Brother DB2-B790 Manual

Notes for using this parts book

1.If the symbol ._______,JI is found in the "Parts No." column or the "Assembly No." column, refer to the different parts list on page 16.

2.The symbol ~~in the "Parts No." column indicates that the part is not available for supply. If, however, there is a number in the "Assembly No." column, the part can be ordered as an assembly. Please, therefore, order by using the Assembly No..

3.This book was prepared based on information available in July, 1978.

4.Parts are subject to changes in design without prior notice.

Anmerkungen zum Gebrauch dieses Sti.icklistebuches

1.Dieses Zeichenl...._____,I in der Spalte "Parts No. (Teilnummer)" oder "Assembly No. (Geratesatznummer)" verweist auf die Gesonderte Stiickliste auf Seite 16.

2.Dieses Zeichen [~I in der Spalte "Teilnummer" bedeutet, daB dieser Teil

nicht lieferbar ist. Wenn jedoch in der Spalte "Geratesatznummer" eine Nummer steht, kann dieser Teil als ein Geriiteteilsatz bestellt werden. Bestellen Sie daher bitte mit dieser Geriitesatznummer.

3.Dieses Buch basiert auf den Informationen vom Juli, 1978.

4.Modellanderungen sind vorbehalten.

From the library of: Superior Sewing Machine & Supply LLC

n n

n

n n

r-1

I I

n n n

r-1

I !

n n n

n

n n

n

n·I .

n

Notes sur l'utilisationde ce manuel de pieces detachees

1.Si le symbole l.____...Jl se trouve dans Ia colonne "Parts No. (No de pi~ce)" ou dans Ia colonne "Assembly No. (No jeu de pees)", veuillez vous r~f~rer a Ia liste de pi~ces annexe page 16.

2.· Le symbole I~! dans la colonne "No de pi~ce" signifie que Ia pi~ce ne peut etre fournie. Si, dans Ia colonne "No jeu de pees", i1 y a un num~ro de nomenclature, Ia pi~ce peut etre command~e comme faisant partie d'un jeu de pi~ces.

Done, pour toute commande, veuillez sp~cifier le no du jeu de pi~ces.

3.Ce manuel a ~t~ fait d'apr~s les renseignements valables au mois de Juillet, 1978.

4.Les pi~ces peuvent etre sujettes a des modifications sans pr~avis.

Notas para usar este Libro de Piezas

1. De haber un	simbolo I	l junto al "Parts No.	(Namero de Pieza)"	o en Ia
columna del	"Assembly	No. (Namero de Juego)",	habr~ que mirar Ia	lista de

piezas separada de Ia p~gina 16

2.El sfmbolo 1~1, que se encuentra en Ia columna del "Namero de Pieza", quiere decir que no se dispone de dicha pieza sola. Cuando, empero, hay un namero en Ia columna del "Numero de Juego", se podr~ ordenar Ia pieza con todo el juego. Por lo tanto, ser~ mejor hacer el pedido recurriendo al namero del juego respectivo.

3.Este libra ha sido compilado bas~ndose en los datos de que se disponfa en Julio de 1978.

4.Las piezas quedan sujetas a cambios de diseno sin aviso previa.

From the library of: Superior Sewing Machine & Supply LLC

ONTENTS

A. Machine Body and Threading. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		1
B. Upper Shaft, Thread Take-up	nd Rotary Hook Mechanism .................	2
C . Needle Feed Mechanism. . . . . .	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	3
D. Presser Foot and Knee Lifter	echanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	4
E. Feed Mechanism (Part 1) .................................................		5
E. Feed Mechanism (Part 2) . . . . .	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	6
F . Lubrication (Part 1) . . . . . . . . . .	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	7
F . Lubrication (Part 2) . . . . . . . . . .	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	8
G. Thread Trimmer and Tension	eleaser (-100, ·200, -300, -400, -500, ·600) ........	9
H. Synchronizer (-100, -200, -300, -4	, -500, -600) .................................	10
J . Thread Wiper Mechanism (-200 -400, -500) ..................................		11
K . Quick Back Mechanism (-300, - 00, -500, -600) ................................		12
L . Presser Lifter and Treadle (-5	, -600).......................................	13
M. Control Box (-500, -600) ....................................................		14
Z . Accessories ...............................................................		15
DIFFERENT PARTS LIST ...................................................		16
a . Exclusive Parts ...........................................................		31
INDEX.......................................................................		32

From the library of: Superior Sewing Machine & Supply LLC

C. Needle Feed Mechanism

I

b

		fJ=:u		t
		Q
					I
~		I
21	20	19

Ref.

