Hitachi WH 14DSL Technical Data And Service Manual
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Hitachi WH 14DSL Technical Data And Service Manual

Cordless impact driver / wrench
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CORDLESS IMPACT DRIVER
CORDLESS IMPACT WRENCH
LIST Nos. WH 14DSL: G894
WR 14DSL: G895
WH 14DSL
WR 14DSL
WH 14DSL
Feb. 2008
MODELS
WH 14DSL
WR 14DSL
WR 14DSL
W

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  • Page 1 MODELS WH 14DSL WR 14DSL CORDLESS IMPACT DRIVER WH 14DSL CORDLESS IMPACT WRENCH WR 14DSL WH 14DSL WR 14DSL LIST Nos. WH 14DSL: G894 Feb. 2008 WR 14DSL: G895...
  • Page 2 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: WH 14DSL Competitors Symbols Utilized Company Name Model Name...

  • Page 3: Table Of Contents

    10. REPAIR GUIDE------------------------------------------------------------------------------------------------------------ 26 10-1. Precautions in Disassembly and Reassembly ------------------------------------------------------------ 26 10-2. Precautions in Disassembly and Reassembly of Battery Charger ----------------------------------- 41 11. STANDARD REPAIR TIME (UNIT) SCHEDULES --------------------------------------------------------------- 42 Assembly Diagram for WH 14DSL Assembly Diagram for WR 14DSL...

  • Page 4: Product Name

    Hitachi Cordless Impact Wrench, Model WR 14DSL 2. MARKETING OBJECTIVE The new Models WH 14DSL and WR 14DSL are the compact-type cordless impact driver/wrench developed to reinforce our 14.4-V product lines and also to meet the market demands. These new models have powerful tightening torque thanks to the optimized impact timing, hook and protector (standard accessories).

  • Page 5: Selling Points

    • The Model WH 14DSL is equipped with the overdischarge and overcurrent protection circuit to prevent overdischarge (overuse) of the battery.
  • Page 6 Model WR 14DSL Compact body: 152 mm in overall length Tightening torque 165 N • • Convenient for continuous operation in narrow places (1,685 kgf • Tool tip is structured without Switchable impact rate screws. The protector is a between save mode and standard accessory.

  • Page 7: Selling Point Descriptions

    Selling points of the Models WH 14DSL and WR 14DSL: (1) Equipped with the lightweight and high-capacity (3.0 Ah) lithium-ion battery • Thanks to the adoption of the lithium-ion batteries, the Models WH 14DSL and WR 14DSL are substantially lighter than the current models equipped with Ni-MH batteries.
  • Page 8 It is not faulty. (4) Built-in white LED light Each of the Models WH 14DSL and WR 14DSL incorporates the white LED light. It is very convenient for operation in dark places. NOTE: •...
  • Page 9 Selling points of the Model WH 14DSL • High tightening speed and powerful torque: 145 N m (1480 kgf cm, 1280 in-lbs.) • • (1) Tightening time comparison Figure 1 shows the time required for tightening a wood screw (5.3 mm dia. x 120 mm length) into a lauan workpiece.
  • Page 10 Selling points of the Model WR 14DSL • Powerful tightening torque: 165 N m (1680 kgf cm, 1460 in-lbs.) • • (1) Tightening torque Figure 3 shows the torque required for tightening an M16 F10T bolt in 3 seconds with a hexagon socket (40 mm long).

  • Page 11: Specifications

    6. SPECIFICATIONS 6-1. Specifications Models WH 14DSL/WR 14DSL Model Cordless impact driver Cordless impact wrench WH 14DSL WR 14DSL Item Small screw M4 to M8 (5/32" to 5/16")* Ordinary bolt M6 to M16 (1/4" to 5/8") Capacity Ordinary bolt M5 to M14 (3/16" to 9/16") High-strength bolt M6 to M12 High-strength bolt M5 to M12 (3/16"...

  • Page 12: Optional Accessories

    6-2. Optional Accessories (1) Optional accessories for the Model WH 14DSL • Plus driver bit Bit No. Code No. No. 2 992671 No. 3 992672 50 mm (2”) • Hexagon socket Stamped figures Part name Stamped figure Code No. (mm)
  • Page 13 (2) Optional accessories for the Model WR 14DSL • Dimensions and applicable bolts for each hexagon socket Shape B Shape C Shape D • Dimensions and applicable bolts for each long socket Shape B Shape D -10-...
  • Page 14 • Bit adaptor (Code No. 991476) 12.7 mm (1/2”) 6.35 mm (1/4”) 45 mm (1-25/32”) Overall length Part name Code No. (mm) Plus hd. 45 (1-25/32”) 983005 driver bit 65 (2-9/16”) 983006 No. 2 Plus hd. 45 (1-25/32”) 983010 driver bit 65 (2-9/16”) 983011 No.

