Hitachi DS 14DSFL Manual

International Sales Division
The Models DS 14DSFL and DS 18DSFL are cordless driver drills equipped with an 14.4 V and 18 V
lithium-ion battery, respectively. The new Models DS 14DSFL and DS 18DSFL are low spec version of DS
14DSAL and DS 18DSAL.
Vigorous sales promotion and expanded market share are anticipated with the introduction of the new Models
DS 14DSFL and DS 18DSFL. The key features of the Models DS 14DSFL and DS 18DSFL are as follows:
(1) Improved overload durability
(2) 22-position torque adjustable clutch (Max. clutch torque: 6.0 N•m)
(3) Equipped with safe and secure lithium-ion battery
We aim to expand our market share with the new Models DS 14DSFL and DS 18DSFL.
LIST Nos.
DS 14DSFL : H891
DS 18DSFL : H892
Sep. 2010
PRODUCT NAME
Hitachi 14.4 V Cordless Driver Drill
Model DS 14DSFL
Hitachi 18 V Cordless Driver Drill
Model DS 18DSFL
•Tightening and loosening wood screws, self-tapping screws and machine screws
•Drilling into wood, plastic, mild steel and aluminum materials
MARKETING OBJECTIVE
APPLICATIONS
SELLING POINTS
[NEW FEATURES]
Improved overload durability
(improved cooling efficiency)
22-position torque adjustable clutch
Soft-grip handle
Safe and secure lithium-ion battery
(BSL 1415, BSL 1815)
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.
D
[DS 18DSFL ]

REMARK:
•For more information about HANDLING INSTRUCTIONS, visit our website at:
http://www.hitachi-koki.com/manual_view_export/
•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:
Model DS 14DSFL
Competitors
Symbols Utilized
Company Name Model Name
M MAKITA BDF343
Model DS 18DSFL
Competitors
Symbols Utilized
Company Name Model Name
M MAKITA BDF453

CONTENTS
Page
SELLING POINTS -------------------------------------------------------------------------------------------------------------- 1
SPECIFICATIONS -------------------------------------------------------------------------------------------------------------- 3
1. Specifications --------------------------------------------------------------------------------------------------------------------------------- 3
COMPARISON WITH SIMILAR PRODUCTS---------------------------------------------------------------------------- 5
1. Comparison of Specifications --------------------------------------------------------------------------------- 5
2. Comparison of Drilling and Fastening Performance per Charge ------------------------------------- 7
PRECAUTIONS ON SALES PROMOTION ------------------------------------------------------------------------------ 9
1. Safety Instructions ----------------------------------------------------------------------------------------------- 9
2. Inherent Drawbacks of Cordless Driver Drills Requiring
Particular Attention during Sales Promotion ------------------------------------------------------------- 11
REPAIR GUIDE---------------------------------------------------------------------------------------------------------------- 13
1. Precautions on Disassembly and Reassembly --------------------------------------------------------- 13
2. Precautions on Disassembly and Reassembly of the Battery Charger --------------------------- 21
STANDARD REPAIR TIME (UNIT) SCHEDULES-------------------------------------------------------------------- 22
Assembly Diagram for DS 14DSFL
Assembly Diagram for DS 18DSFL

-1-
•1.76 N•m {18 kgf•cm} intermittent load test (14.4 V)
•2.06 N•m {21 kgf•cm} intermittent load test (18 V)
Improved overload durability (improved cooling efficiency)
The Models DS 14DSFL and DS 18DSFL ensure durability in continuous operation, thanks to of a powerful
motor and improved air ducts.
SELLING POINTS
70 80
120 140

-2-
22-position torque adjustable clutch (Max. clutch torque: 6.0 N•m)
The 22-position torque adjustable clutch ensures fine torque adjustment for better operability.
Clutch dial position Tightening torque
1 1.0 ± 0.5 N•m {10 ± 5 kgf•cm }
4 1.7 ± 0.6 N•m {17 ± 6 kgf•cm }
10 3.1 ± 0.7 N•m {31 ± 7 kgf•cm }
13 3.8 ± 0.8 N•m {38 ± 8 kgf•cm }
19 5.3 ± 0.9 N•m {53 ± 9 kgf•cm }
22 6.0 ± 1.0 N•m {60 ± 10 kgf•cm }
* There may be some differences in operation depending on shapes of screws and the
workpieces used.
Conduct a test before actual driving.
Soft-grip handle
The handle is widely covered with soft-touch elastomer (rubber-like soft resin). It is slip-resistant and
securely fits in the palm of a hand even if the gripping hand sweats.
Safe and secure lithium-ion batteries (Types BSL 1415 and BSL 1815)
The new 1.5 Ah Types BSL 1415 and BSL 1815 Lithium-ion Batteries were developed for light-duty work.
Both batteries are equipped with an overdischarge protection circuit, overload protection circuit, overheat
protection circuit and voltage monitoring circuit for each cell to prevent reduced battery service life due to
overdischarge (overuse) or overcharge (excessive charging). These protection circuits make it possible to
safely use the batteries.
Precautions on using the Types BSL 1415 and BSL 1815 Lithium-ion Batteries
The Types BSL 1415 and BSL 1815 Lithium-ion Batteries are both equipped with a protective function that
automatically stops output to prolong battery service life. The motor may stop automatically in any of cases
(1), (2) and (3) below, even if the switch is held down during operation. This is due to activation of the
protective function. The batteries are not faulty.
Protective function Source of trouble Corrective action
(1) Overdischarge
protection circuit
Drop in battery voltage to about:
8 V/BSL 1415
10 V/BSL 1815
Charge the battery immediately.
(2) Overload
protection circuit Heavy-duty work Release the switch and eliminate
the cause of the overload problem.
(3) Overheat
protection circuit
Continuous operation
or heavy-duty work
Remove the battery from the tool
and allow it to cool down.

