Hitachi Power Tools

Hitachi Power Tools
MODEL
C 18DMR
Hitachi
Power Tools
C
CORDLESS CIRCULAR SAW
C 18DMR
LIST No. G828
TECHNICAL DATA
AND
SERVICE MANUAL
June 2005
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
MAKITA
5620DWA
D
DEWALT
DC390K
M
MILWAUKEE
6310-22
B
BOSCH
1662K
CONTENTS
Page
1. PRODUCT NAME ........................................................................................................................... 1
2. MARKETING OBJECTIVE ............................................................................................................. 1
3. APPLICATIONS .............................................................................................................................. 1
4. SELLING POINTS .......................................................................................................................... 1
4-1. Selling Point Descriptions ............................................................................................................... 2
5. SPECIFICATIONS .......................................................................................................................... 3
6. COMPARISONS WITH SIMILAR PRODUCTS .............................................................................. 5
7. WORKING PERFORMANCE PER SINGLE CHARGE .................................................................. 6
8. PRECAUTIONS IN SALES PROMOTION ..................................................................................... 7
8-1. Handling Instructions ...................................................................................................................... 7
8-2. Caution Plates ................................................................................................................................ 9
8-3. Inherent Drawbacks of Cordless Circular Saws Requiring Particular Attention
During Sales Promotion ................................................................................................................ 10
9. REPAIR GUIDE ............................................................................................................................. 11
9-1. Precautions in Disassembly and Reassembly ............................................................................... 11
9-2. Precautions in Disassembly and Reassembly of Battery Charger ............................................... 18
10. STANDARD REPAIR TIME (UNIT) SCHEDULES ..................................................................... 19
Assembly Diagram for C 18DMR
1. PRODUCT NAME
Hitachi Cordless Circular Saw, Model C 18DMR
2. MARKETING OBJECTIVE
Circular saws are highly sought in the United States and some other countries where a majority of houses are of
2 x 4 construction. While we have so far met this demand with our AC-powered saws, the need for cordless tools
is growing for working on sites with no or few power supply facilities. We have thus developed this model which is
equipped with a 165 mm (6-1/2") saw blade capable of cutting a 2 x 4 piece of wood with a single pass of the
blade even at an angle of 45û. This feature is expected to make this product series stand out from the existing
competitive models.
3. APPLICATIONS
Cutting various wood materials
4. SELLING POINTS
Soft and comfortable grip
Safety switch lever
Electric brake for rapid
stopping of saw blade
Conveniently located light
to illuminate work
90û fine adjustment
screw underneath
the base
Magnesium saw cover
24T TCT saw blade cuts
57 mm (2-1/4") max. at 90 deg.
40 mm (1-9/16") max. at 45 deg.
(Suitable for cutting 2 x 4 materials)
--- 1 ---
4-1. Selling Point Descriptions
(1) 24T TCT saw blade cuts 57 mm (2-1/4") max. at 90 deg.
The Model C 18DMR is equipped with a 165 mm (6-1/2") tungsten-carbide tipped saw blade as a standard
attachment. Its maximum cutting depth is 57 mm (2-1/4"), while maker C's, B's and M's maximum cutting
depth is 54 mm (2-1/8").
(2) 24T TCT saw blade cuts 40 mm (1-9/16") max. at 45 deg.
(Suitable for cutting 2 x 4 materials)
The Model C 18DMR's maximum cutting depth is 40 mm (1-9/16") at 45 degrees inclined cutting. Therefore, a
2 x 4 workpiece can be easily cut at 45 degrees inclined cutting.
(3) Conveniently located light to illuminate work
The Model C 18DMR is equipped with a spotlight for lighting blade edges. The working efficiency is improved
because the spotlight helps to align the saw blade with a premarked cutting line even in a dimly lit workplace.
Because the light switch and the safety switch lever are integrated into one switch, the switch operation is
easy and the spotlight can be lit before starting the saw blade. The spotlight is automatically turned off when
turning off the power switch. A standard automotive light bulb is used for the spotlight.
