Hitachi DH 36DL Manual

• Drilling anchor holes
• Drilling holes in concrete, tile, brick, and similar materials
• Drilling holes in steel and wood
• Tightening and loosening machine screws and wood screws
PRODUCT NAME
Hitachi 25.2 V Cordless Rotary Hammer
Models DH 25DL, DH 25DAL
Hitachi 36 V Cordless Rotary Hammer
Models DH 36DL, DH 36D
A
L
[ NEW FEATURES ]
Light weight and compact
Large number of holes can be drilled per
charge
Fastest drilling speed in the class
Switchable hammering force mechanism
increases working efficiency
New Li-ion battery 25.2 V/36 V (Slide-in/out type)
The new Models DH 25DL, DH 25DAL, DH 36DL and DH 36DAL are developed under the same concept as the
well-reputed Models DH 24DV and DH 24DVA. These new models are more lightweight and their working
capacities are higher than the current models thanks to the adoption of the lightweight and high-voltage lithium-
ion batteries. Features of the Models DH 25DL, DH 25DAL, DH 36DL and DH 36DAL include the following:
(1) Lightweight and compact
(2) Large number of holes can be drilled per battery charge.
(3) Fastest drilling speed in the class
(4) Switchable hammering force mechanism
(5) New lithium-ion batteries 25.2 V/36 V (Slide-in/out type)
We aim to expand the market share of our cordless products by introducing these new Models DH 25DL,
DH 25DAL, DH 36DL and DH 36DAL.
LIST Nos.
DH 25DL: G874,
DH 25DAL: G875,
DH 36DL: G872,
DH 36DAL: G873
Jun. 2007
MARKETING OBJECTIVE
APPLICATIONS
SELLING POINTS
International Sales Division
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
D

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) of out competitor(s). The symbol(s) utilized here is(are) as follows:
Competitors
Symbols Utilized Company Name Model Name
B BOSCH GBH36V-LI

CONTENTS
Page
SELLING POINT DESCRIPTIONS -----------------------------------------------------------------------------------------1
SPECIFICATIONS --------------------------------------------------------------------------------------------------------------3
COMPARISONS WITH SIMILAR PRODUCTS--------------------------------------------------------------------------5
1. Specifications comparisons ------------------------------------------------------------------------------------5
2. Drilling speed comparisons ------------------------------------------------------------------------------------6
3. Chiseling performance comparisons-------------------------------------------------------------------------7
4. Per charge working capacity comparisons -----------------------------------------------------------------8
PRECAUTIONS IN SALES PROMOTION--------------------------------------------------------------------------------9
1. Safety instructions -----------------------------------------------------------------------------------------------9
2. Precautions requiring particular attention during sales promotion --------------------------------- 11
REFERENCE MATERIALS------------------------------------------------------------------------------------------------- 11
REPAIR GUIDE---------------------------------------------------------------------------------------------------------------- 12
1. Precautions in disassembly and reassembly (DH 25DL, DH 36DL) -------------------------------12
2. Precautions in disassembly and reassembly (DH 25DAL, DH 36DAL) --------------------------- 17
3. Precautions in servicing (DH 25DL, DH 25DAL, DH 36DL, DH 36DAL)--------------------------24
4. Precautions in disassembly and reassembly of battery charger ------------------------------------25
STANDARD REPAIR TIME (UNIT) SCHEDULES--------------------------------------------------------------------26
Assembly diagram for DH 25DL
Assembly diagram for DH 25DAL
Assembly diagram for DH 36DL
Assembly diagram for DH 36DAL

1
Change lever
Shift knob
“Rotation + hammering” “Rotation only” “Hammering only
“POWER”
mode
(Powerful
hammering
force)
<Drilling holes in concrete>
Suitable for drilling holes
of 5 mm or larger
diameter with high motor
power (speedy and
efficient drilling)
<Drilling holes in steel and wood>
Suitable for drilling holes
in steel and wood
speedily with high motor
power
<Demolishing concrete>
Suitable for demolishing
hard materials such as
concrete with high motor
power
“SAVE”
mode
(Suppressed
hammering
force)
<Drilling holes in concrete>
Suitable for drilling holes
of 4.8 mm or smaller
diameter with suppressed
motor power (preventing
the bit from being bent)
< Nonusable >
Do not use the tool for
high-load operation in
this mode because the
motor power is
suppressed. Otherwise,
the motor may be burnt
out.
< Demolishing blocks >
Suitable for demolishing
brittle materials such as
blocks and bricks with
suppressed motor power
*: Based on our own research
Lightweight and compact *
The Models DH 25DL, DH 25DAL, DH 36DL and DH 36DAL are substantially lighter than the current
models in weight thanks to the adoption of the new lithium-ion batteries Types BSL 2530 and BSL 3626.
They are lighter than B by over 300 g in weight.
Maker HITACHI
Model DH 25DL DH 25DAL DH 36DL DH 36DAL B
Overall length (mm) 322 322 322 322 367
Overall height (mm) 192 192 214 214 221
Overall width (m) 93 93 93 93 96
Weight (kg) 3.5 3.6 3.9 4.0 4.3
Large number of holes can be drilled per battery charge *
The working capacity per single charge of the Model DH 36DAL is 1.5 to 2 times higher than B thanks to the
highly efficient motor and the high-capacity battery. For details, refer to "4. Per charge working capacity
comparisons" on page 8.
Fastest drilling speed in the class *
The drilling speed of the Models DH 25DL, DH 25DAL, DH 36DL and DH 36DAL are about 1.1 times higher
than B thanks to the efficient transmission of the hammering energy. For details, refer to "2. Drilling speed
comparisons" on page 6.
Switchable hammering force mechanism increases
working efficiency
Each of the Models DH 25DL, DH 25DAL, DH 36DL and DH 36DAL is equipped with the same mechanism
as the current DH 24 series cordless rotary hammers to switch the hammering force between "POWER"
mode and "SAVE" mode for proper adjustment of the hammering force.
SELLING POINT DESCRIPTIONS

