap Grip Holder Spring Third Gear Pipe Striker O Ring x 2 Piston Urethane Ring Connecting a r r HO Cylinder Case Rod Gear Cover Armature Ass y Ball Bearing 6000DDCMPS2L Ball Bearing 626VVC2PS2L Crank Shaft Ball Bearing 6202DD First Gear Clutch Spring Clutch Shaft Third Pinion Ball Bearing 6001DDCMPS2L Second Gear Clutch Plate Spring Plate Ball Bearing 608VVC2PS2L Oil Seal Retainer Sleeve Second Hammer Ball Bearing 6906 Cylinder Steel Ball Housing Ass y Stator Ass y Crank Case Only DH 25PB 29 Assembly Diagram for DH 25PA o 4 N L 71 8 5a 6Y9 N 09 30 PARTS DH 25PA CODE NO DESCRIPTION REMARKS 318 200 NEEDLE PIN 318 022 CYLINDER 318 024 STRIKER 971 760 O RING 992 933 THIRD GEAR 971 760 O RING 992 930 PI
10. 982 674 CORE A 32MM 982 675 CORE A 35MM 982 676 CORE A 38MM 982 677 CORE 45MM 982 678 CORE 50MM 982 679 CORE 65MM 982 680 CORE 80MM 982 681 CORE BIT B 90MM 982 686 GUIDE PLATE FOR CORE 32MM 982 687 GUIDE PLATE FOR CORE BIT 35MM 982 688 GUIDE PLATE FOR CORE BIT 38MM 982 689 GUIDE PLATE FOR CORE BIT 45MM 982 690 GUIDE PLATE FOR CORE BIT 50MM 982 691 GUIDE PLATE FOR CORE BIT 65MM 982 692 GUIDE PLATE FOR CORE BIT 80MM 982 693 GUIDE PLATE FOR CORE BIT 90MM 982 684 CENTER PIN 109L FOR CORE BIT 032 38 982 685 CENTER PIN B 104L FOR CORE BIT D45 90 303 625 CORE BIT SHANK SDS PLUS 25 38MM 105L 303 626 CORE BIT SHANK SDS PLUS 25 38MM 300L 303 627 CORE SHANK SDS PLUS 45 90MM 300L 303 046 BULL POINT SDS 250MM ROUND SHANK TYPE 306 885 DUST COLLECTOR B ASS Y 306 910 SOCKET ADAPTER B 303 619 A TAPER SHANK ADAPTER SDS PLUS 303 620 B TAPER SHANK ADAPTER SDS PLUS 981 840 GREASE A FOR HAMMER HAMMER DRILL 30G 308 471 GREASE FOR HAMMER HAMMER DRILL 70G 980 927 GREASE FOR HAMMER HAMMER DRILL 500G INCLUD 691 INCLUD 692 INCLUD 693 INCLUD 694 INCLUD 695 INCLUD 696 INCLUD 697 INCLUD 698 INCLUD 706 da da dd Ln doo
11. Crank case Cylinder case Enclosure Aluminum alloy die casting silver Housing green Handle cover gray Handle j eves Glassfiber reinforced Tail cover polyamide resin black Grip Function mode s Rotation and striking Rotation and striking Rotation only Net 3 3 kg 7 3 lbs Weight 3 4 kg 7 5 lbs Gross 5 9 kg 13 0 lbs 6 0 kg 13 2 Ibs Packaging Corrugated cardboard box with case Standard accessories 1 Case 2 Side handle eel 3 Stopper Y AA 4 Dust cup Weight excludes cord and side handle 5 2 Optional Accessories A Drilling anchor holes rotation striking e Drill bit slender shaft 1 Drill bit slender shaft 2 Adapter for slender shaft SDS plus shank Drill bit slender shaft Adapter for slender shaft Outer dia mm Effective length mm Overall length mm Code No Code No 3 4 1 8 45 1 25 32 90 3 17 32 306369 er 3 5 9 64 45 1 25 32 90 3 17 32 306368 e Drill bit taper shank EST C s 1 Drill bit taper shank 2 Taper shank adapter 3 Cotter SDS plus shank 1 Drill bit taper shank 2 Taper shank adapter 3 Cotter Outer dia mm Code No Type Code No Code No 11 7 16 944460 12 3 31 64 944461 12 7 1 2 993038 Morse taper 944477 14 3 9 16 944462 No
12. to achieve optimum results 8 4 Rotation Only and Rotation Striking Changeover Mechanism DH 25PB only The change lever on the Model DH 25PB permits quick and easy changeover between the Rotation Only and Rotation Striking functions Armature rotation is transmitted to the first gear and then to the crank shaft via the two steel balls in the groove of the first gear When the change lever is set to the Rotation Only position the eccentric pin of the change lever pushes up the clutch shaft and the steel balls fall in the groove Thus the first gear idles on the crank shaft When the change lever is returned to the Rotation Striking position the force of the spring in the crank shaft presses the clutch shaft back and the steel balls connect the crank shaft hole and the first gear groove to transmit rotation to the crank shaft 8 5 Rotation Only no striking DH 25PB only To use the tool for drilling holes in steel or wood the chuck adapter and a drill chuck optional accessories must be used Turn the change lever fully clockwise to the drill mark position to obtain Rotation Only function Since the Model DH 25PB is equipped with a change lever for changeover between Rotation Only and Rotation Striking functions merely mounting the chuck adapter will not stop the striking action it is absolutely necessary to turn the change lever to the Rotation Only setting for drilling holes in steel or wood Should the chan
13. BIT SDS PLUS D14 0X166 303 596 DRILL BIT SDS PLUS D14 3X166 303 609 DRILL BIT SDS PLUS D14 3X260 303 597 DRILL BIT SDS PLUS D14 5X166 303 610 DRILL BIT SDS PLUS D14 5X260 303 598 DRILL BIT SDS PLUS D15 0X166 303 599 DRILL BIT SDS PLUS D16 0X166 303 611 DRILL BIT SDS PLUS D16 0X260 303 600 DRILL BIT SDS PLUS D16 5X166 303 601 DRILL BIT SDS PLUS D17 0X166 308 485 DRILL BIT SDS PLUS D17 0X260 303 602 DRILL SDS PLUS D17 5X166 303 612 DRILL BIT SDS PLUS D17 5X260 303 603 DRILL BIT SDS PLUS D18 0X166 303 613 DRILL BIT SDS PLUS D19 0X260 303 614 DRILL BIT SDS PLUS D20 0X250 303 615 DRILL BIT SDS PLUS D22 0X250 308 486 DRILL BIT SDS PLUS D24 0X250 303 616 DRILL BIT SDS PLUS D25 0X450 303 619 A TAPER SHANK ADAPTER SDS PLUS 303 620 B TAPER SHANK ADAPTER SDS PLUS 303 624 CHUCK ADAPTER D SDS PLUS 944 460 TAPER SHANK DRILL BIT D11X100 944 461 TAPER SHANK DRILL BIT D12 3X110 993 038 TAPER SHANK DRILL BIT D12 7X110 944 462 TAPER SHANK DRILL D14 3X110 944 500 TAPER SHANK DRILL BIT D14 5X110 944 463 TAPER SHANK DRILL BIT D17 5X120 944 464 TAPER SHANK DRILL D21 5X140 303 617 TAPER SHANK ADAPTER SDS PLUS NO 1 303 618 TAPER SHANK ADAPTER SDS PLUS NO 2 944 477 COTTER 303 332 HAMMER DRILL CHUCK SET 13MM INCLUD 663 664 303 334 CHUCK HANDLE 303 335 RUBBER CAP 302 976 ANCHOR SETTING ADAPTER A SDS W1 4X260L 3
