TMI Products VD8 Series Quick start guide

ANALOGUE QUARTZ
TECHNICAL GUIDE
&
PARTS CATALOGUE
Cal.VD8 Series
(Cal.VD84A/85A/86A/87A)
31032022

Version-01
Cal.VD8 Series
（VD84A/85A/86A/87A）
*Refer to page 2 for other Cal. No. specifications.
φ23.70 mm
22.60 mm ：between 12 o'clock and 6 o'clock sides
22.60 mm ：between 3 o'clock and 9 o'clock sides
φ23.30 mm
22.10 mm ：between 12 o'clock and 6 o'clock sides
21.40 mm ：between 3 o'clock and 9 o'clock sides
Electronic circuit reset switch
Second setting device
Date setting
SR626SW (Silver oxide battery)
Battery life is approximately 3 years
Use 10 second gate
* Set the winding stem with crown at the normal position
VD87A
5
O
VD86A
5
O
O
×
VD85A
5
O
O
×
2 Hands 
(hour, minute)
VD84A
6
O
Accuracy
Battery
Measuring gate by quartz tester
Jewels
Less than ± 20 seconds : Monthly rate at normal temperature range
0 Jewel
Day Calendar
hand (10 H) Retrograde
×
×
O
×
×
O
O
Day Calendar
hand (9 H) Retrograde
O
O
×
O
1
SPECIFICATION
Cal. No.
Item
Outside diameter
Casing diameter
Cal. No.
Small Second
hand （6 H）
VD84A
Movement
Movement
size
Total height
3.45 mm
Time
indication
Driving system
×
Additional mechanism
Antimagnetic
Step motor
≧1600 A/m
Hands
24 Hour hand
(12 H)
O
O
O
×
Date Calendar
hand （3 H）
O
O
×
×
Date Calendar
hand （2 H）

Version-01
Cal.VD8 Series
（VD84A/85A/86A/87A）
2
MOVEMENT VARIATION
VD84A
VD85A
VD86A
VD87A
Day
(Retrograde) Date
Small second
Day
(Retrograde)
Date
Small second
Small second
Date
24hours
Day
(Retrograde) Day
(Retrograde) Date
Small second

Version-02
Cal.VD8 Series
（VD84A/85A/86A/87A）
Lubricating : Types of oil
Disassembling procedures Figs.
① → ㊼
A3a / Moebius 9010
A2a / Moebius 9030
Reassembling procedures Figs. ㊼
→ ①
Oil quantity
Normal quantity
Hour and minute hands
Small second, Date-Day calendar
24 Hour hands
Dial
0012 079
Support for dial side parts screw
0802 469
Day driving wheel 0604 171
Support for dial side parts
0802 469
Date driving wheel 0491 014
Dial washer
0873 169
Day jumper 0157 169
Small hour hand wheel
0505 169 0737 169
Day transmission wheel Date corrector wheel
0970 169
0125 269 Date star
Day wheel bridge 0012 079
1019 170
Day wheel
0585 169 0836 171
Hammer (A)
0585 170
Hammer (B) 0962 033
0125 369
Small second wheel bridge 0962 033
0240 169
Small second wheel
0273 169 0737 891
Hour wheel
㉕
⑭
⑧
⑨
㉑
PARTS CATALOGUE
㉓
⑳
Intermediate wheel for
date corrector (D)
③
⑱
Intermediate wheel for
date corrector (B)
㉔
⑲
Intermediate wheel for
date corrector (C)
⑯
㉒
⑰
Intermediate wheel for date
corrector holder
3
<<VD84A>>
①
②
④
⑩
⑤
Intermediate wheel for date
corrector holder screw
⑪
⑥
⑫
⑦
⑬
⑮

Version-02
Cal.VD8 Series
（VD84A/85A/86A/87A）
Lubricating : Types of oil
Disassembling procedures Figs.
① → ㊼
A3a / Moebius 9010
A2a / Moebius 9030
Reassembling procedures Figs. ㊼
→ ①
Oil quantity
Normal quantity
Hour and minute hands
Small second, Date-Day
calendar hands
Dial
0012 079
Support for dial side parts screw
0802 469
Day driving wheel 0604 171
Support for dial side parts
0802 469
Date driving wheel
0873 169 0737 169
Day jumper Date corrector wheel
0505 169 0970 169
Day transmission wheel Date star
0125 269 0012 079
Day wheel bridge
1019 170
Day wheel 0836 171
0585 169
Hammer (A) 0962 033
0585 170
Hammer (B)
0125 369 0962 033
Small second wheel bridge
0240 169
Small second wheel 0737 891
0273 169
Hour wheel
4
Intermediate wheel for date
corrector holder
Intermediate wheel for date
corrector (B)
Intermediate wheel for date
corrector (C)
Intermediate wheel for date
corrector (D)
㉑
⑱
㉓
⑮
㉒
⑯
⑬
⑳
⑭
Intermediate wheel for date
corrector holder screw
⑰
PARTS CATALOGUE
<<VD85A>>
⑫
①
②
③
④
⑧
⑤
⑨
⑩
⑥
⑪
⑦
⑲

