Hitachi VB 13Y Manual

POWER TOOLS
TECHNICAL DATA
AND
SERVICE MANUAL
PORTABLE REBAR CUTTER/BENDER
VB 13Y
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
LIST No. 0782 Jan. 2000
V
MODEL
VB 13Y

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:
Symbols Utilized Competitors
Company Name Model Name
MCC CB-13
Y ALBA DR-12E
S

Page
CONTENTS
[ Business Section ]
1. PRODUCT NAME
••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••
1
2. MARKETING OBJECTIVE
•••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••
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3. APPLICATIONS
•••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••
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4. CAPACITY ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 1
5. SELLING POINTS ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 1
5-1. Selling Point Descriptions ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 2
6. SPECIFICATIONS ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 4
7. COMPARISONS WITH SIMILAR PRODUCTS •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 5
7-1. Working Efficiency Comparison •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 5
8. HOW TO USE THIS UNIT ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 6
9. SERVICE LIFE OF CUTTER ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 7
10. PRECAUTIONS IN SALES PROMOTION ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 7
10-1. Handling Instructions •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 7
10-2. Caution Plate ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 7
11. SAFETY INSTRUCTIONS ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 8
11-1. Pictograph Illustration and Explanation •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 9
[ Service Section ]
12. PRECAUTIONS IN DISASSEMBLYAND REASSEMBLY•••••••••••••••••••••••••••••••••••••••••••••••••••••••• 10
12-1. Disassembly ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 10
12-2. Reassembly •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 15
12-3. Wiring Diagram ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 16
12-4. Confirmation after Reassembly ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 17
12-5. Repair Procedure ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 19
12-6. Tightening Torque ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 20
12-7. Insulation Tests •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 20
12-8. No-load Current Value •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 20
13. STANDARD REPAIR TIME (UNIT) SCHEDULES ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 21
[ Appendix ]
Assembly Diagram for VB 13Y •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 22
Notice for use
Specifications and parts are subject to change for improvement.
Refer to Hitachi Power Tool Technical News for further information.

--- 1 ---
1. PRODUCT NAME
Hitachi Portable Rebar Cutter/Bender, Model VB 13Y
2. MARKETING OBJECTIVE
A compact and lightweight power tool that reduces worker fatigue and enhances work efficiency.
3. APPLICATIONS
Cutting and bending of rebars (concrete reinforcing rod) during construction of foundations and external
structures.
Cutting and bending of rebars for fitting building parts during construction of reinforced concrete buildings.
4. CAPACITY
Reinforcing bar diameter: 13 mm (1/2") or less
5. SELLING POINTS
Double-insulated
structure
Lightweight, compact and therefore easy
to carry to the work site Motorized for
reduced effort
Built-in microprocessor
Variable-speed switch
Reaction
receiver
Uniform bending angles over a wider
range of speeds, from low to high
(1) Hand-adjustable bending
(with a manual-like feel)
(2) Operable at slower
speeds, enabling anyone
to operate it more easily Both cutting and bending
possible with one unit
Hole for bolting to a
fixed base

--- 2 ---
5-1. Selling Point Descriptions
5-1-1. Motorized for reduced effort
A manual cutter/bender requires the worker to overcome a load of 392 to 490 N (40 to 50 kgf) to bend or cut a
rebar of 13 mm (1/2") diameter. The Model VB 13 Y can reduce worker fatigue because it is motorized.
5-1-2. Both cutting and bending possible with one unit
Both a cutter and a bender are required if each tool has only a single function (cutting or bending). The Model VB
13Y can perform both cutting and bending with one unit in the same manner as a manual cutter/bender.
5-1-3. Lightweight, compact and therefore easy to carry to the work site
The reason why manual cutter/benders have achieved widespread use in construction sites is that they are
compact and lightweight. The Model VB 13Y is attractively convenient for carrying to work sites because the
weight is almost the same as a manual cutter/bender (12.0 kg (26.5 lbs.)) while the size is smaller.
5-1-4. Excellent cost/performance ratio
The Model VB 13Y is about two-thirds or half the price of ordinary electric cutters or benders which have only
single functions while the Model VB 13Y can perform both cutting and bending (13 mm (1/2") dia. rebar) with one
unit. If comparisons are made with another maker's electro-hydraulic cutter/benders (capacity rebar dia. 16 mm
(5/8")), the Model VB 13Y is half the price of the electro-hydraulic cutter/bender and the cost/performance ratio is
excellent. This is because the Model VB 13Y is equipped with a gear and a cam instead of a hydraulic system for
cutting rebars, and an advanced microprocessor instead of an electromagnetic clutch for bending rebars.
Fig. 1
Load
Manual cutter/bender
Fig. 2 Cutting Fig. 3 Bending
Rebar
Variable-speed switch
Cutter
Rebar
Bending roller

