Hitachi Power Tools
Contents
1. eee ete 13 7 PRECAUTIONS IN SALES PROMOTION 14 AS ECO ERE EE EEUU TEES 14 UU mu TER 14 6 REFERENCE MATERIAL LLL l li ll lll l l Uma l RUSO UR Erud UR NE sec un 15 s Libi mE 15 0 2 e MEE D T m uu 15 8 3 Three Mode Changeover ss 20 DABIS ai 23 eC _ m 24 8 6 D st Collector B T Tm 24 9 PRECAUTIONS IN DISASSEMBLY AND REASSEMBLY 26 SS a 26 D RAS SOON 30 LC ICE u u uu 33 Wii e a _ 33 9 5 Internal Wire Arrangement and Wiring Work ii 34 9 6 MSu laton TOSS 36 9 7 No load Current Values 36 10 STANDARD REPAIR TIME UNIT SCHEDULES 37 Assembly Diagram for DH 24PC3 1 PRODUCT Hitachi Rotary Hammer Model 24PC3 2 MARKETING OBJECTIVE The new Model 24PC3 is 3 mode type rotary hammer based on the Model 24PB3 rotary hammer drill It features the hammering only mode that is available for chipping and groove digging in addition t2. 2 0 0 5 N m 20 5 kgf cm 17 4 4 3 in lbs Tapping Screws W Flange D5 X 35 9 2 9 0 5 N m 30 5 kgf cm 26 0 4 3 in Ibs 9 4 Wiring Diagrams 1 Product with noise suppressor CHOKE COIL BLACK OR BROWN TEENS AY St BROWN CORD ASS CI s SUPPRESSOR 2 9l BLUE e 4 108 e 000 WHITE OR BLUE Y 14 dM RED BLACK COIL SPEED CONTROL SW REVERSING SW Fig 27 2 Product without noise suppressor GRAY WHITE BLACK OR BROWN St 1 BRONN CORD 55 1 Q St BLUE 4 O D WHITE OR BLUE nm x RED BLACK x SPEED CONTROL SW REVERSING SW Fig 28 ea 9 5 Internal Wire Arrangement and Wiring Work Internal wire arrangement 1 Product with noise suppressor COIL BLACK STATOR T a CHOKE COIL A BLUE 72 J GRAY STATOR 7 WHITE STATOR WHITE STATOR DE d xu 3 RED STATOR NOISE SUPPRESSOR 78 WHITE OR BLUE BLACK OR BROWN Fig 29 2 Product without noise suppressor BROWN CB BLACK STATOR WHITE STATOR WHITE OR BLUE iz 4 Fig 30 95 Additional wir
3. _ Coil spring Reciprocating bearing j Clutch claw Fig 4 ee Slip mechanism The slip mechanism in the Model DH 24PC3 consists of a coil spring which applies a pre set amount of pressure to ensure the interlocking of three claws provided on the flange of the cylinder the final rotating and six matching claws provided on the face of the second gear by which rotation is transmitted to the cylinder The second gear is fitted to the cylinder with a certain amount of play If an excessively large torque is applied to the tool shaft cylinder the force of the torque will exceed the pressure of the coil spring and cause the claws on the second gear to disengage from and ride over the claws on the cylinder so that the second gear idles and does not transmit rotation Even if the drill bit comes in contact with a reinforcing bar within the concrete causing sudden excessive torque the slip mechanism functions to prevent damage to the gears and possible loss of control of the tool by the operator Sealed and dustproof construction The gear cover 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 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 speed control switc
4. 5 20 Model DH 24PC3 1 PARTS DH 24PC3 coveno _ 306 345 306 340 RING 324 527 GRIP 324 528 BALL HOLDER 324 526 322 812 HOLDER PLATE 984 118 939 547 301 654 1 324 605 HOLDER SPRING WASHER B RETAINING RING FOR D20 SHAFT 10 PCS TAPPING SCREW W FLANGE D5X35 GEAR COVER ASS Y INCLUD 47 NAME PLATE 307 688 OIL SEAL 322 815 SLEEVE 323 232 FELT PACKING B 690 400 BALL BEARING 6904DDPS2L 16 324 522 SLEEVE A 17 322 813 RETAINING RING 37MM 18 324 530 PUSHING BUTTON 19 317 223 PUSHING SPRING 20 878 885 O RING S 18 324 603 CHANGE LEVER 317 238 SPRING B 959 156 STEEL BALL D7 0 10 PCS 323 184 CYLINDER 323 185 SECOND GEAR 26 317 233 SPRING A 27 317 234 WASHER 28 317 235 RETAINING RING D30 29 324 525 SECOND HAMMER 30 944 486 O RING 1 20 324 523 HAMMER HOLDER 322 802 O RING B 322 805 DAMPER A 322 808 O RING C 36 324 524 322 807 DAMPER HOLDER STOPPER RING 37 324 535 STRIKER 38 322 834 O RING 1 0 16 39 324 534 PISTON 40 322 793 O RING 1 0 66 5 41 324 542 INNER COVER ASS Y INCLUD 44 46 42 322 798 PISTON PIN 43 322 799
5. Idle hammering prevention mechanism The idle hammering prevention mechanism in the Model DH 24 is different from that of conventional rotary hammers When the drill bit is lifted from the work surface on completion of drilling the second hammer moves to the position indicated by the continuous lines in Fig 4 and the protruding lip portion at the tip of the striker is gripped by O ring C mounted between the hammer holder and the damper holder In this state should the piston continue to move so that the small piston vent hole is blocked by the inner wall of the cylinder the air in the air chamber will pass through the large piston vent hole and be released through the air escape slot and large cylinder vent hole provided on the inner wall of the cylinder Accordingly there is no change in the air pressure within the air chamber and movement of the striker idle hammering operation is prevented The gripping force of O ring C on the striker is so small in comparison with the conventional mouth system that practically no pressing force at all is required to restart the hammering operation Striker Air escape slot_ Large piston vent hole Small piston vent hole N Piston EXCESS gt Moving distance Front cap Cylinder Second hammer Wes _ EY Lo j 1 First gear
6. MODEL 24 Hitachi Power Tools TECHNICAL DATA ROTARY HAMMER Fe DH 24PC3 SERVICE MANUAL LIST No E489 May 2005 SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT Throughout this TECHNICAL DATA AND SERVICE MANUAL symbols are used in the place of company names and model names of our competitors The symbols utilized here are as follows Competitors Symbols Utilized Company Name Model Name BOSCH GBH2 24DSR N 5 T PRODUCT NAWE uuu u 1 2 MARKETING OBJECTIVE neue Xx Dax m xxu S uci x cina x vs i3 Zr ux x YE ned a adt YE 1 3 APPLICATIONS 1 4 SELLING POINTS uu UEM 2 4 1 Selling Point Descriptions ________ __ 3 5 SPECIFICALIONS ne san suu cit terne 4 SSC IMG AU OMS een 4 5 2 Optional ACCOSSOLOS cuius 5 6 COMPARISONS WITH SIMILAR PRODUCTS 11 6 1 Specification Comparisons eee s minaires scene comternc hit es 11 6 2 Driling Speed cde qt uide 12 6 3 Performance Comparison sacs