14. inserted between the second gear and the spring plate as a slip mechanism in the Models DH 25PA and DH 25PB If an excessively large torgue is applied to the tool shaft the second gear idles and does not transmit rotation The slip torgue is adjusted by the slip plate and the belleville coned disk spring pressure Even if the drill bit comes in contact with a reinforcing bar within concrete causing sudden excessive torgue the slip mechanism functions to prevent damage to the gears and possible loss of control of the tool by the operator The slip torgue is set at 2 1 to 3 1 kg m on the tool shaft 246 e Sealed and dust proof construction The cylinder case is totally enclosed by oil seals O rings and other devices to prevent leakage of lubricating grease and to keep dust and dirt out of the internal mechanisms The drill bit chuck portion is protected by a rubber cap front cap to Keep out dust and chips which could cause improper fitting of the drill bit and or other faulty operation of the chuck portion The switch is also fully dust proofed to prevent dust and chips from entering the handle section and causing possible operational trouble or a breakdown of the insulation e Speed control The Models DH 25PA and DH 25PB are equipped with a variable speed control switch which permits free Adjustment of the rotation speed and striking force When drilling fragile materials pull the switch trigger gently for low rotation speed striking force
15. to all hexagon socket head bolts and the Seal Lock Screw W Washers M5 x 25 77 lt 87 gt prior to reassembly 24 9 3 Tightening Torque 1 Tightening torque of each screw and bolt e Hex Socket Hd Bolt W Flange M5 x 25 32 32 4 9 5 Nem 50 kgf cm e Hex Socket Hd Bolt W Flange M5 x 45 63 66 3 43 1 N m 35 kgf cm e Hex Hd Tapping Screw D5 x 45 58 lt 61 gt 2 94 0 49 N m 30 5 kgf cm e Seal Lock Screw W Washers M5 x 25 77 87 2 94 0 49 Nem 30 5 kgf cm Tapping Screw W Flange D5 x 25 Black 74 lt 84 gt 2 94 0 49 N m 30 5 kgf cm Tapping Screw W Flange D4 x 20 Black 83 lt 93 gt 1 96 9 Nem 20 kgf cm e Tapping Screw W Flange D4 x 12 Black 81 1 96 5 Nem 20 e Seal Lock Screw W SP Washer M4 x 12 52 lt 52 gt 1 965 Nem 20 kgf cm Seal Lock Screw W SP Washer M4 x 8 70 1 965 Nem 20 5 Oil Cap 12 12 2 94 0 49 N m 30 5 kgf cm 2 Special grease Although the newly developed grease light yellow is used in the Models DH 25PA and DH 25PB the conventional grease for hammer drill yellow will be supplied for the time being Code Nos 980927 981840 and 308471 There is no problem even if both greases are used during servicing zb 9 4 Wiring Diagrams 1 Products with noise suppressor CR unit Variabl itch Wm Black Stator 000 CH Noise supp
16. 0 O RING 5 26 600 000 BEARING 6000DDCMPS2L 360 505E ARMATURE 220V 230V 992 509 HD TAPPING SCREW D5X45 318 035 INTERNAL WIRE 930 630 BRUSH TERMINAL 946 362 BEARING LOCK 626 VVM BALL BEARING 626VVC2PS2L 980 951 HEX SOCKET HD BOLT W FLANGE M5X45 990 721 BRUSH HOLDER 999 021 CARBON BRUSH 1 PAIR 999 070 CARBON BRUSH AUTO STOP TYPE 1 PAIR 937 847 BRUSH CAP 992 911 FAN GUIDE 340 451F STATOR ASS Y 220V 340 451K STATOR ASS Y 220V 240V 992 500 WASHER A 986 812 HOUSING ASS Y 938 477 HEX SOCKET SET SCREW M5X8 318 018 HANDLE 980 900 PLATE 305 558 TAPPING SCREW W FLANGE D5X25 BLACK 981 373 TUBE D 953 327 CORD ARMOR D8 8 938 051 CORD ARMOR D10 1 993 880 SEAL LOCK SCREW W WASHERS M5X25 318 033 SWITCH B 994 273 NOISE SUPPRESSOR 317 492 SUPPORT B 938 307 PILLAR TERMINAL 318 019 HANDLE COVER 301 653 TAPPING SCREW W FLANGE D4X20 BLACK 937 631 CORD CLIP 984 750 TAPPING SCREW W FLANGE D4X16 500 3907 CORD 500 239Z CORD 500 446Z CORD 500 454Z 500 457Z EXCEPT THA INCLUD 60 FOR THA INCLUD 60 INCLUD 64 71 FOR CORD EXCEPT THA FOR NOISE SUPPRESSOR CORD ARMOR D8 8 CORD ARMOR D8 8 FOR THA CORD ARMOR D10 1 FOR GBR CORD ARMOR D8 8 FOR SAF CORD ARMOR D8 8 FOR CHN
17. 02 975 ANCHOR SETTING ADAPTER A SDS W5 16X260L 303 621 ANCHOR SETTING ADAPTER A SDS W3 8X160L 302 974 ANCHOR SETTING ADAPTER A SDS W3 8X260L 302 979 ANCHOR SETTING ADAPTER B SDS W1 4X260L 302 978 ANCHOR SETTING ADAPTER B SDS W5 16X260L 303 622 ANCHOR SETTING ADAPTER B SDS W3 8X160L 302 977 ANCHOR SETTING ADAPTER B SDS W3 8X260L 971 794 ANCHOR SETTING ADAPTER A W1 4 MANUAL 6 98 ALTERNATIVE PARTS 40 OPTIONAL ACCESSORIES DH 25PB CODE NO DESCRIPTION REMARKS 971 795 ANCHOR SETTING ADAPTER A W5 16 MANUAL 971 796 ANCHOR SETTING ADAPTER A W3 8 MANUAL 971 797 ANCHOR SETTING ADAPTER A W1 2 MANUAL 971 798 ANCHOR SETTING ADAPTER A W5 8 MANUAL 971 799 ANCHOR SETTING ADAPTER B W1 4 MANUAL 971 800 ANCHOR SETTING ADAPTER B W5 16 MANUAL 971 801 ANCHOR SETTING ADAPTER B W3 8 MANUAL 971 802 ANCHOR SETTING ADAPTER B W1 2 MANUAL 971 803 ANCHOR SETTING ADAPTER B W5 8 MANUAL 303 044 CHEMICAL ANCHOR ADAPTER SDS 12 7MMX90L 303 045 CHEMICAL ANCHOR ADAPTER SDS 19 0MMX100L 950 272 DRILL CHUCK 13VLA 930 515 CHUCK WRENCH 10G 303 623 CHUCK ADAPTER SDS PLUS 982 672 CORE A 25MM 982 673 CORE A 29MM 982 674 CORE A 32MM 982 675 CORE A 35MM 982 676 CORE A 38MM 982 677 CORE 45MM 982 678 CORE