-2-
Type BSL 2530 (Capacity: 3.0 Ah) and Type BSL 3626 (Capacity: 2.6 Ah)
Each of the new lithium-ion batteries is of a safe design and long-life
thanks to the overdischarge protection circuit, overcurrent protection
circuit, and voltage monitoring circuit for each cell.
Each of the Models DH 25DL, DH 25DAL, DH 36DL and DH 36DAL is
equipped with the overdischarge protection circuit and the overcurrent
protection circuit to prevent overdischarge (overuse) of the battery.
Each of the Types BSL 2530 and BSL 3626 lithium-ion batteries is
equipped with the voltage monitoring circuit for each cell to prevent
overcharge (excessive charging) of the battery.
Precautions for use of the Types BSL 2530 and BSL 3626 lithium-ion batteries
Each of the Models DH 25DL, DH 25DAL, DH 36DL and DH 36DAL is equipped with a protective
function that automatically stops output to extend the battery life. The motor may automatically stop
when the remaining battery level is low (when the battery voltage is decreased to about 14 V (Type
BSL 2530) or when decreased to about 20 V (Type BSL 3626)) even if the switch is depressed
continuously during operation. This is because the protective function is activated. The batteries are
not faulty. Charge the batteries immediately in such case.
New lithium-ion batteries 25.2 V/36 V (Slide-in/out type)

-3-
Model DH 25DL, DH 25DAL
Concrete 26 mm (1”)
Steel 13 mm (1/2”)
Capacity
Wood 30 mm (1-1/4”)
Usable drill bits SDS-plus type only
No-load rotation speed “POWER” mode: 1,100 min –1 , “SAVE” mode: 550 min -1
Full-load blow “POWER” mode: 4,500 min –1 , “SAVE” mode: 2,250 min -1
Type of motor DC magnet motor
Type of switch Trigger switch with forward/reverse rotation selector (with brake)
Type of handle D-type handle of main body and side handle
Enclosure
Housing, gear cover -- Glassfiber reinforced polyamide resin
Grip cover --------------- Glassfiber reinforced polycarbonate and elastomer
Inner cover -------------- Aluminum alloy die casting
Battery ------------------- Glassfiber reinforced polycarbonate resin (black)
Charger ------------------ ABS resin
Battery
(Type: BSL 2530)
Sealed cylindrical lithium-ion storage battery
Nominal voltage ----------------------- DC 25.2 V
Nominal life ----------------------------- Charging/discharging: Approx. 1,000 times
Nominal capacity ---------------------- 3.0 Ah
Charger
(Model UC 36YRL)
Overcharge protection system:
(1) Stop current detection
(2) Battery surface temperature detection (thermistor)
(3) 180-minute timer
Power input: 100 W
Charging time: Approx. 60 minutes [for Type BSL 2530 battery at 20°C (68°F)]
Operable ambient temperature range: 0°C
- 40°C (32°F - 104°F)
The maximum allowable temperature of the Type BSL 2530 battery is 50°C
(122°F).
Weight
Net
Main body unit (including battery) DH 25DL ------------------------- 3.5 kg (7.7 lbs.)
DH 25DAL ----------------------- 3.6 kg (7.9 lbs.)
Charger unit (UC 36YRL, including cord) ---------------------------- 0.9 kg (2.0 lbs.)
Gross DH 25DL (2LRK) ----------------------------------------------------------- 8.2 kg (18.0 lbs)
DH 25DAL (2LRK) --------------------------------------------------------- 8.3 kg (18.3 lbs)
Standard
accessories (2LRK)
Charger (UC 36YRL) ------------------------------------------------------------------------1
Battery (BSL 2530) --------------------------------------------------------------------------2
Side handle ------------------------------------------------------------------------------------1
Depth gauge-----------------------------------------------------------------------------------1
Plastic case ------------------------------------------------------------------------------------1
SPECIFICATIONS
36

