ECU DATSUN B110 1973 Service Manual PDF

CLUTCH

Clogged
vent
hole
in
reservoir

cap
promotes

vacuum

in
master

cylinder

allowing
air

to

inf1ltrate

past
the
seal

Abnormal

lining
wear

Insufficient

pedal
free
travel

The
clutch

grabs

The
clutch

slips
Driver

steps
unnecessarily
on

pedal
this

causes
lin

jog
wear

and

damage
to
release

bearing

Weakened

or

snapped
pressure
springs

Incorrectly
installed

linings

Oil
or

grease
on

flywheel
pressure
plate
and

linings

Loose

disc

linings
due

to

poor
rivet

tightness

Clutch
disc

hub
does
not

slide

freely
on

drive
shaft

spline

Warped
or
cracked

pressure
plate

Misalignment

Stiffened

hydraulic
control
mechanism

Wom
out

lining

Insufficient
clutch

pedal
return

travel
due

to
the
control
and

pedal
return

springs
being

weak
or

misadjusted

Weakened
or
broken

diaphragm
spring

Oil
or

grease
on

linings

eLl5
Clean
reservoir

cap
unclog
the
vent

hole
and

bleed

the

system

Adjust
clutch

pedal
free
travel

correctly

Advise
driver

to
discontinue

wrong

practice

and

step
on

clutch

pedal
only
when
ne

cessary

Check

pressure
springs
for
tension
as

speci

fied
and

replace
springs
if

they
are

unserviceable

Replace

linings
with
new
ones

and
install

them

correctly
Check
clutch
disc
for
center

alignment

Remove
cause

of

leakage
clean

flywheel
and

pressure

plate
thoroughly
replace
linings

If

linings
are
not
worn

replace
defective

rivets

Otherwise

replace
linings
and
clench

rivets

securely

Remove

any

foreign
matter
or

dirt

deposits

from
shaft

splines
When
trouble
is

still

present
replace
damaged
parts

Replace
pressure

plate

Locate
the
defective

point
and
if

possible

adjust
alignment
or

replace
distorted

parts

Check

spring
tension

If

necessary
take

down

pedal
and

lubricate

components

Install
new

linings
and

make
sure
tha

t
the

clutch

disc

pressure
plate
and

flywheel
are

not

damaged

Locate

cause
of
failure
and

replace
defective

springs

Overhaul
clutch
and

replace
springs

Remove
cause
of

leakage
and

replace
linings

if

cleaning
is

ineffective

TRANSMISSION

I

Jack
up
the
vehicle
and

support
it
with
four
stands

If
available
recommend
a

hydraulic
hoist
or

open
pit
be

utilized

2

Disconnect
the
front
exhaust
tube

D
from
the

exhaust
manifold

Fig
TM
4
Underside

of
vehiJ
1e

3
Remove
the

propeller
shaft

@
by
removing
four

securing
bolts
from
the

companion
flange
of
the

gear

carrier
Seal
the
end
of
the
rear
extension

housing
to

prevent
oil

leakage

Fig
TM
5

Removing
propeller
haft
4
Disconnect
the

speedometer
drive
cable

ID
and

back

up
lamp
switch
cable
from
the
transmission
ex

tension
housing

s
Disconnect
the
shift
rods
from
the

shift
levers

by

removing
the
cotter

pin
and
remove
the
cross
shaft

assembly
@
from
the
transmission
case

r

J
f

f

1

I
Speedometer
cable

I
2

I
Cotter

pin

Fig
TM

6

Disconnecting
speedometer
cable

and
remote

controllinkag

6

hydraulic
clutch
control

Remove
the
clutch

operating
cylinder
from
the

clutch

housing

7
mechanical
clutch
control

Disconect
the
clutch
control
cable
from
the
withdrawal

lever

1

1
Withdrawal
lever
2

I
Clutch
control
cable

Fig
TM
7

Disconnecting
clutch
control
cable

8

Support
the

engine
with

ajack
placed
under
the
oil

pan
Do
not
loca

1
f
nder
the
oil

pan
drain

plug

I

i
l

TM
3

CHASSIS

To

prevent
the
oil

pan
from

damaging
insert

a
wooden

block

between
the

pan
and

jack

9

Remove
two
nuts

@
used
to
attach
the

transmission

to

the

rear

engine

mounting
member

Place

a

jack
under

the

transmission
and

remove
two
bolts

@
used
to

fix
the

rear

engine
mounting
member
to

the

body