The safety switch lever and the light
switch are integrated into one switch.
Switch trigger
Safety switch lever
(also used for a light
switch)
1 The blade edges are lit by the spotlight when
pressing the safety switch lever. (The spotlight is
turned on before the saw blade begins to rotate.)
2 The spotlight keeps lighting as long as the switch
trigger is depressed.
3 The safety switch lever automatically returns to offposition and the spotlight is turned off when the
trigger switch is released.
Square
(4) 90û fine adjustment screw underneath the base
The Model C 18DMR is equipped with a 90û fine adjustment
screw that makes the angle between the base and the saw
blade square for accurate 90û cutting.
90û fine
adjustment
screw
Base
--- 2 ---
5. SPECIFICATIONS
Model
C 18DMR
Saw blade diameter
165 mm (6-1/2")
0 --- 57 mm (0 --- 2-1/4")
Cutting depth
at 90û
0 --- 40 mm (0 --- 1-9/16")
DC magnet motor
D type
Trigger switch (automatic return type with switch-lock)
at 45û
Type of motor
Type of handle
Type of switch
Enclosure
Rotation speed
Housing, handle cover
Glassfiber reinforced polycarbonate resin
Saw cover
Magnesium
Lower guard
Polycarbonate
Charger
ABS resin
Battery
No-load
Glassfiber reinforced polyamide resin
3,400/min.
Current (A)
4.5 A
Battery
(Type EB 1820L)
Sealed cylindrical nickel-cadmium storage battery
Nominal voltage
DC 18 V
Nominal life
Charging/discharging: Approx. 1,000 times
Nominal capacity
2.0 Ah
Sealed cylindrical nickel-metal-hydride storage battery
Battery
Nominal voltage
DC 18 V
(Type EB 1826HL/
Charging/discharging: Approx. 500 times
EB 1830HL) Nominal life
Nominal capacity
2.6/3.0 Ah
Overcharge protection system:
Charger
2
(Model UC 24YFA) (1) Battery voltage detection ( V system) for Ni-Cd battery
Ni-MH battery temperature detection (dT/dt system) for Ni-MH battery
(2) Battery surface temperature detection (thermostat or thermistor)
(3) 120 minutes timer
Power input: 90 W
Charging time: Approx. 50 minutes [for type EB 1820L battery at 20ûC (68ûF)]
Approx. 60 minutes [for type EB 1826HL battery at 20ûC (68ûF)]
Approx. 70 minutes [for type EB 1830HL battery at 20ûC (68ûF)]
Operable ambient temperature range: 0 ûC --- 40ûC (32ûF --- 104ûF)
The maximum allowable temperature of the type EB 1820L battery is 60ûC (140ûF) and
the type EB 1826HL or EB 1830HL battery is 45ûC (113ûF).
•••••••••• • • • • •
• • • • • • • • • • • • • • • • • • • • •
••••••• • • • • • •
•••••••••• • • • • •
• • • • • • • • • • • • • • • • • • • • •
••••••• • • • • • •
Indication method of battery charging function:
Indications of the pilot lamp
Lights for 0.5 seconds. Does not light for
0.5 seconds. (off for 0.5 seconds)
Before
charging
Blinks
(RED)
While
charging
Lights
(RED)
Lights continuously.
Charging
complete
Blinks
(RED)
Lights for 0.5 seconds. Does not light for
0.5 seconds. (off for 0.5 seconds)
Charging
impossible
Flickers
(RED)
Lights for 0.1 seconds. Does not light for
0.1 seconds. (off for 0.1 seconds)
Charging
impossible
Lights continuously.
Lights
(GREEN)
--- 3 ---
Malfunction in the battery or
the charger
The battery temperature is high,
making recharging impossible.
Weight
Net
Main body (including battery) ............... 3.6 kg (8.0 lbs.)
