Hitachi CJ 14DL Manual

• Cutting or cutting out shapes in various types of wood workpieces
• Cutting various types of metals such as mild steel, aluminum and copper
• Cutting various types of synthetic resin materials such as bakelite and vinyl chloride
• Cutting various decorative sheets and thin and soft construction materials
• Cutting stainless steel sheets
PRODUCT NAME
Hitachi 14.4 V Cordless Jig Saw
Model CJ 14DL, CJ 14DMR
Hitachi 18 V Cordless Jig Saw
Model CJ 18DL, CJ 18DMR
[ NEW FEATURES ]
Highest cutting capacity in the class
Lightest in the class
Equipped with the new lithium-ion battery
Tool-less blade changing system
LED lighting system
Powerful dust blowing
4-stage orbital action
Soft grip handle
The new Models CJ 14DL and CJ 18DL are cordless jig saws equipped with the 14.4-V/18-V lithium-ion
batteries. The new Models CJ 14DMR and CJ 18DMR are cordless jig saws equipped with the 14.4-V/18-V
nicad batteries. The key features of the Models CJ 14DL, CJ 18DL, CJ 14DMR and CJ 18DMR are as follows:
(1) Highest cutting capacity in the class thanks to the high-performance motor
(2) Compact and lightweight
We aim to expand our market share with the new Models CJ 14DL, CJ 14DMR, CJ 18DL and CJ 18DMR.
LIST Nos.
CJ 14DL: G880,
CJ 14DMR: G881,
CJ 18DL: G882,
CJ 18DMR: G883
Jul. 2007
MARKETING OBJECTIVE
APPLICATIONS
SELLING POINTS
International Sales Division
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
C

REMARK:
Throughout this TECHNICAL DATAAND SERVICE MANUAL, a symbol(s) is(are) used in the
place of company name(s) of our competitor(s). The symbol(s) utilized here is(are) as follows:
Competitors
Symbols Utilized Company Name Model Name
B-1 GST14.4V
B-2 BOSCH GST18V
C-1 BJV140
C-2 MAKITA BJV180

CONTENTS Page
SELLING POINT DESCRIPTIONS-----------------------------------------------------------------------------------------1
SPECIFICATIONS --------------------------------------------------------------------------------------------------------------3
1. Specifications -----------------------------------------------------------------------------------------------------3
2. Optional accessories --------------------------------------------------------------------------------------------7
COMPARISONS WITH SIMILAR PRODUCTS--------------------------------------------------------------------------9
1. Specification comparisons--------------------------------------------------------------------------------------9
2. Cutting number comparisons per charge-----------------------------------------------------------------10
ORBITAL MECHANISM AND BLADE-----------------------------------------------------------------------------------11
1. Blade movement -----------------------------------------------------------------------------------------------11
2. Orbital position selection -------------------------------------------------------------------------------------11
3. Blades-------------------------------------------------------------------------------------------------------------12
PRECAUTIONS IN SALES PROMOTION------------------------------------------------------------------------------13
1. Safety instructions ---------------------------------------------------------------------------------------------13
2. Precautions requiring particular attention during sales promotion ---------------------------------15
REPAIR GUIDE----------------------------------------------------------------------------------------------------------------16
1. Precautions in disassembly and reassembly------------------------------------------------------------16
2. Precautions in disassembly and reassembly of battery charger------------------------------------24
STANDARD REPAIR TIME (UNIT) SCHEDULES--------------------------------------------------------------------25
Assembly diagram for CJ 14DL
Assembly diagram for CJ 14DMR
Assembly diagram for CJ 18DL
Assembly diagram for CJ 18DMR