It

I
Rear

engine
mou

ting

installation

bolts

I
Rear

engine
mounting

bolts

I
2

Fig
TM
8
C

oss

Fberremoval

10

Raise
the

jack
supporting
the

engine
to
incline
the

engine
in
a
rearward

direction
A

sufficient

space
will
be

provided
for
transmission

removal

I
Remove

the

starting
motor
a
d
the

bolts

attaching

the
clutch

housing
to
the

engine

12

Lower
the

jack
under
tlie

and
withdraw
thS
transmission

iJ

DISASSEMBI
Y
trans
fljssion
gradu3Ily

1

j

I
When

disassembling
the
transmission

the

following

procedure

sh
ould
pe
adopted
Since
the

casings
are
made

of
aluminum

alloy
be

careful
not
to

damage
any
of
the

castings
C

t

l
t1
Drain

gear
o

frqrP
the
transmission

I

2
Rc

ove
the

dust

cover
release
the

withdrawal
lever

n
turn

sprin
and
remove
the

withdrawal
lever
and
release

bC
lring
from
the
clutch

housing

h

IF
i

Iii

h

l
11
I
W

ithdrawallever

I
Return

spring

1

31
Release

bearing

Fig
TM
9

Removing
release

bearing
and

withdrawal

lever

3

Remove
three
bolts

securing
the

front
cover
and

remove
the

front
cover

II
I
Front
coveT

L
I
Bolt

Fig
TM
10
Remd

ving

fron
cover

4
Remove

the

spced
omcter

pinion
assembly

1f

SPEEDOMETER

PINION

ASSEMB
Y

w

Fig
TM

11

Removing
speedometer

pinion

TM

4

eo

TRANSMISSION

5
Remove
the
return

spring
plug
and

remove
the

return

spring
plunger
and

bushing
from
the

inside

I

I
Plunger

2

Bush

I

I
Return

spring

Return

spring
plug

Fig
TM
12

Removing
return

spring

6
Remove
the

striking
rod

pin
from
the

striking
rod

rear
end
and

separate
the

striking
rod
from
the
control

lever
bracket

Fig
TM
i3
Re

ving
striki

g
rtfd

7
Remove

eight
bolts

lr
g
the
rear
extension

housing
and
remove
the
housing

Note
I

li9htly
tllp
the
ci
cumferen
with

a

mallet
and
withdraw
the
h

sin9
wooden

i

l

E
8

Separate
the

adapter
plate
from

the
transmission

case

Note
a
The
main
shaft

assembly
and
counter
shaft

assembly
are
installed
on
the

adapter
plate

b
When

removing
be
careful
not
to

lose
bearing

washer
installed
on
the
front
end
of
the
counter

shaft
r

i

i

1

il

ti

E

Fig
TAl
i4
Transmission

disasi
IY

9

Facing
the
reverse
idler

gear
upward
set
If
on
an

adapter
setting
plate
special
tool
ST23820000
and

secure
them
in
a
vise

C

j

J

f
f

L

jlor

f

0

1

J

t
1

PiS
TM
15

SettinR
trcw
wli
sion

geei
assembly
1

10
Remove
the

retaining
pin
by
the
use
of
a
fork
rod

pin
punch
special
1001
ST23520000
and
withdraw
Ihe

reverse

gear
shift
fork
and
reverse
idler

gear

TM
5

A
f

fVI

CHASSIS

9
Install
the
steel
ball
synchro
hub
thrust
washer
and

main
shaft

pilot
bearing

Note
a
Grease

sliding
surface
of
the
steel
ball
and
thrust

washer

b
When

nstailing
the
thrust
washer
be

careful
to

face
the
front
and
rear
directions

correctly

THRUST
SIDE

FRONT
OIL
GROOVE
SlOE

REARl

if
c
o

DINT
FOR
OIL

r
1

r

Fig
TM
J8

Synchro
hub
thrust
washer

i
the
main

bearing
front
side
to
the
main

drive

gear
m
stall
the
main

bearing
washer
and

snap
ring

Note
When

installing
the
main

bearing
washer
be
sure

to
face
the
web

portion
to

the

bearing
side

b
Be

SUo
re
to
fit
the

snap
ring
correct

y

r
secu

tDthegroove

t
I
i

II

t
d

l

I

t

iIf
i

c

c

f
1
ST22350000

It
i

r

4

t

r
4

FiftJ
g
mairi

shafi
bearing

A

I

t

T
M
12
II
Install
the
baulk

ring
on
the
main

drive

gear
and

combining
with
the
main
shaft

complete
the
main

shaft

assembly

12
Combine
the
main

shaft

assembly
with
the

counter

shaft
and
install
them
on
the

adapter
plate

Note

Apply
the
main

bearing
front
end

approximately

5

mm
0

1969
in
fim
line

up
the

counter
shaft

bearing
center

lightly
tap
the
main
drive

gear
