1977 DATSUN PICK-UP transmission

Malnshaft

assembly

I

Assemble
2nd

gear
needle
bear

ing
2nd

gear
baulk

ring
1st
2nd

speed
synchronizer
assembly
st

gear

baulk

ring
I
st

gear
bush
needle
bear

ing
I

st

gear
steel
ball
and
thrust

washer
on
mainshaft
Before

installing

a

steel
ball

apply
grease
to

it
See

Figure
MT
36

TM358

Fig
MT

36

l
talling
thrust
washer

2

Set
Transmission
Press
Stand

KV311
00400
and

place
adapter
plate

assembly
on
it

See

Figure
MT
37

For

counterman
and
reverse
idler
shaft

For
main5haft
and
reverse

tdler
haft

V31100400

J
UJ

V
TM438

Holes
for
reverse
Idler

shaft

Fig
MT

37
Tromm
inion
PreS3
S
tond

3
Install
mainshaft

assembly
to

adapter
plate
assembly
Be
sure
to

place
bearing
squarely
against
shaft

and

press
it
into

place
on
shaft

gradu

ally
See

Figure
MT

38

KV31100400

TM439

Fig
MT
38

Installing

mai
haft

em

bly
Manual
Transmission

Countershaft

assembly

I
Place
new
woodruff

keys
in

grooves
in

countershaft
and

tap
them

lightly
until

they
are
seated

securely

Use
a

soft
hammer
to

avoid
dam

aging
keys

2

Place

adapter
plate
assembly
and

mainshaft

assembly
so
that

counter

shaft
rear

bearing
rests
on

Transmis

sion

Press
Stand
KV31100400

prop

erly

3
Install
countershaft

into

adapter

plate
by

pressing
it
See

Figure
MT
39

TM440

Fig
MT
39

l
talling
countersha
t

4
Position

3rd

gear
needle

bearing

fnaiiiSh
ifOfd

gear
baulk

ring
and
3rd

4th

synchronizer
assembly
on
the

front
of
mainshaft

S
Ins
iall
thrust
washer

on
mainshaft

and
e
ure
it
with

snap
ring
of

proper

thickness
that
will
fit
the

groove
in

mainshaft
See

Figure
MT
40

Available

snap
ring

No
Thickness
mm
in

I

2

3
1
4

0
055

1
5
0
059

1
6
0
063

TM441

Fig
MT
40

l
talling
snap
ring

MT
l0
Main
drive

gear
assembly

1

Using
Transmission
Adapter

ST23800000

press
main
drive

bearing

onto
the
shaft
of
main

drive

gear

Make
sure
that

snap
ring
groove
on

shaft
clears

bearing

2
Place
main
drive

bearing
spacer

on
main
drive

bearing
and

secure
main

drive

bearing
with
thicker
snap

ring

that
will
eliminate
end

play
See

Figure
MT
4l

Available

snap
ring

No
Thickness
mm
in

2

3

4

5

6
1
80
0
0709

1
87
0
0736

1

94
0
0764

2
01
0
0791

2
08
0
0819

2
15

0
0846

CD

I

TM364

Fig
MT
41
Installing
snap
ring

3

Position
baulk

ring
on
cone
sur

face
of
main

drive

gear

Apply
gear
oil

to

mainshaft

pilot

bearing
and
install
it

on
mainshaft

Assemble
main
drive

gear
assembly

on
the
front

end
of
mainshafl

4

Press
counter
drive

gear
onto

countershaft

with
Counter
Gear
Drift

ST23860000

by

meshing
gears
and

secure
counter
drive

gear
with
thicker

snap
ring
See

Figures
MT
42
and

MT
43

Note

Be

sure
to
drive
in
counter

drive

gear
and
main
drive

gear

simultaneously

ST23860000

TM442

Fig
MT
42

l
talling

counte
haft

drive

gear

Available
counter
drive

gear
map
ring

No
Thickness
mm
in

I

2

3
1

4
0
055

1

5
0
059

1
6
0
063

II

TM366

Fig
MT
43

Installing
nap
ring

5
Press
countershaft
front

bearing

onto
countershaft
with
Drift
C

ST22360002
See

Figure
MT
44

ST22360002

KV3
II

00400

TM443

Fig
MT
44
Installing

counte
haft

