Hitachi CV 350V User manual

PRODUCT NAME
Hitachi Multi Tool
Model CV 350V
CONTENTS Page
LIST No.
CV 350V: E728
Dec. 2014
REPAIR GUIDE ----------------------------------------------------------------------------------------------------------------1
1. Precautions on disassembly and reassembly -----------------------------------------------------------1
STANDARD REPAIR TIME (UNIT) SCHEDULES --------------------------------------------------------------------9
C
Overseas Sales Division

-1-
Be sure to disconnect the power cord plug from the power supply before conducting repair. Otherwise, the
motor may suddenly turn on, posing a very dangerous situation.
1. Precautions on disassembly and reassembly
[Bold] numbers in the description below correspond to the item numbers in the Parts List and exploded
assembly diagram of the Model CV 350V.
1. Disconnecting the wiring
(1) Loosen the three Screws D4 x 20 [1] and remove Tail Cover (A).(B) Set [33].
(2) Lift up the spring of the Brush Holder [30] and then pull out the Carbon Brush [32].
(3) Pull out the terminal that connects the Carbon Brush [32] and the Stator [23] and remove the Carbon
Brush [32].
(4) Cut the internal wire connected to the Connector [42] at its connection root and remove the Controller
[35].
(5) Desolder the terminal of the Micro Switch [34] and disconnect the internal wire to remove the Micro
Switch [34].
(6) Pull out the wire in the center of the Noise Suppressor [40] from the Housing [27] and remove the
Noise Suppressor [40].
(7) Loosen the two Screws D4 x 16 [39] and remove the Cord Clip [38] and Cord [44].
2. Removing the head case and armature ass’y set
(1) Loosen the four Screws D3 x 16 [25] and remove Head Cover (A).(B) Set [24].
(2) Loosen the four Screws D4 x 20 [1] and remove the Head Case [3] from the Housing [27].
(3) Pull out the Armature Ass'y Set [10].
3. Removing the lever
(1) Place the Head Case [3] on an adequate stand with the Lever [7] fitted to the Lever Guide [9]. Using a
hand press, push the Needle Roller [2] to remove it. Remove the Lever [7] and the Pushing Piece [6].
(2) Loosen the Screw M4 x 6 [8] and remove the Lever Guide [9].
(3) Pull out the Sleeve Cap [4].
4. Disassembling the armature ass’y set
(1) Insert the hooks of a bearing puller between the Bearing Cover [17] and the Bearing Holder [11], and
then remove the Bearing Holder [11].
(2) Remove the Retaining Ring [13].
(3) Insert the hooks of a bearing puller into both ends of the Ball Bearing-R 607VV [14] and remove the
Ball Bearing-R 607VV [14].
(4) Pull out the Balancer [15].
(5) Insert the hooks of a bearing puller into both ends of the Ball Bearing 6000VV [16] and remove the Ball
Bearing 6000VV [16].
(6) After removing the Ball Bearing 6000VV [16], remove the Bearing Cover [17].
5. Removing the stator and slide bar
(1) Remove the Fan Guide [22]. Lightly tap on the Housing [27] where the Head Case [3] was mounted
with a plastic hammer and remove the Stator [23] from the Housing [27].
(2) Push the tab of the Slide Knob [26] inward and remove the Slide Knob [26] and Slide Bar [29].
REPAIR GUIDE
Disassembly

-2-
• Mounting the lever
• Mounting the stator
Reassembly can be conducted by reversing the disassembly procedure, but note the following:
1. Mounting the lever
(1) To mount the Lever [7] and Pushing Piece [6] to the Head Case [3], place the Head Case [3] on an
adequate stand and use a hand press to press the Needle Roller [2]. Do not reverse the orientation of
the Pushing Piece [6] when mounting.
2. Reassembling the armature ass’y set
Press-fit the Ball Bearing 6000VV [16] into the Bearing Holder [11] until the Ball Bearing 6000VV [16]
touches the fan of the Armature Ass'y Set [10]. Do not push in the Ball Bearing 6000VV [16] excessively.
Do not forget to mount the Bearing Cover [17].
3. Mounting the stator
Mount the Slide Knob [26] and Slide Bar [29] to the Housing [27] first. Then mount the Stator [23] in the
Housing [27] being careful of the orientation of the internal wires.
Reassembly
Thick Pushing Piece [6]
Lever Guide [9]
Head Case [3]
Needle Roller [2]
Thin
Lever [7]
NOTE: Be sure to mount the correct head case.
The Head Case [3] for the Model CV 350V
has a black mark as shown in the figure,
but the head case for the Models
CV 14DBL and CV 18DBL does not.
Stator [23]
Slide Knob [26]
Housing [27]
Slide Bar [29]
Place the internal wire on the HITACHI logo side.