I;

Name of Parts

1

----

I Assembly No.

Ref.

Name of Parts

!Q'ty

I

013761·4·10

I

Assembly No.

No.

!Q'ty

Parts No.

No.

i

Parts No.

C·

1·

1 : Needle Bar Driving Arm

I

1

C·l

C·14

t

Screw

I

1

009711·2·12

_C· 1· 2, Pin

!

1

I

Needle Feed

I Needle Feed Regulator

;

Shaft Assembly

C-15

:

1

118712·0-01

l.:· 1· 3 · Needle Feed Shaft

;

1

118693·0·01

I Connecting Link

C·

2

·Screw

I

1

100058·0·03

C-16

Pin

2

118713-0.01

C· 3

· Needle Feed Shaft Bushing

1

118696·0·00

C-17

I Screw

I

1

013679-4-12

.

C·

4

:Set Collar

146581·0.01

C-18

I Screw

1

C·

5

Screw

2

---

C·19

i

Bushing Right

1

118708·0·01 I

100260·0.01

I

c. 6

Screw

I

1

009711·2·12

C-20

:Screw

2

I 100260·0·01 I

C·

1·

1

Needle Feed Arm

1

C-7

C-21

1 Set Collar

1

I 146581-0-01 !

C· 1·

2' Shaft

I

2

110562·0 01

Needle Feed

C-22

I Needle DB x 1

1

I

C· 1·

3 · Screw

3

110563·0·01

Connecting

C·23

I Needle Bar Thread Guide

1

I

C·

1·

4

1

Needle Feed Motzon Transnutter

1

118700·0·01

Rod Assembly

C-24

i

Screw

1

I

140553·0·01

118698-¥1

C· 1·

5! Needle Feed Connecting Rod

1

118699·0·01

C·25

! Needle Bar Bushing

1

118691·0·01

C· 8·

1

Needle Feed Eccentric Wheel

1

~

C-8

C-26-

1 i Collar

1

1104521.0.02

C-26

Needle Feed

Collar with

C· 8· 2 : Screw

2

I 101706·0-01

Eccentric

C-26·

2 i

Screw

2

014770·6·22

Screw

I

Wheel

145951·0·01

C·

9

' Bushing Left

l

1

I 118707·0·01

C-27· 11 Screw

:

1

118687-0.01

C-10

:Screw

1

013760-6·10

C·'Zl·

21 Needle Bar Clamp

1

I

118686-0·01

C-11·

1 : Screw

4

009681·0·12

C·'Zl·

3

Needle Bar

I

1

I

C-11·

2! Guide Plate

I

2

118705 0-01

C·'Zl·

41

Needle Bar Guide Slide Block

;

1

I 118698-0.01

C-11·

3 I Needle Feed Regulator Bracket 1

1

C·ll

C·21·

5

Needle Bar Guide Plate

I

1

118688-0.01

C·'Zl

Needle Feed

Needle Bar

C-11· 4 i

Feed Regulator Slide Block

:

2

110488---0·01

C-27· 6

Needle Bar Guide Plate B

I

1

142425·0·01

Regulator

Bracket

C-11·

5! Shaft

I

1

110562·0·01

Assembly

C·27·

7

Nut

2

021670·2·03

Assembly

C-11· 6! Screw

4

101706-0.01

C·'Zl·

8

Bolt

2

017671·8·12

I

118703-0.01

C-11· 71 Connector

I

1

118709·0.01

C·'Zl·

9

Needle Bar Bracket

1

C-11· 81 Needle Feed Regulator Shaft

1

1187()6..().01

C·'/:1·10

Screw

:

1

013761·4·10

C-12

I Spring

I

1

C-27·11

Needle Bar Guide Slide Block

;

1

118690 0 01

I Needle Feed Regulator

C·28

Clamp

1

118692·0·01

C-13

!