front
bearing
Manual
Transmission

6

Support
adapter
plate
in

a
vise

with

Setting
Plate

Adapter

ST238
10001
with
mainshaft

facing

down

7
Install

mainshaft
reverse

gear

plain
washer

on
the
rear
of
mainshaft

and
install
mainshaft
nut

Tighten
mainshaft
nut

temporarily

8
Install

counter
reverse

gear
on
the

rear
of

countershaft
and
secure
with

map
ring

Use

snap
ring
to

give
a
minimum

gear
end

play
See

Figure
MT
45

No
Thickness
mm
in

I

2

3
1
4
0
055

1
5
0
059

1

6
0
063

o
TM361

Fig
MT
45

Imtalling
counter
reverse

gear

nap
ring

9
Install
reverse
idler

gear
on
re

verse
idler
shaft

10
With
1st
and
2nd

gears

doubly

engaged
tighten
mainshaft
nut
to
the

converted

torque
Cn
See

Figure

MT
48

using
Wrench
ST22520000

See

Figure
MT
4
7

ST22520000

TM768

Fig
MT
46

Tightening
mainshaft
nut

MTll
Explanation
of
converted

torque

Mainshaft
nut
should
be

tightened

to
14
to
17

kg
m
101
to

123
ft
lb

torque
with

the
aid
of

Wrench

ST22520000
When
doing
so
the

amount
of

torque
to
be

read
on

wrench
needle
should
be
modified

according
to
the

following
formula

L

C

kg
m
14
x
to

L

O
lO

L

17
x

L

0
10

or

L

C
ft
lb

101
x

L
0
33
to

L

123
x

L
0
33

Where

C
Value
read
on
the

torque
wrench

kg
m

ft
lb

L
Effective

length
of

torque

wrench
m
ft

ST22520000

Torque
wrench

Lm
ft
c

h

I

O
IOm

0
33
ft
TM587

Fig
MT
47

Setting
wrench

Example

When
a
0
40

m
1
31
ft

long
tor

que
wrench
is
used
the
Cn
in

Figure
MT
48
will
be
11
2
to
13
6

kg
m
81
to
98
ft
lb

I

Upper
limit
line

I

r

6
1

f
fdl

13
Converted

torque

90

I

Lower

limit
line

80

11

70
10

V
S
s

15

110

15

c

u

c

c

9

S

c

o

C

U
100
14

9

0
2
0
3

1
0
0
4
Manual

Transmission

0
5

0
6

2
0
0
7
0
8
m

2
5
It
1
5

L

Effective

length
of

torque
wrench

Fig
MT
48
CO
1Vert

d

torque

11

Tighten
mainshaft

nut
to

14
0

to
17
0

kg
m
101

to
123

ft
lb

torque
and
stake

mainshaft
nut
to

groove
of
main
shaft

with
a

punch
See

Figure
MT49

TM362

Fig
MT
49

Staking

mai
haft
nut

12
Measure

gear
end

play
and
back

lash

Make
sure
that

they
are
held
within

the

specified
values

For
details
refer

to
the
instructions

under

topic
Inspection
Note
The
main
drive

gear
and
coun

ter

driVe

gear
should
be
handled
as

a
matched

set

When

you
replace
a
main
drive

gear

or
counter

drive

gear
be
sure
to

replace
as
a
set
of

main
drive

gear

and
counter

drive

gear

ShUt
fork
nd

fork
rod

mbly

I

Place
1st
2nd
shift
fork
in

groove
in
1st

2nd

coupling
sleeve

and
slide
1st
2nd
fork
rod

through

adapter
plate
and

1st
2nd
shift

fork

Prior

to

installing
1st
2nd
fork

rod

install

3rd
4th
shift

fork
in

groove
in

3rd
4th

coupling
sleeve

Note
Shift

forks
for
1st
2nd
and

3rd
4th

are
one
and
the

same

parts

Make
sure
that
the

long
end
of
shift

fork
for

lot
2nd
is

placed
on
the

counter

gear
side
and
the

long
end

for
3rd
4th
is
on
the

e

side

MT12
Secure
1st

2nd
fork
rod
to

shift

fork
with

a
new

retaining
pin

2
Install
check

ball
check
ball

spring
and
check

ball

plug
Prior

to

tightening
check
ball

plug

apply

sealant
to
check
ball

plug

Align
notch
in

1st
2nd
fork
rod

