Hitachi Power Tools
Contents
1. Model UC 3SFL Type of switch Tumbler switch with forward reverse changeover pushing button Body eere Glassfiber reinforced polycarbonate resin black Enclosura and thermoplastic elastomer green Battery Polycarbonate resin black Changer seems ABS resin black Battery Type of battery Sealed cylindrical lithium ion storage battery Type EBM 315 Nominal voltage DC 3 6 V Nominal life Charging discharging approximately 500 times Nominal capacity 1 5 Ah Charging time 30 minutes with standard accessory charger at ambient temperature of 20 C Charging 8 o o temperature 10 C 40 50 F 104 F Charger Overcharge prevention circuit A thermostat monitors the surface temperature of the battery and on detecting the temperature rise which occurs on completion of charging automatically turns off the unit to prevent the battery from overcharge Input capacity 21 W Indication method Pilot lamp indicates the charging state Weight e Function On During charging Off t Charging completed Net Main body including Type EBM 315 battery 0 4 kg 0 9 Ibs Charger unit including cord scd rere tenerent tee 0 3 kg 0 7 Ibs Gross DB 3DL 2MSK including Type EBM 315 battery 1 8 kg 4 0 Ibs Standard accessories Charger WC ASIEI iazul Mat c a cat e 1 Battery2. Equipped with the new lithium ion battery 3 6 V 1 5 Ah e Terminal cover is closed automatically to prevent improper short circuit S 7 Flexibly changeable handle e The handle is flexibly changeable between L shape and straight shape for various N applications Lightweight and compact Easy to handle thanks to the lightweight design The compact body is convenient V for operation in narrow spaces E Soft and slip resistant thanks to the elastomer resin The handle end is knobbed for stable gripping in manual tightening J Blow molded case e The blow molded case is compact and convenient for carrying 4 1 Selling Point Descriptions 4 1 1 Equipped with the new lithium ion battery The newly developed Type EBM 315 lithium ion battery 3 6 V 1 5 Ah can be fully charged by the Model UC 3SFL charger in 30 minutes The minus terminal has a terminal cover to prevent improper short circuit There is no need to put a battery cover required for a conventional battery Terminal cover 4 1 2 Lightweight and compact The Model DB 3DL is most compact and lightweight in the class It is easy to handle and convenient for operation in narrow spaces 4 1 3 Flexibly changeable handle The handle is flexibly changeable between L shape and straight shape for various applications Sez 4 1 4 Yellow LED light The Model DB
3. 815 ictor tero ia ot panta 2 Phillips plus driver bit NO 2 rtr re eene 1 Case qu n 1 6 COMPARISONS WITH SIMILAR PRODUCTS Charging time 30 min Model UC 3SFL Maker HITACHI C Model name DB 5 Scrow Machine screw 5 mm 1 5 Not indicated g driving Wood screw 3 5 mm dia x 20 mm 6 x 25 32 Not indicated E Drilling Mild steel 2 mm 5 64 Not indicated Rotation Low 200 200 Speed 600 600 Slip torque 0 3 2 9 Nm 3 30 kgf cm Not indicated 3 26 in Ibs 21 stages 8 stages Max torque 5 51 kgf cm 44 in lbs 5 N m 51 kgf cm 44 in lbs Battery type Li ion Ni Cd gt Nominal capacity 1 5 Ah 1 2 Ah 8 Nominal voltage 3 6 V 3 6 V n 60 min Tool tip mounting system Driver chuck Driver chuck Straight Overall length 249 mm 9 13 16 Spindle lock function Equipped Equipped Soft grip handle Equipped Equipped LED light Equipped Equipped 295 mm 11 39 64 shape Overall height 45 mm 1 49 64 67 mm 2 41 64 Overall length 196 mm 7 23 32 195 mm 7 43 64 Dimesions L shape Overall height 126 mm 4 61 64 170 mm 6 11 16 Width 45 mm 1 49 64 46 mm 1 13 16 Weight 0 4 kg 0 9 Ibs 0 7 kg 1 5 Ibs Charging time may vary depending on the type of charger to be used 7 WORKING PERFORMANCE PER SINGLE CHARGE Drilling a