-3-
• Connecting the wiring for Europe, Australia, New Zealand, Turkey, and South Africa
4. Connecting the wiring
(1) Put the Cord [44] through the CordArmor [37] and solder it to the Micro Switch [34].
(2) Put the Earth Terminal [43] of the Noise Suppressor [40] through the hole on the Housing [27] and
insert it between the Housing [27] and Stator [23].
(3) Put the internal wires in the specified grooves being careful not to be pinched.
Put the Cord [44] through the Cord Armor [37]. Micro Switch [34]
Internal Wire [41]
After soldering, wrap the soldered
portions with heat-shrinkable tubes.
Put the red internal wire in the groove. Put the black internal wire in the groove.
Put the blue internal wire in the groove.
Controller [35]
Noise Suppressor [40]
Ferrite Core [36]
Crimp the Earth Terminal [43].
Wind the internal wire twice.
40
Bend at the
terminal
j
oints.
Put two brown internal wires of
the Stator [23] in the groove.
Put two blue internal wires of the Stator [23] and a white
internal wire of the Noise Suppressor [40] in the groove.
Insert the Earth Terminal [43] into the Housing [27].
Earth Terminal [43]
Bend.
Micro Switch [34] Put the blue internal wire of the Stator [23] in the groove.
Slide Bar [29] Slide Knob [26] Tab
Tail cover (A)
Controller [35]
Noise Suppressor [40]
Ferrite Core [36]

-4-
Tail cover (A)
Tab
Slide Knob [26]
Slide Bar [29]
Bend at the
terminal joints. Put the black tube of the Stator [23] in the groove.
• Connecting the wiring for UK (110 V), Taiwan, and UAE (110 V)
Put the Cord [44] through the Cord Armor [37].
Noise Suppressor [40]
Crimp the Earth Terminal [43].
Micro Switch [34]
Internal Wire [41]
Put the black tube of the Stator [23]
and brown internal wire in the groove.
Put the black tube and blue internal wire of
the Stator [23], and white internal wire of the
Noise Su
pp
ressor
[
40
]
in the
g
roove.
Insert the Earth Terminal [43] into the Housing [27].
Earth Terminal [43]
Bend.
Cord Clip [38]
Micro Switch [34]
Controller [35]
Noise Suppressor [40]
After soldering, wrap the soldered
portions with heat-shrinkable tubes.
Controller [35]
Put red internal wire in the groove. Put the black internal wire in the groove.
Put the white internal wire in the groove.
Direction of the Cord Clip [38]
Outside dia. of the cord:
8.5 mm or less Outside dia. of the cord:
more than 8.5 mm

-5-
• Connecting the wiring for Asia
Bend at the terminal joints.
Micro Switch [34]
Put the two brown internal wires
of the Stator [23] in the groove.
Put the two blue internal wires of
the Stator [23] in the groove.
Put the blue internal wire of the Stator [23] in the groove.
Slide Bar
[
29
]
Slide Knob [26] Tab
Tail cover (A)
Controller [35]
Put the Cord [44] through the Cord Armor [37]. Micro Switch [34]
Internal Wire [41]
Put the red internal wire in the groove. Put the black internal wire in the groove.
Put the blue internal wire in the groove.
Controller [35]
Bend.
After soldering, wrap the soldered
portions with heat-shrinkable tubes.