with
check
ball

See

Figure
MT
50

TM367

Fig
MT

50

l
talling
1st
2nd

fork
rod

3
Slide

3rd
4th
fork
rod

through

adapter
plate
and
3rd

4th
shift
fork

and
secure
with
a
new

retaining
pin

Note
Prior
to

a

mbling
3rd
4th

fork
rod
install

two
2

interlock

balls
into

dap
er

plat
own
in

Figure
MT
16

4
Install
check
ball
and
check
ball

spring

Apply
sealant
to
check

ball

plug

and
install
it
in

place

Align
notch
in

3rd
4th
fork

rod

with
check
ball

by

sliding
3rd
4th

fork
rod
as

necessary
See
Figure

MT51

TM368

Fig
MT
51
Installing
3rd
4th

fork
rod

5

Place
reverse
shift
fork
in

reverse

idler

gear

Slide
reverse
fork
rod

through
re

verse
shift
fork
and

adapter
plate
and

secure
with
a
new

retaining
pin

Note
Prior
to

assembling
reverse
fork

rod
instaU
two
2
interlock
balls

into

adapter

piate
as
shown
in

Figure
MT
I6

6
Install
check
ball
and
check

ball

spring

Apply
sealant
to
check

ball

plug

and
install
it
in

place

Align
notch
in

reverse
fork
rod
with

check
ball

See

Figure
MT
52

TM369

Fig
MT
52

Installing
reverse

fork

rod

7

Torque
each
check

ball

plug
to

1

9
to

2
5

kg
m

14
to
18
ft
Ib

Note
BaD

plug
for
ht
2nd
fork
rod

is

longer
than
those

for
rev
shift

fork

rod
and

3rd
4th
fork
rod

8

Apply
gear
oil
to
all

sliding
sur

faces

and
check
to
see
that
shift

rods

operate
correctly
and

gears
are

engaged

smoothly

TRANSMISSION

ASSEMBLY

Tran
mis
lon
ea

mbly

1
Clean

mating
surfaces
of

adapter

plate
and
transmission

case

Apply
sealant

to

mating
surfaces

of

adapter
plate
and

transmission
case

2

Slide
transmission

case
onto

adapter
plate
by

lightly
tapping
with

a

soft
hammer
until
case

bears

against

adapter
plate

Carefully
install
main
drive

bearing

and
countershaft
front

bearing

Make

certain
that
mainshaft

rotates

freely

3
Fit

main
drive

bearing

snap
ring

to

groove
in
main

drive

bearing

by

using
Expander
See
Figure
MT
53
Manual
Transmission

Fig
MT
53

Fitting
main
drive

bearing
snap
ring

R
ar
xt

nslon
ass

mbly

I
Clean

mating
surfaces
of

adapter

plate
and

fear
extension

Apply
sealant
to

mating
surfaces

of

adapter
plate
and

rear
extension

2
With
fork

rods
in

their
neutral

positions

graduaUy
slide
rear
exten

sion

onto

adapter
plate

making
sure

that

speed
change
cross

lever

engages

with

fork

rod
brackets

correctly

3

Install
washers
and

through
bolts

and

torque
to
1

6
to

2
1

kg
m

12
to

15
ft
lb

Available

shim
Front
eov
r
s

mbly

I

Select
countershaft
front

bearing

shim
as
follows
See

Figure
MT
54

1
Measure

depth
A
from

front

end
of
transmission
case
to

counter

shaft
front

bearing

2
Select
a
shim
of
thickness
A

measured

D

A

JJ
ID

@

2J1

I

Transmission

case

2

Countershaft

front

bearing

3

Countershaft

4

Shim

TM371

Fig
MT
54

Selecting
countershafl

front
bearing
shim

No

A
Countershaft
front

rnm
in

bearing
shim
mm
in

I
2
92
to
3

01
0
1150

to
0

1185
0

6
0
024

2

3
02
to

3
11

0
1189
to
0
1224

0
5
0
020

3
3
12

to
3
21
0

1228
to
0

1264
0
4

0
016

4
3
22
to

3
3
I

0
1268
to
0

1303
0
3
0
012

5

3
32
to
3

41
0

1307

to
0
1343

0
2
0
008

6
3
42

to
3
5
I

