Model DB 3DL2 CORDLESS DRIVER DRILL
Contents
1. Charging time may vary depending on the type of charger used A OCULI 0 3 to 2 9 Num Slip torque to 30 kgf cm to 26 in Ibs Battery o Q O C Tz C Q 2 Comparison of Drilling and Fastening Performance per Charge Superior specifications Working capacity Drilling Type of work 750 T1 0 3 64 wi 2 D 2 5mm 13 64 HSS drill bit A lt High speed gt Wood screw 38 mm 1 1 2 American pine Z Low speed mm t6 w Machine screw M 5 1 5 gt HITACHI DB 3DL2 1000 i High speed NE Working Capacity Without Number of holes or fasteners per charge With Number of machine screws fastened per charge The above table shows an example of test data obtained using the standard battery for this tool As actually measured values listed in the above table may vary depending on sharpness of the drill bit workpiece hardness particularly in wood materials moisture content of wood charging condition operator skill etc This data should therefore only be used as a comparative guide PRECAUTIONS ON SALES PROMOTION 1 Safety Instructions In the interest of promoting the safest and most efficient use of the Model DB 3DL2 Cordless Driver Drill by all of our customers it is very important when concluding a sale that the salesperson carefully ensure that the buyer seriously recognizes the importance2. OPTIONAL ACCESSORIES ITEM CODE NO DESCRIPTION USED REMARKS 326 665 HOLSTER 992 670 DRIVER B NO 1 50L 992 672 DRIVER NO 3 50L 992 675 DRIVER B 4MM X 50 992 676 DRIVER B 5MM X 50 992 677 DRIVER B 6MM X 50 321 823 DRILL CHUCK AND ADAPTER SET 307 543 CHUCK ADAPTER 987 575 CHUCK WRENCH FOR 10VLB D 10VLR D INCLUD 608 609 m ALTERNATIVE PARTS Printed in Japan 6 10 100614N
3. Mount either of Handle A B Set 50 to Housing A B Set 33 Fit the Printed Circuit Board 45 Terminal 46 and Terminal Support 47 in the grooves of the handle Mount the Button 44 to the switch of the Printed Circuit Board 45 and close Handle A B Set 50 Tighten the Tapping Screw W Flange D4 x 20 Black 43 Mount the two Clip 49 to the groove of Handle A B Set 50 by using a flat blade screwdriver Mount either of handle A B set Printed Circuit Board 45 Button 44 Terminal 46 Terminal Support 47 9 Mounting Guide Sleeve A Put the Steel Ball D3 5 11 in the hole of the Fit the retaining ring in the groove of the socket socket Mount Guide Sleeve A 6 the Guide Spring 5 and Washer D 4 in sequence Fit the Retaining Ring 3 in the groove of the socket by using J295 jigs A and B for retaining ring as illustrated l Push down uu Retaining Ring 3 J295 B NOTE Be sure to replace the Retaining Or ERA ring Ring 3 with a new one because the Retaining Ring 3 may be deformed when removed Guide Sleeve A 6 may come off if the deformed for retaining ring Washer D 4 J295 jig A Retaining Ring 3 is used again r WL TH WOW 1 Z 10 Other precautions on reassembly After completing reassembly set the storage battery and check for operation 1 Check the rotating direction of Guide Sleeve A 6 Press the R
4. Carrier Planet Gear C Set Ring Gear Pinion C Planet Gear B Set Slide Ring Gear Pinion B Planet Gear A Set First Ring Gear 19 Housing A B Set LIST NO H870 LIST Hitachi Power Tools Cp ad lt A O O ad O LU gt x a X O O 2010 6 14 E1 N Q m e gt O Ws A PARTS ITEM NO CODE NO 332 759 DESCRIPTION GEAR BOX ASS Y NO ED REMARKS INCLUD 3 30 DB 3DL2 332 758 GEAR BOX ASS Y INCLUD 3 30 FOR CHN SIN VIE 320 085 GUIDE SLEEVE SET INCLUD 3 6 11 315 984 RETAINING RING 315 983 320 409 WASHER D GUIDE SPRING 319 921 GUIDE SLEEVE A 332 762 CLUTCH DIAL 326 341 NUT 326 340 326 339 SPRING WASHER D 319 535 STEEL BALL D3 5 10 PCS 332 761 GEAR CASE 332 760 GEAR CASE FOR CHN SIN VIE 326 345 326 338 SHIFT ARM PIN SET 3 PCS 317 788 STEEL BALL D3 326 323 LOCK RING 326 324 NEEDLE ROLLER SET 6PCS 326 329 326 325 NEEDLE CARRIER 326 327 PLANET GEAR C SET 3 PCS 326 326 RING GEAR 326 328 WASHER B 332 768 332 766 PINION C PLANET GEAR B SET 3 PCS 332 767 SLIDE RING GEAR 332 765 PINION B