  • Page 15: Comparisons With Similar Products

    7. COMPARISONS WITH SIMILAR PRODUCTS 7-1. Specification Comparisons (Cordless impact driver) Maker HITACHI Item Model WH 14DSL WH 14DL M 4 to M 8 M 4 to M 10 M 4 to M 8 Small screw (5/32" to 5/16") (5/32" to 3/8") (5/32"...

  • Page 16: Specification Comparisons (Cordless Impact Wrench)

    7-2. Specification Comparisons (Cordless impact wrench) Maker HITACHI Item Model WR 14DSL WR 14DL M 6 to M 16 M 10 to M 16 Ordinary bolt (1/4" to 5/8") (3/8" to 5/8") M 6 to M 12 M 8 to M 14 High-strength bolt (1/4"...

  • Page 17: Tightening Torque

    7-3. Tightening Torque 7-3-1. Tightening torque characteristic comparisons (1) Impact driver (14.4 V) Test conditions Bolt: M14 x 50 mm, high-strength bolt Steel plate: SS34P Thickness 25 mm Accessory tool: Hexagon socket (length: 40 mm, width across flat: 19 mm) (2) Impact wrench (14.4 V) Test conditions Bolt: M16 x 55 mm (5/8"...
  • Page 18 7-3-2. Screw diameter and appropriate tightening torque Generally speaking, the appropriate tightening torque for a screw can be determined by the strength grade of the screw and the material tightened. Tables 1 and 2, and Fig. 4 below list data relative to the strength grade of various screws and the appropriate tightening torque.
  • Page 19 Yield point or durable force: 12.9 320 N/mm (32 kgf/mm , 45,500 psi) Tensile strength of the bolt: 400 N/mm (40 kgf/mm , 56,900 psi) • Model WH 14DSL Tightening in the save mode Tightening in the power mode Fig. 5-1 -16-...
  • Page 20 • Model WR 14DSL Tightening in the save mode Tightening in the power mode Fig. 5-2 -17-...

  • Page 21: Tightening Time

    7-4. Tightening Time The performance of the Model WH 14DSL is superior to the competitors thanks to the large hammer and the optimized impact timing. Tightening time comparison is shown below. The data below are intended for reference purposes only because actual tightening time will vary depending on hardness of the workpiece, ambient temperature, characteristics of the battery, etc.

  • Page 22: Number Of Screws Or Bolts Driven

    Number of screws or bolts driven (Cordless impact driver) Model HITACHI HITACHI Tightening condition WH 14DSL WH 14DL BSL 1430 BCL 1430 BL 1430 Battery (Nominal...

  • Page 23: Precautions In Sales Promotion

    8. PRECAUTIONS IN SALES PROMOTION 8-1. Safety Instructions In the interest of promoting the safest and most efficient use of the Models WH 14DSL and WR 14DSL by all our customers, it is very important that at the time of sale the salesperson...
  • Page 24 If thrown into a fire, the batteries may explode. (11) Effect of permanent magnet Each of the Models WH 14DSL and WR 14DSL has a strong permanent magnet in its motor. Please instruct the customers about adhesion of dust to the Models WH 14DSL and WR 14DSL and effect on electronic devices as follows.
  • Page 25 For the U.S.A. and Canada CAUTION • For safe operation, see Instruction Manual. • Charge HITACHI rechargeable batteries Types BSL 14 and BSL 18 series. Other types of batteries may burst causing personal injury and damage. • Charge between 32 °F and 104 °F. Rest 15 minutes between the charging of batteries.

  • Page 26: Tightening Torque Inspection Prior To Operation

    As described and shown in Para.7-3-3, the output tightening torque of which the Models WH 14DSL and WR 14DSL are capable in excess of the rated tightening torque of certain bolts and screws. Accordingly, if the tightening time is prolonged for such bolts and screws, it could cause damage to their threads or, in the worst case, cause them to be sheared off.

  • Page 27: Suggestions And Precautions For The Efficient Use Of The Charger

    (4) Different materials being tightened When a bolt is tightened into a soft material such as aluminum, plastic, wood, etc., the tightening torque is considerably less than when the bolt is tightened into a hard material such as steel. (5) Different tightening conditions The tightening torque may vary in accordance with bolt torque coefficient (depending on manufacturing process specified by bolt manufacturers), bolt grade and bolt length, even though the dimensions of the bolts are the same.

  • Page 28: Other Precautions

    9. OTHER PRECAUTIONS (1) Check for cracks or other damage on the socket Cracks or any other faults on the socket are very hazardous. In addition, cracks or other damage to accessories will cause loss of tightening torque efficiency. Advise the customer to inspect accessories often, and ensure there are no abnormalities.