18. 1 599817 14 5 73 128 944500 17 5 11 16 944463 21 5 27 32 944464 Morse taper 303618 No 2 Part name Code No A taper 303619 Taper shank adapter A taper or B taper is provided as an B taper 303620 optional accessory but drill bit is not provided 13 mm Hammer drill chuck DH 25PB only For drilling operations when using a straight shank bit for impact drilling with a hammer drill Li 0 Rubber cap Straight shank bit for 13mm 1 2 Hammer drill Chuck wrench impact drills chuck SDS plus shank Part name Code No 13mm 1 2 Hammer drill chuck including chuck wrench 303332 Chuck wrench 303334 Rubber cap 303335 B Anchor setting e Anchor setting bar to permit anchor setting operation with the hammer drill Anchor setting bar caco cu fce Anchor setting adapter SDS plus shank Part name Overall length Code No Part name Overalllengh Code No W 1 4 Anchor setting adapter A 260 302976 W 1 4 Anchor setting adapter B 260 302979 W 5 16 Anchor setting adapter A 260 302975 W 5 16 Anchor setting adapter 260 302978 W 3 8 Anchor setting adapter A 160 303621 W 3 8 Anchor setting adapter B 160 303622 W 3 8 Anchor setting adapter A 260 302974 W 3 8 Anchor setting adapter B 260 302977 Internal cone type External cone type e Anchor setting bar for manual anchor setting Anchor setting adapter Manual hammer Par
19. 318 307 CASE INCLUD 503 507 OPTIONAL ACCESSORIES CODE NO DESCRIPTION REMARKS 303 571 DRILL BIT SDS PLUS D4 0X110 303 572 DRILL BIT SDS PLUS D4 3X110 303 573 DRILL BIT SDS PLUS D4 5X110 303 574 DRILL BIT SDS PLUS D4 8X110 303 575 DRILL BIT SDS PLUS D5 0X110 303 578 DRILL BIT SDS PLUS D5 0X160 303 576 DRILL BIT SDS PLUS D5 5X110 303 577 DRILL BIT SDS PLUS D6 0X110 303 579 DRILL BIT SDS PLUS D6 0X160 303 580 DRILL BIT SDS PLUS D6 4X160 303 581 DRILL BIT SDS PLUS D6 5X160 303 582 DRILL BIT SDS PLUS D7 0X160 303 583 DRILL BIT SDS PLUS D7 5X160 303 584 DRILL BIT SDS PLUS D8 0X160 303 585 DRILL BIT SDS PLUS D8 5X160 303 586 DRILL BIT SDS PLUS D9 0X160 303 587 DRILL BIT SDS PLUS D9 5X160 303 588 DRILL BIT SDS PLUS D10 0X160 303 604 DRILL BIT SDS PLUS D10 0X260 303 589 DRILL BIT SDS PLUS D10 5X160 303 605 DRILL BIT SDS PLUS D10 5X260 303 590 DRILL BIT SDS PLUS D11 0X160 ALTERNATIVE PARTS 8 99 39 OPTIONAL ACCESSORIES DH 25PB CODE NO DESCRIPTION REMARKS 303 591 DRILL BIT SDS PLUS D12 0X166 303 606 DRILL BIT SDS PLUS D12 0X260 303 592 DRILL BIT SDS PLUS D12 5X166 303 607 DRILL BIT SDS PLUS D12 5X260 303 593 DRILL BIT SDS PLUS D12 7X166 303 608 DRILL BIT SDS PLUS D12 7X260 303 594 DRILL BIT SDS PLUS D13 0X166 303 595 DRILL
20. 5 1 20 25 32 1 20 25 32 Stel mm 13425 13 2 13 1 2 13 1 2 Wood mm 32 1 1 4 32 1 1 4 15 19 32 24 15 16 Power input 650 650 460 520 600 No load rotation speed 0 1 100 0 1 100 0 900 0 800 0 900 Full load rotation speed min 0 800 0 800 0 700 0 650 0 735 Full load blow min 0 4 000 0 4 000 0 3 500 0 3 150 0 4 000 ea dB A 89 89 92 85 82 speed control O O O O O Change mode 1 mode 2 modes 2 modes 2 modes 1 mode clutch O O O O O Bit drive system SDS plus shank SDS plus shank SDS plus shank SDS plus shank SDS plus shank Round shank Round shank Round shank Dimensions Length mm 318 12 1 2 318 12 1 2 320 12 19 32 352 13 7 8 287 11 9 32 Height mm 200 7 7 8 210 8 1 4 200 7 7 8 221 8 43 64 214 8 15 32 Width mm 92 8 58 92 3 5 8 94 3 43 64 100 4 91 3 19 32 Weight Note 2 kg 3 3 7 3 lbs 3 4 7 5 lbs 3 1 6 8 lbs 4 4 9 7 lbs 3 1 6 8 lbs Note 1 Mark Equipped Mark X Not equipped 2 Weight excludes cord and side handle 6 2 Drilling Speed Comparisons Drilling speed depends on the operating conditions The test results shown in Fig 1 are based on actual tests at the factory and should be used as a reference only The drill bits which used in the test are the Hitachi genuine SDS plus shank bits
21. 6 ANCHOR SETTING ADAPTER A SDS W1 4X260L 302 975 ANCHOR SETTING ADAPTER A SDS W5 16X260L 303 621 ANCHOR SETTING ADAPTER A SDS W3 8X160L 302 974 ANCHOR SETTING ADAPTER A SDS W3 8X260L 302 979 ANCHOR SETTING ADAPTER B SDS W1 4X260L 302 978 ANCHOR SETTING ADAPTER B SDS W5 16X260L 303 622 ANCHOR SETTING ADAPTER B SDS W3 8X160L 302 977 ANCHOR SETTING ADAPTER B SDS W3 8X260L 971 794 ANCHOR SETTING ADAPTER A W1 4 MANUAL 971 795 ANCHOR SETTING ADAPTER A W5 16 MANUAL 971 796 ANCHOR SETTING ADAPTER A W3 8 MANUAL 971 797 ANCHOR SETTING ADAPTER A W1 2 MANUAL 971 798 ANCHOR SETTING ADAPTER A W5 8 MANUAL 971 799 ANCHOR SETTING ADAPTER B W1 4 MANUAL 971 800 ANCHOR SETTING ADAPTER B W5 16 MANUAL 971 801 ANCHOR SETTING ADAPTER B W3 8 MANUAL 971 802 ANCHOR SETTING ADAPTER B W1 2 MANUAL 971 803 ANCHOR SETTING ADAPTER B W5 8 MANUAL 303 044 CHEMICAL ANCHOR ADAPTER SDS 12 7MMX90L 303 045 CHEMICAL ANCHOR ADAPTER SDS 19 0MMX100L 6 98 ALTERNATIVE PARTS oo lo h h oo o hb oo o eo h lodo do odo do do oo OPTIONAL ACCESSORIES DH 25PA CODE NO DESCRIPTION REMARKS INCLUD 680 950 272 DRILL CHUCK 13VLA 930 515 CHUCK WRENCH 10G 982 672 CORE BIT A 25MM 982 673 CORE BIT A 29MM