5. Mount the parts from the Pin Set 3 pcs 14 to Washer A 29 to the parts assembled in the following b in order a Mount the Pin Set 3 pcs 14 and Steel Ball D3 15 b Pay attention to the mounting direction of the Ring Gear 21 Carrier 19 Pinion C 23 and Pinion B 26 Mount the parts Planet Gear C Set 20 Gear Case 12 Pin Set 14 Steel Ball D3 15 Lock Ring 16 Carrier 19 Ring Gear 21 Washer B 22 Pinion C 23 Planet Gear B Set 24 Slide Ring Gear 25 Pinion B 26 Planet Gear A Set 27 First Ring Gear 28 Needle Roller Set 17 Washer A 29 13 5 Reassembly of the drive unit 1 Pay attention to the mounting direction of the Motor DC 3 6V 31 and Switch W Lock 41 Insert the red marked terminal of the Motor DC 3 6V 31 into the terminal on the lock switch side of the Switch W Lock 41 At this time insert each terminal of the Motor DC 3 6V 31 between the terminal and the convex portion of the Switch W Lock 41 Insert the red marked terminal of the motor Lock switch Motor DC 3 6V 31 Enlarged section A Switch W Lock 41 Terminal Red mark T Convex portions 2 Mount the Motor Spacer 30 to the Motor DC 3 6V 31 with the two Machine Screw W Sp Washer M2 6 x 6 32 Do not mistake the head and tail of the Motor Spacer 30 Note that there is no difference in circumferential direction Pa
6. 8 34 and Handle Cover 39 Since there are latches in Housing A B Set 33 it is hard to open Open Housing A B Set 33 from the Shift Knob 38 side After opening Housing A B Set 33 all internal parts of the drive unit can be removed Pull out the drive unit consisting of the gear unit Motor DC 3 6V 31 and power supply unit 3 Disassembly of the drive unit internal parts 1 Remove the Shift Arm 13 from the Gear Box Ass y 1 2 Pull up the Motor DC 3 6V 31 and remove it from the Gear Box Assy 1 Remove the two Machine Screw W Sp Washer M2 6 x 6 32 then remove the Motor Spacer 30 from the Motor DC 3 6V 31 3 Pull up the Switch W Lock 41 and remove it from the Motor DC 3 6V 31 If it is difficult to remove use a flat blade screwdriver 4 Disassembly of the gear unit 1 Removal of the gear Take out Washer A 29 First Ring Gear 28 Planet Gear A Set 3 pcs 27 Pinion B 26 Slide Ring Gear 25 Planet Gear B Set 3 pcs 24 and Pinion C 23 one by one Then remove the two Needle 18 from the Gear Case 12 Take out Washer B 22 Ring Gear 21 Planet Gear C Set 3 pcs 20 Carrier 19 Needle Roller Set 6 pcs 17 Lock Ring 16 three Steel Ball D3 15 and Pin Set 3 pcs 14 one by one 10 2 Removal of Guide Sleeve A 6 Remove the Retaining Ring 3 Washer D 4 Guide Spring 5 and Guide Sleeve A 6 in order by following the p
7. of the Handling Instructions and fully understands the meaning of precautions listed on the Caution Plate and Name Plate attached to each tool A Handling instructions Salespersons must be thoroughly familiar with the Handling Instructions in order to give pertinent advice to the customer In particular they must have a thorough understanding of the precautions on using cordless tools that differ from those of ordinary electric power tools 1 Before use ensure that the unit is fully charged New units are not fully charged Even if the units were fully charged at the factory long periods of inactivity such as during shipping cause the storage battery to lose its charge Customers must be instructed to fully charge the unit prior to use 2 When charging storage batteries only use only the dedicated Model UC 3SFL Charger provided with the tool Due to the designed rapid charging feature of about 30 minutes the use of other battery chargers is hazardous 3 Connect the charger to an AC power outlet only The use of any other power source e g DC outlet fuel powered generator will cause the charger to overheat and burn out 4 Do not use any voltage increasing equipment e g transformer between the power source and the charger Using the charger with voltage higher than that indicated on the unit will result in malfunction 5 Conduct battery charging at an ambient temperature range of 10 C to 40 C 50 F to 104 F S