Charger unit (including cord) ................ 0.6 kg (1.3 lbs.)
Gross
Main body, charger, case and other
standard accessories .......................... 8.4 kg (18.7 lbs.)
Charger (UC 24YFA) .................................................. 1
Saw blade ................................................................... 1
Box wrench ................................................................. 1
Guide .......................................................................... 1
Plastic tool case .......................................................... 1
Standard accessories
1) Saw blade
For the U.S.A. and Canada
External diameter
Hole diameter
No. of teeth
Code No.
165 mm (6-1/2")
15.9 mm (5/8")
24 pieces
324293
165 mm (6-1/2")
15.9 mm (5/8")
40 pieces
317451
For Australia, New Zealand and China
External diameter
Hole diameter
No. of teeth
Code No.
165 mm (6-1/2")
20 mm (25/32")
40 pieces
317452
165 mm (6-1/2")
20 mm (25/32")
24 pieces
324294
External diameter
Hole diameter
No. of teeth
Code No.
165 mm (6-1/2")
30 mm (1-3/16")
24 pieces
324295
For EURO
2) Battery
EB 1830HL (3.0 Ah)
Country
Code No.
U.S.A. and Canada
322877
Australia
322876
EB 1826HL (2.6 Ah)
Country
Code No.
W. EURO and N. EURO
322878
EB 1820L (2.0 Ah)
Country
Australia, New Zealand
and W. EURO
Code No.
322880
China
323016
U.S.A. and Canada
322881
--- 4 ---
--- 5 ---
Equipped
Equipped
Equipped
None
Length
355 (14”)
3.3
75
351
3.6
82
mm
kg
dB (A)
Unable
Equipped
79
3.6
364
Able
None
*: Charging time may vary depending on charger to be used and ambient temperatures.
No-load-noise level
Tool weight
Dimension
Unable
Equipped
Blade edge illumination
Carbon brushes replacement
Steel plate
Base material
None
Equipped
60
18
2.6
None
Equipped
60
18
2.4
3,200
24
165 (6-1/2”)
41 (1-5/8”)
54 (2-1/8”)
M
4.2
79
81
357
Able
None
78
4.3
395
Unable
None
Aluminum die casting Aluminum plate
Equipped
Equipped
60
18
2.0
4.2/8.7 lbs.
406
Able
None
Magnesium
None
Equipped
60
18
2.4
3,600
3,700
2,600
18
16
24
165 (6-1/2”)
41 (1-5/8”)
54 (2-1/8”)
B
165 (6-1/2”)
42/1-5/8”
55/2-1/4”
D
(EURO)/(U.S.A.)
165 (6-1/2”)
38 (1-1/2”)
54 (2-1/8”)
C
Aluminum die casting Aluminum die casting
50
50 (2.0 Ah)
minutes
Charging time*
18
18
2.0
3.0/2.6/2.0
3,400
V
Ah
3,400
Nominal voltage
Nominal capacity
min
40
24
-1
pieces
No. of chips
165 (6-1/2”)
165 (6-1/2”)
mm
Diameter
40 (1-9/16”)
40 (1-9/16”)
mm
45û
57 (2-1/4”)
57 (2-1/4”)
C 6DC2
mm
C 18DMR
HITACHI
90û
Adjustable guide piece
Brake
Battery
No-load speed
Saw blade
Max. cut depth
Model
Maker
6. COMPARISONS WITH SIMILAR PRODUCTS
7. WORKING PERFORMANCE PER SINGLE CHARGE
(In terms of 2.0 Ah battery)
Material
Working capacity
Maker
Model
30
60
90
120
C 18DMR
HITACHI
C
SPF
2x8
(cuts)
150
Cutting speed
(sec/cut)
148
3.7
143
3.9
D
87
6.7
B
81
5.6
M
107
8.9
As actually measured values listed in the above table may vary depending on sharpness of the saw blade,
workpiece hardness (particularly in wood materials), moisture content of wood, charging condition, operator skill,
etc., please use this as a reference only.