22. 8 gt 20 lt 20 gt for Retainer Sleeve 15 lt 15 gt and the O Ring D 17 lt 17 gt e Lip portion of the Oil Seal 21 21 Fill 20 g of special grease in the Cylinder Case 31 lt 31 gt and 17 5 g of special grease in the Crank Case 46 lt 46 gt Fill 60 g of power tool grease No 29 in the Gear Cover 54 lt 57 gt Apply power tool grease No 29 to the Steel Balls 14 lt 14 gt 39 lt 39 gt lt 48 gt and lt 72 gt and Needle 16 lt 16 gt to make reassembly work easier 2 Mounting the First Gear DH 25PB only Insert the Clutch Spring lt 53 gt and the Clutch Shaft lt 54 gt from the constricted side into the hole of the Crank Shaft lt 47 gt Apply power tool grease No 29 to the side hole of the crank shaft and then insert the Steel Ball D4 76 lt 48 gt Insert a steel bar of about 10 mm diameter having flat ends into the First Gear lt 51 gt Pressing the Clutch Shaft lt 54 gt so that the end surface becomes level with the end surface of the Crank Shaft lt 47 gt push in the First Gear lt 51 gt adjusting the first gear groove to the steel ball position 3 Mounting of Oil Seal 21 lt 21 gt Prior to reassembly apply grease to the inner circumference of the Oil Seal 21 lt 21 gt However do not apply grease to its outer circumference Also when press fitting the Oil Seal 21 lt 21 gt ensure that it is straight and level 4 Screw Locking Agent TB1401 Apply screw locking agent TB1401
23. ALL BEARING 6202DDCMPS2L 980 871 BEARING COVER 992 902 FIRST GEAR POS OO ALTERNATIVE PARTS 8 99 37 PARTS CODE NO DESCRIPTION REMARKS DH 25PB 987 203 SEAL LOCK SCREW W SP WASHER M4X12 992 937 CLUTCH SPRING 992 938 CLUTCH SHAFT 992 506 THRUST WASHER 986 276 992 925 STOPPER SPRING GEAR COVER 872 470 O RING S 26 600 0DD BALL BEARING 6000DDCMPS2L 360 505C ARMATURE 110V FOR GBR 110V 360 505E 360 505F ARMATURE 220V 230V ARMATURE 240V 992 509 HEX HD TAPPING SCREW D5X45 318 035 INTERNAL WIRE EXCEPT THA 930 630 BRUSH TERMINAL 946 362 626 VVM BEARING LOCK BALL BEARING 626VVC2PS2L 980 951 HEX SOCKET HD BOLT W FLANGE M5X45 990 721 BRUSH HOLDER 999 021 CARBON BRUSH 1 PAIR 999 070 937 847 CARBON BRUSH AUTO STOP TYPE 1 PAIR BRUSH CAP 991 207 SEAL LOCK SCREW W SP WASHER M4X8 992 936 BALL SPRING 959 148 STEEL BALL D3 175 10 PCS 992 912 302 140 O RING S 8 CHANGE LEVER ASS Y INCLUD 73 992 911 FAN GUIDE 340 451H STATOR ASS Y 110V INCLUD 63 FOR GBR 110V 340 451F STATOR ASS Y 220V INCLU
24. D 63 FOR THA 340 451K 992 500 STATOR ASS Y 220V 240V WASHER A INCLUD 63 986 812 HOUSING ASS Y INCLUD 67 79 938 477 HEX SOCKET SET SCREW M5X8 318 031 TAIL COVER 309 470 318 018 TAPPING SCREW W FLANGE D4X12 BLACK HANDLE 980 900 PLATE 305 558 TAPPING SCREW W FLANGE D5X25 BLACK 981 373 TUBE D FOR CORD 953 327 938 051 CORD ARMOR D8 8 CORD ARMOR D10 1 993 880 SEAL LOCK SCREW W WASHERS M5X25 318 033 SWITCH B 318 032 SWITCH A FOR GBR 110V 994 273 317 492 NOISE SUPPRESSOR SUPPORT B EXCEPT THA FOR NOISE SUPPRESSOR 938 307 PILLAR TERMINAL EXCEPT THA 318 019 HANDLE COVER 301 653 TAPPING SCREW W FLANGE D4X20 BLACK 937 631 984 750 CORD CLIP TAPPING SCREW W FLANGE D4X16 ALTERNATIVE PARTS 38 PARTS DH 25PB CODE NO DESCRIPTION REMARKS 500 439Z CORD ARMOR D8 8 FOR AUS 500 391Z CORD ARMOR D10 1 FOR SUI 500 446Z CORD ARMOR D10 1 FOR GBR 230V 500 457Z CORD ARMOR D8 8 FOR CHN 500 390Z CORD ARMOR D8 8 FOR HOL 500 454Z CORD ARMOR D8 8 FOR SAF GBR 110V STANDARD ACCESSORIES CODE NO DESCRIPTION REMARKS 971 787 DUST CUP 980 906 STOPPER ROD 980 901 SIDE HANDLE 980 905 ROD HOLDER 980 902 SIDE HANDLE HOLDER 980 904 BAND 980 903 SQUARE BOLT M8 980 939 SIDE HANDLE ASS Y
25. D12 5X260 303 593 DRILL BIT SDS PLUS D12 7X166 ALTERNATIVE PARTS 8 99 33 OPTIONAL ACCESSORIES DH 25PA CODE NO DESCRIPTION REMARKS 303 608 DRILL BIT SDS PLUS D12 7X260 303 594 DRILL BIT SDS PLUS D13 0X166 303 595 DRILL BIT SDS PLUS D14 0X166 303 596 DRILL BIT SDS PLUS D14 3X166 303 609 DRILL BIT SDS PLUS D14 3X260 303 597 DRILL BIT SDS PLUS D14 5X166 303 610 DRILL BIT SDS PLUS D14 5X260 303 598 DRILL BIT SDS PLUS D15 0X166 303 599 DRILL BIT SDS PLUS D16 0X166 303 611 DRILL BIT SDS PLUS D16 0X260 303 600 DRILL BIT SDS PLUS D16 5X166 303 601 DRILL BIT SDS PLUS D17 0X166 308 485 DRILL BIT SDS PLUS D17 0X260 303 602 DRILL BIT SDS PLUS D17 5X166 303 612 DRILL BIT SDS PLUS D17 5X260 303 603 DRILL BIT SDS PLUS D18 0X166 303 613 DRILL BIT SDS PLUS D19 0X260 303 614 DRILL BIT SDS PLUS D20 0X250 303 615 DRILL BIT SDS PLUS D22 0X250 308 486 DRILL BIT SDS PLUS D24 0X250 303 616 DRILL BIT SDS PLUS D25 0X450 944 460 TAPER SHANK DRILL BIT D11X100 944 461 TAPER SHANK DRILL BIT D12 3X110 993 038 TAPER SHANK DRILL BIT D12 7X110 944 462 TAPER SHANK DRILL BIT D14 3X110 944 500 TAPER SHANK DRILL BIT D14 5X110 944 463 TAPER SHANK DRILL BIT D17 5X120 944 464 TAPER SHANK DRILL BIT D21 5X140 303 617 TAPER SHANK ADAPTER SDS PLUS NO 1 303 618 TAPER SHANK ADAPTER SDS PLUS NO 2 944 477 COTTER 302 97