  • Page 29: Repair Guide

    10-1. Precautions in Disassembly and Reassembly The [Bold] and <Bold> numbers correspond to the item numbers in the Parts List and the exploded assembly diagram. ([ ]: WH 14DSL, < >: WR 14DSL) 10-1-1. Disassembly (1) Removal of Guide Sleeve (D) [4] (Model WH 14DSL only) Remove the Retaining Ring [1], Washer (D) [2], Guide Spring (D) [3] and Guide Sleeve (D) [4] in order by following the procedure shown in Figs.
  • Page 30 (2) Removal of Front Cap (F) [5] <1> and Protector (J) [6] <2> Insert a small flat-blade screwdriver between Front Cap (F) [5] <1> and Protector (J) [6] <2> and remove them from the Hammer Case [7] <3>. (3) Removal of Hook (A) [41] <38> Remove the M4 Truss Hd.
  • Page 31 (7) Disassembly of the hammer assembly Mount the hammer assembly onto Push down the J-297 base for washer (S). Spindle (D) [17] <14> With a hand press, push down the top of Spindle (D) [17] <14> to Washer (S) [15] <12> Hammer Spring compress Hammer Spring (D) (D) [14] <11>...
  • Page 32 (8) Removal of the switch assembly Remove the two Machine Screws (W/Sp. Washer) M3 x 5 [37] <34> that secure the flag terminal and then disconnect the internal wires (red and black) of the Brush Block [31] <28> from the DC-Speed Control Switch [45] <42>. NOTE: Do not disconnect the three FET internal wires soldered to the DC-Speed Control Switch [45] <42>.
  • Page 33 (10) Removal of the Armature Ass’y DC 14.4V [26] <23> Support Inner Cover (D) [25] <22> so that it does not contact the fan of the Armature Ass’y DC 14.4V Ring Gear (E) [20] <17> [26] <23>. With a hand press, push down the tip O-ring (S-42) [21] <18>...
  • Page 34 • Solder the internal wires (black and white) coming from the bottom of the Controller [46] <43> to the terminal support. At this time, connect the internal wire (black) to the (-) terminal and the internal wire (white) to the LD terminal of the terminal support (Fig. 11 (b)).
  • Page 35 Model WH 14DSL/WR 14DSL. In such case, replace the DC-Speed Control Switch [45] <42> with new one (Code No.
  • Page 36 Pass the internal wire (white) Set the rotation switch-over lever on between the ribs. housing (A) to "P" before reassembly. Controller [46] <43> Pass the internal wire (red) first then the internal wire (brown) between the ribs. Pass the internal wire (brown) between the housing and the Controller [46] <43>.
  • Page 37 (2) Mounting the mechanical parts (a) Put Washer (S) [15] <12> onto the shaft of Spindle (D) [17] <14> and mount Hammer (F) [11] <8> containing the twenty-eight Steel Balls D3.175 [12] <9>, Washer (J) [13] <10> and Hammer Spring (D) [14] <11> to Spindle (D) [17] <14>. (b) Align the top of the cam groove on Spindle (D) [17] <14>...
  • Page 38 Side Yoke [27] <24> Magnet (D) [28] <25> Brush Block [31] <28> Dust Guard Fin (C) [30] <27> Yoke (A) [29] <26> Concave portion Convex portion Dust Guard Fin (C) [30] <27> Concave portion Protrusion Flange Fig. 14 Fig. 15 (f) Mounting the hammer case Put Anvil (D) [9] or Anvil (B) <6>...
  • Page 39 (g) Mounting the hammer assembly to the armature assembly Push Inner Cover (D) [25] <22> in the Hammer Case [7] <3> being careful of proper engagement between the Idle Gear Set (2 pcs.) [18] <15> of the hammer assembly (check that Washer (E) [22] <19>...
  • Page 40 Pay attention to the following items in reassembly. • Adjust the convex portion of Dust Guard Fin (C) [30] <27> to the concave portion of the Brush Block [31] <28> (see Fig. 15). • Adjust the concave portions (for locking) of Magnet (D) [28] <25> to the protrusions of housing (A) (see Figs.
  • Page 41 Be sure to mount the Hammer Case [7] <3> to housing (A) securely. Hammer Case [7] <3> Mount the LED light to this position. Pass the internal wire of the LED light between the protrusion (for locking) of the Hammer Case [7] <3> and the housing. Fig.
  • Page 42 Silicone rubber application area (diagonally shaded area) Position the blade of Dust Guard Fin (C) [30] <27> under the rib of housing (A). Packing [44] <41> Attach the Strap (Black) [49] <45> to the boss. Lock Nut M4 (Black) [43] <40> Packing [44] <41>...
  • Page 43 Put the LED light in the rib of the protector. Fig. 22 Push down. (6) Mounting Guide Sleeve (D) [4] (Model WH 14DSL only) Insert the two Steel Balls D3.5 [8] into the hole of Anvil (D) [9]. Mount Guide Sleeve...