7. user read and dosi ur instruction manual AVERTISSEMENT de r dure risque icit lire et comprendre ie node d emploL 14 8 REFERENCE MATERIAL 8 1 Lubrication It is not necessary to replenish the grease lubricant unless the tool is disassembled or there is grease leakage due to a defective seal Special grease is used in the striking section Should the striking section within the gear cover be disassembled carefully remove the old grease from all parts and on reassembly inject 45 g 1 6 oz of new grease into the gear cover and 5 g 0 2 oz into the groove of the inner cover Be careful not to exceed the designated amount of grease Excessive grease will reduce striking efficiency Apply Molub Alloy No 777 1 grease to the pin portion of the change lever 8 2 Tool Structure e Transmission of rotation Unlike conventional hammer drills the armature shaft in the Model DH 24 is in parallel with the tool shaft the same structure that is employed in most impact drills This structure was adopted in order to make the Model DH 24PC3 more compact for easier handling and operation Thus the appearance of the Model 24 is similar to that of an impact drill The rotation of the armature is transmitted to the second shaft via the first gear and causes it to rotate The second pinion provided on the second shaft engages the second gear mounted on the outer circumference of the cylinder The cylinder is
8. 351 13 13 16 360 14 3 16 360 14 3 16 Dimension Height 198 7 51 64 198 7 51 64 205 8 1 16 197 7 3 4 Width 78 3 1 16 69 2 23 32 84 3 5 16 76 3 Forward reverse changeover switch Push button type Push button type Lever type Lever type One push type One push type One push type One push type Function Double layer x molded handle Note 1 Mark O Equipped Mark x Not equipped 2 Weight excludes cord and side handle LESS 6 2 Drilling Speed Comparison Drilling speed varies considerably depending on the work conditions Use the factory test results shown in Fig 1 for comparison purpose only 800 0 8 HITACHI DH 24PC3 E C 600 0 HITACHI DH 24PC2 C 500 0 D 4000 O Q o e 3000 200 0 100 0 6 8 10 12 14 16 18 20 22 24 Drill bit dia mm Fig 1 Test conditions Direction Downward drilling e Pushing force 98N 10 kgf material Concrete panel with a compression strength of 2 352 240 kgf cm SE 6 3 Chiseling Performance Comparison Chiseling performance varies considerably depending on the work conditions Use the factory test results shown in Fig 2 for comparison purposes only Voltage Maker Chiseling amount kg 30 min supply 10 15 20 25 30 HITACHI DH 24PC3 HITACHI DH 24PC2 ld 7 PRECAUTIONS IN SALES PROMOTION In the interest of prom
9. Holder 35 can be removed from the Cylinder 24 As shown in Fig 19 insert the no hole side of stopper ring jig A J 341 into the Cylinder 24 until it contacts the end surface of the Damper Holder 35 Hold the Cylinder 24 and the end surface of stopper ring jig A J 341 with a vise and compress Damper 33 it moves a little when the Stopper Ring 36 is pressed with punch C J 341 Insert punch J 341 into the 5 mm diameter hole 2 places in the Cylinder 24 and tap the outside of the Stopper Ring 36 until the Stopper Ring 36 cannot be seen from the 5 mm diameter hole 2 places to remove the Stopper Ring 36 from the groove of the inside diameter portion of the Cylinder 24 Then remove the Cylinder 24 from the vise and pull out the Stopper Ring 36 from the inside diameter portion of the Cylinder 24 with ring puller jig B J 341 being careful not to pop out the Stopper Ring 36 At reassembly replace the Stopper Ring 36 with new one as the removed Stopper Ring 36 is deformed To prevent idle hammering also replace O ring C 34 with new one at reassembly Tap with a hammer Punch C J 341 5 mm diameter hole 2 pcs O ring 1AP 20 30 Damper Holder 35 O ring C 34 Second Hammer 29 OUT w Y moi T uM 20 mail Dore O ring B 32 Damper A aoo Stopper Ring 36 Hammer Holder 31 Z Vise lt Stopper ring jig A J 341 Fig 19 DR 6 R
10. INCLUD 631 982 677 CORE BIT B 45MM INCLUD 633 982 689 GUIDE PLATE FOR CORE BIT 45MM 982 678 CORE BIT B 50MM INCLUD 635 982 690 971 794 GUIDE PLATE FOR CORE BIT 50MM 971 795 971 796 971 797 971 798 ANCHOR SETTING ADAPTER A W1 4 MANUAL ANCHOR SETTING ADAPTER A W5 16 MANUAL ANCHOR SETTING ADAPTER A W3 8 MANUAL ANCHOR SETTING ADAPTER A W1 2 MANUAL ANCHOR SETTING ADAPTER W5 8 MANUAL 971 799 ANCHOR SETTING ADAPTER W1 4 MANUAL 1 ALTERNATIVE PARTS OPTIONAL ACCESSORIES DH 24PC3 TET coveno _ 971 800 ANCHOR SETTING ADAPTER W5 16 MANUAL 971 801 ANCHOR SETTING ADAPTER W3 8 MANUAL 971 802 ANCHOR SETTING ADAPTER W1 2 MANUAL 971 803 ANCHOR SETTING ADAPTER W5 8 MANUAL 944 460 TAPER SHANK DRILL D11X100 944 461 TAPER SHANK DRILL 012 3 110 993 038 TAPER SHANK DRILL BIT D12 7X110 944 462 SHANK DRILL BIT D14 3X110 944 500 TAPER SHANK DRILL BIT D14 5X110 944 463 SHANK DRILL BIT D17 5X120 944 464 SHANK DRILL BIT D21 5X140 320 859 SYRINGE BLOW OUT BULB 303 046 BULL POINT SDS 250MM ROUND SHANK TYPE 303 044 CHEMICAL ANCHOR ADAPTER SDS 12 7MMX90L 303 045 CHEMICAL ANCHOR ADAPTER SDS 19 0MMX100L 303 334 CHUCK HANDLE 302 976 ANCHOR SETTING ADAPTER SDS W1 4X260L 930 515 CHUCK WRENCH 10G 302 975 ANCH