-4-
Model DH 36DL, DH 36DAL
Concrete 26 mm (1”)
Steel 13 mm (1/2”)
Capacity
Wood 30 mm (1-1/4”)
Usable drill bits SDS-plus type only
No-load rotation speed “POWER” mode: 1,100 min –1 , “SAVE” mode: 550 min –1
Full-load blow “POWER” mode: 4,500 min –1 , “SAVE” mode: 2,250 min -1
Type of motor DC magnet motor
Type of switch Trigger switch with forward/reverse rotation selector (with brake)
Type of handle Gun-type handle of main body and side handle
Enclosure
Housing, gear cover -- Glassfiber reinforced polyamide resin
Grip cover --------------- Glassfiber reinforced polycarbonate and elastomer
Inner cover -------------- Aluminum alloy die casting
Battery ------------------- Glassfiber reinforced polycarbonate resin (black)
Charger ------------------ ABS resin
Battery
(Type: BSL 3626)
Sealed cylindrical lithium-ion storage battery
Nominal voltage ------------------------DC 36V
Nominal life ------------------------------Charging/discharging: Approx. 1,000 times
Nominal capacity -----------------------2.6 Ah
Charger
(Model UC 36YRL)
Overcharge protection system:
(1) Stop current detection
(2) Battery surface temperature detection (thermistor)
(3) 180-minute timer
Power input: 100 W
Charging time: Approx. 80 minutes [for Type BSL 3626 battery at 20°C (68°F)]
Operable ambient temperature range: 0°C
- 40°C (32°F - 104°F)
The maximum allowable temperature of the Type BSL 3626 battery is 50°C
(122°F).
Weight Net
Main body unit (including battery) DH 36DL ------------------------- 3.9 kg (8.6 lbs.)
DH 36DAL ----------------------- 4.0 kg (8.8 lbs.)
Charger unit (UC 36YRL, including cord) ---------------------------- 0.9 kg (2.0 lbs.)
Gross DH 36DL (2LRK) ----------------------------------------------------------- 8.8 kg (19.4 lbs)
DH 36DAL (2LRK) --------------------------------------------------------- 8.9 kg (19.6 lbs)
Standard
accessories
(2LRK)
Charger (UC 36YRL) ------------------------------------------------------------------------1
Battery (BSL 3626) --------------------------------------------------------------------------2
Side handle ------------------------------------------------------------------------------------1
Depth gauge-----------------------------------------------------------------------------------1
Plastic case ------------------------------------------------------------------------------------1
36

-5-
(Superior specifications: )
1. Specifications comparisons
Maker HITACHI
Model name DH 25DL DH 25DAL DH 36DL DH 36DAL
B
Concrete 26 mm (1”) 26 mm (1”)
Steel 13 mm (1/2”) 13 mm (1/2”)Capacity
Wood 30 mm (1-1/4") 30 mm (1-1/4")
No-load rotation speed (P) mode: 1,100 min –1, (S) mode: 550 min –1 960 min –1
Full-load blow (P) mode: 4,500 min –1, (S) mode: 2,250 min –1 4,260 min –1
Changeover of impact energy Equipped Not indicated
Bit setting Single action Single action
Reversing switch Push-button Push-button
Changeover modes 2 modes 3 modes 2 modes 3 modes 3 modes
Soft grip handle Equipped (Handle) Equipped (Handle)
Variable speed Equipped Equipped
Internal pressure adjustment
mechanism Equipped Not indicated
Nominal capacity 3.0 Ah 2.6 Ah 2.0 Ah
Nominal voltage 25.2 V 36 V 36 V
Protection circuit Equipped Not indicated
Battery
(Li-ion)
Charging time*160 min 80 min 60 min
Overall length 322 mm 367 mm
Overall height 192 mm 214 mm 221 mm
Dimensions
Overall width 93 mm 96 mm
Weight 3.5 kg 3.6 kg 3.9 kg 4.0 kg 4.3 kg
*1: Charging time may vary depending on the type of charger to be used.
COMPARISONS WITH SIMILAR PRODUCTS

-6-
2. Drilling speed comparisons
Drilling speed depends on the operating conditions. The test result is based on actual factory tests, and is
used as a reference only. The drilling speed comparisons for downward drilling. The drill bits used are the
Hitachi genuine SDS-plus shank bits.
Pressing force: 10kgf
Test material: Concrete panel with a
compression strength of 240 kgf/cm2

-7-
3. Chiseling performance comparisons
Chiseling performance varies considerably depending on the work conditions. Use the factory test results
shown below for comparison purposes only.