--- 6 ---
8. PRECAUTIONS IN SALES PROMOTION
In the interest of promoting the safest and most efficient use of the Model C 18DMR Cordless Circular Saw 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 importance 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.
8-1. Handling Instructions
Salesperson must thoroughly be 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 in the use of
the cordless (battery charger type) electric power tool which are different from those of ordinary electric power
tools.
(1) Before use, ensure that the storage battery is fully charged.
New storage battery is not fully charged. Even if the storage battery was fully charged at the factory, long
periods out of use, such as during shipping, cause the storage battery to lose its charge.
Customers must be instructed to fully charge the storage battery prior to use.
(2) When charging storage batteries, use only the exclusive Model UC 24YFA charger provided with the tool.
Because of the batteries' rapid-charging feature (about one hour), 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 over and above that indicated on the unit, it will not function properly.
(5) Conduct battery charging at an ambient temperature range of 0 --- 40 ûC (32 --- 104ûF).
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 0ûC (32ûF), the thermostat will not function properly, and the storage battery may be
over-charged. At temperature over 40ûC (104ûF), the storage battery cannot be sufficiently charged. The
optimum temperature range is 20 --- 25ûC (68û --- 77ûF).
(6) The battery charger should not be used continuously.
At high ambient temperatures, if more than 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 charge the next battery after
about fifteen minutes intervals.
(7) Do not use more than two batteries in succession.
If three or more batteries are used in rapid succession, the main body may be overheated, causing possible
motor or switch malfunction. After two batteries have been used, stop operation for about 15 minutes to cool
the main body.
--- 7 ---
(8) 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 inflammable objects, to be dropped or
inserted into the air vents. This could cause electrical shock, fire or other serious hazards.
(9) Do not attempt to disassemble the storage battery or the charger.
Special devices, such as a thermostat, are built into the storage battery and charger to permit rapid charging.
Incorrect parts replacement and/or wiring will cause malfunctions which could result in fire or other hazard.
Instruct the customer to bring these units to an authorized service center in the event repair or replacement is
necessary.
(10) Disposal of the storage battery.
Ensure that all customers understand that storage batteries should be turned to a Hitachi Power Tool sales
outlet or authorized service center when they are no longer capable of being recharged or repaired. If thrown
into a fire, the batteries may explode, or if discarded indiscriminately, leakage of the cadmium compound
contained in the battery may cause environmental pollution.
--- 8 ---
8-2. Caution Plates
(1) The following basic safety precautions are listed on the Name Plate attached to the main body of each tool.
For the U.S.A. and Canada
(2) The following cautions are listed on the Name Plate attached to the storage battery.
For the U.S.A. and Canada (EB 1830HL)
For EURO and other countries (EB 1830HL, EB 1826HL, EB 1820L)
(3) The following cautions are listed on the Name Plate attached to each Model UC 24YFA Charger.
For the U.S.A. and Canada
--- 9 ---
8-3. Inherent Drawbacks of Cordless Circular Saws Requiring Particular Attention During Sales Promotion
The cordless circular saw offers many advantages; it can be used in places without power source, the absence of
a cord allows easy use, etc. However, any cordless electric power tool has certain inherent drawbacks.
Salespersons must be thoroughly familiar with these drawbacks in order to properly advise the customer in the
most efficient use of the tool.
(1) Do not overload the motor.
As the Model C 18DMR is a battery-powered cordless circular saw, the motor's output and torque are less
than those of ordinary AC-powered circular saws. Do not twist or thrust the main body during cutting.
Otherwise, the motor becomes locked and will cause burning of the motor or deterioration of the battery.
Do not lock the motor during operation.
(2) Avoid continuous heavy-duty operation.
Cutting a thick workpiece with strong pressure puts a heavy load on the motor. If such an operation is
performed continuously, the temperature of the motor and the housing will rise and the motor will burn. Do not
perform heavy-duty operations continuously.