8. side of the Switch W Lock 41 to check that Guide Sleeve A 6 rotates clockwise as viewed from behind 2 Check for proper operation of the Shift Knob 38 Check that the speed properly changes between high and low by shifting the Shift Knob 38 If the speed does not change properly or moderately correctly remount the improperly mounted Shift Knob 38 according to step 5 Reassembly of the drive unit 3 3 Check that the LED goes on and off by pushing the Button 44 Although the LED cannot react when turned on off too quickly this is no failure 4 Check for flexible change of the handle between the L shape and straight shape Screw Tightening Torque Machine Screw W Sp Washer M2 6 x 6 32 0 1 to 0 29 N m 1 to 3 kgf cm Pan Hd Tapping Screw D3 x 8 34 0 49 to 0 64 Nm 5 to 6 5 kgf cm e Tapping Screw W Flange D4 x 20 Black 43 1 5 to 2 5 N m 15 to 25 kgf cm 2 Precautions on Disassembly and Reassembly of the Battery Charger Please refer to the Technical Data and Service Manual for precautions on disassembly and reassembly of the Battery Charger Model UC 3SFL 18 STANDARD REPAIR TIME UNIT SCHEDULES MODEL oe memes General assembly Wes Flow Housing A B Set Click Plate Guide Sleeve Set Shift Knob Switch Gear Box Ass y Clutch Dial Nut Spring Gear Case Shift Arm Lock Ring
9. 104 F temperature Overcharge prevention circuit A thermostat monitors the battery surface temperature and when a rise in temperature is detected after the end of charging the unit is Charger Model UC 3SFL turned off automatically to prevent the battery from overcharge Input capacity 21 W Indication method Pilot lamp indicates the charging state During charging Charging completed Net Main body including Type EBM 315 battery 0 4 kg 0 9 Ibs Weight Charger unit including cord 0 3 kg 0 7 16 Gross 3012 2LCSK including Type EBM 315 battery 1 8 kg 4 0 Ibs Standard accessories COMPARISON WITH SIMILAR PRODUCTS 1 Comparison of Specifications Superior specifications Maker HITACHI Model C DB 3012 Drilling Mild steel 5 13 64 Not indicated m S 3 8 mm dia x 38 mm 8 x 1 1 2 Not indicated driving M 5 1 5 Not indicated Rotation speed in in 1 1 5 N m 51 kgf cm 44 in Ibs 5 N m 51 kgf cm 44 in Ibs ___8 Stages amp Not indicated Spindle lock function Equipped Equipped Tool tip mounting system LED light Equipped Equipped Soft grip handle Equipped Equipped Battery type Nominal capacity 1 5 Ah 1 2 Ah Nominal voltage Charging time So AU 60 min argin Ime Model UC 3SFL Straight shape 67 mm 2 41 64 210 mm 8 17 64 as 46 mm 1 13 16 0 7 kg 1 5 Ibs
10. 326 335 PLANET GEAR A SET 3 PCS 326 334 332 764 FIRST RING GEAR WASHER A 332 763 MOTOR SPACER 332 755 MOTOR DC 3 6V 330 755 MACHINE SCREW W SP WASHER M2 6 X 6 332 754 984 319 HOUSING A B SET PAN HD TAPPING SCREW D3 X 8 HITACHI LABEL 317 788 STEEL BALL D3 326 315 CLICK PLATE 332 757 332 975 SHIFT KNOB HANDLE COVER 326 309 CLICK SPRING 332 769 SWITCH W LOCK NAME PLATE 302 086 332 756 TAPPING SCREW W FLANGE D4 X 20 BLACK BUTTON 332 770 PRINTED CIRCUIT BOARD 332 771 TERMINAL 326 316 TERMINAL SUPPORT N fei a oL oL mm BN BR RP 326 299 BATTERY EBM 315 EUROPE AUS NZL ALTERNATIVE PARTS N PARTS ITEM NO CODE NO 326 263 DESCRIPTION ach BATTERY EBM 315 USA CAN REMARKS DB 3DL2 330 757 BATTERY EBM 315 CHN 326 318 CLIP 332 752 HANDLE A B SET GREEN 332 588 HANDLE A B SET BLACK ALTERNATIVE PARTS STANDARD ACCESSORIES DB 3DL2 CODE NO DESCRIPTION REMARKS 992 671 DRIVER BIT B NO 2 50L 983 006 DRIVER BIT NO 2 65L FOR CHN SIN VIE CHARGER MODEL UC 3SFL 332 844 CASE
11. E M M EE NEW FEATURES Built in protection circuit 9 mm mm mm mm SAME FEATURES AS THE CONVENTIONAL MODELS overcurrent protection circuit Lightweight and compact White LED light 4 Equipped with lithium ion battery 5 Flexibly changeable handle 6 Soft grip handle 7 Manual tightening mechanism 21 stage clutch 9 Lock button Blow molded case SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT HITACHI Hitachi Koki Co Ltd International Sales Division REMARK e For more information about HANDLING INSTRUCTIONS visit our website at http www hitachi koki com manual_ view export e 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 CONTENTS Page SELLING POINTS eene ree nennen nnn nena nena nnn 1 SPECIFICATIONS 4 1 Specifications 2 2 2222 4 COMPARISON WITH SIMILAR PRODUCTS 5 1 Comparison of Specifications 5 2 Comparison of Drilling and