4. 49 it is hard to open Open Handle A B set 49 from the LED button side Then remove the Button 45 Do not remove the Steel Ball D3 36 from Handle A B Set 49 2 Removal of Housing A B Set 32 Remove the two Click Plates 35 Hitachi Label 38 Pan Hd Tapping Screw D3 x 8 33 and Handle Cover 43 Since there are latches in Housing A B Set 32 it is hard to open Open Housing A B Set 32 from the Shift Knob 39 side After opening Housing A B Set 32 all the internal parts drive unit can be removed Pull out the drive unit consisting of the gear unit Motor 31 and power supply unit 3 Disassembly of the drive unit internal parts a Remove the Shift Arm 12 from the Gear Box Ass y 1 b Pull up the Motor 31 and remove it from the Gear Box Ass y 1 Remove the two Machine Screws W Sp Washer M2 6 x 8 29 then remove the Motor Spacer 30 from the Motor 31 c Pull up the Switch W Lock 40 and remove it from the Motor 31 When it is hard to remove use a flat blade screwdriver zo 4 Disassembly of the gear unit a Removal of the gear Take out Washer A 28 First Ring Gear 27 Planet Gear A Set 3 pcs 26 Pinion B 25 Slide Ring Gear 24 Planet Gear Set 3 pcs 23 and Pinion 22 by one Then remove the two Needles 17 from the Gear Case 11 Take out Washer B 21 Ring Gear 20 Planet Gear C Set 3 pcs 19 Carrier
5. Charger Please refer to the Technical Data and Service Manual for precautions in disassembly and reassembly of the Battery Charger Model UC 3SFL 20 10 STANDARD REPAIR TIME UNIT SCHEDULES Guide Sleeve Set Gear Box Ass y Clutch Dial Nut Spring Gear Case Shift Arm Lock Ring 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 Variabl MODEL analis 10 20 30 40 50 60 Fixed Work Flow DB 3DL Housing A B Set Handle A B Motor Set shift Knob Click Plate Switch Hitachi Power Tools LIST NO G857 ELECTRIC TOOL PARTS LIST CORDLESS DRIVER DRILL 2006 9 15 Model DB 3DL E1 5 326 348 DESCRIPTION GEAR BOX ASS Y REMARKS INCLUD 2 28 30 DB 3DL 315 984 RETAINING RING 315 983 WASHER D 320 409 GUIDE SPRING 319 921 326 342 GUIDE SLEEVE A CLUTCH DIAL 326 341 NUT 326 340 SPRING oo RIOJN 326 339 WASHER D 319 535 326 349 STEEL BALL D3 5 10 PCS GEAR CASE 326 345 SHIFT ARM 326 338 PIN SET 3 PCS 317 788 STEEL BALL D3 326 323 326 324 LOCK RING NEEDLE ROLLER SET 6 PCS 326 329 NEEDLE 326 325 CARRIER 326 327 PLANET GEAR C S
6. 18 Needle Roller Set 6 pcs 16 Lock Ring 15 three Steel Balls D3 14 and Pin Set 3 pcs 13 one by one b Removal of Guide Sleeve A 5 Remove the Retaining Ring 2 Washer D 3 Guide Spring 4 and Guide Sleeve A 5 in order by following the procedure shown in Figs 2 1 to 2 4 Small flat blade 2 Socket screwdriver Washer D 3 Retaining Ring 2 Guide Sleeve A 5 Fig 2 1 Fig 2 2 Hold the body and adjust the gap of the Retaining Press down Washer D 3 with the small flat Ring 2 to the groove of socket then insert a small blade screwdriver flat blade screwdriver into the groove at an angle 3 Fig 2 3 Fig 2 4 Slide the small flat blade screwdriver under one Slowly raise the retaining ring using the end side of the gap of the Retaining Ring 2 face of Guide Sleeve A 5 as a fulcrum 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 c Disassembly of the clutch unit Remove the Clutch Dial 6 after removal of Guide Sleeve A 5 Turn the Nut 7 counterclockwise and remove it from the Gear Case 11 Remove the Spring 8 and Washer D 9 from the Gear Case 11 NOTE Do not remove the Gear Case 11 43 5 Disassembly of the power supply unit Remove the Terminal 44 from the Terminal Support 46 The internal