-6-
• Mounting the sleeve cap
5. Reassembling the head section
(1) Mount the Armature Ass’y Set [10] to the Head Case [3] by hand without using any tool such as a
hand press. Otherwise, the fan may be misaligned due to excessive force and abnormal noise or
vibration may occur.
(2) Carefully mount the Armature Ass’y Set [10] and Head Case [3] reassembled in the above step (1) to
the Housing [27] by hand without tilting. Then secure it with four Screws D4 x 20 [1].
(3) Secure Head Cover (A).(B) Set [24] with four Screws D3 x 16 [25].
(4) Mount the Sleeve Cap [4] to the Head Case [3] in the same manner as the accessory mounting
procedure.
a) Pull up the Lever [7]. Pull the guide sleeve down and turn it to remove the Tool Shaft [5].
b) Align the mark on the Sleeve Cap [4] with the mark on Head Cover (A).(B) Set [24] to mount.
c) Pull the guide sleeve by holding the Sleeve Cap [4] and turn it to the opposite side. Check that the
mark on the Sleeve Cap [4] is aligned with the mark on Head Cover (A).(B) Set [24].
d) Turn the guide sleeve toward the mark and insert the Tool Shaft [5].
e) Turn the guide sleeve toward the mark and pull the lever down being careful not to pinch your
fingers.
(1) Pull up the lever until it
becomes parallel to
the tool body.
Lever [7]
Guide sleeve
(2)(3)(4) Pull the guide sleeve down
and turn it in the arrow
direction to remove the
Tool Shaft [5].
(2)
(3)
(5)
(5) Align the mark on the
Sleeve Cap [4] with the
mark on Head Cover
(A).(B) Set [24] to mount.
(1)
(6)
(7)
(9) Turn the guide sleeve toward the mark
and pull the lever down. Be careful not to
get your fingers pinched.
(8) Turn the guide sleeve toward the
mark and insert the Tool Shaft [5].
(6)(7) Turn the guide sleeve in the opposite direction and
check that the mark is aligned with the mark
on Head Cover
(
A
)
.
(
B
)
Set
[
24
]
.
Tool Shaft [5]
Sleeve Cap [4]
(4)

-7-
Apply Powerlite WR No. 1 lubricant (Kyodo Yushi Co., Ltd.) to the following parts.
• Swing arm of the Head Case [3]················································································9 grams
• Ball Bearing-R 607VV [14] and O-ring (S-35) [12] at the fan side of theArmature Ass’y Set [10]
• Outer periphery of the Needle Roller [2]
NOTE: Do not apply lubricant to the Pushing Piece [6].
• Screw D4 x 20 [1] ·································································2.0 ± 0.5 N•m {20 ± 5 kgf•cm}
• Screw M4 x 6 [8] ··································································1.8 ± 0.4 N•m {18 ± 4 kgf•cm}
• Screw D3 x 16 [25] ·······························································1.3 ± 0.3 N•m {13 ± 3 kgf•cm}
• Screw D3 x 8 [31] ·································································0.74 ± 0.15 N•m {7.5 ± 1.5 kgf•cm}
• Screw D4 x 16 [39] ·······························································2.0 ± 0.5 N•m {20 ± 5 kgf•cm}
Check the following after reassembly.
(1) Turn the switch on and off, and turn the dial to change speed. Check that the switch and dial move
smoothly, and that the tool starts, stops, and changes speed normally.
(2) Check that the accessory can be mounted and removed securely.
(3) Check that the Tool Shaft [5] can be pushed in and pulled out normally when the mark on Head
Cover (A).(B) Set [24] is aligned with the mark on the Sleeve Cap [4], and that the Tool Shaft [5]
cannot be pulled out when the mark is aligned with the mark.
(4) Cut wood at the dial setting “A.” Check that the tool runs fast during cutting and slow after cutting.
On completion of disassembly and repair, measure the insulation resistance and dielectric strength.
Insulation resistance: 7 Mȍor more with a 500 VDC megohm tester
Dielectric strength: 4,000 VAC/minute, with no abnormalities
After three minutes of no-load operation, no-load current values should be as follows:
1.5 ± 0.3 A at 110 V 50/60 Hz
0.9 ± 0.2 Aat 220 V 50/60 Hz
0.9 ± 0.2 Aat 230 V 50/60 Hz
0.8 ± 0.2 Aat 240 V 50/60 Hz
Lubrication points and type of lubricant
Screw tightening torque
Insulation test
No-load cu
r
rent value
Checking after reassembly