-3-
1. Specifications
Model
Item DS 14DSFL
Capacity
Screw driving Machine screw----------- 6 mm (1/4")
Wood screw ------------- 6.2 mm dia. x 63 mm (#14 x 2-1/2")
Drilling Metal ------ Mild steel --- 12 mm (15/32") [Thickness 1.6 mm (1/16")]
Wood --------------------- 30 mm (1-3/16") [Thickness 18 mm (11/16")]
Keyless chuck
(10VLRH-N)
Mount type ----------------------Screw-on (UNF 1/2" - 20)
Diameter-------------------------0.8 to 10 mm (1/32" to 3/8")
Rotation speed
(No-load) Low: 0 to 450 min-1, High: 0 to 1,250 min-1
Torque
Slip torque ----------------------1 to 6.0 N•m (10 to 60 kgf•cm, 9 to 52 in-lbs.) [22 stages]
Max. torque ---------------------Low: 34 N•m (316 kgf•cm, 274 in-lbs.)
High: 7 N•m (71 kgf•cm, 62 in-lbs.)
Type of motor Fan-cooled DC magnet motor
Type of switch Trigger switch with pushing button for forward and reverse rotation changeover
(with brake)
Enclosure
Body -----------------------------Glassfiber-reinforced polyamide resin (black)
and thermoplastic elastomer (green)
Battery --------------------------Polycarbnate resin (black)
Charger -------------------------ABS resin (black)
Battery
(Type BSL 1415)
Sealed cylindrical lithium-ion storage battery
Nominal voltage ----------------DC 14.4 V
Nominal life ---------------------Charging/discharging: Approx. 1,000 times
Nominal capacity ---------------1.5 Ah
Charger
(Model UC 18YGSL)
Overcharge protection system:
(1) Battery surface temperature detection (by thermostat or thermistor)
(2) Stop current detection
Power input: 60 W
Charging time: Approx. 40 minutes [for Type BSL 1415 Battery at 20°C (68°F)]
Operable ambient temperature range: 0°C to 50°C (32°F to 122°F)
The maximum allowable temperature of the Type BSL 1415 Battery is 50°C (122°F).
Indication method of battery charging function
Net Main body unit (including battery) ------------------------------------------- 1.5 kg (3.3 lbs.)
Charger unit (UC 18YGSL, including cord) --------------------------------- 0.4 kg (0.9 lb.)
Weight
Gross DS 14DSFL (2LEGK) - -------------------------------------------------------- 4.0 kg (8.7 lbs.)
DS 14DSFL (2LEGX) - -------------------------------------------------------- 4.0 kg (8.7 lbs.)
2LEGK
• Charger (UC 18YGSL) ------------------------------------------------------------- 1
• Battery (BSL 1415) ----------------------------------------------------------------- 2
• Phillips (plus) driver bit (No. 2) --------------------------------------------------- 1
• Case ------------------------------------------------------------------------------------ 1
Standard
accessories
2LEGX
• Charger (UC 18YGSL) ------------------------------------------------------------- 1
• Battery (BSL 1415) ----------------------------------------------------------------- 2
• Torchlight (UB 18DAL)-------------------------------------------------------------- 1
• Phillips (plus) driver bit (No. 2) --------------------------------------------------- 1
• Case ------------------------------------------------------------------------------------ 1
SPECIFICATIONS