0

1346
to
0

1382
0
1
0
004

7
3

52
to

3
61
0

1386

to
0
1421

8
3
62

to
3
71
0
1425
to
0

1461

2
Clean

mating
surfaces
of
front

cover
and

transmission
case

Apply
grease
to
shim
selected
to

retain
it
on
front
cover
install
front

cover
to
transmission
case
with

gasket

in
place

Install

through
bolts
with

washers

under
them
and

tighten
to
1

6
to
2
1

kg
m
12

to
15
ft
lb

torque

Apply
sealant
to
threads
of

through
bolts
before
installation

MT13
3

Install

speedometer
pinion
assem

bly
on
rear
extension

After

making

Sure
that

lock

plate
is

lined

up
with

groove
in

speedometer
pinion
sleeve

install

through
bolts
and

torque
to
0
4

to
0
5

kg
m
3

to
4
ft

lb

4

Install
back

up
lamp
switch
and

torque
to
2

0
to
3

0

kg
m

14
to
22

ft
lb

Be
sure
to

apply
sealant
before

installation

5

Apply
a

light
coat

of
multi

purpose
grease
to

withdrawal
lever

release

bearing
and

bearing
sleeve
in

stall
them
on
clutch

housing

After

connecting
them

with
holder

spring
instaU
dust

cover
on
clutch

housing

6
Install
control
lever

temporarily

and

shift
control

lever

through
all

gears
to
make

sure

that

gears

opera
Ie

smoothly

Note
Install

drain

plug
and
filler

plug

ith
sealant
in

place
Manual

Transmission

INSTALLATION

Install
the
transmission
in
the
reo

verse
order
uf
removal

paying
atten

tion

to
the

following

points

1
Before

installing
dean

mating

surfaces
of

engine
rear

plate
and

trans

mission
case

2

Before

installing
lightly
apply

grease
to

spline
parts
of
clutch
disc

and
main
drive

gear

3

Tighten
bolts

securing
trans

mission

to

engine
to

specifications
See

Figure
MT
55

5
SPEED
TRANSMISSION

TYPE

DESCRIPTION

REMOVAL

DISASSEMBL
Y

TRANSMISSION
CASE
DISASSEMBLY

DISASSEMBL
Y
OF
GEAR

ASSEMBLY

REAR

EXTENSION
DISASSEMBLY

ADAPTER
PLATE

DISASSEMBLY

INSPECTION

TRANSMISSION
CASE
AND
REAR

EXTENSION
HOUSING

DESCRIPTION

The
transmission

is
of
a
5

speed

forward
with
overdrive
4

OD

speed

fully
synchronized
constant

mesh

type
that

uses
helical

gears

The
5

speed
transmission
covered
in

this
section
is

similar
in

all

respects
to

the
4

speed
transmission

type

F4W71B
stated

previously
except
the
CONTENTS

MT14

MT17

MT17

MT17

MT17

MT18

MT19

MT19
4
4

to
5
9

kg
m

32
to
43
ft
Ib

1

0
9
to
1
2

kg
m

7
to
9
rt
lb
TM773

Fig
MT
55

Tightening
torque

4
Remove
filler

plug
and
fIll
trans

mission
with
recommended

gear
oil

to

the
level
of
the

plug
hole

Approxi

mately
I
7

liters
3

pt
3

pt

FS5W71B

BEARING

GEARS

AND
SHAFTS

BAULK

RING

OIL

SEAL

ASSEMBL
Y

FRONT
COVER
ASSEMBLY

REAR

EXTENSION

ASSEMBLY

GEAR

ASSEMBLY

TRANSMISSION
ASSEMBLY

INSTALLATION
MT19

overdrive

position
of
it

The

overdrive

gear
rides
on
the

mainshaft

freely
through
the

needle

roller

bearing
and
counter

overdrive

gear
is
fitted
to
the

countershaft

by

splines

The
overdrive

synchronizer
system

is

on
the
mainshaft
rear
side

MT14
MT19

MT19

MT19

MT19

MT19

MT19

MT19

MT19

MT

20

MT20

Placing
the
control
lever
in

over

drive

position
brings
the
reverse
OD

coupling
sleeve
reverse

gear
on
main

shaft
into
mesh
with
overdrive
clutch