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*: Based on our own research
Highest cutting capacity in the class*
The number of wood cutting operations per battery charge by the Models CJ 14DL and CJ 18DL is 1.3
times greater than C-1 and C-2 thanks to the efficient transmission of the cutting energy. For details, refer
to “Cutting number comparisions per charge” on page 10.
Lightest in the class *
The Models CJ 14DL, CJ 18DL, CJ 14DMR and CJ 18DMR are lightest in weight in the class.
Equipped with the new lithium-ion battery
Each of the Types BCL 1430 and EBM 1830 lithium-ion batteries is equipped with the overdischarge
protection circuit, overload protection circuit, and voltage monitoring circuit for each cell to prevent
reduction of the battery life due to overdischarge (overuse) or overcharge (excessive charging) of the
battery. The number of charging/discharging is about 1,500.
Precautions for use of the Types BCL 1430 and EBM 1830 lithium-ion batteries
Each of the Types BCL 1430 and EBM 1830 lithium-ion batteries is equipped with a protective function that
automatically stops output to extend the battery life. The motor may stop automatically in either of the
following case 1or 2even if the switch is depressed continuously during operation. This is because the
protective function is activated. The battery is not faulty.
1 The motor may stop automatically when the remaining battery level is low (when the battery voltage is
decreased to about 8 V (Type BCL 1430)/when decreased to about 12 V (Type EBM 1830)). Charge the
battery immediately in such case.
2 The motor may stop if the Model CJ 14DL/CJ 18DL is overloaded. In such case, release the switch and
eliminate the cause of the overload problem. Then the Model CJ 14DL/CJ 18DLis operable.
Tool-less blade changing system
The blade can be easily changed by opening/closing the lever. Usable blade is only the BOSCH's blade
whose thickness at the attaching portion is 1.5 mm or less or an equivalent blade having the same shape.
1) Open the lever fully. (Fig. )
2) Detach the blade from the blade holder.
3) Attach the new blade in the blade holder by pushing as far
as it will go. (Fig. )
4) Close the lever. (Fig. )
SELLING POINT DESCRIPTIONS
Maker HITACHI
Model CJ 14DL/CJ 14DMR/CJ 18DL/CJ 18DMR B-1 B-2 C-1 C-2
Weight 2.3 kg / 2.5 kg / 2.4 kg / 2.7 kg 2.9 kg 3.2 kg 2.7 kg 2.8 kg
Lever
Blade holder
Blade

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LED lighting system
Each of the Models CJ 14DL, CJ 14DMR, CJ 18DL and CJ 18DMR is equipped with an LED light for
illuminating the blade. To turn on the light, pull the trigger. Release the trigger to turn off.
Powerful dust blowing
Each of the Models CJ 14DL, CJ 14DMR, CJ 18DL and CJ 18DMR is equipped with a dust blower
mechanism that blows off dust by the air from the motor cooling fan.
4-stage orbital action
Each of the Models CJ 14DL, CJ 14DMR, CJ 18DLand CJ 18DMR is equipped with the orbital mechanism
that allows the blade to move up and down and forward and backward. This mechanism makes the blade
dig well into wood and other soft materials and also discharges cutting chips well to achieve speedy cutting.
For details, refer to “Blade movement” on page 11.
Soft grip handle
The handle of the Models CJ 14DL, CJ 14DMR, CJ 18DL and CJ 18DMR 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.