--- 3 ---
5-1-5. Variable-speed switch
A manual cutter/bender has an advantage of hand-adjustable bending by eye measurement. Since the Model
VB 13Y uses a variable-speed switch, rebars can also be bent to the desired angles by eye measurement with a
manual-like feel while the conventional electric bender provides only a fixed-speed bending. The operator can
easily vary the bending speed depending on how far the switch trigger is depressed. These features make the
Model VB 13Y convenient for bending work at construction sites.
5-1-6. Built-in microprocessor
The Model VB 13Y is equipped with a microprocessor for uniform bending angles over a wider range of speeds
from low to high. Rebars can be bent according to the angles selected with the setting dial even if the bending
speed is varied. The Model VB 13Y provides uniform bending results regardless of speeds and the motor's
inertial force.
5-1-7. Double-insulated structure
The Model VB 13Y has double-insulated structure for safety in use outdoors or below the ground.
5-1-8. Reaction receiver
There is a need to prevent movement of the unit caused by cutting 5 m (197")-long rebars generally used in
construction sites. The Model VB 13Y has two reaction receivers at the front and the rear for stable operation.
5-1-9. Hole for bolting to a fixed base
A hole is provided at the center of the unit to fix and stabilize it. This hole comes in quite handy for bending
operations because it allows the unit to be bolted to a suitable work bench (bolt size M10, less than W3/8).
5-1-10. Low height
The Model VB 13Y has a unique design, with the bending unit being lower than the motor unit, to give the bender
added stability when bending long rebars. Although the maximum capacity rebar diameter is smaller than another
maker's electric cutter/bender, the Model VB 13Y is convenient to use thanks to its lower height (135 mm (5-5/
16")) while the other maker's electric cutter/bender is 245 mm (9-41/64") high.
5-1-11. Center plate with marking for bending position adjustment
The Model VB 13Y eliminates manual marking work
required for bending rebars with a manual cutter/bender
because the center plate has reference markings for
easy bending position adjustment. Rebar
Fig. 4
Center plate
Marked lines
Bending roller

--- 4 ---
Capacities
Number of piece that can be
processed at one time
Motor type
Enclosure
Insulation structure
Switch
Power source
Voltage and current
Power input
Rotation speed
Weight
Packaging
Cord
Standard accessories
6. SPECIFICATIONS
VB 13Y
(1) Material; Rebar: Yield strength 460N/mm2(47 kgf/mm2) max.
GRADE 460 (Great Britain)
BST 500 (Germany)
B 500 (Spain)
GRADE 40 (U.S.A.)
or equivalent grades
(2) Diameter of material: 8 --- 13 mm (3/8" --- 1/2"))
AC single-phase series commutator motor
Materials: Aluminum alloy die cast
Glass-fiber reinforced resin (Housing, handle, tail cover)
Painting: Silver, light green, black
Double insulation
Speed control switch
Single-phase AC 50 Hz
1.3 A (230 V)
285 W
0 --- 16 /min.
Product: 12.0 kg (26.5 lbs.); excluding cord
Packed: 13.1 kg (28.9 lbs.)
Corrugated cardboard box
Two core cabtire cable
2.5 m (8.2 ft.)
Allen key (for M5 hexagon socket bolt) • •••••••••••••••••••••••••••••••••••• 1 pc.
One set of cutters •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 1 set.
Net
Gross
Type
Overall length
Cutting
10 mm (3/8") max. ••••• 1 piece
13 mm (1/2") max. ••••• 1 piece
Bending
10 mm (3/8") max. ••••• 2 pieces
13 mm (1/2") max. ••••• 1 piece
Model