1

148285·0·01

---

I Shaft Arm

:

C·29

Screw

1

110711·0·01

- 3 -

From the library of: Superior Sewing Machine & Supply LLC

D. Presser Foot and Knee Lifter Meche

nism

II

19

l:::=-22

..._ .. --- .. -- · ·--...:®~-.:..23::..

-

J

'..J

20

21

.. -24

'•'

I

; -

15

l~V

I

7~------...; •

· ~tr

---------~~----------- ·• 25

6-2-e:=

'·

}

~,

~~

::~21

6-•

~

'.$,.?' .;;.

29

5

4-----;:r

i~~

-30

- _.r·

L

·· --

6__91,

r

~v-1

"'--...._.- -

g

li

"'........

-

3--~

I

, -

''-...)

•• -~·

• \. J

2=:t~

31-·~'~-~

I

-~ i

--

~31-•

('.

1'\.._·-......_

___;

31-. ~'

31;1

3H

31-3-/,- I

I

I

(]

i

~)"..a;

~31-5

I ~I

<:!5:L-=-31-a

I

32

I

....

~~:

Name of Parts

: Q't)'

Parts No.

Ass~mblr No.

~~:

Name of Parts

. Q"tr

Parts :-io.

As.o;embl)· l'u.

D·

1

Presser Foot Assembl)·

1

1

1

D-19

Screw

I

102921·0·02

D·

2

Screw

I

001670-8-14 1

D-20

, Spring

I

116752·0·01

- ------

---

· -

I-To' 3.----7;P~resse:-:-:-:-r:""B.,a-:-r:---------.;..1~:;.;11~1~466ii:-:·0;..-~01; ,....:-+---+-Fo~-2ii-i1:-~;7iK~n~ee~L-:-:if..-te=-r=---------· -·rl48449:0~-...... ...

- -

-

D- 4

Presser Bar Bushing

1

. 111467-0-01.

D-22-Nut

--

:!

· 110161-0:02~- -

-

f-fi"'-.-5-=---.s~·p-r_m_R__;_~...

;:....::;,:.;.;..:.:.::~-----=1- ;:1.,;,187~1-=-s.·o=,...:.o;.::l..,.:----f-----+-o.23....

Washer

--------- -~- 116748-0-or:-- ·--

I>-

6-l

Presser Bar Bracket

1

_ --..

• D-6

0·24

Knee Lifter ConnectirigROd___ ··--~-· 148450:-o.~-- --

--

- _ --

j

Pres ;er

Bar

D-25

Cover

1

I i72)f:if.01 ~

t .-- -

-_------------------

~~ Brae ket

0-26

Knee Lifter Lever Supporter·

1-ii67sf:-o.o~1- .. ------

0

62

Screw

1

'009671·0·12 i 1809 2-0-01

D·2i

Screw

:!

009680·7·12

D·

7

Presser Sprmg Washe-r-------

:-1-~14"'"'04~07=---o"".""o.,..J+-:--

+------

t·o:-ZR-·Pm--

-- --·-T-· 047601-K-=42-;-- ----

•

D-

8

Sprmg

1

· 141728-0-01 :

·o-29

1 Knee Lifter Lever

· -· --

~ ----

ii8723-0:of'--

--

--

---

().

9

Presser Foot Lifter

1

. 116743·0·01 .

D-30

• Knee Lifter Compl)•inR Bar

1

11679S·0·01

0-10

Screw

1

: 116744·0-01

D-31·1 . Bolt

1

------oin62:o713.,...

l

lJ. 11

Presser SprinR Bar

1

141208·0·01

D-31·2

Knee Lifter Joint

-- 1

· 146039·0·01

D-12

Nut

1

147846-0-01.

--·-f-o.3~nee Liherlfar___ -----

1-104619·0·02

D-13

Screw

1

141207·0·01 ·

D-31·4

:Bolt

·---··-

-----

-- -·- f- 100463·0·01

~;~Lifter

-D-14

· Presser Bar Liftmg Connector

1

118720-0-01;

D-31-5 1 Bolt

1

110087-0-0T

1 ""D'·1;;:5:----i;P:::-resse=-: r:""B~a::..r:--:rL~if,:..:te~r:;S~h:..:a7ft~:.:..::..:..... ......