11. 36 Stopper ring jig A J 341 Fig 22 20 3 Reassembly of the change lever Press the Pushing Button 18 deeply into the hole of the Change Lever 21 Adjust the Change Lever 21 to the position shown in Fig 23 of the Gear Cover Ass y 10 and press it hard Then move the Change Lever 21 to the hammering only position T mark Change Lever 21 Pushing Button 18 Fig 23 4 Press fitting the first gear Press fit the First Gear 54 aligning with the shaft end surface of the Second Shaft 52 After press fitting the First Gear 54 check that the inside ring of the Reciprocating Bearing 53 turns smoothly b Reassembly of the oil seal Prior to reassembly apply grease to the inner circumference of the Oil Seal 12 However do not apply grease to its outer circumference Also when press fitting the Oil Seal 12 ensure that it is straight and level 6 Reassembly of the internal pressure adjustment mechanism Push Felt Packing A 44 Valve 45 and Felt Packing B 46 in the Inner Cover Ass y 41 as far as they will go in this order Valve 45 Inner Cover Ass y 41 Fig 24 Ld c 7 Mounting piston Mount the Piston 39 shown in Fig 25 Inner Cover Ass y 41 Piston 39 Striker 37 tse ee woe pe wae ef aria erie fark e b ata Second Shaft 52 First Gear 54 Reciprocating Bearing 53 Fig 25 8 Reass
12. Code No 316656 Groove digging and edging hammering only O 15 Cold chisel Cutter SDS plus chank SDS plus shank Code No 316657 Code No 316658 G Grooving hammering only gt Grooving chisel SDS plus shank Code No 316659 H Drilling hole and driving screws rotation only e Drill chuck chuck adapter G special screw and chuck wrench B 77 W Special screw 13 mm 1 2 Drill chuck Chuck adapter G 13VLRB D SDS plus shank Note If the tool is to be used for loosening screws open the three jaws of the drill chuck and securely fix the drill chuck to chuck adapter G with the special screw a left hand threaded M6 screw when Chuck wrench mounting the drill chuck onto chuck adapter G Part name Code No Chuck adapter G for SDS plus shank system 303623 13 mm 1 2 Drill chuck 13VLRB D with chuck wrench 321814 C Special screw M6 left hand threaded 981122 1 Cross recessed head Phillips bit 2 Slotted head minus bit Overall length 70 mm Overall length 50 mm For use with cross recessed head Phillips screw For use with slotted head minus screw LES Stamped bit No Tip thickness Bit tip thickness Code No Applicable screw dia mm Applicable screw dia mm 08 4 _ No3 955655 6 8 Driling hole rotation only For drilling holes in steel and wood Drill chuck 13VLD D Chuck adapt
13. ESSORIES NO CODE NO DESCRIPTION 324 555 24 324 548 SIDE HANDLE 303 709 DEPTH GAUGE 310 331 DEPTH GAUGE FOR USA CAN 981 840 OPTIONAL ACCESSORIES CO GREASE A FOR HAMMER HAMMER DRILL 30G 308 471 GREASE FOR HAMMER HAMMER DRILL 70G 980 927 GREASE FOR HAMMER HAMMER DRILL 500G 306 885 DUST COLLECTOR B ASS Y INCLUD 605 613 986 802 986 803 DUST COLLECTOR ASS Y DUST COVER INCLUD 606 612 986 804 SEAL COVER 948 310 RETAINING RING FOR D30 SHAFT 958 063 WASHER 959 150 986 805 STEEL BALL D6 35 10 PCS OUTER RACE 986 806 SOCKET 306 910 SOCKET ADAPTER B 971 787 DUST CUP 931 844 321 814 STOPPER 995 344 321 813 971 511Z 971 512Z 944 477 DRILL CHUCK 13VLRB D INCLUD 617 FLAT HD SCREW A LEFT HAND M6X25 DRILL CHUCK 13VLD D 4 DRIVER BIT A NO 2 25L 4 DRIVER BIT A NO 3 25L 982 684 982 685 982 672 982 673 982 674 COTTER CENTER PIN A 109L FOR CORE BIT D32 38 CENTER PIN B 104L FOR CORE BIT D45 90 CORE BIT A 25MM CORE BIT A 29MM CORE BIT A 32MM INCLUD 627 982 686 GUIDE PLATE FOR CORE BIT 32MM 982 675 CORE BIT A 35MM INCLUD 629 982 687 GUIDE PLATE FOR CORE BIT 35MM 982 676 982 688 CORE BIT A 38MM GUIDE PLATE FOR CORE BIT 38MM
14. OR SETTING ADAPTER SDS W5 16X260L 303 621 ANCHOR SETTING ADAPTER SDS W3 8X160L 302 974 ANCHOR SETTING ADAPTER SDS W3 8X260L 302 979 ANCHOR SETTING ADAPTER SDS W1 4X260L 302 978 ANCHOR SETTING ADAPTER SDS W5 16X260L 303 622 ANCHOR SETTING ADAPTER SDS W3 8X160L 302 977 ANCHOR SETTING ADAPTER SDS W3 8X260L 303 332 HAMMER DRILL CHUCK SET 13MM INCLUD 668 669 303 334 CHUCK HANDLE 303 335 RUBBER CAP 303 617 TAPER SHANK ADAPTER SDS PLUS NO 1 303 618 TAPER SHANK ADAPTER SDS PLUS NO 2 303 619 SHANK ADAPTER SDS PLUS 303 620 SHANK ADAPTER SDS PLUS 981 122 SPECIAL SCREW M6X22 303 625 CORE SHANK SDS PLUS 25 38MM 1051 303 626 BIT SHANK SDS PLUS 25 38MM 3001 303 627 BIT SHANK SDS PLUS 45 90MM 3001 303 624 CHUCK ADAPTER D SDS PLUS 321 825 DRILL CHUCK AND ADAPTER SET 303 623 CHUCK ADAPTER SDS PLUS 306 369 DRILL BIT SLENDER SHAFT D3 4X90 306 368 DRILL BIT SLENDER SHAFT D3 5X90 306 370 ADAPTER FOR SLENDER SHAFT SDS PLUS 6 ALTERNATIVE PARTS Printed in Japan 5 05 050520N Hitachi Co Ltd Tokyo Japan
15. SA CAN INA IND SYR KUW SIN HKG 955 203 BRUSH HOLDER 324 537 INTERNAL WIRE A BROWN FOR USA CAN INA IND SYR KUW SIN HKG 999 072 CARBON BRUSH AUTO STOP TYPE 1 PAIR 994 273 NOISE SUPPRESSOR EXCEPT FOR USA CAN INA IND SYR 981 373 TUBE D 953 327 CORD ARMOR D8 8 938 051 CORD ARMOR D10 1 937 631 984 750 CORD CLIP TAPPING SCREW W FLANGE 04 16 LABEL WEEE 324 554 HANDLE COVER 301 653 TAPPING SCREW W FLANGE D4X20 BLACK 500 3902 500 4462 CORD CORD ARMOR D8 8 CORD ARMOR D8 8 FOR GBR 230V 500 4652 CORD ARMOR 08 8 FOR GBR 110V 500 2352 CORD ARMOR 08 8 FOR INA 500 2452 CORD ARMOR 010 1 FOR SYR NO 57 58 59 60 61 62 62 62 63 64 65 65 65 66 67 68 69 69 70 71 72 72 73 74 75 76 77 78 79 80 80 81 82 83 84 85 86 86 86 86 86 86 05 5 500 2492 500 4082 CORD CORD ARMOR D8 8 FOR USA CAN CORD ARMOR D8 8 FOR AUS NZL ALTERNATIVE PARTS KUW SIN HKG FOR CORD PARTS DH 24PC3 eoe _ 500 4247 CORD ARMOR 08 8 FOR KUW SIN 86 500 4567 CORD CORD ARMOR 08 8 FOR CHN 86 500 4407 CORD CORD ARMOR 08 8 FOR 4 ALTERNATIVE PARTS 5 05 STANDARD ACC