7. 30 to the Motor 31 with the two Machine Screws W Sp Washer M2 6 x 8 29 Do not mistake the head and the tail of the Motor Spacer 30 Note that there is no difference in circumferential direction Pay attention to the mounting direction when mounting the Motor 31 to the Gear Box Ass y 1 See Fig 8 i Fig 8 Mount the Shift Arm 12 to the Shift Knob 39 by pushing the Shift Arm 12 in the groove of the Shift Knob 39 completely with a small flat blade screwdriver Insert the end of the Shift Arm 12 into the hole of the Gear Case 11 and fit it in the groove of the Slide Ring Gear 24 Pay attention to the direction of the Gear Case 11 Do not mount the Shift Arm 12 downward See Fig 9 Shift Knob 39 Groove Shift Arm 12 Gear Case 11 Slide Ring Gear 24 Fig 9 3 Mounting the Clutch Dial 6 to the Gear Case 11 The Nut 7 has three protrusions One of these protrusions is wider than the others The Clutch Dial 6 has three concave portions One of these concave portions is wider than the others Mount the Nut 7 to the Clutch Dial 6 aligning the wider protrusion of the Nut 7 with the wider concave portion of the Clutch Dial 6 The wider concave portion in the Clutch Dial 6 is at the position indicated with 1 on the outside of the Clutch Dial 6 See Fig 10 47 Clutch Digg 17918818 with 1 Wider protrusion Wider concave portion Nut 7 Protrus
8. 3DL is equipped with a yellow LED light at the tip It is usable regardless of the handle shape either L shape or straight shape LED light 4 1 5 Soft grip handle The handle is soft and slip resistant In addition the handle end is knobbed for stable gripping in manual tightening 4 1 6 Manual tightening mechanism The Model DB 3DL is usable as a manual screwdriver When a screw cannot be tightened completely with the clutch setting power off the Model DB 3DL and use it as a manual screwdriver by turning the main body maximum manual tightening torque 5 N m 51 kgf cm 4 1 7 21 stage clutch The torque can be finely adjusted by the 21 stage clutch 4 1 8 Lock button The lock button is provided to prevent inadvertent start of the motor even if the switch is turned on by mistake 4 1 9 Blow molded case The compact blow molded case is convenient for carrying the tool A spare battery optional accessory can also be stored in the case 5 SPECIFICATIONS Capacity Screw driving Machine screw 5 mm 1 5 Wood screw 3 5 mm dia x 20 mm 6 x 25 32 Drilling Metal Mild steel 2 mm 5 64 Thickness 1 0 mm 3 64 Tool retainer 6 35 mm 1 4 bit holder Rotation speed Low 200 min High 600 min Torque Slip torque 0 3 2 9 Nm 3 30 kgf cm 3 26 in lbs 21 stages Max torque 5 N m 51 kgf cm 44 in Ibs Type of motor DC magnet motor
9. ET 3 PCS 326 326 326 328 RING GEAR WASHER B 326 330 PINION C 326 332 PLANET GEAR B SET 3 PCS 326 331 SLIDE RING GEAR 326 333 326 335 PINION B PLANET GEAR A SET 3 PCS 326 334 FIRST RING GEAR 326 336 WASHER A 326 319 MACHINE SCREW W SP WASHER M2 6X8 326 337 326 310 MOTOR SPACER MOTOR 326 307 HOUSING A B SET 984 319 PAN HD TAPPING SCREW D3X8 NAME PLATE 326 315 317 788 CLICK PLATE STEEL BALL D3 302 086 TAPPING SCREW W FLANGE D4X20 BLACK HITACHI LABEL 326 308 SHIFT KNOB 326 311 326 313 SWITCH W LOCK PRINTED CIRCUIT BOARD 326 309 CLICK SPRING 326 314 HANDLE COVER 326 312 TERMINAL 326 317 326 316 BUTTON TERMINAL SUPPORT 326 299 BATTERY EBM 315 EUROPE AUS NZL 326 263 BATTERY EBM 315 USA CAN 326 318 CLIP 326 347 320 085 HANDLE A B SET GUIDE SLEEVE SET 1 1 1 1 1 1 1 1 1 1 1 3 3 1 6 2 1 3 1 1 1 3 1 1 3 1 1 2 1 1 1 4 1 2 4 1 1 1 1 1 1 1 2 1 1 2 2 2 1 INCLUD 36 INCLUD 2 5 10 ALTERNATIVE PARTS STANDARD ACCESSORIES DESCRIPTION DRIVER BIT 2 501 CODE 992 671 REMARKS DB 3DL CHARGER MODEL UC 3SFL 326 346 OPTIONAL ACCESSORIES CODE NO 326 665 DESC
10. Hitachi Power Tools TECHNICAL DATA AND SERVICE MANUAL CORDLESS DRIVER DRILL LIST No G857 Sep 2006 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 C DeWalt DC600KA E CONTENTS PRODUCT aan 2 MARKETING OBJECTIVE 22 222 2 4 SELLING POIN ge 4 1 Selling Point Descriptions esssseessssessssseeee 4 enne nnne nennt nnns 5 SPECIFICATIONS inca 6 COMPARISONS WITH SIMILAR PRODUCTS WORKING PERFORMANCE PER SINGLE CHARGE PRECAUTIONS IN SALES PROMOTION nnns 8 1 Safety Iristr ctlOnls ert aia da iata sn ae na rn casa 8 2 Inherent Drawbacks of Cordless Driver Drills Requiring Particular Attention During Sales e REPAI
