Hitachi FDV 16VB Manuale utente

MODELS

FDV

16T/

FDV

−1 −

1. PRECAUTINS IN DISASSEMBLY AND REASSEMBLY

The [Bold] numbers in the descriptions below correspond to the item numbers in the parts exploded

diagram of the FDV 16VB and the numbers in <Bold> to those in the parts exploded diagram of the

FDV 16T and the numbers in (Bold) to those in the parts exploded diagram of the FDV 16.

1-1. Disassembly

1-1-1. Removal of the Drill Chuck

(1) For keyless chuck (FDV 16VB only)

The Drill chuck [3] (keyless chuck) is fixed to the Spindle [4] with a UNF 1/2"-20 right-hand thread and

the Flat Hd. Screw (A) (Left hand) M6 x 25 [1]. First, open the jaws of the keyless chuck fully. Insert a

14 mm wrench into the wrench mounting portion of the Spindle [4] and turn the Flat Hd. Screw (A)

clockwise to remove it. Then, fit the hexagonal bar wrench for M10 into the keyless chuck and turn it

counterclockwise to loosen and remove the keyless chuck.

(2) For conventional chuck (with chuck wrench) (FDV 16VB, FDV 16T, FDV 16)

The Drill Chuck [3] <2> (2) is fixed to the Spindle [4] <3> (3) with a UNF 3/8"-24 right-hand thread and Flat

HD. Screw (A) (Left hand) [1] (For FDV 16VB only). As shown in the figure below, fit a J-78 ring ass’y

(special repair tools, Code No.970817 and 970818 are recommended.) onto the Drill Chuck body, and

secure it in a vise. At this time, ensure that the pin of the ring ass’y is properly inserted into the chuck

wrench mounting hole of the chuck. Open the jaws of the Drill Chuck [3] fully and turn the Flat Hd.

Screw (A) [1] clockwise with a flat-blade screwdriver to remove it (For FDV 16VB only). Then, fit a

14 mm wrench to the flat surfaces on the Spindle, and rotate it counterclockwise to loosen and remove

the Drill Chuck.

Hexagonal bar wrench for M10

Drill Chuck [3] Vise

14 mm wrench

Main body

Wrench mounting portion of Spindle [4]

Wrench mounting

portion of Spindle

[4] <3> (3)

14 mm wrench

Drill Chuck [3] <2> (2)

J-78 ring ass’y

Vise

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−2 −

1-1-2. Removal of Housing (B) of the Housing (A), (B) Set [18] <17> (17)

(1) Cut the Label [29] with a cutter along the groove between the assembled Housing (A) and (B) Sets [18]

(For FDV 16VB only).

(2) Remove the seven D4 x 20 Tapping Screws (W/Flange) [20] <19> (19) and take off Housing (B) of the

Housing (A), (B) Set [18] <17> (17).

1-1-3. Disassembly of the Armature and Stator

(1) Remove the two Brush Holders [22] <21> (21) by lifting them upward from Housing (A) of the Housing

(A), (B) Set [18] <17> (17), and take out the two Carbon Brushes [20] <20> (20).

(2) With the Change Plate [11] <10> (10), the Change Knob [10] <9> (9) and the Spring (A) [12] <11> (11)

installed, remove the Holder [13] <12> (12), the Armature [15] <14> (14), the Stator [16] <15> (15) and the

Gear [8] <7> (7) all together.

(3) Remove the Spindle [4] <3> (3) and the Gear [8] <7> (7) together from the Holder [13] <12> (12). Be

careful not to lose the Steel Ball D4.76 [9] <8> (8).

(4) By pulling out the Armature [15] <14> (14) from the Holder [13] <12> (12), the Ball Bearing [14] <13> (13)

can be removed together with the Armature. Remove the Ball Bearing from the Armature with the

bearing remover.

(5) Remove the Internal Wires [24] [26] [35] [36], <22> <23> <31> <32>, (22) (23) (31) (32) and the Choke Coils

[23] [27] from the Stator [16] <15> (15).

1-1-4. Disassembly of the Holder, Gear and Spindle

(1) Remove the Change Plate [11] <10> (10), the Change Knob [10] <9> (9) and the Spring (A) [12] <11>

(11) from the Holder [13] <12> (12).

(2) By pushing the Spindle [4] <3> (3) toward the chuck while holding the chuck side surface of the Gear

[8] <7> (7), the Gear can be removed. By removing the D12 Retaining Ring [7] <6> (6) from the Spindle

[4] <3> (3), the Spring [5] <4> (4) and Ball Bearing [6] <5> (5) can be removed.

Label [29]

(FDV 16B only)

Groove

Housing (B)

Housing (A)

Housing (A), (B) Set [18] <17> (17) Cut with a cutter

(FDV 16VB only)

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−3 −

1-1-5. Disconnecting Internal Wires and Electrical Parts

(1) Disconnect the internal wires from the switch as follows.