16. WASHER 44 324 543 FELT PACKING 45 324 545 46 324 544 FELT PACKING B 47 323 249 PINION SLEEVE 48 318 522 LOCK PLATE 49 323 181 SECOND PINION 50 323 182 CLUTCH SPRING 51 324600 CLUTCH 2 ALTERNATIVE PARTS 5 05 PARTS 323 180 DH 24PC3 T coveno _ SECOND SHAFT 324 533 RECIPROCATING BEARING 322 797 FIRST GEAR 322 795 SPACER 626 VVM 322 816 BALL BEARING 626VVC2PS2L FELT PACKING 876 796 O RING P 22 322 818 PACKING WASHER 608 DDM BALL BEARING 608DDC2PS2L 982 631 360 720U WASHER A ARMATURE ASS Y 110V 120V INCLUD 60 61 66 360 720E ARMATURE 220V 230V 360 720F ARMATURE 240V 324 531 FAN GUIDE 961 672 340 635C HEX HD TAPPING SCREW D4X50 STATOR 110V 120V 340 635E STATOR 220V 230V 340 635F STATOR 240V 608 VVM BALL BEARING 608VVC2PS2L 324 604 324 553 HITACHI PLATE HOUSING 324 549 CHOKE COIL A BROWN EXCEPT FOR USA CAN GBR 110V INA IND SYR KUW SIN HKG 324 550 CHOKE COIL A BROWN FOR GBR 110V 324 536 322 853 SWITCH 1P PILLAR TYPE PUSHING BUTTON 324 551 CHOKE COIL A BLUE EXCEPT FOR USA CAN GBR 110V INA IND SYR KUW SIN HKG 324 552 CHOKE COIL A BLUE FOR GBR 110V 324 538 999 041 INTERNAL WIRE A BLUE CARBON BRUSH 1 PAIR FOR U
17. ard 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 and 166 mm and cannot be used with any longer bits When using a drill bit 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 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 of maintenan
18. ce 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 24 72 2 27 32 16 5 8 Drill bit T a length w mm Grip the main body side Drill bit AN oT mm ru Tee Socket adapter B Seal cover a Retaining ring put cover for 030 shaft Outer race Washer Steel Ball D6 35 Fig 13 Dust collector B structure D5 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 9 1 Disassembly 1 Disassembly of the striking mechanism section e Push Second Hammer 29 in the main body with a drill bit or screwdriver to release the Striker 37 from O ring C 34 Pressing the Pushing Button 18 move the Change Lever 21 to the hammering only mode T mark Be sure to keep pressing the Pushing Button 18 when operating the Change Lever 21 e Loosen the four Tapping Screws W Flange D5 x 35 9 and remove the Gear Cover Ass y 10 The Inner Cover Ass y 41 and the Housing 68 are loosely fitted together Attempting to pull them out first could cause the Armature 62 to be pulled out at the same time causing damage to the Carbon Brushes Auto Stop Type 74 Remove Spring B 22 f
19. coupled to the second gear by means of a slip mechanism and they rotate together The end of the cylinder also functions as the drill bit retainer The cylinder is key connected to the inserted drill bit by means of two key rails and transmits rotation to the drill bit A steel ball is used to prevent the bit from coming off e Piston reciprocating mechanism In conventional rotary hammers a piston is caused to reciprocate by a connecting rod and crank shaft and the crank shaft and the cylinder axes are at right angles to each other Accordingly the armature shaft and the cylinder axes are also at right angles to each other the Model DH 24PC3 through adoption of a spiral drive system a mechanism using a reciprocating bearing a more compact design has been achieved by arranging the armature shaft in parallel with the cylinder axis Referring to Fig 3 the armature s rotation is transmitted to the second shaft via the first gear The second shaft s rotation is then transmitted through a spline to the clutch which engages with a reciprocating bearing and causes it to rotate However as illustrated circular grooves on the inner race of the reciprocating bearing are positioned on an angle of inclination with relation to the second shaft The rotation of the inner race and the shaft causes the angle of inclination to change regularly forward and back with relation to the second shaft and produces a rocking motion in the outer race of th
20. de screwdriver into the windows c S 5 near the terminals and pull out the lead wires Fig 32 Wiring of reversing switch 9 6 Insulation Tests On completion of disassembly and repair measure the insulation resistance and conduct the dielectric strength test Insulation resistance 7 M or more with DC 500 V megohm tester Dielectric strength 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 120 V except U K products 9 7 No load Current Values After no load operation for 30 minutes the no load current value should be as follows Current A max 10 STANDARD REPAIR TIME UNIT SCHEDULES Handle Cover Switch Cord Armor Cord Housing Stator Armature Ass y O ring P 22 Ball Bearing 608DD Ball Bearing 608VV Front Cap Second Hammer Cylinder Grip O ring 1AP 20 Second Gear Ball Holder Hammer Holder Spring A Holder Spring O ring B Steel Ball D7 0 Damper A O ring C Damper Holder Change Lever O ring S 18 Gear Cover Pushing Button Oil Seal Ball Bearing 6904DD Sleeve A Striker Inner Cover O ring Ass y Piston Pinion Sleeve O ring Lock Plate Piston Pin Second Pinion Washer C x 2 Clutch Spring Clutch Second Shaft Reciprocating Bearing First Gear Ball Bearing 626VV ey gee Hitachi Power Tools LIST NO E489 ELECTRIC TOOL PARTS LIST ROTARY HAMMER 2005
21. e reciprocating bearing Finally a rod extending from the outer race of the reciprocating bearing is connected to the piston by a piston pin and causes the reciprocating motion of the piston Piston pin Piston Second gear Armature Tool shaft Motor shaft Cylinder Key rail 2 pcs SS Second shaft First gear ATK E N Clutch Reciprocating bearing Ring groove t Fig 3 46 Hammering function The piston reciprocates within the cylinder to move the striker in the same manner as in conventional rotary hammers the piston reciprocates the changing air pressure inside the air chamber between the piston and the striker causes the striker to move and repeatedly 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 hammering action As any air leakage from the air chamber weakens the air cushion effect and reduces impact absorption the O ring mounted on the striker is extremely important to seal the air Although a special rubber material is utilized in construction of the O ring to make its effective service life as long as possible wear cannot be fully avoided Accordingly it is recommended that the O ring be replaced approximately once a year depending on the frequency of usage of the tool