26. Front Cap 26 lt 26 gt As shown in Fig 8 slide the Grip 27 27 in the direction indicated by the arrow and remove the Front Cap 26 26 The Grip 27 lt 27 gt the Ball Holder 28 28 inside the Grip the Holder Spring 29 lt 29 gt Washer 30 lt 30 gt and the Steel 14 lt 14 gt can then be removed from the Retainer Sleeve 15 lt 15 gt Grip 27 lt 27 gt Fig 8 Zopa 3 Disassembly of the Cylinder Remove the Cylinder Case 31 lt 31 gt from the Crank Case 46 lt 46 gt and disassemble the retainer section Remove the Pipe 25 lt 25 gt then the Cylinder 2 lt 2 gt from the Cylinder Case 31 lt 31 gt by pulling it straight toward the crank case side being careful not to scratch the Oil Seal 21 lt 21 gt Remove the Retaining Ring for Shaft 22 22 from the Cylinder 2 2 and remove the Ball Bearing 6906 23 23 press fitted onto the Cylinder 2 2 with a hand press The Retainer Sleeve 15 15 and the Cylinder 2 2 can then be removed together Remove the three Needle Pins 1 1 from the perimeter of the Cylinder 2 2 and push the Retainer Sleeve 15 15 to the outside from the inside of the Cylinder 2 2 with a hand press to remove the Retainer Sleeve 15 15 and the Cylinder 2 2 Remove the three Needles 16 16 from the perimeter of the Retainer Sleeve 15 15 and extract the O Ring 20 20 from the in
27. Installation of air conditioners water coolers and heaters and air ducts e Piping and plumbing nnn Installation of gas water and sanitary facilities e Electrical work nnn Installation of light fixtures and various electric appliances e Interior decoration n6 Installation of seating display stands and partitions e Other civil engineering construction and repair work 4 SELLING POINTS Compact and lightweight Overall length 318 mm 12 17 32 Weight DH 25PA 3 3 kg 7 3 lbs DH 25PB 3 4 kg 7 5 lbs DH 25V Overall length 352 mm 13 7 8 Weight 4 4 kg 9 7 16 DH 20V Overall length 352 mm 13 7 8 Weight 3 1 kg 6 8 Ibs B Overall length 287 mm 11 5 1 6 Weight 3 1 kg 6 8 16 Fast drilling speed About 20 faster than the Model DH 20V when the pressing force is 10 kgf Variable speed control switch Powerful 650 W motor DH 25V 600 W DH 20V 460 W Soft touch handle Rotation Striking Rotation only dual mode DH 25PB only Rotation Striking single mode DH 25PA NOTE The Model DH 25PA does not have a changeover knob 4 1 Selling Point Descriptions 4 1 1 Fast drilling speed The drilling speed is 20 faster than the Model DH 20V as the Models DH 25PA and DH 25PB have great striking energy owing to the optimum design of the rotation speed striking frequency and the weight of striker The Models DH 25PA and DH 25PB can drill h
28. STON 992 931 PISTON PIN 318 020 CONNECTING ROD 980 896 SEAL PACKING B 980 948 O RING 980 880 OIL CAP NAME PLATE 959 156 STEEL BALL 07 0 10 PCS 318 023 RETAINER SLEEVE 318 026 NEEDLE 980 890 O RING 0 318 199 O RING 318 025 SECOND HAMMER 301 680 O RING FPM 810 318 027 OIL SEAL 948 310 RETAINING RING 030 SHAFT 690 6BB BALL BEARING 6906 992 906 URETHANE RING 980 891 PIPE 318 028 FRONT CAP 318 029 GRIP 318 030 BALL HOLDER 306 342 HOLDER SPRING 984 118 WASHER 318 021 CYLINDER CASE 992 253 HEX SOCKET HD BOLT W FLANGE M5X25 HITACHI LABEL 992 914 THIRD PINION 600 1DD BALL BEARING 6001DDCMPS2L 992 503 WASHER 992 928 SECOND GEAR 971 087 STOPPER WASHER 959 155 STEEL BALL 03 97 10 PCS 992 916 CLUTCH PLATE 992 926 SPRING PLATE 980 877 BELLEVILLE SPRING 992 504 BUSHING 608 VVM BALL BEARING 608VVC2PS2L 940 079 RETAINING RING FOR 08 980 920 CRANK CASE 318 038 CRANK SHAFT 940 220 WOODRUFF KEY 2 5X8 620 2DD BALL BEARING 6202DDCMPS2L 980 871 BEARING COVER 318 040 DISTANCE COLLAR ALTERNATIVE PARTS 8 99 2 94 PARTS DH 25PA CODE NO DESCRIPTION REMARKS 987 203 SEAL LOCK SCREW W SP WASHER M4X12 318 039 FIRST GEAR 318 352 GEAR COVER 872 47
29. ck section Steel ball Washer B Front cap Holder spring dns epi Forward puce TA Re an i lt gt 4 ie Backward DYT EI Key rails two pieces Ball holder Retainer sleeve Fig 6 The opening where the drill bit is inserted is covered with a front cap rubber to prevent dust from entering inside When the drill bit is inserted the steel ball fits in to the matching groove on the drill bit to lock it in place and prevent it from coming off Two key rails transmit rotating torgue to the drill bit The drill bit can be released by simply pulling the grip back The grip is held forward by a holder spring To mount a drill bit pull the grip back to compress the holder spring The steel ball then moves outward While turning the drill bit push it until it makes contact and is fully inserted Then release the grip so that it moves forward and fixes the drill bit To remove the drill bit simply pull the grip backward fully and pull the drill bit out 8 8 Dust Collector B While drilling holes overhead dust collector B can be mounted on the Models DH 25PA PB to prevent dust and chips from falling downward Dust collector B is intended solely for use when drilling holes in concrete and cannot be used for drilling holes in steel or wood It is designed for use with drill bits with overall lengths of 110 mm 160 mm or 166 mm and cannot be used with any longer bits When using a drill bi