Version-02
Cal.VD8 Series
（VD84A/85A/86A/87A）
Lubricating : Types of oil
Disassembling procedures Figs.
① → ㊼
A3a / Moebius 9010
A2a / Moebius 9030
Reassembling procedures Figs. ㊼
→ ①
Oil quantity
Normal quantity
Hour and minute hands
Small second, Date-Day
calendar hands
Dial
0012 079
0802 469 Support for dial side parts screw
Day driving wheel 0604 172
0802 469 Support for dial side parts
Date driving wheel 0737 169
0873 169 Date corrector wheel
Day jumper 0970 169
0505 169 Date star
Day transmission wheel 0012 079
0125 269
Day wheel bridge
1019 170 0836 171
Day wheel
0585 169
Hammer (A) 0962 033
0585 170
Hammer (B) 0804 170
0125 369
Small second wheel bridge
0240 169 0737 891
Small second wheel
0273 169
Hour wheel
⑱
⑮
㉒
⑯
㉑
Intermediate wheel for date
corrector (D)
⑬
⑳
⑭
Intermediate wheel for date
corrector holder
⑰
⑫
⑲
⑥
Intermediate wheel for date
corrector (B)
Intermediate wheel for date
corrector (C)
⑤
PARTS CATALOGUE
5
<<VD86A>>
①
②
③
④
⑧
Intermediate wheel for date
corrector holder screw
㉓
⑨
⑩
⑪
⑦

Version-02
Cal.VD8 Series
（VD84A/85A/86A/87A）
Lubricating : Types of oil
Disassembling procedures Figs.
① → ㊼
A3a / Moebius 9010
A2a / Moebius 9030
Reassembling procedures Figs. ㊼
→ ①
Oil quantity
Normal quantity
Hour and minute hands
Small second, Date-Day
Dial calendar hands
0012 079
Support for dial side parts screw
0802 469
Day driving wheel 0604 172
Support for dial side parts
0802 469
Date driving wheel 0737 169
Date corrector wheel
0873 169
Day jumper 0970 169
Date star
0505 169
Day transmission wheel 0012 079
0125 269
Day wheel bridge 0836 171
1019 170
Day wheel
0585 169 0962 033
Hammer (A)
0585 170
Hammer (B) 0804 170
0125 369
Small second wheel bridge 0737 891
0240 169
Small second wheel
0273 169
Hour wheel
⑱
⑮
㉒
⑯
㉑
Intermediate wheel for date
corrector (D)
⑬
⑳
⑭
Intermediate wheel for date
corrector holder
⑰
⑦
⑫
⑲
Intermediate wheel for date
corrector (B)
Intermediate wheel for date
corrector (C)
⑤
PARTS CATALOGUE
6
<<VD87A>>
①
②
③
④
⑧
Intermediate wheel for date
corrector holder screw
㉓
⑨
⑩
⑥
⑪

Version-02
Cal.VD8 Series
（VD84A/85A/86A/87A）
Lubricating : Types of oil
Disassembling procedures Figs.
① → ㊼
A3a / Moebius 9010
A2a / Moebius 9030
Reassembling procedures Figs. ㊼
→ ①
Oil quantity
Normal quantity
Battery 0012 168
Battery connection (+) screw
4004 271
*Battery connection (+) Circuit block with coil block
0281 452 4455 169
Setting wheel Reset lever
0261 452 0144 003
4216 169 Minute wheel and pinion
Insulator 0231 058 4146 170
Step rotor
0221 069
4239 169
Stator
0391 169
4270 469
Battery connection (-) 0701 452 0383 891
Fifth wheel and pinion Setting lever
0125 469
Train wheel bridge 0384 452
Yoke
0282 452
Clutch wheel
*1 Oiling position
0351 177
Winding stem
0804 169
Intermediate wheel for date corrector (A)
*Refer to page 9 for each parts code
PARTS CATALOGUE
㉟
㊱
㊺
㊼
㊻
㊳
㉛
Train wheel setting lever
㊶
㊸
㊹
㊵
7
㉖
㉗
㉜
㉘
㉞
㉝
㉚
Center wheel and pinion
㊷
㉙
Fourth wheel and pinion
㊲
Third wheel and pinion
㊴
*1