Insert the J-86 pin into the hole for the internal wire of the Switch [25] <24> (24). Press the leaf spring so

that the internal wire can be disconnected, then disconnect the Internal Wires [23] [24] [26] [27] [35] [36],

<31> <32>, (31) (32) and the Internal Wires of the Choke Coil [23] [27] and the Noise Suppressor

[37] <33> (33). (For the internal wire of the Cord [34] <30> (30), loosen and remove the terminal screw of

the Switch [25] <24> (24) with a slotted screwdriver.) If the leaf spring is pressed too much, the leaf

spring may be set permanently and the contact pressure with the internal wire will be reduced. Replace

such switch whose leaf spring has clearance of 0.5 mm or more with new one.

(2) After removing the two Tapping Screws (W/Flange) D4 x 16 [33] <29> (29), the Cord [34] <30> (30) and

the Cord Clip [32] <28> (28) can be removed from the Housing (A) of the Housing (A), (B) Set

[18] <17> (17).

1-2. Reassembly

Reassembly can be accomplished by following the disassembly procedures in reverse. However, special

attention should be given to the following items.

1-2-1. Reassembly of the Armature and the Stator

(1) Press fit Ball Bearing 608VVMC2EPS2L [14] <13> (13) and Ball Bearing 626VVMC2ERPS2S

[17] <16> (16) onto the Armature [15] <14> (14). Stop pressing when Ball Bearing 608VVMC2EPS2L

[14] <13> (13) comes in contact with the Fan. With a vernier caliper or similar tool, check that the press-

fit dimension is 123.8 mm as shown in the following figure. As excessive press fitting can cause

deformation or other damage to the Fan, particular attention is required. Also, if press fitting is

insufficient, it will cause loss of thrust of the Armature [15] <14> (14), resulting in heat generation.

Accordingly, press-fit Ball Bearing 626VVMC2ERPS2S [17] <16> (16) until it butts against the stepped

portion of the shaft.

-0.3

Leaf spring

Insert Internal wire 0.5 max.

Pull out

J-86 pin

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−4 −

1-2-2. Reassembly of the Holder

(1) When installing the Change Plate [11] <10> (10) and Spring (A) [12] <11> (11) to the Holder [13] <12> (12),

be careful of the direction of each part.

(2) Insert the Armature [15] <14> (14) and the gear spindle ass’y into the Holder [13] <12> (12), and insert

them into the Stator [16] <15> (15). Be sure to reassemble the Steel Ball D4. 76 [9] <8> (8) at this time.

Apply ATTOLUB MS No.2 to the ball chamber of the Spindle [4] <3> (3) and then reassemble the Steel

Ball D4.76.

(3) Install the reassembly from the above step (2) in the Housing (A) of the Housing (A), (B) Set

[18] <17> (17). Check that the fan of the Armature [15] <14> (14) can be turned freely by finger.

1-2-2. Other

When re-mounting Housing (A) of the Housing (A), (B) Set [18] <17> (17), be very careful to ensure that the

lead wires are not excessively slack, and that they are not pinched between components during

reassembly.

Ball Bearing

608VVMC2EPS2L

[14] <13> (13)

Fan Armature

[15] <14> (14) Stepped portion of shaft

Ball Bearing

626VVMC2ERPS2LS [17] <16> (16)

123.8-0.3

Change Plate [11] <10> (10)

Spring (A)

[12] <11> (11)

Ratchet

Holder [13] <12> (12)

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−5 −

1-3. Lubrication

(1) Apply ATTOLUB MS No.2 (Code No.309922) to the following.

Holder [13] <12> (12): Ratchet......................................................1 g

Gear [8] <7> (7): Teeth.........................................................2 g

Ratchet......................................................0.5 g

Spindle [4] <3> (3): Needle bearing contacting portion ...........1 g

Ball chamber.............................................0.5 g

Armature [15] <14> (14): Pinion........................................................ 1 g

1-4. Tightening Torque

Drill Chuck [3] <2> (2)..........................................................................29.4 - 39.2 N·m (300 - 400 kgf-cm)

Tapping Screw (W/Flange) D4 x 20 (Black) [20] <19> (19)

Tapping Screw (W/Flange) D4 x 16 [33] <29> (29)

1-5. Wiring Diagrams and Lead Wire Arrangements

Conduct wiring in accordance with the diagrams and arrangements illustrated below. However, be particularly

careful not to confuse the different arrangements for Models FDV 16VB, FDV 16T and FDV 16.

........2.0 ± 0.5 N·m (20 ± 5 kgf-cm)

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−6 −

1-5-1. Model FDV 16VB Wiring and Schematic Diagrams

The symbols 1, 2, 3 and ↑in the diagrams correspond to switch terminal figures.