11. R GUIDE e M 9 1 Precautions in Disassembly and 9 2 Precautions Disassembly Reassembly of Battery Charger 10 STANDARD REPAIR TIME UNIT SCHEDULES Assembly Diagram for DB 3DL 1 PRODUCT Hitachi 3 6 V Cordless Driver Drill Model DB 3DL 2 MARKETING OBJECTIVE The Model DB 3DL is a cordless driver drill equipped with a 3 6 V lithium ion battery The Model DB 3DL has the following main features 1 Equipped with the newly developed lithium ion battery 3 6 V 1 5 Ah This battery can be fully charged in 30 minutes 2 Flexibly changeable handle between L shape and straight shape 3 Lightweight and compact 4 Yellow LED light 5 Manual tightening mechanism Easy to tighten screws manually thanks to the comfortable handle shape and a a the soft grip We aim to expand our market share with the new Model DB 3DL 3 APPLICATIONS Constructing electric facilities assembling machines and servicing 6 Tightening and loosening wood screws and machine screws Drilling into plastic and mild steel 4 SELLING POINTS Yellow LED light Convenient for operation dark place Usable at anytime by turning on the light switch Manual tightening mechanism Usable as a manual v screwdriver 21 stage clutch Fine torque adjustment A Soft grip handle A
12. RIPTION HOLSTER REMARKS 992 670 DRIVER BIT 1 501 992 672 DRIVER 3 501 992 675 DRIVER BIT 4MMX50 992 676 992 677 DRIVER BIT B 5MMX50 DRIVER BIT B 6MMX50 321 823 DRILL CHUCK AND ADAPTER SET INCLUD 608 609 307 543 CHUCK ADAPTER 987 575 CHUCK WRENCH FOR 10VLB D 10VLR D ALTERNATIVE PARTS DESCRIPTION NO REMARKS DB 3DL Printed in Japan 9 06 060915N Q Hitachi Koki Co Ltd
13. ion Protrusion Concave Concave portion portion Fig 10 7 Reassembly of the housing unit a Mount the Click Spring 42 to Housing A B Set 32 so that the convex portion of the Click Spring 42 can be seen Apply grease Hitachi Motor Grease No 29 to the Click Spring 42 See Fig 11 b Mount the LED to Housing A B Set 32 and fix the internal wires with the seal Put the internal wires of the LED between the ribs of Housing A B Set 32 See Fig 12 The black internal wire is positioned forward Fig 12 c Mount the drive unit to Housing A B Set 32 Put the internal wires of the LED and the Switch W Lock 40 through the rib of the housing in the order of red and black internal wires of the LED then black and red internal wires of the Switch W Lock 40 138 Switch LED Red Black Black Red Rib Do not pinch the intenal wires Fig 13 d Close Housing A B Set 32 and mount the Handle Cover 43 Tighten the four Pan Hd Tapping Screws D3 x 8 33 e Mount the two Click Plates 35 to Housing A B Set 32 and apply grease Hitachi Motor Grease No 29 f Check for proper operation of the Clutch Dial 6 When the reassembly procedure is completed up to step e ensure that every indication on the Clutch Dial 6 from number 1 to the drill mark can be aligned with the triangle mark on Housing A B Set 32 respectively and that the C
14. llustrated in Fig 16 B J295 jig A NOTE Be sure to replace the Retaining Ring 2 with Washer D 3 J for retaining ring new one because the Retaining Ring 2 may be deformed if it is removed Guide Sleeve A 5 may come off if the deformed Retaining Ring 2 is used again Fig 16 10 Other precautions in reassembly After completion of reassembly set the storage battery and check for operation a Check the rotating direction of Guide Sleeve A 5 Press the R side of the Switch W Lock 40 to check that Guide Sleeve A 5 rotates clockwise as viewed from behind b Check for proper operation of the Shift Knob 39 Check that the speed changes between high and low properly by shifting the Shift Knob 39 If the speed does not change properly or moderately correctly remount the Shift Knob 39 according to step 6 c as it is improperly mounted c Check that the LED is lit and turned off by pushing the Button 45 Although the LED cannot react when turned on off too quickly it is not a failure d Check for flexible change of the handle between L shape and straight shape 11 Screw tightening torque Machine Screw W Sp Washer M2 6 x 8 29 0 1 0 2 1 3 kgf cm Pan Hd Tapping Screw D3 x 8 33 0 49 0 64 N m 5 6 5 kgf cm Tapping Screw W Flange D4 x 20 Black 37 1 5 2 5 N m 15 25 kgf cm 9 2 Precautions in Disassembly and Reassembly of Battery