Version-01
Cal.VD8 Series
（VD84A/85A/86A/87A）
Remarks:
O Different parts for each CAL.
* All parts code are subject to change without notice.
O
―
―
O
Parts name
Parts code
VD84A
VD85A
VD86A
VD87A
O
4271 494
―
―
PARTS CATALOGUE
8
O
―
―
―
4271 476
4271 477
4271 478
―
―
―
―
Battery connection (+)
―

Version-01
Cal.VD8 Series
（VD84A/85A/86A/87A）
・The explanation here is only for the particular point of Cal.VD84A/VD85A/VD86A/VD87A
REMARKS ON DISASSEMBLING AND REASSEMBLING
(1)HAND
・How to install hands
Place the movement directly on a flat metal plate or
the like to install the hands.
Note: How to procedure hands Day transmission wheel
①The state of movement is confirmed by the position of
a right picture.
Pull out the crown to the second click position and
rotation. The position is setting.
②Dial setting.
③Install the Day calendar hand at the first position.
④Install the Date calendar and small second hands at the
12 o'clock position.
⑤Pull out the crown to the second click position and
rotation it clockwise the change date.
⑥Install the 24 hour and hour and minute hands at the
12 o'clock position. first position
(2)Day calendar (Retrograde) hand
・Be quick in Day calendar hand
The hand instantaneously returns from B position
to A position when one week passes.
(3)Winding stem
・How to remove
While pushing the indented portion of the arrow pull out
the winding stem.
TECHNICAL GUIDE
9
Support for dial side parts
Direction of rotation
Push
B position
A position
Metal plate

Version-01
Cal.VD8 Series
（VD84A/85A/86A/87A）
(4)Battery
・How to install
Insert the battery aslant in the direction shown by the arrow.
Check the battery connection (+) securely touches the
side face of the battery.
(5)Insulator
Insulator
Notes：
To insulate between the battery connection (+)
and the battery connection (-), the insulator
Pin
should put at the three pin securely as bellow.
(6)Day jumper and support for dial side parts
・Reassembling procedures
The support for dial side parts spring set to the
day jumper. (A position) Day jumper
support for dial side parts spring
A position
TECHNICAL GUIDE
10

Version-01
Cal.VD8 Series
（VD84A/85A/86A/87A）
(7)Setting position (Notes at the time of disassembling and a reassembling)
・How to Date-Day driving wheels setting position
Note:
・The Date indicator finger of a Date driving wheels is setting position "○"mark of Main plate.
・The Day indicator finger of a Day driving wheels is setting position "△"mark of Main plate.
11
TECHNICAL GUIDE
≪Cal. VD84A・VD85A setting position≫
setting position
Date driving
wheel
Day driving
wheel
setting position
≪Cal. VD86A ･VD87A setting position≫
Enlargement Enlargement

Version-01
Cal.VD8 Series
（VD84A/85A/86A/87A）
Note:
*6 *1:
Hour hand
*1 *2 *1 *2
*2: Minute hand
*7 *7 *8
*3: Small second hand
*5 *8 *5 *9
*4: Date calendar hand
*5: Day calendar hand
*9 (Retrograde)
*3 *3
*6: 24 Hour hand
*4 *4
*7:
*8: First click
・Date setting
*9:
Second click
*2 *4 *2 *4
・Time setting
*7 *8 *5 *7 *8
*5 *9 *9
*3 *3
*1 *1
12
OPERATION
DISPLAY AND CROWN OPERATION
≪VD84A≫
≪VD85A≫
Crown at normal position
≪VD86A≫
≪VD87A≫
(Quick change function)

Version-01
Cal.VD8 Series
（VD84A/85A/86A/87A）
1.Pull out the crown to the 2.Push the crown back
3.Pull out the crown to
4.Push the crown back
second click when the in to the normal position the first click.
in to the normal position.
small second hand is at in signal. turn the crown counter-
the 12 O'clock position.
Pull out the crown to
clockwise to set the date.
the first click. (Quick change function)
Turn the crown rotation to
set the day of the week.
Turn the crown to set the
hour and minute hands
to the time.
(check that AM/PM is
set correctly)
*Do not set the date between 10:00 PM and 2:00 AM
Otherwise, the day may not change properly. If it is necessary to set the date during that time period,
First change the time to any time outside it, set the date and then reset the correct time.
OPERATION
13
TIME SETTING