12. Fastening Performance per Charge 6 PRECAUTIONS ON SALES PROMOTION 7 1 Safety Instructions T T T YT TT 7 2 Inherent Drawbacks of Cordless Driver Drills Requiring Particular Attention during Sales Promotion 8 REPAIR GUIDE 10 1 Precautions on Disassembly and Reassembly 10 2 Precautions on Disassembly and Reassembly of the Battery Charger 18 STANDARD REPAIR TIME UNIT SCHEDULES 19 Assembly Diagram for DB 3DL2 SELLING POINTS Built in verdischarge protection circuit overcurrent protection circuit The built in verdischarge protection circuit and overcurrent protection circuit prevent any loss in battery service life due to overdischarge excessive use and overcurrent excessive load Lightweight and compact The Model DB 3DL2 is compact and lightweight It is easy to handle and convenient for operation in narrow spaces Q White LED light The Model DB 3DL2 is equipped with a white LED light at the tip This light can be used regardless of the handle shape L shape or straight shape The light lights when the light switch is pushe
13. Hitachi Power Tools June 2010 TECHNICAL DATA AND SERVICE MANUAL PRODUCT NAME Hitachi 3 6 V Cordless Driver Drill Model DB 3DL2 MARKETING OBIECTE The Model DB 3DL2 is a cordless driver drill equipped with a 3 6 V lithium ion battery The Model DB 3DL2 has the following main features 1 2 3 4 Built in verdischarge protection circuit and overcurrent protection circuit Equipped with newly developed lithium ion battery 3 6 V 1 5 Ah that can be fully charged in 30 minutes Flexibly changeable handle between L shape and straight shape Lightweight and compact White LED light Manual tightening mechanism Screws are easily tightened manually thanks to the comfortable handle shape and soft grip 5 6 i s s s s s We aim to expand our market share with the new Model DB 3DL2 APPLICATIONS Constructing electric facilities assembling machines and servicing e Tightening and loosening wood screws and machine screws e Drilling into plastic and mild steel SELLING POINTS P
14. d see HANDLING INSTRUCTIONS Light switch White LED light White LED light 4 Equipped with lithium ion battery The Type EBM 315 lithium ion battery 3 6 V 1 5 Ah can be fully charged by the Model UC 3SFL Battery Charger in just 30 minutes The minus terminal has a cover to prevent improper short circuits There is no need to put on a battery cover as required for a conventional battery e lithium ion battery Type EBM 315 Battery Charger Model UC 3SFL There is no need to put a battery cover required for a conventional battery Terminal cover 5 Flexibly changeable handle The handle is flexibly changeable between the L shape and straight shape for various applications e Straight shape Bent sections L shape see HANDLING INSTRUCTIONS 6 Soft grip handle The handle is soft and slip resistant The end of the handle is also knobbed for a stable grip in manual tightening The handle end is knobbed for stable gripping in manual tightening 7 Manual tightening mechanism The Model DB 3DL2 can be used as a manual screwdriver If a screw cannot be completely tightened with the clutch setting power off the Model DB 3DL2 and use it as a manual screwdriver by simply turning its main body maximum manual tightening torque 5N m 51 kgf cm e Power off the Model DB 3012 and use it as a manual screwdriver by turning the main body see HANDLING INSTRUCTIONS 21 stage clutch The torque can b
15. e finely adjusted by the 21 stage clutch The tightening torque of this unit can be adjusted according to the clutch dial position at which the clutch dial is set see HANDLING INSTRUCTIONS Clutch dial Triangle mark Drill mark 9 Lock button The lock button is provided to prevent inadvertent motor startup even if the switch is mistakenly turned on To activate the main switch lock move the lock switch to the V Lock position see HANDLING INSTRUCTIONS Lock Switch Unlock b Lock Blow molded case The compact blow molded case is convenient for carrying the tool SPECIFICATIONS 1 Specifications DB 3012 Screw drivin Machine screw M 5 1 5 Capacity 7 Wood screw 3 8 mm dia x 38 mm 8 x 1 1 2 Drilling Mild steel 5 mm 13 64 Thickness 1 0 mm 3 64 6 35 mm 1 4 bit holder Low 200 min Rotation speed High 600 TS Slip torque 0 3 to 2 9 N m 3 to 30 kgf cm to 26 in Ibs 21 stages u torque 5 51 kgf cm 44 in Ibs of motor DC magnet motor Type of switch Tumbler switch with forward reverse changeover pushing button Glassfiber reinforced nylon resin black and thermoplastic elastomer green Enclosure Polycarbonate resin black ABS resin black Type of battery T Ue 30 minutes EBM 315 Charging time with standard accessory charger at ambient temperature of 20 C Chargin E 10 C to 40 C 50 F to