15. lutch Dial 6 turns moderately If any indication on the Clutch Dial 6 cannot be aligned with the triangle mark on Housing A B Set 32 correctly remount the Clutch Dial 6 according to step 2 b as it is improperly mounted g Check that the internal wires of the Switch W Lock 40 do not intersect with the internal wires of the LED See Fig 14 Internal wire of the LED Red Internal wire of the LED Black Internal wire of the Internal wire of switch Black the switch Red Fig 14 8 Reassembly of the handle unit Mount either of Handle A B Set 49 to Housing A B Set 32 Fit the Printed Circuit Board 41 and the Terminal Support 46 in the grooves of the handle See Fig 15 Mount the Button 45 to the switch of the Printed Circuit Board 41 and close Handle A B Set 49 Tighten the Tapping Screw W Flange D4 x 20 Black 37 Mount the two Clips 48 to the groove of Handle A B Set 49 using a flat blade screwdriver 19 Printed Circuit Board 41 Button 45 Terminal 44 Terminal Support 46 Fig 15 9 Mounting Guide Sleeve A 5 Put the Steel Ball D3 5 10 pcs 10 in the hole of the socket Mount Guide Sleeve A 5 Guide Spring 4 Push down and Washer D 3 in sequence Fit the Retaining Ring J295 jig B 2 in the groove of the socket using the J295 jigs A Retaining Ring 2 for retaining ring and B for retaining ring as i
16. mbient temperature range of 10 C 40 C 50 F 104 F Special 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 under 10 50 F the thermostat will not function properly and the storage battery may be overcharged At temperature over 40 104 F the storage battery cannot be sufficiently charged The optimum temperature range is 20 25 C 68 F 77 F 6 The battery charger should not be used continuously At high ambient temperature if over three storage batteries are charged in succession the temperature of the coils on the transformer will rise and there is a chance that the temperature fuse inserted in the interior of the transformer will 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 electrical 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 batte
17. mportance of the contents of the Handling Instructions and fully understands the meaning of the precautions listed on the Caution Plate and Name Plate attached to each tool A Handling Instructions Salespersons must be thoroughly familiar with the contents of the Handling Instructions in order to give pertinent advice to the customer In particular they must have a thorough understanding of the precautions for use of the cordless tools which are different 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 use only the exclusive Model UC 3SFL charger provided with the tool Because of the designed rapid charging feature about 30 minutes use of other battery chargers is hazardous 3 Connect the charger to an AC power outlet only Use of any other power source DC outlet fuel powered generator etc will cause the charger to overheat and burn out 4 Do not use any voltage increasing equipment transformer etc between the power source and the charger If the charger is used with voltage higher than that indicated on the unit it will not function properly 5 Conduct battery charging at an a