30. ge lever be set to the Rotation Striking position when the tool is used for drilling the striking action may cause the drill chuck to be broken or damaged Sales personnel should carefully ensure that the buyer is thoroughly advised on this point come 8 6 Drill Bits The chuck section is designed exclusively for the popular and widely available SDS plus shank bits as shown in Fig 4 Rotating torque is transmitted to the drill bit by two key rails provided in the tool holding section A steel ball is used to prevent the bit from coming off Compared with a conventional design that uses two needle rollers to both transmit rotating torque and prevent the bit from coming off this new design reduces damage to the shank of the drill bit and extends the service life of the chuck section Key slot two pieces Section A A Shape of SDS plus shank bit FM Key rail two pieces Steel ball Ball holder Retainer sleeve Fig 4 Section of the chuck section The service life of a drill bit with a diameter of 8 mm is approximately 300 holes when drilling into concrete to a depth of 30 mm If reground before the end of its service life the drill bit will continue to provide efficient drilling Fig 5 shows the regrinding angle Regrinding angle of drill bit Rotation direction 25 Section Fig 5 130 18 8 7 Chuck Section Fig 6 shows the construction of the chu
31. h chuck wrench 950272 G Driving screws rotation only DH 25PB only Drill chuck 13VLA Chuck wrench 1 Cross recessed head Phillips bit Overall length 70 mm For use with cross recessed head Phillips screw oy Chuck adapter 0 SDS plus shank 2 Slotted head minus bit Overall length 50 mm For use with slotted head minus screw Stamped bit No Bit tip Bit No Code No Applicable screw dia mm thickness Code No Applicable screw dia mm No 2 955654 0 8 955658 4 No 3 955655 1 955673 5 6 H Drilling screws rotation only DH 25PB only e Plus Phillips driver bit overall length 25 mm for cross recessed head Phillips screws a gt Chuck adapter D SDS plus shank ES Bit No Bit No Screw size Code No No 2 3 5mm 971511Z No 3 6 8mm 971512Z Grease for electric impact drill e Containing 500 g 17 64 oz Code No 980927 E e Containing 30 g 1 06 oz Code No 981840 70 g 2 5 oz Code No 308471 Dust cup dust collector B Dust collector B ass y 306885 210 6 COMPARISONS WITH SIMILAR PRODUCTS 6 1 Specification Comparisons Maker Hitachi Model DH 25PA DH 25PB DH 20V DH 25V x Capacity Concrete mm 25 1 2
32. he Stopper Spring 562 22 e Use of Special Repair Tools e Snap ring pliers J 200 See Fig 9 Used to remove the Retaining Ring for D30 Shaft 22 lt 22 gt which fixes the Ball Bearing 6906 23 lt 23 gt at the tip end of the Cylinder 2 lt 2 gt e Spring hook J 201 See Fig 10 Used to extract the O Ring 20 lt 20 gt inserted at the inner part of the Retainer Sleeve 15 lt 15 gt which is designed to catch and grip the striker to prevent idle hammering As shown in Fig 11 fit the Spring Hook J 201 onto the O Ring 20 lt 20 gt from the outer circumference of the O Ring 18 lt 18 gt and pull it out All dimensions in millimeters 217 Qv nD ery 1 Snap ring pliers J 200 2 Spring hook J 201 Code No 970976 Code No 970977 Fig 9 Fig 10 Spring Hook J 201 O Ring 18 lt 18 gt Fig 11 og 9 2 Reassembly Perform reassembly in the reverse order of disassembly while observing the given precautions and taking care of the following points 1 Lubrication Apply special grease to the following portions e Both holes of the Connecting Rod 9 lt 9 gt Inside of the Cylinder 2 lt 2 gt and the Piston Pin 8 lt 8 gt e Piston 7 lt 7 gt outer circumference of the Striker 3 lt 3 gt and the O Rings 4 lt 4 gt 6 lt 6 gt e Outer circumference of the Second Hammer 19 lt 19 gt e O Rings 18 lt 1
33. he armature is transmitted to the crank shaft and the connecting rod and the piston reciprocates within the cylinder As the piston reciprocates the changing air pressure inside the air chamber between the piston and the striker causes the striker to move and continuously strike against the end of the second hammer At the same time the changing air pressure within the air chamber which moves the striker also provides an air cushion which absorbs the impact of the striking action 15 e Idle striking prevention mechanism The idle striking prevention mechanism in the Models DH 25PA and DH 25PB is different from that of conventional hammer drills When the drill bit is lifted from the concrete surface on completion of drilling the second hammer moves to the position indicated by the continuous lines in Fig 3 and the protruding portion at the tip of the striker is gripped by the O ring mounted on the inner wall of the retainer sleeve Accordingly the air escape slot is opened and there is no change in the air pressure within the air chamber That prevents movement of the striker idle striking operation The gripping force of the O ring on the striker is so small in comparison with the conventional mouth system that practically no pressing force at all is reguired to restart the striking operation Cylinder Travel distance Air escape slot Tool shaft Retainer sleeve e Slip mechanism A clutch plate holding a steel ball is