22. e special grease in the gear cover and 5 g in the inner cover groove Apply Molub Alloy No 777 1 grease to the pin portion of the Change Lever 21 Apply Molub Alloy No 777 1 grease to the contact portion between the Clutch 51 and the Lock Plate 48 Fill Molub Alloy No 777 1 grease in the ball portion of the Reciprocating Bearing 53 Apply Hitachi Motor Grease No 29 to the O ring 5 18 20 for the Steel Ball 07 0 23 and the Change Lever 21 2 Mounting the Cylinder 24 Mount the Second Hammer 29 O ring 1AP 20 30 Hammer Holder 31 O ring B 32 Damper A 33 new O ring C 34 and Damper Holder 35 in the Cylinder 24 Push the new Stopper Ring 36 in the Cylinder 24 then push in the hole side of stopper ring jig J 341 on it as shown in Fig 22 Push the upper end surface of stopper ring jig A J 341 with a hand press to fit the Stopper Ring 36 in the groove of the inside diameter portion of the Cylinder 24 Check that the Stopper Ring 36 is securely fitted in the groove of the inside diameter portion of the Cylinder 24 viewing from the 5 mm diameter hole 2 pcs on the Cylinder 24 5 diameter hole 2 pcs O ring 1AP 20 30 Hammer Holder 31 O ring C 34 Second Hammer 29 GRR Sian Ar 1 2777272 24 4 poe I i Damper Holder 35 i a Z DENS done oy pot Hand press O ring B 32 Damper 33 Stopper Ring
23. embly of the gear cover After reassembly as shown in Fig 26 ensure that the Change Lever 21 is adjusted to the hammering only position Engage the claws of the Clutch 51 and the Reciprocating Bearing 53 each other Align the wing portion of the Lock Plate 48 horizontally and reinstall the Gear Cover 10 so that the wing portion of the Lock Plate 48 is contained in the rail inside of the Gear Cover Ass y 10 When the Second Shaft 52 contacts the Pinion Sleeve 47 inside the Gear Cover Ass y 10 move the Change Lever 21 to the rotation and hammering mode and rotate the Grip 3 Then the Second Shaft 52 and the Pinion Sleeve 47 are engaged and the end surface of the Gear Cover Ass y 10 contacts that of the Housing 68 At this time rotate the Grip 3 to check that the rotation of the Cylinder 24 is transmitted to the armature shaft Move the Piston 39 to the top dead center End surface of the Gear Cover Ass y 10 EOUsng 69 End surface of the Housing 68 Rail in the Gear Cover Ass y 10 i EP lt ANTH Engage the claws of the Clutch 51 and the Reciprocating Bearing 53 Gear Cover Ass y 10 Position the wing portion of the Move the Change Lever 21 to the Lock Plate 48 horizontally hammering only T mark position Fig 26 Nm 9 3 Tightening Torque Tapping Screws D4 64 82
24. emoval of the gear cover and the pinion sleeve Pinch the Pinion Sleeve 471 with the pinion sleeve puller J 302 No 319265 and fix the pinion sleeve puller to a vise Pull the Gear Cover Ass y 10 to remove the Pinion Sleeve 47 from the Gear Cover Ass y 10 Figs 20 and 21 Hold with a vise Gear Cover Ass y 10 Pinion Sleeve 47 Pinion sleeve puller J 302 Fig 20 EE ME E Claws of pinion sleeve puller fumma oral fs Adjuster Pinion Sleeve 47 Pinion sleeve puller J 302 Fig 21 9 2 Reassembly can accomplished following disassembly procedure in reverse However special attention should be given to the following items 1 Application of lubricant Apply special grease for hammer and hammer drill to the O ring 1 AP 20 30 and B 32 for the Hammer Holder 31 Damper A 33 O ring C 34 O ring I D 16 38 for the Striker 37 outer circumference of the Striker 37 inner and outer circumference of the Piston Pin 42 outer circumference of the Piston 39 Reciprocating Bearing 53 Reciprocating Bearing 53 rotary shaft of the Second Shaft 52 Second Pinion 49 rotary shaft clutch claw of the Cylinder 24 inner circumference of the metal of the Inner Cover Ass y 41 Second Hammer 29 and the lip portion of the Oil Seal 12 Fill 45 g of th
25. er D SDS plus shank Chuck wrench NOTE The 13VLD D drill chuck and chuck adapter D cannot be used for reverse rotaion If reverse rotation is to be used for loosening screws use the plus bit Bit No 2 described below by attaching it directly to Part name chuck adapter D Chuck adapter D for SDS plus shank type 303624 321813 13 mm 1 2 Drill chuck 13VLD D with chuck wrench J Drilling screws rotation only Plus driver bit overall length 25 mm for cross recessed head screws is i Chuck adapter D Bit No No 3 9715127 SDS plus shank Grease for electric impact drill e Containing 500 g 17 64 oz Code No 980927 gt Containing 30 g 1 06 oz Code No 981840 70 g 2 5 oz Code No 308471 q __ Dust cup Dust collector B ass y Code No 971787 Code No 306885 L Dust cup dust collector B tO 6 COMPARISONS WITH SIMILAR PRODUCTS 6 1 Specification Comparisons Maker Model HITACHI HITACHI C DH 24PC3 DH 24 2 24 15 16 24 15 16 24 15 16 24 15 16 Capacity 13 1 2 13 1 2 13 1 2 13 1 2 32 1 14 0 1 100 5 3 Ibs No load rotation speed 01 150 0 1 150 0 870 2 0 Full load impact rate in 0 4 600 0 4 600 0 4 400 0 4 500 Weight Kg 2 4 5 3 8 2 5 5 5 16 2 4 5 3 lbs 2 4 5 3 16 Length 351 13 13 16