--- 5 ---
7. COMPARISONS WITH SIMILAR PRODUCTS
Specification Comparisons
HITACHI
Length
Height
Width
VB13Y YS
Maker
Model name
Power Input
Rotation Speed
Dimensions
Insulation Structure
Full-load vibration level
No-load Noise Level
W
W
mm
Power Output /min
mm
mm
dB (VL)
dB (A)
kg
285
300
16
430
(16-15/16")
196
(7-3/4")
197
(7-3/4")
Double
Insulation
91.4
79
12.0
(26.5 Ibs.)
Weight
(excluding cord)
1,050
(41-3/8")
115
(4-17/32")
220
(8-21/32")
11.5
(25.4 Ibs.)
950
(37-7/16")
250
(9-27/32")
135
(5-5/16")
12.3
(27.1 Ibs.)
7-1. Working Efficiency Comparison
HITACHIMaker
Model name VB 13Y SY
Capacity Rebar Dia. mm 13
(1/2") 13 (1/2") 13 (1/2")
Drive System
Cutting Time
Bending Time (180˚)
seconds/operation
seconds/operation
Motorized gear
drive system Manual Manual
3.2
4
*10
*15 13
Fig. 5
Load
Manual cutter/bender
Fig. 6
Load
* The data shown in the above table are mean values of 50 bending operations. (The cutting time and
bending time may vary in accordance with operating conditions such as the load to be applied.)
The cutter/bender sketched below is also used in Europe.

--- 6 ---
8. HOW TO USE THIS UNIT
(1) Cutting work (Fig. 7)
(2) Bending work (Fig. 8)
Fig. 7
Fig. 8
Fig. 7, 8-a
Rebar
Cutter
Setting dial
Alignment marks
Variable-speed switch
Rebar
Variable-speed switch
Bending roller
To switch between cutting and bending
To adjust bending angle (0 fl --- 180 fl)

--- 7 ---
9. SERVICE LIFE OF CUTTER
The life of a cutter edge is rated at 2,500 operations. (5,000 operations using both edges of each cutter blade).
When the edge of a cutter is worn out or deformed, turn the cutter around so that the other edge is properly set or
replace the cutter with new one.
10. PRECAUTIONS IN SALES PROMOTION
In the interest of promoting the safest and most efficient use of the Model VB 13Y Portable Rebar Cutter/Bender
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 attached to each tool.
10-1. Handling Instructions
Salespersons must be thoroughly 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 for use of the
portable rebar cutter/bender which is different from those of ordinary electric power tools.
10-2. Caution Plate
Each Model VB 13Y unit is provided with a Caution Plate (illustrated below) which lists basic safety precautions in
its use. Carefully ensure that the customer fully understands and follows these precautions before using the tool.
For Europe and the other

--- 8 ---
11. SAFETY INSTRUCTIONS
Be particularly careful to ensure that the customer understands the following precautions which are listed on the
Handling Instructions and Caution Plates attached to the main body of each tool.
(1) Do not cut and/or bend any materials other than rebar.
Avoid any work exceeding the maximum capacities of the unit described in the specifications. Otherwise, the
cutter can be damaged and the material can shatter into pieces.
(2) While turning the switch on, never put your hand close to the cutter.
For the sake of safe operation, the Model VB 13Y is designed as follows:
Cutter cover is provided.
Gear cover prevents finger access to the cutter.
Bending unit has no opening.
Bending unit is designed so that fingers cannot be inserted.
Although these safety measures are taken, the opening of the cutter must be exposed for workability.
Unintentional starting with fingers touching the cutter can cause serious injury. Never bring your hand close
to the cutter while the plug is connected to a receptacle.
(3) Make absolutely sure that the cutter cover is closed when
you are not carrying out cutting work. If the cover is kept
open, the cutter can jam on foreign objects and cause
serious accidents.
(4) Reserve an extra length of at least 120 mm (4 --- 23/32")
on the bending length of the rebar to be bent (Fig. 9).
If the extra length is not long enough, the rebar can come
off during the bending operation, or it can break into fragments
and scatter dangerously.
(5) Begin operation only after making sure that there are no people or objects within the turning range of the
material to be bent.
(6) If the switch is turned off and then immediately turned on again, the motor may not start, as a safety
precaution. Wait for at least one full second before attempting to turn the motor on again after it has been
switched off.
(7) Note that the unit is not a hand-held tool. Be absolutely sure to use the unit only after placing it on a stable
surface such as a floor, the ground, etc.
(8) Be sure to unplug the power cord from the receptacle when the cutter is being checked, cleaned, or parts
replaced. Failure to do so can result in a serious injury.
Fig. 9
120 mm (4 --- 23/32") or more
Extra length

--- 9 ---
11-1. Pictograph Illustration and Explanation
Begin operation only after
making sure that there are no
people within the turning range
of the material to be bent.
Read handling instructions before use.
Never bring your hand close to the
cutter during operation.
Avoid any work exceeding the
maximum capacities.
(Rebar diameter 13 mm (1/2") )
If the switch is turned off and then
immediately turned on again, the
motor may not start. Wait for at
least one full second before
attempting to turn the motor on
again after it has been switched off.
Do not attempt to cut two rebars
at one time.
Do not use or leave this electric
power tool in wet weather
conditions.