~1-.;.;11;-;;6,;,::746-'o~.o'"1-.--t----t

D-3iT' RneeT.Ifter- Piite-Stopper

i

114967-0-01

As.o;embl)•

D-16

Stop Ring

i

1

I 048040-3-42 1

D-31·7

1 Knee Lifter Plate

1

. ll4966:o.o1

D-17

· Washer

1

1

!118719-0-01 I

D-31-8 1 Knee Lifter Cover

_

1

140503-0-01

D-18

. Screw

:

I

I 013760·8·12 •

0·32

1 Spring

2

1

-4 -

From the library of: Superior Sewing Machine & Supply LLC

E. Feed Mechanism (Part 1)

~	--	na=l
31·2...........	~12...
~		................................
33~---		'"
32---=-& 31-•		30 21
	t,
	I ',
	:	~25-J25-c
	I	8
	I

'

'

''.JI

~~:

f'ame of Pans

Q"t)'!

Parts No.

Assembly No.

~~:

Name of Pans

. Q'ty

Parts No.

Assembly No.

E·

....i · f - '\"' e - rt="'ic -- a - .I"F'"""eed -- : -.Ec:..--ce-n~t":'ri.-:-c•w

-hee-.l·--;-1

----:=-.,.1'E~--1-----+-·E""·1S--screY.:-·

- --- - -

· ·

1

• 009680-7-i~-- ·---

E·

Screw

2

I 013760-8·10 LEc:centric: Wheel

E·19

Reverse Lever Stopper--

=_-

~: 1

: 1iRs65:0·01_j__ __

t:·

ven1ca1 l'eed (.;onnec:ting Rod

1

118758·0·01 1

_

E·20

Pin

..

1

118713·0·01 .

E:-3·· • Stopper- . ..

. --

1

f 101482-0-01t·

E·21

Screw

--- · --

'

2

'013689·4-12 \

·r.--4·1

Ec:centnc Wheel

f--~:_..:.:="--"=1iE=-.4------t

E-22

Feed Rock StiiftArm Pin . .

'

1

. 118740·0·011

..