(1) For Models with Noise Suppressor and Choke Coils

Internal Wire [35]

(Grey) Noise Suppressor [37]

Cord [34]

(Blue or White)

Internal Wire [36]

(Red)

Internal Wire [35]

(Grey)

Cord [34]

(Brown or Black)

Noise Suppressor [37]

Internal Wire [26]

(Black)

Stator lead wire mounting positions

Internal Wire [24]

(White)

(Viewed from commutator side)

Internal Wire [36]

(Red)

Choke Coil [27] (Blue)

Internal Wire [26]

(Black)

Choke Coil [23] (Brown) Internal Wire [24]

(White)

Switch lead wire mounting positions

Choke Coil [27] (Blue)

Internal Wire [36]

(Red)

Choke

Coil [23]

(Brown)

Stator [16]

Internal

Wire [24]

(White)

Internal

Wire [26]

(Black)

Switch (2P pillar type)

W/Lock [25]

Internal

Wire [35]

(Grey)

Noise Suppressor [37]

Cord [34]

Schematic diagram

Noise

Suppressor

(Black) (Grey)

(Brown)

Armature

(Blue)

(White) (Red)

Switch (2P pillar type)

W/Lock

Wiring diagram

Cord

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−7 −

(2) For Models with a Noise Suppressor and without Choke Coils

Internal Wire [35]

(Grey) Noise Suppressor [37]

Cord [34]

(Blue or White)

Internal Wire [36]

(Red)

Internal Wire [35]

(Grey)

Cord [34]

(Brown or Black)

Noise Suppressor [37]

Internal Wire [26]

(Black)

Stator lead wire mounting positions

Internal Wire [24]

(White)

(Viewed from commutator side)

Internal Wire [36]

(Red)

Choke Coil [27] (Blue)

Internal Wire [26]

(Black)

Internal Wire [23]

(Brown) Internal Wire [24]

(White)

Switch lead wire mounting positions Internal Wire [23]

(Brown)

Internal Wire [27]

(Blue)

Internal Wire [36]

(Red)

Stator [16]

Internal

Wire [24]

(White)

Internal

Wire [26]

(Black)

Switch (2P pillar type)

W/Lock [25]

Internal

Wire [35]

(Grey)

Noise Suppressor [37]

Cord [34]

Schematic diagram

Noise

Suppressor

(Black) (Grey)

(Brown)

Armature

(Blue)

(White) (Red)

Switch (2P pillar type)

W/Lock

Wiring diagram

Stator coil

Cord

All manuals and user guides at all-guides.com

−8 −

(2) For Models without Noise Suppressor and Choke Coils

Internal Wire [35]

(Grey)

Cord [34]

(Blue or White) Internal Wire [36]

(Red)

Cord [34]

(Brown or Black)

Internal Wire [26]

(Black) Internal Wire [36]

(Red)

Internal Wire [35]

(Grey)

Internal Wire [24]

(White)

Stator lead wire mounting positions

(Viewed from commutator side)

Internal Wire [26]

(Black)

Internal Wire [27]

(Blue)

Internal Wire [23]

(Brown)

Stator coil

Internal

Wire [24]

(White)

Switch lead wire mounting positions

(Black)

Internal Wire [36]

(Red)

(Grey)

Internal Wire [27] (Blue)

(Brown)

Excludes

the U.S.A.

Armature

Cord

Stator [16]

(Blue)

(White)

Internal

Wire [26]

(Black)

(Red)

Internal Wire [23]

(Brown)

Stator coil

Switch (2P pillar type)

W/Lock [25]

Internal

Wire [35]

(Grey)

Switch (2P pillar type)

W/Lock

Cord [34]

Wiring diagram

Schematic diagram

Internal Wire [23]

(Brown) Internal Wire [24]

(White)

For the U.S.A.

Internal Wire [27]

(Blue)

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−9 −

1-5-2. Model FDV 16T Wiring and Schematic Diagrams

The symbols 1, 2, 3 and ↑in the diagrams correspond to switch terminal figures.

(1) For Models with a Noise Suppressor

Internal Wire <32>

(Grey)

Internal Wire <23>

(White)

Stator lead wire mounting positions

(Viewed from commutator side)

Internal Wire <32>

(Grey)

Cord <30>

(Blue or White)

Internal Wire <31>

(Red)

Noise Suppressor

<33>

Switch lead wire mounting positions

Cord <30>

(Brown or Black) Internal Wire <22>

(Black)

Internal Wire <22>

(Black)

Internal Wire <31>

(Red)

Internal Wire <32>

(Red)

Internal Wire <23>

(White)

Switch (2P pillar type)

W/Lock

Noise Suppressor <33>

Cord <30>

Schematic diagram

Switch (2P pillar type)

W/Lock <24>

Noise

Suppressor

(Red)

(White)

Armature

Cord

(Black) (Grey)

Wiring diagram

Internal Wire <31>

(Red)

Noise Suppressor

<33>

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−10 −

(2) For Models without Noise Suppressor

Internal Wire <32>

(Grey)

Internal Wire <23>

(White)

Stator lead wire mounting positions

(Viewed from commutator side)

Internal Wire <32>

(Grey)

Cord <30>

(Blue or White)

Internal Wire <31>

(Red)

Switch lead wire mounting positions

Cord <30>

(Brown or Black) Internal Wire <22>

(Black)

Internal Wire <22>

(Black)

Internal Wire <31>

(Red)

Internal Wire <32>

(Red)

Internal Wire <23>

(White)

Switch (2P pillar type)

W/Lock

Cord <30>

Schematic diagram

Switch (2P pillar type)

W/Lock <24>

(Red)

(White)

Armature

Cord

(Black)

(Grey)

Wiring diagram

Internal Wire <31>

(Red)

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