16. housing unit 1 Mount the Click Spring 40 to Housing A B Set 33 so that the convex portion of the Click Spring 40 can be seen Apply grease Hitachi Motor Grease No 29 to the Click Spring 40 Mount the click spring Click Spring 40 Convex portion 15 2 Mount the LED to Housing A B Set 33 Put the internal wires of the LED between the ribs of Housing A B Set 33 Mount the LED 3 Mount the drive unit to Housing A B Set 33 Put the internal wires of the LED and Switch W Lock 41 through the rib of the housing Mount the drive unit and put the internal wires 4 Close Housing A B Set 33 and mount the Handle Cover 39 Tighten the four Pan Hd Tapping Screw D3 x 8 34 5 Mount the two Click Plate 37 to Housing A B Set 33 and apply grease Hitachi Motor Grease No 29 16 6 Check for proper operation of the Clutch Dial 7 When the reassembly procedure is completed up to step 5 ensure that every indication on the Clutch Dial 7 from number 1 to the drill mark WW can be aligned with the triangle mark on Housing A B Set 33 respectively and that the Clutch Dial 7 turns moderately If any indication on the Clutch Dial 7 cannot be aligned with the triangle mark on Housing A B Set 33 correctly remount the improperly mounted Clutch Dial 7 according to step 2 Reassembly of the clutch unit 2 8 Reassembly of the handle unit
17. in fire or other hazards Instruct the customer to bring these units to an authorized service center in the event repair or replacement is necessary 9 Disposal of the storage battery Type EBM 315 Ensure that all customers understand that Type EBM 315 storage battery should be returned to the Hitachi power tool sales outlet or authorized service center when no longer capable of being recharged or repaired If thrown into a fire the battery may explode or if discarded indiscriminately leakage of the cadmium compound contained in the battery may cause environmental pollution B Caution plates The following cautions are listed on the Name Plate attached to each Type EBM 315 storage battery For Europe CAUTION Read thoroughly HANDLING INSTRUCTIONS before use e Do not disassemble nor throw into fire For the USA and Canada CAUTION For safe operation see instruction manual Use HITACHI charger recommended in instruction manual for recharging 2 Inherent Drawbacks of Cordless Driver Drills Requiring Particular Attention during Sales Promotion The cordless driver drill offers many advantages it can be used in places where no power source is available the absence of a cord allows easy use etc However any cordless tool has certain inherent drawbacks Salespersons must be thoroughly familiar with these drawbacks in order to properly advise the customer in the most efficient use of the tool A Suggestio
18. inal 46 2 Reassembly of the clutch unit 1 Mount Washer D 10 and the Spring 9 to the Gear Case 12 2 Mount the Nut 8 to the Gear Case 12 Align register mark i on the Nut 8 with the register mark on the Gear Case 12 Turn the Nut 8 about 1 1 12 turns clockwise so that register mark ii on the Nut 8 is aligned with the register mark on the Gear Case 12 Check that the Y surface of the Nut 8 is aligned with the Z surface of the Gear Case 12 Mount the Nut to the Gear Case Mounting start position Mounting end position Y surface Gear Case 12 Gear Case 12 12 3 Reassembly of the manual tightening mechanism 1 Mount the Lock Ring 16 to the Gear Case 12 so that the protrusion of the Lock Ring 16 IS Mount the Lock Ring and the Needle Roller Set aligned with the concave portion of the Gear Case Lock Ring 16 12 At this time mount the Lock Ring 16 so that Needle Roller Set the stepped protrusion faces forward 6pcs 17 2 Mount the Needle Roller Set 6 pcs 17 Concave portion NOTE Do not apply grease to the Lock Ring 16 and Needle Roller Set 6 pcs 17 Protrusion Gear Case 12 Stepped portion 4 Reassembly of the deceleration mechanism 1 Apply a sufficient amount of grease Hitachi Motor Grease No 29 to the engaging portions of each gear and the needle roller unit and the contacting surfaces of the steel balls of the ring gear 2