-8-
• Connecting diagram for Asia
• Connecting diagram for UK (110 V), Taiwan, and UAE (110 V)
• Connecting diagram for Europe, Australia, New Zealand, Turkey, and South Africa
Connecting diagram
Connector [42]
Connector [42]
Connector [42]
Cord [44]
Brown
Blue
Micro Switch [34]
Red
Black
Blue
Controller [35] A
C
B
Stator [23]
Blue
Blue
Brown Brown
White
White
Internal Wire [41]
Controller [35]
Stator [23]
Internal Wire [41]
Micro Switch [34]
White
White Brown
Black Blue Red
Black
A
B
C
White Black
Black
White
Cord [44]
Noise Suppressor [40]
Black
Black
Red
White
Connector [42]
Connector [42]
Connector [42]
Connector [42]
Connector [42]
Connector [42]
Cord [44]
Brown
Blue
Micro Switch [34]
Red
Black
Blue
Controller [35] A
C
B
Stator [23]
Blue
Blue
Brown Brown
White
White
Internal Wire [41]
Black
Black
White
Noise Suppressor [40]
Ferrite Core [36]

-9-
MODEL Variable
Fixed 10 20 30 40 50 60 min.
CV 350V
General assembly
Housing
Stator
Slide Bar
Slide Knob
Fan Guide
Armature
Ass'y Set
Bearing
Holder
Ball
Bearing-R
607VV
Balancer
Ball Bearing
6000VV
Work Flow
Carbon Brush
Micro Switch
Tail Cover
(A).(B) Set
Cord
Cord Armor
Controller
Head Case
Ass'y
Head Cover
(A).(B) Set
Lever
Needle Roller
Lever Guide
Tool Shaft
STANDARD REPAIR TIME (UNIT) SCHEDULES

Model CV 350V
MULTI TOOL
LIST NO. E728
2014·12·10
(E1)
36
508
1
2
3
4
5
6
7
8
9
11
12
13 14 15
10
16
17
18 19 20 21
22
23
24
25
26
27
28
29
30
1
31
32
34
35
33
40 41
42
37
38
39
44
501
503
504 505
506
502
507 510
509
511 512
43

PART
S
CV 350V
DESCRIPTION REMARKS
1 301653 TAPPING SCREW (W/FLANGE) D4 X 20 (BLACK) 7
2 337668 NEEDLE ROLLER 1
3 337662 HEAD CASE 1
4 337665 SLEEVE CAP 1
5 337671 TOOL SHAFT 1
6 337667 PUSHING PIECE 1
7 337666 LEVER 1
8 337670 SEAL LOCK SCREW M4 X 6 1
9 337669 LEVER GUIDE 1
* 10 360984C ARMATURE ASS'Y SET 110V 1 INCLUD.11-21
* 10 360984E ARMATURE ASS'Y SET 220V-230V 1 INCLUD.11-21
* 10 360984F ARMATURE ASS'Y SET 240V 1 INCLUD.11-21
11 337663 BEARING HOLDER 1
12 337664 O-RING (S-35) 1
13 994251 RETAINING RING FOR D7 SHAFT 1
14 338037 BALL BEARING-R 607VV 1
15 337675 BALANCER 1
16 6000VV BALL BEARING 6000VVCMPS2L 1
17 337672 BEARING COVER 1
18 321722 DUST SEAL 1
19 626VVM BALL BEARING 626VVC2PS2L 1
20 337676 SENSOR MAGNET 1
21 337677 PUSHING NUT 1
22 337683 FAN GUIDE 1
* 23 340890C STATOR 110V 1
* 23 340890E STATOR 220V-230V 1
* 23 340890F STATOR 240V 1
24 337661 HEAD COVER (A).(B) SET 1
25 313687 TAPPING SCREW (W/FLANGE) D3 X 16 (BLACK) 4
26 337680 SLIDE KNOB 1
27 337660 HOUSING 1
28 NAME PLATE 1
29 337679 SLIDE BAR 1
30 333844 BRUSH HOLDER 1
31 328210 TAPPING SCREW D3 X 8 4
32 999005 CARBON BRUSH (1 PAIR) 2
33 337678 TAIL COVER (A).(B) SET 1
34 335460 MICRO SWITCH 1
* 35 337681 CONTROLLER 100V-110V 1
* 35 337682 CONTROLLER 220V-240V 1
* 36 334379 FERRITE CORE 1 FOR EUROPE,AUS,NZL,SAF,RUS,TUR,GBR (230V)
* 37 953327 CORD ARMOR D8.8 1
* 37 938051 CORD ARMOR D10.1 1
38 937631 CORD CLIP 1
39 984750 TAPPING SCREW (W/FLANGE) D4 X 16 2
* 40 334472 NOISE SUPPRESSOR 1 FOR EUROPE,AUS,NZL,SAF,RUS,
TUR,GBR,TPE,UAE (110V)
41 338119 INTERNAL WIRE 1
42 959140 CONNECTOR 50091 (10 PCS.) 3
* 43 314854 EARTH TERMINAL 1 FOR EUROPE,AUS,NZL,SAF,RUS,
- 2 - 12 - 14*ALTERNATIVE PARTS
ITEM
NO. NO.
USED
CODE NO.