(3) Do not place any foreign substance in the vent hole of the main body.
The outer body of this unit is provided with a vent hole for greater cooling efficiency. Since the motor has a
built-in cooling fan, a foreign substance inserted into the vent hole causes mechanical failure. Instruct your
customer never to cover or block the vent hole.
(4) Safety switch lever
The Model C 18DMR is equipped with a safety switch lever at
the side of the handle for safety. Users who are familiar with
AC-powered circular saws might feel a little awkwardness
in handling the safety switch lever. However, this lever is
equipped for user's safety. The salespersons must
Switch trigger
Safety switch lever
(also used for a
light switch)
instruct the users not to insert any foreign substance such
as a chip of wood in the safety switch lever to ensure the
correct functioning of the safety switch lever. Refer to the
Handling Instructions "Operation of Switch" for operation of the
safety switch lever.
(5) Variation in amount of work possible per charge.
Although the nominal chargeable capacity of the storage batteries used with the Model C 18DMR is
2,000 mAh, 2,600 mAh and 3,000 mAh, the actual capacity may vary within 10 %. It depends on the ambient
temperatures 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 saw
blade, etc.) and operational skill of the user.
--- 10 ---
9. REPAIR GUIDE
WARNING:
Without fail, remove the storage battery from the main body of the tool before starting repair or
maintenance work. If the battery is left in and the switch is activated inadvertently, the motor will start
rotating unexpectedly, which could cause serious injury.
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 C 18DMR.
9-1-1. Disassembly
(1) Removal of the TCT Saw Blade [3]
While pressing the Lock Lever [25], turn the Bolt (Left Hand) W/Washer M7 x 17.5 [1] clockwise with the Box
Wrench 10 mm [503] to loosen it. Remove Washer (B2) [2], TCT Saw Blade [3], Ring D15.9/I.D14.5 [4] and
Washer (A1) or (A2) or (A3) [5]. Handle the saw blade with care to avoid injury. The Ring D15.9/I.D14.5 [4] is
provided for the U.S.A., Canada and France.
[5]
[3]
[4]
[2]
[1]
Fig. 1
--- 11 ---
(2) Removal of the Protective Cover [9]
Remove the three Seal Lock Flat Hd. Screws M3 x 12 [6] and then the Bearing Cover [7]. Remove the Return
Spring [19] from the Saw Cover [18]. Remove the Protective Cover [9] from the Bearing Holder [12].
Remove the Bushing [10] from the Protective Cover [9].
[12]
[10]
[9]
[19]
[7]
[6]
Fig. 2
(3) Removal of the Saw Cover [18]
Remove the Bolt Ass'y (Square) M6 x 22 [43]. Remove the Tapping Screw (W/Flange) D5 x 50 [14] and then
the Saw Cover [18].
[18]
[14]
[44]
[38]
[43]
Fig. 3
--- 12 ---
(4) Removal of the Handle Cover [47]
Remove the five Tapping Screws (W/Flange) D4 x 16 (Black) [46] to remove the Handle Cover [47].
(5) Disassembly of the Gear [13] and Motor (B) [28]
(a) Remove the Seal Lock Flat Hd. Screw M5 x 12 [11] to remove the Bearing Holder [12], Gear [13] and
Ball Bearing 6002VVCMPS2L [8] together. Put the spindle of the Gear [13] with hand-press to remove the
Gear [13] from the Bearing Holder [12]. Remove the Ball Bearing 6002VVCMPS2L [8] from the Bearing
Holder [12].
(b) Remove the Nylock Bolt (W/Flange) M4 x 12 [22] from Inner Cover (B) [23].
(c) Remove the Ball Bearing 609VVC2PS2L [24] from the pinion of Motor (B) [28]. Remove the Lock Lever
[25] and the Spring [36], then remove the two Special Bolts M5 [26] to remove Inner Cover (A) Ass'y [27].