--- 10 ---
12. PRECAUTIONS IN DISASSEMBLY AND REASSEMBLY
The [Bold] numbers in the descriptions below correspond to the item numbers in the Parts List and exploded
assembly diagram.
12-1. Disassembly
(1) Disassembly of the handle (Fig. 10)
Remove the two Tapping Screws (W/Flange) D4 x 20 [81] and the Tail Cover [82]. Remove the two Tapping
Screws (W/Flange) D5 x 20 [104], four Tapping Screws D4 x 20 (W/Flange) [81] and two Machine Screws
(W/Washers) M5 x 20 [105] to remove the Handle (A).(B) Set [94].
(2) Removal of the cable (Fig. 11)
Disconnect the connector by pulling the rubber bushing and the cable in the direction of the arrow.
*1. Gently pull the cable by moving it from side to side to disconnect the connector.
*2. If the one part of the connector remains in the gear cover due to yanking the cable, disassemble the gear
cover referring to "(5) Disassembly of the gear" and remove the remaining connector from the gear cover.
Fig. 10
Connector Cable
Rubber bushing
Fig. 11
Gear cover
CableCable
connector Rubber
bushing
[82] [81] [98]
[95]
[81]
[86]
[88]
[13]
[22]
[105]
[104]
[94]

--- 11 ---
(3) Disassembly of the power supply unit
1) Removal of the Controller Circuit [95] (Fig. 10)
Remove the rubber bushing and pull out the cable of the Controller Circuit [95] from the Gear Cover Ass'y
[22]. Disconnect the cable connector from the cable and separate the Controller Circuit [95] from the Gear
Cover Ass'y [22]. (The cable connector can be disconnected by pulling it out with hands.) Disconnect the
Connector [98] which connects the seven internal wires with the Stator Ass'y [88].
2) Disassembly of the housing
Remove the Brush Cap [76] and take out the Carbon Brush [77]. Remove the four Hex. Socket Hd. Bolts
(W/Flange) M5 x 30 [79] from the Housing Ass'y [86]. The Housing Ass'y [86] can then be removed from
the Inner Cover Ass'y [13].
(4) Disassembly of the bending unit (Fig. 12)
1) Remove the Hex. Socket Hd. Bolt M5 x 12 [1], Hex. Socket Hd. Bolt (W/Flange) M5 x 16 [29] and the
Center Plate (A) [3].
2) Remove the Hex. Socket Hd. Bolt M5 x 12 [1] and the Roller (B) [30].
3) Remove the Lever (A) [31], Turn Table [5] and the five Flat Hd. Screws M4 x 10 [32] to remove the Cam
Cover [6].
Fig. 12
[1] [31] [29]
[3]
[6]
[5]
[32]
[30]
[1]

--- 12 ---
Fig. 13-a
Fig. 14
(5) Disassembly of the gear (Figs. 13, 14 and 15)
1) Remove the two Hex. Socket Hd. Bolts (W/Flange) M4 x 10 [58] from the bottom of the Gear Cover Ass'y
[22] and remove the Sensor Cover [28] and the O-Ring (S-85) [27].
2) Mark the engagement point between the Sensor Gear [26] and the Sensor Gear [56] with a magic marker
as shown in Fig. 13-b. Then, remove the Seal Lock Screw (W/SP. Washer) M4 x 12 [36] and Washer (B)
[57] to remove the Sensor Gear [56] (Fig. 13).
Fig. 13-b Disassembly
Fig. 13-c Reassembly
3) Remove the seven Hex. Socket Hd. Bolts (W/Flange) M5 x 16 [29] and the Gear Cover Ass'y [22].
Then First Pinion (B) [55], Second Pinion [47] and Third Pinion [43] can be removed. The Final Gear [18]
can be removed by removing the Retaining Ring for D25 Shaft [19]. If it is hard to remove the Final Gear
[18], use a bearing puller for removal. The Cam Shaft [12] can be removed just by pulling upward (toward
Cam Cover [6]) if the Final Gear [18] has already been removed.
* Marking should be made for easy reassembly. Otherwise,
adjust the sensor gears so that the number of teeth between
the engagement point and the projection is the same each
other as shown in Fig. 13-c and then mount them. Fig. 13
Mark the engagement
point before disassembly.
B (Engagement point)
The number of teeth
between the point B
and the projection
should be the same.
Adjust the position
of the protrusions by
turning the gear.
Projection
Not removable
[58] [28]
[36]
[56]
[57]
[24] [23]
[29]
[26]
[56]
[29]
[28]
[58]
[27]
[22]
[36]
[57]