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1. Specifications
Model CJ 14DL
Capacity Max. cutting thickness Wood 135 mm (5-5/16”)
Mild steel 10 mm (3/8”)
No-load speed 0 to 2,400 min-1
Length of stroke 26 mm (1”)
Min. cutting radius 25 mm (1”)
Type of motor DC magnet motor
Type of switch Trigger switch with rotation selector and brake (with ON-OFF lock)
Max. cutting angle 45°(right and left)
LED light White LED
Enclosure
Housing---------Glassfiber reinforced polycarbonate resin and elastomer
Gear holder----Aluminum alloy die casting
Battery ----------Glassfiber reinforced polycarbonate resin (black)
Charger---------ABS resin
Battery
(Type: BCL 1430)
Sealed cylindrical lithium-ion storage battery
Nominal voltage ------ DC 14.4 V
Nominal life ------------ Charging/discharging:Approx. 1,500 times
Nominal capacity ---- 3.0 Ah
Charger
(Model UC 18YRL)
Overcharge protection system:
(1) Battery voltage detection (- V system)
Battery temperature detection (dT/dt system) for Ni-MH and SUPER Ni-MH
batteries
(2) Battery surface temperature detection (thermistor)
(3) 120-minute timer
(4) Stop current detection (Li-ion batteries)
Power input: 95 W
Charging time: Approx. 45 minutes [for Type BCL 1430 battery at 20°C (68°F)]
Operable ambient temperature range: 0°C to 40°C (32°F to 104°F)
The maximum allowable temperature of the Type BCL 1430 battery
is 50°C (122°F). Indication method of battery charging function
NOTE: The Model UC 18YRLcools the overheated battery by the cooling fan during the standby mode.
Net Main body unit (including battery) ------------------------------------2.3 kg (5.1 lbs.)
Charger unit (UC 18YRL, including cord) ---------------------------0.6 kg (1.3 lbs.)
Weight Gross CJ 14DL (2MRK) --------------------------------------------------------- 5.7 kg (12.5 lbs.)
CJ 14DL (NN) -------------------------------------------------------------2.1 kg (4.6 lbs.)
(2LRK)
Charger (UC 18YRL) -----------------------------------------------------------------------1
Battery (BCL 1430) --------------------------------------------------------------------------2
Blade (No. 41) --------------------------------------------------------------------------------1
Splinter guard ---------------------------------------------------------------------------------1
Chip cover--------------------------------------------------------------------------------------1
Plastic case------------------------------------------------------------------------------------1
Standard
accessories
(NN) Without charger, plastic case and battery
SPECIFICATIONS

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Model CJ 18DL
Capacity Max. cutting thickness Wood 135 mm (5-5/16”)
Mild steel 10 mm (3/8”)
No-load speed 0 to 2,400 min-1
Length of stroke 26 mm (1”)
Min. cutting radius 25 mm (1”)
Type of motor DC magnet motor
Type of switch Trigger switch with rotation selector and brake (with ON-OFF lock)
Max. cutting angle 45°(right and left)
LED light White LED
Enclosure
Housing---------Glassfiber reinforced polycarbonate resin and elastomer
Gear holder----Aluminum alloy die casting
Battery ----------Glassfiber reinforced polycarbonate resin (black)
Charger---------ABS resin
Battery
(Type: EBM 1830)
Sealed cylindrical lithium-ion storage battery
Nominal voltage ------ DC 18 V
Nominal life ------------ Charging/discharging:Approx. 1,500 times
Nominal capacity ---- 3.0 Ah
Charger
(Model UC 18YRL)
Overcharge protection system:
(1) Battery voltage detection (- V system)
Battery temperature detection (dT/dt system) for Ni-MH and SUPER Ni-MH
batteries
(2) Battery surface temperature detection (thermistor)
(3) 120-minute timer
(4) Stop current detection (Li-ion batteries)
Power input: 95 W
Charging time: Approx. 45 minutes [for Type EBM 1830 battery at 20°C (68°F)]
Operable ambient temperature range: 0°C to 40°C (32°F to 104°F)
The maximum allowable temperature of the Type EBM 1830 battery
is 50°C (122°F). Indication method of battery charging function
NOTE: The Model UC 18YRLcools the overheated battery by the cooling fan during the standby mode.
Net Main body unit (including battery) ------------------------------------2.4 kg (5.8 lbs.)
Charger unit (UC 18YRL, including cord) ---------------------------0.6 kg (1.3 lbs.)
Weight Gross CJ 18DL (2MRK) --------------------------------------------------------- 5.9 kg (13.0 lbs.)
CJ 18DL (NN) -------------------------------------------------------------2.1 kg (4.6 lbs.)
(2MRK)
Charger (UC 18YRL) -----------------------------------------------------------------------1
Battery (EBM 1830) -------------------------------------------------------------------------2
Blade (No. 41) --------------------------------------------------------------------------------1
Splinter guard ---------------------------------------------------------------------------------1
Chip cover--------------------------------------------------------------------------------------1
Plastic case------------------------------------------------------------------------------------1
Standard
accessories
(NN) Without charger, plastic case and battery