[28]
[27]
[25]
[26]
[24]
[23]
[22]
[36]
[13]
[11]
[12]
[8]
Fig. 4
--- 13 ---
(6) Removal of the Base Ass'y [39]
Extract the Roll Pin D6 x 50 [45] that connects the Base Ass'y [39] and the Housing [34]. Remove the Base
Ass'y [39].
[45]
[39]
[34]
Fig. 5
--- 14 ---
9-1-2. Reassembly
Reassembly can be accomplished by following the disassembly procedures in reverse, with some items to be
noted as follows.
(1) Reassembly of the components for power supply
(a) Be sure to perform wiring connections as indicated in the wiring diagram. (Fig. 9)
[28]
BROWN
[31]
[32]
[30]
RED
[29]
BLACK
[50]
[51]
[50]
[52]
BLUE
[49]
YELLOW
YELLOW
[48]
BROWN
BROWN
BLUE
[29]
[56]
[58]
[57]
[59]
[56]
[29]
Fig. 6
(b) Mount Inner Cover (A) Ass'y [27] to Motor (B) [28] as illustrated in Fig. 7.
[28]
[27]
[26]
Fig. 7
--- 15 ---
(c) Connect the internal wires as illustrated in Fig. 8. Mount the Knob [55], Terminal (A) [54] and Spring (F)
[53] without fail.
[54]
[55]
[52]
[58]
[49]
[53]
[32]
[48]
[51]
[50]
[28]
[50]
(Mounting direction of Terminals [57] [59])
B -- B
A -- A
[57]
[30]
[31]
Brown
[59]
Blue
Groove portion
Fig. 8
(2) Reassembly of the Gear [13]
(a) Apply grease (Shell Alvania RL3) to the pinion and the meshing parts of the Gear [13], and also
to the inside of the metal of Inner Cover (B) [23] (5 grams in total).
(b) When securing Inner Cover (A) Ass'y [27] to Inner Cover (B) [23] with the Nylock Bolt (W/Flange) M4 x 12
[22], be careful not to interfere with the rotation of the pinion.
--- 16 ---
(3) Checking of operation after reassembly
(a) Check that the Knob [55] operates smoothly and the switch trigger can be locked and released reliably.
Check that the Lamp (12V 5W) [31] is turned on when the Knob [55] is operated.
(b) Check that the cutting and inclining operation of the Base Ass'y [39] is smoothly performed.
(c) Check that the Protective Cover [9] operates smoothly.
(d) Check that the brake is applied when turning off the switch.
(e) Check that the arrow direction indicated on the saw blade matches the one indicated on the saw cover.
(f) Check that the saw blade turns in the arrow direction indicated on the saw cover (clockwise viewed
from the front of the saw blade).
(g) Check that runout of the saw blade is 0.6 mm or less at 150 mm dia. position.
(4) Wiring Diagram
Perform wiring as illustrated in Fig. 9. Note that wrong wiring can cause troubles such as rotation failure,
inverse rotation and brake failure.
For the model with lamp
[31]
[30]
[49]
[52]
[28]
[48]
[50]
For the model without lamp
[52]
[28]
[48]
[50]
Fig. 9
--- 17 ---
(5) Tightening torque of each screw is given below.
Machine screw of the Switch (1P Screw Type) W/O Lock [52] ... 0.4
0.1 N•m (4
1 kgf-cm, 3.5
0.9 in-lbs.)
Special Bolt M5 [26] ............................................................. 1.0
0.2 N•m (10
2 kgf-cm, 8.7
Tapping Screw (W/Flange) D4 x 16 (Black) [46] .................. 2.0
0.5 N•m (20
5 kgf-cm, 17.4
4.3 in-lbs.)
Tapping Screw D4 x 10 [29] ................................................. 2.0
0.5 N•m (20
5 kgf-cm, 17.4
4.3 in-lbs.)