26. h is also a fully dust proofed type to prevent dust and chips from entering the handle section and causing possible operational trouble or a break down of the insulation Speed control The Model DH 24PC3 is equipped with a variable speed control switch which permits free change of the rotation speed and hamemring force When drilling in fragile materials pull the switch trigger gently for low rotation speed hammering force to achieve optimum results Note that the switch trigger cannot be pulled to the full but up to the half in the reverse drilling and the speed is about half of the forward drilling In addition the switch stopper cannot be used in the reverse drilling Jo Internal pressure adjustment mechanism An air passage is provided as shown in Fig 5 to let out air inside the gear cover and let outside air in the gear cover This passage is sandwiched between felt packings to pass only air pressure Thus variations in the internal pressure are minimized for stable hammering operation and prevention of idling and grease leakage Air passage Outside the gear cover Inside the gear cover Felt packing B Felt packing Fig 5 O Pea Inner cover 8 3 Three Mode Changeover Mechanism The change lever of the Model 24PC3 permits quick and easy changeover among the rotation and hammering rotation only and hammering only functions Each function mode i
27. he Model 24 can drill holes more comfortably and friskily with a light pushing force because the quantity of body jumping is 20 less than C 4 1 5 Internal pressure adjustment mechanism By minimizing variations in the internal pressure during operation hammering operation is stabilized In addition idling and grease leakage can be prevented 4 1 6 Non slip double layer molded gear cover The double layer molded gear cover consists of a plastic resin base covered with a soft resin to ensure ease of operation and a non slip grip during chipping 4 1 7 Non slip double layer molded handle The double layer molded handle consists of a plastic resin base covered with a soft resin to ensure a soft touch and non slip grip 4 1 8 Compact body Entire length 351 mm The Model DH 24PC3 has the same helical driving structure as the Model DH 24PC2 to make the entire length as short as possible to 351 mm The Model DH 24 has the shortest body in the class Maker Model Entire length mm r 8 5 SPECIFICATIONS 5 1 Specifications Capacity 3 4 24 mm 1 8 15 16 13 mm 1 2 32 mm 1 1 4 Voltage current and Power input W Forward 0 to 1 150 min Reverse 0 to 550 min Rotation Full Ful load to 890 min Housing Enclosure cover Gear cover Glassfiber reinforced polyamide resin cool gray and black 2 4 kg 5 3 Ibs 4 5 CT 9 9 Ibs otandard accessor
28. iameter 32 35 38 mm 1 1 4 1 3 8 1 1 2 Code No 982684 Center pin Core bit outer diameter 45 50 mm 1 25 32 2 Code No 982685 2 Core bit outer diameter mm Core bit outer diameter mm Code No 32 1 1 4 982686 50 21 982690 2 35 1 3 8 982687 8 38 1 1 2 98288 45 1 25 32 982689 3 Core bit with guide plate The guide plate is not supplied with 25 mm 31 32 and 29 mm 1 5 32 outer diameter core bits seve awe 4128829 _ 2 520 ws sen one _ moy EE _ 4 Core bit shank SDS plus shank Core bit outer diameter 25 38 mm Overall length 105 mm 4 1 8 Code No 303625 Core bit shank A 31 32 1 1 2 length 300 mm 11 52 64 Code No 303626 m Go ms Overall length 300 mm 11 52 64 Code No 303627 D Bolt placing operations with chemical anchor rotation hammering 12 7 1 2 Chemical anchor adapter SDS plus shank 19 3 4 Chemical anchor adapter SDS plus shank Standard sockets available on the market 12 7 mm 1 2 Chemical anchor adapter 303044 19mm 3 4 Chemical anchor adapter 303045 E Crushing operations hammering only CL us Bull point round type Square bull point SDS plus shank SDS plus shank Code No 303046
29. ies 1 Plastic case 2 Side handle 3 Depth gauge Glassfiber reinforced polyamide resin green and black Weight excludes cord and side handle 5 2 Optional Accessories A Drilling anchor holes rotation hammering e Drill bit slender shaft asst em 1 Drill bit slender 2 Adapter for slender shaft SDS plus shank Drill bit slender shaft Adapter for slender shaft Effective length mm Overall length mm Code No 3 4 1 8 45 1 25 32 90 3 17 32 306369 306370 3 5 9 64 45 1 25 32 90 3 17 32 306368 e Drill bit taper shank 5 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 11 7 16 944460 12 3 31 64 944461 12 7 1 2 993038 Morse taper 303617 14 3 9 16 944462 No 1 944477 14 5 73 128 944500 17 5 11 16 944463 21 5 27 32 944464 Morse taper 2 303618 CodeNo Partname Partname Ataper Ataper 9 Taper shank adapters A taper or B taper is provided as 303620 optional accessory but drill bit is not provided e 13 mm hammer drill chuck For drilling operations when using a straight shank bit for impact drilling with a rotary hammer Straight shank bit for 13 mm 1 2 hammer drill Chuck wrench impact drills chuck SDS plus shank 13 mm 1 2 hammer drill ch
30. ing work General internal wiring can be accomplished by referring to paragraphs 9 4 and 9 5 The following are special instructions for switch connection 1 Wiring of reversing switch Insert the lead wire black coming from the stator into the terminal 4 of the reversing switch and the lead wire white into the terminal 3 as shown in Fig 31 Insert the lead wire brown coming from the carbon brush or choke coil into the terminal 2 and the lead wire 5 blue into the terminal 1 After insertion pull each lead 5 wire slightly to check that the lead wires do not come off E en To disconnect the lead wires insert a small flat blade Fig 31 Wiring of reversing switch D D O O x S iz m screwdriver into the windows near the terminals and pull out the lead wires 2 Wiring of speed control switch Insert each cord into the terminal 11 and terminal 21 of the speed control switch as shown in Fig 32 and tighten the screw tightening torque 0 6 0 2 Nem 6 2 kgf cm 5 2 1 7 in Ibs Insert the lead wire gray coming from the stator into the terminal M1 and the lead wire red into the terminal M2 Insert each lead wire white coming from the noise suppressor into the terminal C1 and C2 PA Be After insertion pull each lead wire slightly to check the a 5 lead wires do not come off To disconnect the lead wires 2 D insert a small flat bla