-4-
Model
Item DS 18DSFL
Capacity
Screw driving Machine screw ------------ 6 mm (1/4")
Wood screw --------------- 6.8 mm dia. x 50 mm (#16 x 2")
Drilling Metal ------- Mild steel --- 13 mm (1/2") [Thickness 1.6 mm (1/16")]
Wood ----------------------- 38 mm (1-1/2") [Thickness 18 mm (11/16")]
Keyless chuck
(13VLRS-N)
Mount type ----------------------Screw-on (1/2" - 20 UNF)
Diameter-------------------------2.0 to 13 mm (5/64" to 1/2")
Rotation speed
(No-load) Low: 0 to 450 min-1, High: 0 to 1,250 min-1
Torque
Slip torque-----------------------1 to 6.0 N•m (10 to 60 kgf•cm, 9 to 52 in-lbs.) [22 stages]
Max. torque ---------------------Low: 41 N•m (418 kgf•cm, 364 in-lbs.)
High: 10 N•m (101 kgf•cm, 88.7 in-lbs.)
Type of motor Fan-cooled DC magnet motor
Type of switch Trigger switch with pushing button for forward and reverse rotation changeover
(with brake)
Enclosure
Body -----------------------------Glassfiber-reinforced polyamide resin (black)
and thermoplastic elastomer (green)
Battery --------------------------Polycarbonate resin (black)
Charger -------------------------ABS resin (black)
Battery
(Type BSL 1815)
Sealed cylindrical lithium-ion storage battery
Nominal voltage ----------------DC 18 V
Nominal life ---------------------Charging/discharging: Approx. 1,000 times
Nominal capacity ---------------1.5 Ah
Charger
(Model UC 18YGSL)
Overcharge protection system:
(1) Battery surface temperature detection (by thermostat or thermistor)
(2) Stop current detection
Power input: 60 W
Charging time: Approx. 40 minutes [for Type BSL 1815 Battery at 20°C (68°F)]
Operable ambient temperature range: 0°C to 50°C (32°F to 122°F)
The maximum allowable temperature of the Type BSL 1815 Battery is 50°C (122°F).
Indication method of battery charging function
Net Main body unit (including battery) ------------------------------------------- 1.7 kg (3.7 lbs.)
Charger unit (UC 18YGSL, including cord) --------------------------------- 0.4 kg (0.9 lb.)
Weight
Gross DS 18DSFL (2LEGK) - -------------------------------------------------------- 4.2 kg (9.3 lbs.)
Standard
accessories 2LEGK
• Charger (UC 18YGSL) ------------------------------------------------------ 1
• Battery (BSL 1815) ---------------------------------------------------------- 2
• Phillips (plus) driver bit (No. 2) --------------------------------------------- 1
• Case --------------------------------------------------------------------------- 1

-5-
1. Comparison of Specifications (Superior specifications: )
HITACHI
Maker
Model
Item DS 14DSFL DS 14DCL
M
Machine screw
6 mm (1/4”) 6 mm (1/4”) 6 mm (1/4”)
Screw
driving Wood screw 6.0 mm dia. x 75 mm
(#14 x 3”)
6.0 mm dia. x 75 mm
(#14 x 3”)
5.1 mm dia. x 63 mm
(#11 x 2-1/2”)
Mild steel 12 mm (15/32”) 12 mm (15/32”) 10 mm (3/8”)
Max. capacity
Drilling Soft wood 30 mm (1-3/16”) 30 mm (1-3/16”) 25 mm (1”)
Low 0 to 450 min-1 0 to 450 min-1 0 to 400 min-1 Rotation
speed High 0 to 1,250 min-1 0 to 1,250 min-1 0 to 1,300 min-1
1.0 to 6.0 N•m
(10 to 60 kgf•cm)
(9 to 52 in-lbs.)
1.0 to 6.0 N•m
(10 to 60 kgf•cm)
(9 to 52 in-lbs.)
Not indicated
Slip torque
22 positions 22 positions 16 positions
Max. torque
34 N•m
(347 kgf•cm)
(300 in-lbs.)
31 N•m
(316 kgf•cm)
(274 in-lbs.)
36 N•m
(367 kgf•cm)
(319 in-lbs.)
Type Double sleeve Double sleeve Single sleeve Drill
chuck Capacity 10 mm (3/8”) 10 mm (3/8”) 10 mm (3/8”)
Type Variable speed Variable speed Variable speed
Switch Electric brake Equipped Equipped Equipped
Automatic spindle lock None None Equipped
Reversing switch Push-button Push-button Push-button
Handle shape T-type T-type T-type
Soft-grip handle Equipped Equipped Equipped
Belt Hook Equipped None None
Strap None None None
Nominal
capacity 1.5 Ah 1.5 Ah 1.5 Ah
(Actual 1.1Ah)
Nominal voltage
14.4 V (Li-ion) 14.4 V (Li-ion) 14.4 V (Li-ion)
Battery
Charging time* 40 min.
(UC 18YGSL)
60 min.
(UC 18YKL)
30 min.
(DC 18SD)
Overall length 219 mm (8-5/8”) 218 mm (8-19/32”) 192 mm (7-9/16”)
Overall height 226 mm (8-57/64”) 233 mm (9-11/64”) 226 mm (8-57/64”) Dimensions
Overall width 80 mm (3-9/64”) 80 mm (3-9/64”) 80 mm (3-9/64”)
Weight 1.5 kg (3.3 lbs.) 1.4 kg (3.1 lbs.) 1.3 kg (2.9 lbs.)
*: Charging time varies depending on the type of charger used.
COMPARISON WITH SIMILAR PRODUCTS