  • Page 44: Precautions In Disassembly And Reassembly Of Battery Charger

    (b) HITACHI MOTOR GREASE No. 29 • Two Steel Balls D3.5 [8] (Model WH 14DSL only) • Sliding section between Anvil (D) [9] and Guide Sleeve (D) [4] (Model WH 14DSL only) • Sliding section between housing (A) assembly and Lever (C) [36] <33>...

  • Page 45: Standard Repair Time (Unit) Schedules

    11. STANDARD REPAIR TIME (UNIT) SCHEDULES Variable MODEL 60 min. Fixed Work Flow WH 14DSL Hook (A) Switch Ass’y Housing (A).(B) Set Inner Cover Armature Ass’y Magnet (D) Brush Block General Assembly Hammer (F) Hammer Guide Spring Steel Ball Case...
  • Page 46 Variable MODEL 60 min. Fixed Work Flow WR 14DSL Hook (A) Switch Ass’y Housing (A).(B) Set Inner Cover Armature Ass’y Magnet (D) Brush Block General Assembly Hammer (F) Hammer Steel Ball Case Hammer Anvil (C) Spring (D) Ring Gear Spindle (D) Idle Gear Set Needle Roller...
  • Page 47 LIST NO. G894 CORDLESS IMPACT DRIVER Model WH 14DSL (E1) 504 505 506...
  • Page 48 PARTS WH 14DSL ITEM CODE NO. DESCRIPTION REMARKS USED 315-984 RETAINING RING 315-983 WASHER (D) 321-657 GUIDE SPRING (D) 322-717 GUIDE SLEEVE (D) 327-766 FRONT CAP (F) 327-765 PROTECTOR (J) 327-003 HAMMER CASE 319-535 STEEL BALL D3.5 (10 PCS.) 329-709...

  • Page 49: Standard Accessories

    PARTS WH 14DSL ITEM CODE NO. DESCRIPTION REMARKS USED NAME PLATE 306-952 STRAP (BLACK) 329-083 BATTERY BSL 1430 (EUROPE) STANDARD ACCESSORIES ITEM CODE NO. DESCRIPTION REMARKS USED CHARGER (MODEL UC 18YRSL) 329-440 CASE ASS'Y INCLUD. 503-506 324-093 LATCH (DARK GRAY)
  • Page 50 OPTIONAL ACCESSORIES WH 14DSL ITEM CODE NO. DESCRIPTION REMARKS USED 321-823 DRILL CHUCK AND ADAPTER SET INCLUD. 616, 618 309-922 GREASE FOR IMPACT DRIVER (500G) 992-671 + DRIVER BIT (B) NO.2 50L 992-672 + DRIVER BIT (B) NO.3 50L 996-177 NON-MAGNETIC HEX.
  • Page 51 LIST NO. G895 CORDLESS IMPACT WRENCH Model WR 14DSL (E1) 504 505 506...
  • Page 52 HOUSING (A). (B) SET (RED) 329-828 HOUSING (A). (B) SET (BLUE) 326-782 LEVER (C) 994-532 MACHINE SCREW (W/SP. WASHER) M3X5 321-661 PUSHING BUTTON (A) HITACHI LABEL 326-783 LEVER (B) 326-790 HOOK (A) 327-001 M4 TRUSS HD. SCREW (BLACK) 327-002 LOCK NUT M4 (BLACK)
  • Page 53 STANDARD ACCESSORIES WR 14DSL ITEM CODE NO. DESCRIPTION REMARKS USED CHARGER (MODEL UC 18YRSL) 329-440 CASE ASS'Y INCLUD. 503-506 324-093 LATCH (DARK GRAY) 324-096 KNOB (L) DARK GRAY 324-090 HANDLE (DARK GRAY) 324-099 KNOB (R) DARK GRAY 2 - 08 - 3 - *ALTERNATIVE PARTS...

  • Page 54: Optional Accessories

    CODE NO. DESCRIPTION REMARKS USED CORNER ATTACHMENT ASS'Y EW-14R INCLUD. 602-618 955-300 HOUSING 955-301 METAL 955-302 SPINDLE HITACHI LABEL 955-303 BEARING RACE 955-304 NEEDLE THRUST BEARING (NTA-1413) 955-305 COVER 955-306 NEEDLE BEARING (NTN BK1012) 948-227 RETAINING RING FOR D47 HOLE 955-307...

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