31. ion portion is meshed ocking claw of second pinion rotation transmitted 9 EAS Cylinder Pinion sleeve portion is separated rotation stopped Reciprocating bearing Change lever pin Fig 8 Dd 4 9 The Model 24 has a neutral mode used for positioning a tool such as a flat chisel Adjust the change lever to a position halfway between hammering only 17 mark and rotation and hammering 8 marks Engagement between the pinion sleeve and the second pinion B portion in the figure and between the lock plate and the locking claw of the second pinion portion in the figure is released and the cylinder rotates freely Simply turn the grip to adjust the tool to the desired position portion is separated tool turns free Lock plate Locking claw of second pinion Second prior Second gear Cyinder SN ae cee Pinion sleeve I CA A D B portion is separated rotation stopped Fig 9 8 4 Drill Bits The chuck section is designed exclusively for the popular and widely available SDS plus shank bits as shown in Fig 10 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 Key slot two pieces Section A Shape of SDS plus shank bit Key rail 2 pcs Ball holder Steel bal
32. l Chuck section Fig 10 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 Figure 11 shows the regrinding angle Regrinding angle of drill bit Rotation direction 60 1 2 a 25 b Section A B Fig 11 a OF 8 5 Chuck Section The tool retainer is structured as shown in Fig 12 The tip of the tool retainer is covered with the front cap made of rubber to prevent dust and chips from getting inside The steel ball falls into the round groove of the bit to prevent the tool from coming off and the two key rails transmit the rotation torque To mount the bit push the bit in the tool retainer as far as it will go Pushing lightly turn the bit until it is caught At this position push the bit in as far as it will go sliding the grip is not required for mounting the bit To remove the bit slide the grip backward to the full and remove the bit Grip holder Washer Steel bal Front per Hy D i MM See TERM AEN E y kgs ST VN is Cylinder Stopper ring Key rail 2 pcs Holder plate y rail 2 pcs Fig 12 8 6 Dust Collector B When drilling holes overhead dust collector B can be mounted on the Model 24PC3 to prevent dust and chips from falling downw
33. llation of seating display stands and partitions e Other civil engineering construction and repair work 4 SELLING POINTS Class top drilling speed e More comfortable and frisky drilling e New and powerful design Compact body Non slip double layer molded handle 7 Non slip double layer Internal pressure molded gear cover adjustment mechanism 4 1 Selling Point Descriptions 4 1 1 Selectable from 3 modes rotation hammering rotation only and hammering only The new Model DH 24PC3 is a 3 mode type rotary hammer based on the Model DH 24PB3 rotary hammer drill 2 mode type It features the hammering only mode in addition to the rotation hammering mode and the rotation only mode The hammering only mode is available not only for light duty chipping by means of bull points but also for groove digging and edging by means of cold chisels and cutters for various applications 4 1 2 Variable lock mechanism With the variable lock mechanism the tip angle of a tool such as a cold chisel or a cutter is selectable from 36 levels and can be locked in the hammering only mode Thus the tip of a tool can be properly positioned according to the application 4 1 3 Class top drilling speed The drilling speed of the Model DH 24PC3 is 1 4 times higher than B and 1 2 times higher than C thanks to the efficient transmission of the hammering energy 4 1 4 More comfortable and frisky drilling T
34. o the rotation hammering mode and the rotation only mode The Model DH 24PC3 is equipped with the variable lock mechanism that is available in the hammering only mode With the variable lock mechanism the tip angle of a cold chisel or other tool is selectable from 36 levels The main features of the Model DH 24PC3 are as follows 1 Class top drilling speed 2 More comfortable and frisky drilling 3 Long service life and high durability thanks to the internal pressure adjustment mechanism 4 5 Non slip double layer molded handle and gear cover New and powerful design aiming iF design award 3 APPLICATIONS 1 Rotation and hammering function 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 3 Hammering only function Light duty chiselling of concrete Groove digging and edging Typical applications e Air conditioning Installation of air conditioners water coolers and heaters and air ducts e Piping and plumbing Installation of gas water and sanitary facilities e Electrical work Installation of light fixtures and various electric appliances e Interior decoration Insta
35. ool retainer Slide the Grip 3 fully in the arrow direction as shown in Fig 17 and remove the Front 1 Pulling the Grip 3 as shown in Fig 18 remove the Stopper Ring 2 with a retaining ring puller Then the Grip 3 Ball Holder 4 Steel Ball D7 0 23 Holder Plate 5 Holder Spring 6 and Washer 7 can be removed from the Cylinder 24 Grip 3 lt Front Cap 1 Fig 17 Holder Plate 5 Steel D7 0 23 Holder Spring 6 EPN ET Washer B 7 Stopper Ring 2 Ball Holder 4 Grip 3 Fig 18 4 Removal of the cylinder and second gear slip mechanism section Remove the Gear Cover Ass y 10 from the Inner Cover Ass y 41 and remove the entire tool retainer Remove the Retaining Ring for 020 Shaft 8 with a retaining ring puller Stand the Gear Cover Ass y 10 in this state and pull out the Cylinder 24 from the Gear Cover Ass y 10 with a hand press Then the Sleeve 13 can be removed from the Cylinder 24 Remove the Retaining Ring D30 28 from the Cylinder 24 with a retaining ring puller Then the Second Gear 25 Spring A 26 and Washer A 27 can be removed from the Cylinder 24 b Removal of the cylinder and the second hammer Hemove the Stopper Ring 36 from the inside diameter portion of the Cylinder 24 Then the Second Hammer 29 O ring 1AP 20 30 Hammer Holder 31 O ring B 32 Damper A 33 O ring C 34 and Damper