19. ns and precautions on efficient use of the tool 1 Use the cordless driver drill for comparatively light work The motor output of battery driven cordless driver drills is rather low compared with conventional electric power tools Accordingly they are not suitable for the continuous drilling of many holes in succession or for drilling into particularly hard material that imposes a heavy load Salespersons should recommend conventional electric power tools for such heavy work 2 Work requiring particularly strong torque should be conducted at low speed Instruct the customer to conduct work that requires particularly strong torque at low speed as locking of the motor may occur at high speed 3 Do not insert a foreign object into the body A foreign object inserted through a hole may cause failure Please instruct customers to never insert a foreign object into the main body of the tool 4 Avoid Locking of the motor Locking of the motor will generate an overload current that could result in motor burnout and or rapid battery deterioration Salespersons should advise the customer to immediately release the switch and stop operation if the motor becomes locked A jammed drill bit can be disengaged from the workpiece material by setting the switch to reverse rotation or by manually turning the main body of the tool 5 Variation in amount of work possible per charge Although the nominal chargeable capacity of the storage battery used wi
20. pecial temperature sensitive devices are employed in the charger to permit rapid charging Ensure that customers are instructed to use the charger at the indicated ambient temperature range At temperature below 10 C 50 F the thermostat will not function properly and the storage battery may be overcharged At temperature above 40 C 104 F the storage battery cannot be sufficiently charged The optimum temperature range is 20 C to 25 C 68 F to 77 F 6 The battery charger should not be used continuously Charging more than three storage batteries in succession at high ambient temperature will raise the temperature of transformer coils and the temperature fuse inserted inside the transformer may inadvertently melt After charging one battery please wait about 15 minutes before charging the next battery 7 Do not insert foreign objects into the air vents on the charger The charger case is equipped with air vents to protect the internal electronic components from overheating Caution the customer not to allow foreign materials such as metallic or flammable objects to be dropped or inserted into the air vents This could cause electric shock fire or other serious hazards 8 Do not attempt to disassemble the storage battery or the charger Special devices such as a thermostat are built into the storage battery and charger to permit rapid charging Incorrect parts replacement and or wiring will cause malfunctions which could result
21. rocedure shown in Fig 1 1 to 1 4 Then slowly raise the other side of the retaining ring with the small flat blade screwdriver until it is free Avoid quickly raising the retainer ring or it may fly out forcefully Small flat blade Socket screwdriver Washer D 4 Fig 1 1 Hold the body and adjust the gap of the Retaining Ring 3 to the groove of socket then insert a small flat blade Screwdriver screwdriver into the groove at an angle Slide the small flat blade screwdriver under one side of Slowly raise the retaining ring using the end face of the gap of the Retaining Ring 3 Guide Sleeve A 6 as a fulcrum 3 Disassembly of the clutch unit Remove the Clutch Dial 7 after removal of Guide Sleeve A 6 Turn the Nut 8 counterclockwise and remove it from the Gear Case 12 Remove the Spring 9 and Washer D 10 from the Gear Case 12 NOTE Do not remove the Gear Case 12 5 Disassembly of the power supply unit The internal wires of the Switch W Lock 41 and Terminal 46 are soldered to the Printed Circuit Board 45 Unsolder and remove the parts NOTE Do not remove the Printed Circuit Board 45 11 Reassembly Conduct reassembly by reversing the disassembly procedures However special attention should be given to the following items 1 Reassembly of the power supply unit Perform wiring according to the wiring diagram Switch W Lock 41 Printed Circuit Board 45 Term