E·

Screw

2

, 013760·~-t;>!Eccentric Wheelt--;:_EE:-:.:~::::4:--'"'7-"~-~:.:..;:_~-.F_...eed.....;,.C.;,.o;;.;..n;,;,n;,;,ec..;.;t_in-g-R-od--:-:-!-_...,o;;;l}"":S""7;n36"'9:::...~-=-::~"'"i":.;....

~~~~~::~~~~

E·

Crank Rod

1

_.----

1E-5

-E.2S:T~Iever R~lator connecting Rod

1"118730·0·0f-:-- ------

·

--------

· ---

jcrank Rod

··E-25·2 ·Stud

1

118737=0~

E·

. Screw

2

144712·0-01 i 118725·0·01

E-25·3

Lever Feed Link

1

118729·0-01

t. 6..

SCrew

I

013760·8·10 ·

E-25·4

·Screw

1

· 013689·4·12

E-25

[.-r- Stop R1ng ·-- -- ----

--~-~ il48o7o:J.42~.- - ··

-

E:25.5 r Feecfi'fegulator- ·-- ---- ---

·-r ·1--

~ ~ ~=,:b~~ulator

E· 8-1

Feed Controller Shaft

I ~ 118744·-~-~i E·8

E·25-6

· Stud Small

_ _

,

1

, 118732·0-01

118727·0·01

E· ·s.i- • N'l.li

.1

~-~052J.!:().~ Feed Controller

-F;-:-25:7

Pin

2

!

118733·0·01 1

't7"8.3-SC-re_w_··----------

~ 1

011681·2·12 iAssembly

-E;-:25-s'"Stop·R~---- ----

·:-1

I 048040-3-42!

E·

t•eed (.;ontroller

1

--

1118'/41·0·01

E·25-9 ·Stud Large

1

.......

,11""8""73"'1'""·0,...·,..01:-<-;------ f

· ~·

Sprang

1

1

1

E·26

· Feed Regulator Shaft

_.J_~ . ~1~8;;;7~34~,.·.,.0-_0,...1,...1------

I

E·IO

Connecting Plate

1

118746..-..,.o•o,. .l..:.I_____-+.,E~·.,.,27..--.S

...:c-re;.,."-'

,--.;;,2-·.....o,,l3;;;;7""60~·~8·..,;,10.;......

'------ 1

E·ll

: Screw

2

1

112072-0·01

E·28

, Washer

2

118735-0·01 1

-

E·l2·1

l'eed (.;ontroller Lever Shaft

1

118751·0·01

E· 12

_t-:·29

1 Washer

I

!

025100·1·30 i

E·l2·2

: Set Screw

I

015771·0·12

Reverse Lever

E·30

. Collar

I

1

1

118748·0·01 :

E·12·3

Reverse Lever

1

1104564-0-01

E·3l·l 1Collar

1

'

~

E·31

E·12·4

0 Ring

1

:~

Collar with

t- ,E··I~5"""1"".:s ,IP;; r_m :R,;._________._!_1~1""'1""00""3'""28~·0<""·0""'1,...t_____--i....... ... ... ...

E·31·2 I Screw

2

I 013760 8 10 'Screw

E·16

1 Pin

;

1

100327·0·01 1

i

· ·

1 118824·0·01

E·17·1

Length Control Screw

1

I

109151·0·01

E-32

Bolt

1

I 108749-0·01

E·17·2

Packing

1

I

108549-0..01 E-17

E-33

Feed Regulator Bracket

I

1118747:o:="ol=-+--·-----

•

... ...........,.E"·I;;;7"·3

-I-rLen_;_gt.;.,.h~Con~tr-o.,..I------+-II:---I-:1:-::4""24"'"'82~-0'"'·0"'I:-l

Length Control

.."'E'"·34.:-:---t- Sc..;.;r.:.::ew

I

! 013689-4-

12

t-'P'"1E··l;;;7r:-4...

-t-""Fieed--:-'ii-K;;-legu-:---rla-.t~o-r"P;:-Ia-:t,...e----+-,1.--il-:1:-::46~183~.o~.o"'I:-l

Assembly

hE:o:-35::::-:--+-.:F:-eed--;-"R:-o-.ck;-;::S,.-h-af~t-A:-rm----•P;"'in--+-rl-t-;-:;!109=153~-0.........

,01:+------f

-- --I-'E'1E··l;-.;7-;;·Smw.~ash~e~r;,::,;;.;,;;;,;,;;,;,...;;,..;,;:;,;;.:;____i ill;

t-717.427~46-~0.-.:.02i.-1181482·0-01

1

1

t;-17-6

Screw

:

I

142747·0·02,

- 5 -

From the library of: Superior Sewing Machine & Supply LLC

E. Feed Mechanism (Part 2)

II

I

LJ

Name of Parts

1Q'ty I Parts No

Name of Parts

Assembly No.

1 Screw

:Feed Bar Shaft

1

1 116917·0·01 ,

:Feed Bar

1

181523-0·01

Feed Shaft Bushing Small

:Ring

I 1

115663·0·01

Screw

'--'----+

:Screw

2

100080·0·03

E·54·1

!Collar

E-54·2 !Screw

. Feed Shaft Bushing Left

Feed Rock Shaft Arm

! Screw

-i

~

- 6 -

From the library of: Superior Sewing Machine & Supply LLC

F. Lubrication (Part 2)

69

Ref.					Name of Pans				Q'ty: Pans No. Asse bly No.
No.
F·33	Packing								I	118770·().01 i
F·l4	:Oil Adjusting Screw								I140412·0·01 I
									I	116799·0·01
									I	140357·0.01
									1	140438·0·01
						ork

! 009670·5-12

118788-0.01

108802·0.01

013680·8·12

146329·0·00

1 146326-0-01

2 118996-0-00

~

:I

I

(

\

\

I

~..)5-1

-·~

Name of Parts

~

!!

: i

u p

~

';$1

		,.
		-J
		._
	-·
		....
		...

Assembly No.

F-65

Pump

Assembly

181476·1·01

F-69

Oil Pan

Assembly

- 8 -

From the library of: Superior Sewing Machine & Supply LLC