18. nd fastening performance comparison per charge Working capacity 1 Drilling Type of work Maker Model 0 250 500 750 1000 0 50 100 150 200 sec pc T1 0 3 64 Mild steel gt DB 3DL 210 4 7 5 HSS 7 n drill bit bid 48 lt High speed Wood screw 20mm 25 32 HITACHI DB 3DL 70 6 5 3 5mm dia 6 Z American pine lt Low speed gt C 60 6 7 8mm 5 16 Machine screw 7 HITACHI DB 3DL 1000 0 8 5mm 1 5 C 760 0 8 lt High speed gt Number of machine screws fastened per charge 1 Number of holes or fasteners per charge The above table shows an example of test data obtained using the battery which is standard for this tool As actually measured values listed in the above table may vary depending on the sharpness of the drill bit workpiece hardness particularly in wood materials moisture content of wood charging condition operator skill etc This data should be used as a comparative guide only 8 PRECAUTIONS SALES PROMOTION 8 1 Safety Instructions In the interest of promoting the safest and most efficient use of the Model DB 3DL cordless driver drill 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 i
19. oroughly familiar with these drawbacks in order to properly advise the customer in the most efficient use of the tool A Suggestions and precautions for the efficient use of the tool 1 Use the cordless driver drill for comparatively light work Because they are battery driven the output of the motor in cordless driver drills is rather low in comparison with conventional electric power tools Accordingly they are not suitable for continuous drilling of many holes in succession or for drilling into particularly hard materials which creates a heavy load Salespersons should recommend conventional electric power tools for such heavy work 2 The work which requires particularly strong torque should be conducted at low speed Instruct the customer that the work which requires particularly strong torque should be done at low speed Because it is easy to lock the motor at high speed 3 Do not insert a foreign object into body A foreign object inserted through a hole may cause a failure Please instruct customers to never insert a foreign object into body 4 Avoid Locking of the motor Locking of the motor will cause an overload current that could result in burning of the motor and or rapid deterioration of the battery 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 reve
20. portion of the Gear Case 11 At this time mount the Lock Ring 15 so that the Concave portion stepped protrusion faces forward b Mount the Needle Roller Set 6 pcs 16 Gear Case 11 NOTE Do not apply grease to the Lock Ring 15 and the Needle Roller Set 6 pcs 16 Stepped portion Fig 5 gt 4 Reassembly of the deceleration mechanism a Apply 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 properly b Mount the parts from the Pin Set 3 pcs 13 to Washer A 28 to the part assembled in the following 2 in order See Fig 6 1 Mount the Pin Set 3 pcs 13 and the Steel Ball D3 14 2 Pay attention to the mounting direction of the Ring Gear 20 Carrier 18 Pinion C 22 and Pinion B 25 See Fig 6 Fig 6 b Reassembly of the drive unit a Pay attention to the mounting direction of the Motor 31 and the Switch W Lock 40 Insert the red marked terminal of the Motor 31 into the terminal at the lock switch side of the Switch W Lock 40 At this time insert each terminal of the Motor 31 between the terminal and the convex portion of the Switch W Lock 40 See Fig 7 Lock switch Enlarged section A Switch W Lock 40 31 Red mark Terminal Terminal Convex portion Fig 7 b Mount the Motor Spacer
21. rse 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 with the Model DB 3DL is 1 5 Ah the actual capacity may vary within 10 of that value depending on the ambient temperature during use and charging and the number of times the batteries have been recharged It should be noted that other factors which may have a bearing on the amount of work possible per charge are the working conditions ambient temperature type and moisture content of the workpiece sharpness of the drill bit etc and the operational skill of the user 6 Precautions in the use of HSS drill bits For example although the Model DB 3DL is designed for drilling capacities of 2 mm 5 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 through the material For this reason the customer should be cautioned to reduce the thrust on the main body of the drill when drilling completely through the material to avoid locking the tool Repeated locking of the drill causes excessive current flow from the batteries which not only decreases the amount of work possible per charge but could also result in burning of the motor 0 Suggestions and precautions for the efficient use of the charger and storage battery If the Type EBM 315