-6-
(Superior specifications: )
HITACHI
Maker
Model
Item DS 18DSFL DS 18DCL
M
Machine screw
6 mm (1/4”) 6 mm (1/4”) 6 mm (1/4”)
Screw
driving Wood screw 6.8 mm dia. x 50 mm
(#16 x 2”)
6.8 mm dia. x 50 mm
(#16 x 2”)
6.0 mm dia. x 75 mm
(#14 x 3”)
Mild steel 13 mm (1/2”) 13 mm (1/2”) 13 mm (1/2”)
Max. capacity
Drilling Soft wood 38 mm (1-1/2”) 38 mm (1-1/2”) 36 mm (1-27/64”)
Low 0 to 450 min-1 0 to 450 min-1 0 to 400 min-1 Rotation
speed High 0 to 1,250 min-1 0 to 1,250 min-1 0 to 1,300 min-1
1.0 to 6.0 N•m
(10 to 60 kgf•cm)
(9 to 52 in-lbs.)
1.0 to 6.0 N•m
(10 to 60 kgf•cm)
(9 to 52 in-lbs.)
Not indicated
Slip torque
22 positions 22 positions 16 positions
Max. torque
41 N•m
(418 kgf•cm)
(364 in-lbs.)
41 N•m
(418 kgf•cm)
(364 in-lbs.)
42 N•m
(428 kgf•cm)
(372 in-lbs.)
Type Double sleeve Double sleeve Single sleeve Drill
chuck Capacity 13 mm (1/2”) 13 mm (1/2”) 13 mm (1/2”)
Type Variable speed Variable speed Variable speed
Switch Electric brake Equipped Equipped Equipped
Automatic spindle lock None None Equipped
Reversing switch Push-button Push-button Push-button
Handle shape T-type T-type T-type
Soft-grip handle Equipped Equipped Equipped
Belt Hook Equipped None None
Strap None None None
Nominal
capacity 1.5 Ah 1.5 Ah 1.5 Ah
(Actual 1.1Ah)
Nominal voltage
18 V (Li-ion) 18 V (Li-ion) 18 V (Li-ion)
Battery
Charging time* 40 min.
(UC 18YGSL)
60 min.
(UC 18YKL)
15 min.
(DC 18RA)
Overall length 228 mm (8-31/32”) 227 mm (8-15/16”) 214 mm (8-27/64”)
Overall height 227 mm (8-15/16”) 236 mm (9-19/64”) 227 mm (8-15/16”) Dimensions
Overall width 80 mm (3-9/64”) 80 mm (3-9/64”) 80 mm (3-9/64”)
Weight 1.7 kg (3.7 lbs.) 1.6 kg (3.5 lbs.) 1.6 kg (3.5 lbs.)
*: Charging time varies depending on the type of charger used.

-7-
Wood screw
4.8 mm dia.
(
3/16”
)
American pine
L40 (1-9/16”)
Wood boring
American pine
18 mm dia.
(23/32”)
T18 (23/32”)
HSS Drill bit
Mild steel
6.5 mm dia.
(1/4”)
T1.6 (1/16”)
Machine screw
6 mm (1/4”)
12 mm (15/32”)
2. Comparison of Drilling and Fastening Performance per Charge
Working Capacity
Type of Work Maker Model 0 *250 *500 *750 *1,000
0 50 100 150 200
Drilling
Speed
(sec./pc.)
DS 14DSFL 78 8.6
HITACHI
DS 14DCL 70 7.6
<High speed>
M97 8.7
DS 14DSFL
2.8
HITACHI
DS 14DCL 2.9
<Low speed>
M4.4
DS 14DSFL
2.7
HITACHI
DS 14DCL 3.0
<High speed>
M3.3
DS 14DSFL
0.6
HITACHI
DS 14DCL 0.7
<High speed>
M0.6
[Working Capacity]
Without *: Number of holes or fasteners per charge
With *: Number of machine screws fastened per charge
The table above shows examples of test data. The batteries used in testing performance are as follows:
Model DS 14DSFL: 1.5 Ah
Model DS 14DCL: 1.5 Ah
M: 1.5 Ah
As actually measured values listed in the table above may vary depending on sharpness of the drill bit,
workpiece hardness (particularly in wood materials), moisture content of wood, charging condition, operator
skill, and other factors, this data should only be used as a comparative guide.
199
183
184
195
185
*665
*690
233
*909