with

a
wooden
mallet
and
thus
install

the
main
shaft

assembly
and
counter
slieft

on
the

adapter
plate

Fig
TM
40

Combining
gear
assembly

13

Install
the
shift
fork
on

each
fork
rod

1
II0te
a

Pay
attention
on
the
shift
fork

installing
direc

tion

b
Be
sure
that
there
is
no

98
between
the
fork

rod
and
shift
fork

J

b

I

1

lIst
2nd
shift
rod

2

Striking
rod

13
13rd
4th

hift
rod

4
Reverse

shift
rod

Fig
TM
41

La
put
of
shift
fork
and

fork
rod

1

r

J

j

TRANSMISSION

14
Install
each
fork
rod

together
with
the
check
ball

plug
check
ball
check
ball

spring
and
interlock

plu
er

by
the
use
of
a
fork
rod

guide
special
tool
ST236200
0

Note

a
Install
the
fori
rod

at
a

p
tion
where
tha

for

rod
check
ball

groove
coincides
with
the

ball

b
In
tha
standard

position
upper
surface
of
the

plug
is

flush
with

upper
surface
of
the

adapter

c
When

installing
the

plug
ba

sure
to

apply
thread

locking
agent

I
1

I
Ch
eck
ball

I
2

I
Special
toot

ST23620000

Fig
TM
42

InstaUing
check
ball

i

l

SET
SCREW

J
r
r

I

1st
2nd
SHIFT
ROD

PLUNGER

3rd
4th

SHIF1
RO
U

BALL
lt

SPRING

r

if

If

f

J

REVERSE

SHIFT
ROD

Fig
TM
43

Layout
of
check
ball
15
Drive

shift
fork

retaining
pin

Fig
TM
44

Driving
retaining
pin

16

Install
the
main

shaft

reverse

gear
thrust

washer

and

secure
them
with

a

snap
ring

Note
When

installing
the
thrust

washer

tha
web

portion
to
the

gear
sid8
be
sure

to
face

I

J
ll

it
ij

I

r

7

I
t
Lt

l

i

JI

h

l

p

II
Si

ap

dng

l

iVf

31
via

I
i

i
2
I

Reverse

gear
rll
f

F
O
1

Ii

ct
I

C

I
jf
1
Fig
TM
45
bista

ling
reveTS

gear
fJ
i

tJ
i

J

I

1
i
4

1
a

ot

j

l

i1i
o

f
tJ
r

w
i6

J
t
F
I

f
1

it
IV

I

17

1

t
1
the
reverse

@Isr
e
r

tilgether

wi1
tJthe
r

shift

k
Oc
shi
k
7i
fN

revers
lO

r
r
1

mg

1

1

f
i

J
4t
z
1

if
f

St
J
f

l

p

t

A
J

t
M
ff

J
1

A
Note

In
order
to
in

re
t

1h

f
t
li
u
r

is
O

cracked

apply
onl
fo
rk

r
id
ope
te

thet6t1ier

fori

J

t
i

fod
an
make

sU

r
e
that

th
gljllr
aoes
nOt
miiSli

J
o

I

t
J

t

if
z
TM
13

1

t

YO

TRANSMISSION

27

Upon
completion
of
the

reassembly
confIrm
that

Measure

depth
from

the
front

cover
installing

I
The
main

shaft
is

notJ
tiirned
synchronously
when

I

surface
to
end
surface
of
the
main

bearing
outer

gear
is

shifted
to
neutral
and
the
main

drive

gear
is
turned

race
by
the

use
of
vernier

caliper
depth
gauge
nd

light1y

select

shimlsl
from
those
shown
in
the
foIlOW

g

l

table
so
that
the

depth
is
5

g
15

mm
0
1
9

2

Operatin
r
e
is

not
excessive

d

gears
n

be

t

o
0059

in

i
shifted

smoothly
when

Ifjifted
to
the
mdlVldual

speeds

rt
6
1

1
itl
M

il

TM
15

If

tl
Fig
TM
50

Installing
rear
extension

21
Install
the
bushing
plunger
return

spring
and

return

spring
plug

Note
When

installing
apply
adhesive
to
the
return

spring

plug

t

l
4

0

fj

I

t

I
Plunger

2
Bush

I
31
Return

spnng

4
Return

spring
plug

Fig
TM
51

Installing
return

spring

22

23

24
Install
the

stopper
pin
and
E
rjng

Instal
e

speedometer
pinion

Select
main
drive

gear
bearing
shim
s

Note
Part
number

Thickness

mm
in

32208
18000

32208
18001

32208
18002
0
5
0

0197

0
2

0
0079

jeL

J
f
l
r

I
l

0

J

3

I
L

r
1

v

tti

t
4J

m

cv

Shim
thickness

t

5
00
mm
O

1969
n

2

3

J

ib

m

J

i
I

Shim
thickness

f

I

M
r

Fig
TM
52
Seiecti

g
main
drive
7

arbeari

g
s

j

I

25

Install
the
oil
seal

on
the
fronhcover
amtsecure
it

together
with
the

adjusting
shim

4f
J
ring
0

Note
Grease
the
oil
seal

lip

I

26

Install
the

ci
Itc
release
b

aring

luru
rring
and

withdrawal
lever
p

Main
d
ve

gear

Front
cover

Front
cover

adJhsting
shim

i

Ii