22. ry and charger to permit rapid charging Incorrect parts replacement and or wiring will cause malfunctions which could result 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 the authorized service center when they are 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 Plate The following cautions are listed on the Name Plate attached to each Type EBM 315 storage battery For Europe CAUTION e Read thoroughly HANDLING INSTRUCTIONS before use e Do not disassemble nor throw into fire For the U S A and Canada CAUTION For safe operation see instruction manual Use HITACHI charger recommended in instruction manual for recharging 8 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 th
23. storage battery is exposed to direct sunlight for an extended period or if the tool has just been operated for a long time charging may not be possible if the temperature of the battery is above 40 C 104 F In such a case the customer should be advised to place the battery in a shaded area with a good airflow and allow sufficient cooling before recharging This phenomenon is common to all existing batteries and chargers which employ temperature sensitive overcharge protection devices The cooling time required before recharging can be accomplished varies from a few minutes to about 30 minutes depending on the load duration of use and ambient temperature Sit 9 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 will result in danger of accidental turning of the motor 9 1 Precautions in Disassembly and Reassembly The Bold numbers in the description below correspond to the item numbers in the Parts List and the exploded assembly diagram for the Model DB 3DL 9 1 1 Disassembly 1 Removal of Handle A B Set 49 a Removal of the Clip 48 2 pcs Insert a flat blade screwdriver in the dent of the Clip 48 and remove the Clip 48 Fig 1 b Remove the Tapping Screws W Flange D4 x 20 Black 37 c Grip the battery insertion part and open Handle A B Set 49 Since there are latches in Handle A B Set
24. wires of the Switch W Lock 40 and the Printed Circuit Board 41 are soldered to the Terminal 44 Unsolder and remove the internal wires NOTE Do not remove the Printed Circuit Board 41 from the Switch W Lock 40 9 1 2 Reassembly Reassembly can be accomplished by following the disassembly procedure in reverse However special attention should be given to the following items 1 Reassembly of the power supply unit Perform wiring according to the wiring diagram Fig 3 Terminal 44 Minus side __ Black SS NS Terminal 44 Plus side 2 Terminal Support 46 Fig 3 514 2 Reassembly of the clutch unit a Mount Washer D 9 and the Spring 8 to the Gear Case 11 b Mount the Nut 7 to the Gear Case 11 See Fig 4 Align the register mark i on the Nut 7 with the register mark on the Gear Case 11 Turn the Nut 7 about 1 1 12 turns clockwise so that the register mark ii on the Nut 7 is aligned with the register mark on the Gear Case 11 Check that the Y surface of the Nut 7 is aligned with the Z surface of the Gear Case 11 Mounting start position Mounting end position Register mark i Register mark ii Register mark Fig 4 3 Reassembly of the manual tightening mechanism a Mount the Lock Ring 15 to the Gear Case 11 Lock Ring 15 Nese 6 pcs 16 so that the protrusion of the Lock Ring 15 alignes with the concave
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