22. should be advised to place the battery in a shaded area with good airflow and allow sufficient cooling before recharging This phenomenon is common to all existing batteries and chargers that employ temperature sensitive overcharge protection devices The cooling time necessary before recharging can vary from a few minutes to about 30 minutes depending on the load duration of use and ambient temperature REPAIR GUIDE Be sure to remove the storage batteries from the main body before servicing Inadvertent triggering of the switch with the storage battery connected imposes the danger of the motor accidently turning 1 Precautions on Disassembly and Reassembly Bold numbers in the descriptions below correspond to item numbers in the Parts List and exploded assembly diagram for the Model DB 3012 Disassembly 1 Removal of Handle A B Set 1 Removal of the Clip 49 2 pcs Insert a flat blade screwdriver in the indention of the Clip 49 and remove the Clip 49 2 Remove the Tapping Screw W Flange D4 x 20 Black 43 3 Grip the battery insertion part and open Handle A B Set 50 Since there are latches in Handle A B Set 50 it is hard to open Open Handle A B Set 50 from the LED button side Then remove the Button 44 Do not remove the Steel Ball D3 36 from Handle A B Set 50 Removal of the Clip 2 Removal of Housing A B Set Remove the two Click Plate 37 Pan Hd Tapping Screw D3 x
23. th the Model DB 3DL2 is 1 5 Ah the actual capacity may vary within 10 of that value depending on ambient temperature during use and charging and the number of times the batteries have been recharged It should be noted that other factors that may affect the amount of work possible per charge are the working conditions e g ambient temperature type and moisture content of the workpiece sharpness of the drill bit and the operational skill of the user 6 Precautions on the use of HSS drill bits For example although the Model DB 3DL2 is designed for drilling capacities of 5 mm 13 64 in mild steel this capability is not as efficient as conventional electric power tools In particular the drill tends to become locked when the drill bit penetrates a material For this reason the customer should be cautioned to reduce the thrust on the main body of the drill when drilling completely through a material to avoid locking the tool Repeated locking of the drill causes excessive current to flow from the batteries thereby not only reducing the amount of work possible per charge but also possibly resulting in motor burnout B Suggestions and precautions on efficient use of the charger and storage battery If the Type EBM 315 storage battery is exposed to direct sunlight for an extended period or the tool has just been operated for a long time charging may not be possible if the battery temperature is above 40 C 104 F In such case the customer
24. y attention to the mounting direction when mounting the Motor DC 3 6V 31 to the Gear Box Ass y 1 Mount the motor spacer Convex portion Shift Arm 13 Motor Spacer 30 Gear Case 12 Motor DC 3 6V 31 Pag Machine Screw W Sp Washer M2 6 x 6 32 14 3 Mount the Shift Arm 13 to the Shift Knob 38 by using a small flat blade screwdriver to completely push the Shift Arm 13 into the groove of the Shift Knob 38 Insert the end of the Shift Arm 13 into the hole of the Gear Case 12 and fit it in the groove of the Slide Ring Gear 25 Pay attention to the direction of the Gear Case 12 Do not mount the Shift Arm 13 facing downward Mount the Shift Arm pr rc Shift Knob 38 Slide Ring Gear 25 Shift Arm 13 Gear Case 12 6 Mounting the Clutch Dial to the Gear Case The Nut 8 has three protrusions One of these protrusions is wider than the Mounting the clutch dial others The Clutch Dial 7 has three indicated with 1 concave portions One of these concave ete te Wider portions is wider than the others Mount Protrusion Concave portion u the Nut 8 to the Clutch Dial 7 by RS aligning the wider protrusion of the Nut 8 with the wider concave portion of the C Clutch Dial 7 The wider concave 2 portion in the Clutch Dial 7 is at the sr castes M position indicated with 1 on the outside of the Clutch Dial 7 7 Reassembly of the
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