PART
S
CV 350V
DESCRIPTION REMARKS
TUR,GBR,TPE,UAE (110V)
* 44 500247Z CORD 1 (CORD ARMOR D8.8)
* 44 500409Z CORD 1 (CORD ARMOR D8.8) FOR VIE,INA,
IND,SAF,TUR,RUS
* 44 500435Z CORD 1 (CORD ARMOR D8.8) FOR SIN,MAL,
UAE,HKG,GBR (230V)
* 44 500439Z CORD 1 (CORD ARMOR D8.8) FOR AUS,NZL
* 44 500461Z CORD 1 (CORD ARMOR D8.8) FOR GBR (110V)
* 44 930051 CORD 1 (CORD ARMOR D10.1) FOR UAE
* 44 500468Z CORD 1 (CORD ARMOR D8.8) FOR THA
* 44 500470Z CORD 1 (CORD ARMOR D8.8) FOR TPE
STANDARD ACCESSORIES
DESCRIPTION REMARKS
501 337684 CASE 1
502 337685 TOOL BOX 1
503 336471 CASE ASS'Y (STACKABLE) 1 INCLUD.504-506
504 336472 LATCH 4
505 336473 HANDLE 1
506 336474 HINGE 2
507 337937 INNER TRAY 1
* 508 337922 DUST COLLECTION ADAPTER SET 1 FOR NOR,SWE,DEN,FIN
* 509 335868 MULTI TOOL BLADE (MW85S) 1
* 509 335880 MULTI TOOL BLADE (MD85SB) 1 FOR AUS,NZL
510 335881 MULTI TOOL BLADE (MD28PB) 1
511 335903 MULTI TOOL PAD (MU93D) 1
512 338252 SANDING PAPERS 94 X 94 AA60 (10 PCS.) 1
* 512 338253 SANDING PAPERS 94 X 94 AA80 (10 PCS.) 1 EXCEPT FOR AUS,NZL
* 512 338254 SANDING PAPERS 94 X 94 AA100 (10 PCS.) 1 EXCEPT FOR AUS,NZL
* 512 338255 SANDING PAPERS 94 X 94 AA120 (10 PCS.) 1
* 512 338255 SANDING PAPERS 94 X 94 AA120 (10 PCS.) 3 FOR AUS,NZL
* 512 338257 SANDING PAPERS 94 X 94 AA180 (10 PCS.) 1 EXCEPT FOR AUS,NZL,NOR,SWE,DEN,FIN
* 512 338258 SANDING PAPERS 94 X 94 AA240 (10 PCS.) 3 FOR AUS,NZL
* 512 338258 SANDING PAPERS 94 X 94 AA240 (10 PCS.) 1 FOR NOR,SWE,DEN,FIN
12 - 14 - 3 -*ALTERNATIVE PARTS
NO.
USED
CODE NO.
ITEM
NO.
NO.
USED
CODE NO.
ITEM
NO.