36. oting the safest and most efficient use of the Model 24PC3 Rotary 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 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 Rotary Hammer 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 The Model 24PC3 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 tool For Australia and New Zealand CAUTION eRead thoroughly HANDLING INSTRUCTIONS before use For the U S A and Canada WARNING e To reduce the of injury
37. oved forward at the back end of the lock plate Engagement between the clutch and the claws of the reciprocating bearing is released portion in the figure Thus no rotation is transmitted to the reciprocating bearing and hammering is stopped On the other hand the pinion sleeve engages with the second pinion B portion in the figure and so the rotation is transmitted to the pinion sleeve for rotation only function Claw of reciprocating bearing _ A portion is separated hammering stopped Clutch claw Second pinion HH PinionSleeve pa SERS Sea x _ Lock plate rear end portion Change lever pin Lock plate front end portion portion is meshed N rotation transmitted Reciprocating bearing Fig 7 3 Hammering only Fig 8 Adjust the change lever to hammering only 5 mark The second pinion is moved to the motor side by the pin of the change lever Engagement between the pinion sleeve and the second pinion is released and no rotation is transmitted B portion in the figure The lock plate is moved to the motor side by spring B and engaged with the locking claw of the second pinion to lock the cylinder rotation C portion in the figure On the other hand the clutch engages with the reciprocating bearing for hammering only function portion in the figure C portion meshed tool locked Lock plate Locki f d pini Second pin
38. rom the rails in the Gear Cover Ass y 10 as shown in Fig 14 Pull out the Second Pinion 49 Clutch Spring 50 Clutch 51 and the Lock Plate 48 these parts are sandwiched by means of the Lock Plate 48 as a unit as shown in Fig 15 from the end of the Second Shaft 1521 Turn the Reciprocating Bearing 53 so that the Piston 39 is moved to its maximum upper position Inner Cover Ass y 41 side The arm of the Reciprocating Bearing 53 can then be disconnected from the Piston Pin 42 and the Second Shaft 52 and the components mounted on it can be removed from the Inner Cover Ass y 41 as a unit Remove the First Gear 54 from the Second Shaft 52 with a bearing puller Then take off the Reciprocating Bearing 53 At this time take care not to damage the end surface of the Second Shaft 52 because the First Gear 54 is press fitted in alignment with the 9 mm diameter end surface of the Second Shaft 52 Clutch 51 Clutch Spring 50 w gt Lock Plate 48 Pinion Sleeve 47 Spring B 22 Gear Cover Ass y 10 Second Pinion 49 Fig 14 Fig 15 26 2 Disassembly of the Change Lever As shown in Fig 16 pressing the Pushing Button 18 hard turn the Change Lever 21 45 counterclockwise from the hammering only position mark Pry out the Change Lever 21 at this position Change Lever 21 Pushing Button 18 3 Disassembly of the t
39. s explained below When operating the change lever be sure to continue pressing the pushing button 1 Rotation and hammering Fig 6 Adjust the change lever to rotation and hammering T 8 marks Armature rotation is transmitted to the first gear and second shaft and then to the clutch via the spline of the second shaft Claws on the end surface of the clutch engage with matching claws of the reciprocating bearing A portion in the figure to convert the rotation into reciprocating motion Three claws on the tip of the second shaft engage with matching three claws of the pinion sleeve all the time and the second shaft rotation is transmitted to the pinion sleeve Then claws on the large dia portion of pinion sleeve engage with the second pinion B portion in the figure and the rotation is transmitted to the second gear and the cylinder Armature Cylinder BEN gt AA Pinion sleeve Can Theree claws of second shaft x B portion is engaged Jj J rotation transmitted 77 Change lever Second pinion Second Spline of the second shaft A portion is meshed Clutch hammering transmitted First gear Heciprocating bearing Fig 6 20 2 Rotation only Fig 7 Adjust the change lever to rotation only 8 mark The lock plate is moved forward by the pin of the change lever and the clutch is m
40. uck Including chuck wrench 303332 Chuck wrench 30334 Rubber cap Anchor setting hammering only Anchor setting bar to permit anchor setting operation with the rotary hammer Anchor setting bar w _ Anchor setting adapter SDS plus shank W 1 4 Anchor setting adapter A 302976 W 1 4 Anchor setting adapter B 302979 W 5 16 Anchor setting adapter A 302975 W 5 16 Anchor setting adapter B 302978 W 3 8 Anchor setting adapter A 303621 W 3 8 Anchor setting adapter B 303622 W 3 8 Anchor setting adapter A 302974 W 3 8 Anchor setting adapter B 302977 Internal cone type External cone type Anchor setting bar for manual setting SSS Anchor setting adapter 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 hammering e Center pin core bit core bit shank and guide plate bp 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 d
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