--- 13 ---
(6) Disassembly of the gear unit (Figs. 16, 17 and 18)
1) Press First Pinion (B) [55] in A direction with a hand press supporting the surfaces B and C respectively.
Then remove Sleeve (B) [50], First Gear (B) [51], Clutch Spring [52], Collar (A) [53] and Washer [54] (Fig.
16).
2) Remove the Second Pinion [47] from the Second Gear [48] by pressing with a hand press (Fig. 17).
3) Remove the Feather Key [44] and the Third Pinion [43] from the Third Gear [45] by pressing with a hand
press (Fig. 18).
Press-fitted
B surface
Fig. 16
(7) Removal of bracket (A), bracket (B) and covers (Figs. 19 and 20)
1) Remove the Seal Lock Screw (W/SP. Washer) M4 x 12 [36] and Thrust Washer [37] that fix the Return
Spring [38] from the upper surface of the Inner Cover Ass'y [13]. Then remove the Return Spring [38] from
the Inner Cover [13] (by prying it off with a flat-blade screwdriver).
2) Remove the two Hex. Socket Hd. Bolts M5 x 16 [67] and the Flange Nut M12 [39] from the inside of the
Inner Cover Ass'y [13]. Then remove Bracket (A) [68], Bracket (B) [73], Cover [63] and O-Ring (S-34) [64]
from the Inner Cover [13].
Press-fitted
Fig. 17 Fig. 18
C surface
Third Pinion Second Pinion First Pinion (B)
Fig. 15
[12]
[19]
[18]
[52] [50] [51] [47]
[48]
[43] [44]
[45]
[54]
[53]
[55]
A

--- 14 ---
Fig. 19 Fig. 20
(8) Disassembly of bracket (A) and (B) unit (Fig. 20)
Press the Bolt (A) [65] with a hand press supporting Bracket (A) [68]. Then the Feather Key [66], Bracket (A)
[68] and Bracket (B) [73] can be removed.
(9) Disassembly of bracket (A) unit (Fig. 21)
1) Remove the Retaining Ring for D9 Shaft [61]. Then the Pin for Spring [72], Spring (C) [71] and Cutter
Guard [70] can be removed.
2) Pull out the Needle [60] with a hand press to remove Roller (C) [62] from Bracket (A) [68].
(10) Disassembly of the cam shaft unit (Fig. 22)
Remove the Cam [8] and two Feather Keys [34] from the Cam Shaft [12] with a hand press.
Fig. 21
[39]
[13]
[38]
[36]
[37]
[67]
[64]
[68]
[34]
[67] [66] [65]
[63]
[13]
[73]
[72]
[71]
[70]
[61] [68]
[62]
[60]
Hook