OPTIONAL ACCESSORIES CV 350V
DESCRIPTION REMARKS
601 337922 DUST COLLECTION ADAPTER SET 1
602 335868 MULTI TOOL BLADE (MW85S) 1
603 335873 MULTI TOOL BLADE (MW10P) 1
604 335872 MULTI TOOL BLADE (MW20P) 1
605 335871 MULTI TOOL BLADE (MW32P) 1
606 335870 MULTI TOOL BLADE (MW32PB) 1
607 335875 MULTI TOOL BLADE (MW32PC) 1
608 335876 MULTI TOOL BLADE (MW32PBC) 1
609 335878 MULTI TOOL BLADE (MW65PB) 1
610 335880 MULTI TOOL BLADE (MD85SB) 1
611 335879 MULTI TOOL BLADE (MD100SB) 1
612 335881 MULTI TOOL BLADE (MD28PB) 1
613 335882 MULTI TOOL BLADE (MD32PBC) 1
614 335869 MULTI TOOL BLADE (MD65PB) 1
615 335885 MULTI TOOL BLADE (MM10PB) 1
616 335884 MULTI TOOL BLADE (MM20PB) 1
617 335883 MULTI TOOL BLADE (MM32PB) 1
618 335887 MULTI TOOL BLADE (MI20P) 1
619 335886 MULTI TOOL BLADE (MI32P) 1
620 335889 MULTI TOOL BLADE (MU65SBF) 1
621 335888 MULTI TOOL BLADE (MU85SBF) 1
622 335896 MULTI TOOL BLADE (MU100SKS) 1
623 335898 MULTI TOOL BLADE (MU100SK) 1
624 335893 MULTI TOOL BLADE (MU65CF) 1
625 335892 MULTI TOOL BLADE (MU85CF) 1
626 335901 MULTI TOOL BLADE (MU52PKR) 1
627 335902 MULTI TOOL BLADE (MU52PK) 1
628 335900 MULTI TOOL BLADE (MU28PK) 1
629 335897 MULTI TOOL BLADE (MA85SH) 1
630 335899 MULTI TOOL BLADE (MA85SHT) 1
631 335877 MULTI TOOL BLADE (MU28PKS) 1
632 335904 MULTI TOOL BLADE (MA70DHX) 1
633 335905 MULTI TOOL BLADE (MA78DH) 1
634 335890 MULTI TOOL BLADE (MA65SH) 1
635 335891 MULTI TOOL BLADE (MA85SD) 1
636 335895 MULTI TOOL BLADE (MA20PH) 1
637 335894 MULTI TOOL BLADE (MA32PH) 1
638 323968 SANDING PAPERS 96 X 96 AA60 (10 PCS.) 1
639 323969 SANDING PAPERS 96 X 96 AA100 (10 PCS.) 1
640 323970 SANDING PAPERS 96 X 96 AA150 (10 PCS.) 1
641 338251 SANDING PAPERS 94 X 94 AA40 (10 PCS.) 1
* 642 338253 SANDING PAPERS 94 X 94 AA80 (10 PCS.) 1 FOR AUS,NZL
* 643 338254 SANDING PAPERS 94 X 94 AA100 (10 PCS.) 1 FOR AUS,NZL
644 338256 SANDING PAPERS 94 X 94 AA150 (10 PCS.) 1
* 645 338257 SANDING PAPERS 94 X 94 AA180 (10 PCS.) 1 FOR AUS,NZL,NOR,SWE,DEN,FIN
* 646 338258 SANDING PAPERS 94 X 94 AA240 (10 PCS.) 1 EXCEPT FOR AUS,NZL,NOR,SWE,DEN,FIN
- 4 - Printed in Japan 12 - 14
(141210N)
*ALTERNATIVE PARTS
NO.
USED
CODE NO.
ITEM
NO.