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Model CJ 14DMR
Capacity Max. cutting thickness Wood 135 mm (5-5/16”)
Mild steel 10 mm (3/8”)
No-load speed 0 to 2,400 min-1
Length of stroke 26 mm (1”)
Min. cutting radius 25 mm (1”)
Type of motor DC magnet motor
Type of switch Trigger switch with rotation selector and brake (with ON-OFF lock)
Max. cutting angle 45°(right and left)
LED light White LED
Enclosure
Housing---------Glassfiber reinforced polycarbonate resin and elastomer
Gear holder----Aluminum alloy die casting
Battery ----------Glassfiber reinforced polycarbonate resin (black)
Charger---------ABS resin
Battery
(Type: EB 14B)
Sealed cylindrical lithium-ion storage battery
Nominal voltage ------ DC 14.4 V
Nominal life ------------ Charging/discharging:Approx. 1,000 times
Nominal capacity ---- 2.0 Ah
Charger
(Model UC 18YG)
Overcharge protection system:
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.
Power input: 70 W
Indication method: Pilot lamp indicator of battery charging
Function: On------------------------------------------------------------During charging
Off -----------------------------------------------------------Charging completed
Net Main body unit (including battery) ------------------------------------2.5 kg (5.5 lbs.)
Charger unit (UC 18YG, including cord) ----------------------------0.6 kg (1.3 lbs.)
Weight Gross CJ 14DMR (2BGK) ------------------------------------------------------- 6.3 kg (13.9 lbs.)
CJ 14DMR (NN) ----------------------------------------------------------2.1 kg (4.6 lbs.)
(2BGK)
Charger (UC 18YG) -------------------------------------------------------------------------1
Battery (EB 14B) -----------------------------------------------------------------------------2
Blade (No. 41) --------------------------------------------------------------------------------1
Splinter guard ---------------------------------------------------------------------------------1
Chip cover--------------------------------------------------------------------------------------1
Plastic case------------------------------------------------------------------------------------1
Standard
accessories
(NN) Without charger, plastic case and battery

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Model CJ 18DMR
Capacity Max. cutting thickness Wood 135 mm (5-5/16”)
Mild steel 10 mm (3/8”)
No-load speed 0 to 2,400 min-1
Length of stroke 26 mm (1”)
Min. cutting radius 25 mm (1”)
Type of motor DC magnet motor
Type of switch Trigger switch with rotation selector and brake (with ON-OFF lock)
Max. cutting angle 45°(right and left)
LED light White LED
Enclosure
Housing---------Glassfiber reinforced polycarbonate resin and elastomer
Gear holder----Aluminum alloy die casting
Battery ----------Glassfiber reinforced polycarbonate resin (black)
Charger---------ABS resin
Battery
(Type: EB 1820L)
Sealed cylindrical lithium-ion storage battery
Nominal voltage ------ DC 18 V
Nomina llife ------------ Charging/discharging:Approx. 1,000 times
Nominal capacity ---- 2.0 Ah
Charger
(Model UC 18YG)
Overcharge protection system:
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.
Power input: 70 W
Indication method: Pilot lamp indicator of battery charging
Function: On------------------------------------------------------------During charging
Off -----------------------------------------------------------Charging completed
Net Main body unit (including battery) ------------------------------------2.7 kg (5.9 lbs.)
Charger unit (UC 18YG, including cord) ----------------------------0.6 kg (1.3 lbs.)
Weight Gross CJ 18DMR (2BGK) ------------------------------------------------------- 6.6 kg (14.5 lbs.)
CJ 18DMR (NN) ----------------------------------------------------------2.1 kg (4.6 lbs.)
(2BGK)
Charger (UC 18YG) -------------------------------------------------------------------------1
Battery (EB 1820L) --------------------------------------------------------------------------2
Blade (No. 41) --------------------------------------------------------------------------------1
Splinter guard ---------------------------------------------------------------------------------1
Chip cover--------------------------------------------------------------------------------------1
Plastic case------------------------------------------------------------------------------------1
Standard
accessories
(NN) Without charger, plastic case and battery

-7-
2. Optional accessories
(1) Blades
NOTE: The standard blade No. 41 and the optional blade No. 21 are the same in shape.
(2) Guide Code No.
321593
(3) Sub base (A) (steel) Code No.
321992
(4) Sub base (B) (resin) Code No.
321993
Blade shape Application Blade No. Pitch Code No. Per pkg.