gear
The
reverse
OD

synchronizer

hub
is

fItted

to
the
mainshaft

by

splines
so
the
overdrive

gear
on
main

shaft

turns

together
with
the
main

shaft

Manual
Transmission

@
I
j

b
00

7

@

f

1
Front

cover

2

Front
cover
oil
seal

3
Front

cover

gasket

4

Transmission
case

5

Adapte
plate

6

Maimhaft
bearing

7

Bearing
retainer

8
Rear

extension

9
Breather

10
Rear
extension

oil
seal

11
Sleeve

yoke
dust
cover
f

@3

TM046A

Fig
MT

56
FS5W71B
transmission
case

components

MT15

Manual
Transmission

j

W

h

I

l

1

Main
drive

gear

2

Baulk

ring

3

Shifting
insert

4

Shifting
insert

spring

5
Synchronir
c
r
hub

6

Coupling
slee

7
3rd
main
gear

g

Needle

bearing

9
Mainshaft

10
2nd
main

gear

11

Bushing

12
1st
main

gear

13
O
revcrse

synchronizer
hub

14

Rever

gear

15

Circlip

16
Thrwt

block

t
7
Brake
band

18

Synchronizer
ring

19
Overdrive
main
gear

20
Overdrive
gear
bushing

21
Washer

22
Mainshaft
nut

13
Overdrive
mainshaft

bearing

24

Speedometer
drive

gear

25

COlplteBhaft
fr
mt

bearing
shim

26
Countershaft
front
bearing

27
Countershaft
drive

gear

28
Coontcrshaft

29
Countershaft
bearing

30
Reverse
counter
gear

spacer

31
Rever
C
counter
gear

32

rdrive
counter

gear

33
Countershaft
zear
bearing

34
C
untershaft
nut

3S
Reverse
idler
lIhaCt

36
Reverse
idlcrthrust
washer

37
Reverse
idler

gear

38
Reye
nc
idler

gear
bearing

39
Reverse
idler
thrust
w8
her

TM041A

MT
16
Fig
MT
51
FS5W11B

tru
miasion

gear
componenta

Manual
Transmission

CD
t

e
I

2

3

4

5

6

7

8

9

10

11

12

13

14

17

18

19

O
20

o

21

24

25
j

@
Striking
lever

Lock

pin

Q

ring

Striking
guide

Oil
seal

Striking
rod

Expansion
plug

Stopper
guide
pin

Return

spring

Return

spring
plug

Return

spring
plunger

Check
ball
plUS

Check

spring

Check
ball

Retaining
pin

Interlock
ball

ist
2nd
shift
fork

1st
2nd
fork
rod

3rd
4th
fork
rod

Reverse
OD
fork
rod

3rd
4th
shift
fork

Revene
OD
shift
fork

Con
trol1ever

Con
trol1cver
pin

Con
trollever
bushing

TM048A

Fig
MT
58
FS5W71B
trammi
ion

shift
control

component

3
Draw
out
counter
drive

gear
com

plete
with
main
drive

gear
assembly
by

means
of

a

gear
puller

When

drawing
out
main
drive

gear

assembly
be
careful
not
to

drop

pilot

needle

bearing
onto
floor
from
the

front
end
of
mainshaft
See

Figure

MT
60
REMOVAL
Same

as
for
the
F4W71B

DISASSEMBLY

TRANSMISSION
CASE

DISASSEMBLY

Same
as
for
the
F4W71
B

DISASSEMBLY
OF

GEAR

ASSEMBLY

Fork
rod

Same
as
for
the
F4W71
B

Geer
sembi

I

With

gears
doubly
engaged
draw

out

counte
haft
front

bearing
using
a

suitable

gear
puller
See

Figure
MT
59

2
Remove
counter
drive

gear

snap

ring
TM398

Fig
MT
59

Removing
countershaft

front
bearing

MT
17
TM756

Fig
MT
60
Removing
counter
drive

gear
and
main
drive

gear

4

Rem6vesnap
ring
and
then
thrust

washer
from
mainshaft
front
end

Draw
out
3rd
4th

synchronizer

assembly
and
remove
3rd

gear
assem

bly

5
Remove

snap
ring
and
then
draw

out

speedometer

gear
and

bearing

from
mainshaft
rear
side

6
With

gea
doubly
engaged
re

lease

caulking
on
countershaft
and

mainshaft

nuts
then
loosen
them

Remove
countershaft
nut