Seal Lock Flat Hd. Screw M5 x 12 [11] ................................ 3.4
0.7 N•m (35
7 kgf-cm, 30.4
6.1 in-lbs.)
Seal Lock Flat Hd. Screw M3 x 12 [6] .................................. 0.8
0.2 N•m (8
Nylock Bolt (W/Flange) M4 x 12 [22] .................................... 2.5
0.5 N•m (25
1.7 in-lbs.)
2 kgf-cm, 6.9
1.7 in-lbs.)
5 kgf-cm, 22
4.3 in-lbs.)
9-2. Precautions in Disassembly and Reassembly of Battery Charger
Refer to the Technical Data and Service Manual of the Model UC 24YFA Charger for precautions in disassembly
and reassembly of this charger.
--- 18 ---
10. STANDARD REPAIR TIME (UNIT) SCHEDULES
MODEL
Variable
Fixed
10
20
30
Work Flow
C 18DMR
Switch
Socket
Handle Cover
Lamp
(12V 5W)
Housing
Inner Cover
(A) Ass'y Motor (B)
Ball Bearing
(609VV)
Inner Cover (B)
Lock Lever
General Assembly
Protective
Saw Cover
Cover Gear
Return Spring Bearing Holder
Ball Bearing
(6002VV)
Base Ass'y
--- 19 ---
40
50
60 min.
Hitachi Power Tools
LIST NO. G828
ELECTRIC TOOL PARTS LIST
CORDLESS CIRCULAR SAW
Model C 18DMR
2005
6•1
(E1)
18
17
501
•
502
16
15
14
13
503
504
11
12
10
9
7
8
19
6
21
5
3
33
4
20
35
34
32
31
30
2
29
1
28
27
55
54
25
53
26
52
24
23
49
22
50
48
29
51
56
36
59
47
46
37
57
45
56
38
29
39
40
60
44
41
42
43
38
58
PARTS
ITEM
NO.
1
C 18DMR
CODE NO.
DESCRIPTION
NO.
USED
REMARKS
998-335
BOLT (LEFT HAND) W/WASHER M7X17.5
1
2
324-563
WASHER (B2)
1
*
3
324-295
TCT SAW BLADE 165MM-D30 HOLE-NT24
1
*
3
324-294
TCT SAW BLADE 165MM-D20 HOLE-NT24
1
FOR NZL, AUS, CHN
*
3
324-293
TCT SAW BLADE 165MM-D15.9 HOLE-NT24
1
FOR USA, CAN
*
3
324-615
TCT SAW BLADE 165MM-D15.9 HOLE-NT24
1
FOR FRA
*
4
990-100
RING D15.9/I.D14.5
1
FOR FRA, USA, CAN
*
5
317-465
WASHER (A2)
1
*
5
324-569
WASHER (A3)
1
FOR GBR, FRG, FRA, NOR, SWE, DEN
*
5
317-466
WASHER (A1)
1
FOR FRA, USA, CAN
6
308-773
SEAL LOCK FLAT HD. SCREW M3X12
3
7
308-362
BEARING COVER
1
8
600-2VV
BALL BEARING 6002VVCMPS2L
1
9
324-567
PROTECTIVE COVER
1
10
318-192
BUSHING
1
11
305-568
SEAL LOCK FLAT HD. SCREW M5X12
2
12
308-361
BEARING HOLDER
1
13
324-564
GEAR
1
14
317-449
TAPPING SCREW (W/FLANGE) D5X50
3
15
949-793
FLAT HD. SCREW M5X20 (10 PCS.)