34. ner part of the Retainer Sleeve 15 15 The Second Hammer 19 19 can then be removed from the Retainer Sleeve 15 15 For easy extraction of this O Ring 20 lt 20 gt Special Repair Tool J 201 Spring Hook H 75 J 201 onto the outer circumference of the O Ring 20 lt 20 gt and pull it out As the O Ring 20 20 is employed to prevent idle striking please advise customers to replace it with new one whenever it is disassembled Be careful not to lose the three Needle Pins 1 1 and the three Needles 16 lt 16 gt 4 Disassembly of the Gear and the Crank Shaft in the Crank Case The slip clutch section can be removed from the Crank Case 46 46 by tapping the end surface of the Crank Case 46 46 from the gear cover side with a plastic hammer Remove the Retaining Ring for D8 Shaft 45 lt 45 gt and the Ball Bearing 44 44 from the slip clutch section Remove the Third Pinion 34 34 press fitted in the Bushing 43 43 with a hand press Push the Clutch Shaft 54 in the Crank Shaft 47 47 up to the end surface with a stick having a flat edge then pull out the First gear 53 lt 51 gt Be careful not to lose the Clutch Shaft Clutch Spring 53 and two Steel Balls D4 76 48 in the crank shaft hole 5b Disassembly of the Change Lever Ass y in the Gear Cover Insert the blade of a flat blade screwdriver between the Gear Cover 57 and the Stopper Spring 56 and twist to remove t
35. oles in concrete with a maximum drill bit diameter of 25 mm 4 1 2 Powerful 650 W motor Although the motor is the same size as the Model DH 20V power consumption was raised to 650 W by improving the winding specifications and the motor cooling efficiency These are powerful hammer drills that are also compact and lightweight 4 1 3 Variable speed control switch The variable speed control switch allows the rotation speed to be changed freely throughout the drilling operation This permits easy centering and positioning and ensures more effective drilling of fragile materials such as tile and brick 4 1 4 Soft touch handle The double layer molded handle consists of a plastic resin base covered with a soft plastic layer to ensure a soft touch and firm non slip grip of the handle 5 SPECIFICATIONS 5 1 Specifications Model DH 25PA DH 25PB Capacity Concrete 3 4 25 mm 1 8 1 Steel 13 mm 1 2 Wood 32 mm 1 1 4 Power source AC single phase 50 Hz or 60 Hz Voltage V 110 115 120 127 220 230 240 rontang Current A 6 2 59 57 54 31 30 28 Power input W 650 Rotation No load 0 1100 min speed Full load 0 800 min Full load blow rate 0 4000 min Type of motor AC single phase commutator motor Type of switch Variable switch Type of handle D type handle and side handle Materials Gear cover
36. on 7 2 Caution Plate The following basic safety precautions are listed on the Name Plate attached to the main body of each tool However these precautions are not listed for European countries e For Asia and Oceania CAUTION e Read thoroughly HANDLING INSTRUCTIONS before use For the U S A and Canada WARNING e To reduce the risk of injury user must read and understand instruction manual AVERTISSEMENT Afin de reduire le risque de blessures l utilisateur doit lire et bien comprendre le mode d emloi J 8 REFERENCES 8 1 Grease Replacement Procedures The electro pneumatic hammering section and gear change section each use a different kind of grease It is not necessary to replenish the grease unless the tool is disassembled for repair or there is grease leakage due to a damaged seal A special grease is used for the hammering section To change the grease in the hammering section Cylinder Case and Crank Case carefully wipe the old grease off the parts and supply 20 g in the Cylinder Case and 17 5 g in the Crank Case on the Connecting Rod side Take care not to overfill the grease as an excessive amount of grease can cause hammering failure The gear change section in the Gear Cover uses Hitachi Motor Grease No 29 for power tools Supply with 60 g of this grease Do not use the special grease used for the hammering section or it will leak into the motor parts and result in a failu
37. re of the tool 8 2 O Ring Replacement The O ring attached to the Striker and Piston plays an important role to ensure air tightness Despite its prolonged service life due to a special rubber material it will inevitably wear out Early replacement preferably once every six months is recommended 14 8 3 Structure of the DH 25PA and DH 25PB Hammer Drills Grip Air chamber Crank shaft Needle pin Second Cylinder Third Piston First gear moni gap hammer gear Connecting GER a E bes Y dH SA RSS Pr ELE e LA 2 EE O ring SA aid Retainer 2 sleeve Second gear Uu CE DA M Third pinion Ta Armature Handle Fig 2 T e Transmission of rotation Transmission of rotation is described with reference to Fig 2 The gear arrangement of the Models DH 25PA and DH 25PB is the same as that of Model DH 20V Rotation of the armature is transmitted to the second gear to rotate the third gear via the slip mechanism between the second gear and the third pinion shaft Rotation of the third gear is then transmitted to the cylinder threaded onto the third gear Rotation of the cylinder is transmitted to the retainer sleeve coupled together by means of three needle pins and then to the drill bit inserted into the retainer sleeve by way of two key rails and a steel ball which hold the bit Striking function Rotation of t