--- 15 ---
Folded portion
12-2. Reassembly
Reassembly can generally be carried out as the reverse of
the disassembly procedure, with some items to be noted as
follows.
(1) Reassembly of the cam shaft unit (Fig. 22)
Perform reassembly so that the chamfered portion of the
Cam Shaft [12] is aligned with the pins of the Cam [8] in
the same direction.
* Otherwise, the Sensor Gear [56] cannot be mounted in
the proper position and damage to the volume and the
gear will result. Be sure to check the mounting direction
after reassembly.
(2) Reassembly of bracket (A) unit (Fig. 23)
Mount Bracket (A) [68] to Spring (C) [71] so that the
folded portion of Spring (C) [71] securely fits in the notch
of the Cutter Guard [70] (Fig. 23). Apply grease
(TUFREX 251) to the hole of Roller (C) [62] adequately
(Fig. 24).
(3) Reassembly of bracket (A) and (B) unit (Fig. 24)
Mount the Bolt (A) [65] to Bracket (A) [68]. Apply grease
(TUFREX 251) to the shaded areas shown in Fig. 24
adequately. Mount the Feather Key [66] to Bracket (A)
[68] and press-fit it to Bracket (B) [73].
(4) Installation of bracket (A) and (B) unit to the inner cover
(Figs. 19 and 20)
Mount bracket (A) and (B) unit into the Inner Cover Ass'y
[13] and secure it with two Hex. Socket Hd. Bolts M5 x 16
[67] and the Flange Nut M12 [39]. Hook one end of the
Return Spring [38] in the groove of the Pin for Spring [72]
and the other end on the projection of the Inner Cover
Ass'y [13]. Secure it with the Thrust Washer [37] and the
Seal Lock Screw (W/SP. Washer) M4 x 12 [36].
* For easy reassembly, mount the Return Spring [38] first
before mounting the Cam Shaft [12]. Use a flat-blade
screwdriver for mounting the Return Spring [38].
Fig. 24
Fig. 23
Fig. 22
[68]
[70]
[62]
[65]
[60]
[61]
[62]
[73]
[72]
[71]
[69]
[67]
[69]
[70]
[67]
Apply grease.
[71]
[66]
[72]
[8]
Pin
Same direction
Chamfered portion
[34]
[12]
[68]

--- 16 ---
(5) Reassembly of bending unit (Figs. 12 and 22)
Mount the Cam Cover [6], Turn Table [5] and Center Plate (A) [3] in the reverse of the disassembly procedure.
Before mounting the Center Plate (A) [3], apply grease (TUFREX 251) to the 18 mm dia. hole of Center Plate
(A) [3] adequately. Check that the hole of the Turn Table [5] and the pin of the Cam [8] are properly adjusted
to ensure smooth movement of Roller (B) [30].
(6) Installation of gears
Apply grease (Nippeko SEP-3A) to the meshing parts of First Pinion (B) [55], Second Pinion [47], Third Pinion
[43] and Final Gear [18], and mount them in the reverse of the disassembly procedure. Apply grease
(TUFREX 251) to the Clutch Spring [52], Collar (A) [53] and the boss of First Gear (B) [51] adequately. Check
that the Sensor Holder Ass'y [23] is mounted and the wiring is completed. Secure the Inner Cover Ass'y [13]
and the Gear Cover Ass'y [22] with seven Hex. Socket Hd. Bolts (W/Flange) M5 x 16 [29].
* Perform wiring of the Sensor Holder Ass'y [23] in this step. Wiring in later step is impossible though the
Sensor Holder Ass'y [23] is secured with the Tapping Screw D3 x 12 [24] in the next step (Fig. 13-a).
(7) Installation of the Sensor Gear [56] (Fig. 13)
Mount the Sensor Gear [56] in the reverse of the disassembly procedure shown in 12-1 (5) 2). Pay attention
to the mounting position of the Sensor Gear [56].
12-3. Wiring Diagram
Be sure to perform wiring connections as indicated in the wiring diagrams.
For products without noise suppressor
Armature
Cord
Stator Stator
Printed Circuit
Board Ass'y
Switch
Control Circuit Ass'y
Fig. 25

--- 17 ---
Cord
For products with noise suppressor
12-4. Confirmation after Reassembly
(1) Check the accuracy with an angle gauge (Figs. 27, 28 and 29).
1) Adhere an angle gauge to the Turn Table [5] (Fig. 27).
2) Turn the Volume Holder Ass'y [100] (bending angle selector) clockwise until it is locked (Fig. 28).
3) Pull the trigger slightly to run the machine as slow as possible.
4) It is all right if the Turn Table [5] starts backward rotation from the marked line for 13 mm dia. bar with the
marking on the angle gauge aligned (Fig. 29).
5) If the marking on the angle gauge is not aligned with the marked line for 13 mm dia. bar, perform
adjustment according to the next step (2).
<Initial position>
Fig. 26
Fig. 27
Printed Circuit
Board Ass'y
Capacitor
(0.22 µF + 2 x 3300 pF)
Control Circuit Ass'y
CR Unit
(0.022 µF + 5 KΩ)
Switch
Stator
CR Unit
(0.022 µF + 5 KΩ)
Stator
Choke Coil
8 µH
Armature
Choke Coil
5 µH
Angle gauge Align with the perimeter.
[5]