1
16
310-842
CUSHION
1
17
324-560
HITACHI PLATE
1
18
324-566
SAW COVER
1
19
317-203
RETURN SPRING
1
LABEL (LC)
1
20
21
324-577
LIGHT COVER ASS’Y
1
22
317-196
NYLOCK BOLT (W/FLANGE) M4X12
2
23
324-565
INNER COVER (B)
1
24
609-VVM BALL BEARING 609VVC2PS2L
1
25
324-568
LOCK LEVER
1
26
317-914
SPECIAL BOLT M5
2
27
324-578
INNER COVER (A) ASS’Y
1
28
324-572
MOTOR (B)
1
29
958-715
TAPPING SCREW D4X10
3
30
319-820
SOCKET
1
31
315-229
LAMP (12V 5W)
1
32
319-823
TERMINAL (D)
1
NAME PLATE
1
HOUSING
1
CAUTION PLATE
1
SPRING
1
33
34
*
324-575
35
36
961-803
37
308-364
WING BOLT (A) M6X15
1
38
948-167
SUPER LOCK WASHER M6
2
39
324-561
BASE ASS’Y
1
40
324-562
KNOB BOLT
1
41
947-859
LOCK SPRING
1
42
302-469
SLOTTED HD. SET SCREW (SEAL LOCK) M6X6
1
43
314-620
BOLT ASS’Y (SQUARE) M6X22
1
44
949-425
WASHER M6 (10 PCS.)
1
45
949-750
ROLL PIN D6X50 (10 PCS.)
1
46
305-812
TAPPING SCREW (W/FLANGE) D4X16 (BLACK)
6
--- 2 ---
INCLUD. 20
INCLUD. 26
FOR USA, CAN
INCLUD. 37, 38, 40-42
INCLUD. 38
* ALTERNATIVE PARTS
6 -- 05
PARTS
ITEM
NO.
47
*
C 18DMR
CODE NO.
NO.
USED
DESCRIPTION
324-576
HANDLE COVER
1
48
324-573
RESISTOR (A)
1
49
324-570
RESISTOR
1
50
959-141
CONNECTOR 50092 (10 PCS.)
2
51
321-002
INTERNAL WIRE
1
52
319-825
SWITCH (1P SCREW TYPE) W/O LOCK
1
53
301-631
SPRING (F)
1
54
317-207
TERMINAL (A)
1
55
324-571
KNOB
1
56
996-118
HOLDER SPRING
2
57
324-574
TERMINAL
1
58
320-997
TERMINAL PIECE
1
59
321-000
TERMINAL
1
60
322-878
BATTERY EB 1826HL (W/ENGLISH N.P.)
2
REMARKS
FOR FRG, NOR, SWE, DEN
*
60
323-564
BATTERY EB 1830HL (W/ENGLISH N.P.)
1
*
60
322-876
BATTERY EB 1830HL (W/ENGLISH N.P.)
2
FOR AUS
*
60
322-880
BATTERY EB 1820L (W/ENGLISH N.P.)
2
FOR NZL, AUS, GBR, FRG, FRA
*
60
323-016
BATTERY EB 1820L (W/ENGLISH N.P.)
2
FOR CHN
6 -- 05
* ALTERNATIVE PARTS
--- 3 ---
C 18DMR
STANDARD ACCESSORIES
ITEM
NO.
501
CODE NO.
NO.
USED
DESCRIPTION
CHARGER (MODEL UC 24YFA)
1
502
324-579
CASE
1
503
940-543
BOX WRENCH 10MM
1
504
302-756
GUIDE
1
REMARKS
OPTIONAL ACCESSORIES
ITEM
NO.
* 601
CODE NO.
NO.
USED
DESCRIPTION
REMARKS
322-876
BATTERY EB 1830HL (W/ENGLISH N.P.)
1 EXCEPT FOR CHN, USA, CAN
*
602
317-451
TCT SAW BLADE 165MM-D15.88 HOLE
1 FOR USA, CAN
*
602
317-452
TCT SAW BLADE 165MM-D20 HOLE-NT40
1 FOR NZL, AUS, CHN
*
603
324-580
DUST COLLECTOR SET (A)
1
*
603
324-581
DUST COLLECTOR SET (A)
1 FOR USA, CAN
--- 4 ---
* ALTERNATIVE PARTS
Printed in Japan
(050601N)
6 -- 05
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