38. ressor pf Black Cord Black T i T M2 Black QUU pec ES Stator Fig 12 2 Products without noise suppressor Variable switch Stator M1 Cord Fig 13 96 a Armature 9 5 Wiring Work Wiring of variable switch Insert each cord into the terminal 11 and terminal 2 2 21 of the variable switch as shown in Fig 14 and 8 8 tighten the screw tightening torque 0 6 0 2 2 S 2 5 6 2 Kgf cm 5 2 1 7 in lbs Insert the lead wire 2 2 8 black coming from the Stator Ass y 68 lt 76 gt into x sth x the terminal M1 and the lead wire black into the 5 g 5 3 terminal M2 Insert each lead wire black coming from the Noise Suppressor 79 89 into the terminals C1 and C2 After the insertion pull each lead wire slightly to check that the lead wires do not come off To disconnect the lead wires insert a small flat blade screwdriver into the windows near the lead wires and pull out the lead wires Cord Cord Fig 14 Connection of variable switch 9 6 Insulation Tests On completion of reassembly after repair measure the insulation resistance and conduct the dielectric strength test Insulation resistance 7 MQ 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 minute with no abnormalities 110V 127 V except for U K products
39. t name Code No Part name Code No W 1 4 Anchor setting adapter A 971794 W 1 4 Anchor setting adapter B 971799 W 5 16 Anchor setting adapter A 971795 W 5 16 Anchor setting adapter B 971800 W 3 8 Anchor setting adapter A 971796 W 3 8 Anchor setting adapter B 971801 W 1 2 Anchor setting adapter A 971797 W 1 2 Anchor setting adapter B 971802 W 5 8 Anchor setting adapter A 971798 W 5 8 Anchor setting adapter B 971803 Internal cone type External cone type C Large hole boring rotation striking e Center pin core bit core bit shank and guide plate a Guide plate Center pin Core bit Core bit shank SDS plus shank 1 Center pin Do not use bit with outer diameter of 25 mm 31 32 and 29 mm 1 5 32 Center pin A Core bit outer diameter 32 35 38 mm 1 1 4 1 3 8 1 1 2 Code No 982684 Center pin Core bit outer diameter 45 50 65 80 90 mm 1 25 32 2 2 9 16 3 5 32 3 9 16 Code No 982685 2 Guide plate Core bit outer diameter mm Code No Core bit outer diameter Code No 32 1 1 4 982686 50 2 982690 35 1 3 8 982687 65 982691 38 1 1 2 982688 80 982692 45 1 25 32 982689 90 982693 3 Core bit with guide plate the guide plate is not required for 25 mm 31 32 and 29 mm 1 5 32 outer diameter core bits Ou
40. t with an overall length of 166 mm with dust collector B drilling up to a depth of approximately 72 mm is possible When using dust collector B ensure it is securely fastened to the grip on the main body with socket adapter B Although the socket and socket adapter B rotate together with the tool shank there is a steel ball between the outer race and the socket which serves as a ball bearing Should the dust cover be forced against the concrete surface it will not rotate even though the tool shank continues to rotate Should the tool be operated when the dust cover is not being held against a concrete surface inertia may cause dust collector B to become disconnected from the grip Accordingly caution the customer to press dust collector B and drill bit firmly against the concrete surface before turning on the switch to start drilling When dust collector B is used almost no dust and chips are scattered about However since the chips and dust remaining in the collector may scatter after completion of the drilling operation the customer should be advised to always wear protective glasses When dust collector B is disassembled for repair or maintenance be very careful to prevent oil or grease from adhering to the steel balls Grease or oil on the steel balls may cause concrete dust to enter the unit and cause defective rotation 19 Approx 72 mm 2 27 32 Approx 16 mm 5 8 Grip on the main body side
41. ter diameter mm Code No Outer diameter mm Code No 25 31 32 982672 45 1 25 32 982677 29 1 5 32 982673 50 2 982678 32 1 1 4 982674 65 982679 35 1 3 8 982675 80 982680 38 1 1 2 982676 90 982681 4 Core bit shank SDS plus shank Core bit shank A Core bit outer diameter 25 38 mm 31 32 1 1 2 Overall length 105 mm 4 1 8 Code No 303625 Overall length 300 mm 11 52 64 Code No 303626 Core bit shank B Core bit outer diameter 45 90 mm 1 25 32 3 9 16 Overall length 300 mm 11 52 64 Code No 303627 D Bolt placing operations with chemical anchor rotation striking LU Standard sockets available on the market gt 12 7 mm 1 2 Chemical anchor adapter SDS plus shank 3 4 Chemical anchor adapter SDS plus shank 19mm Part name Code No 12 7 mm 1 2 Chemical anchor adapter 303044 19mm 3 4 Chemical anchor adapter 303045 E Demolishing operations rotation striking a Bull point round type only SDS plus shank Code No 303046 F Drilling hole rotation only for drilling holes in steel and wood DH 25PB only oy Drill chuck Chuck adapter D 13VLA SDS plus shank Chuck wrench Part name Code No Chuck adapter D for SDS plus shank type 303624 13 mm 1 2 Drill chuck 13VLA wit
Download Pdf Manuals
Related Search