1969 DATSUN B110 Service Repair Manual

Bneine

Remove
the

011

pan
and
011
straIner

Remove

the

tImIng
chaIn

cover
and
the
chaIn

tenSlOner

Remove
the

crankshaft
and
camshaft

sprockets

together
WIth
the

timing
chaIn

Fig
21

Tlmmg
cham
cover

removal

I

FIg
22
PIston
and

connectmg
rod

assembly
removal

Fig
23
Rear

011
seal
removal
Rotate

the

engIne
a

quarter
turn
and

remove

the

piston
and

connectIng
rod

assembly
Take

off
the

connectIng
rod

beatings
at
the

same

tIme
and

keep
them
In

order

Rotate
the

engIne
a

quarter
turn
and
remove

the

flywheel

Remove

the
maIn

bearIng
cap
and

the
rear
011

seal

Remove
the
crankshaft

Remove

the
baffie

plate
and

the
crank
case

net

Remove

the
camshaft

after

takIng
off

the
cam

shaft

plate

Remove

the
valve
tfter

Remove
the

piston
rIngs
With
a

tlng
remover

Press
out
the

piston
pIn
With

a

piston
pin

remover
and

an
arbor

press

Remove

the
valves

USIng
a
valve
tfter

Be
careful
not
to

lose
valve

sprIng
seat

011
seal

valve
collet
and
valve
rocker

sprIng

FIg
24
Baffle

plate
and

net
removal

Fig
25
Camshaft

plate
removal

17

Bogioe

0

WAI
CI

o

o

WAIl
Cl

I

Fig
26
Valve

components

FIg
27

Cylinder
head

Cyhnder
head
surface
flatness

Standard
MaxImum

m
m

Al2

Engme
less
than

o

0020
o
0039

INSPECTION
AND
REPAIR

Preparation

Check
the

cyhnder
head
and

cylinder
block

for

traces
of
water
leaks
before

cleaning

Clean
all

parts
to
remove
011
stains
carbon

depoSits
fur
and
other

foreIgn
matters

com

pletely

M
k

s
lr
1at
all
o
hol

Lare

clear
Blow

air
Into

them
If

reqUIred

18
Fig
28

Checking
the

cylinder
head
surface

Fig
29

CheckIng
valve
stem
dIameter

Secure

proper
assembly
carefully

Cylinder
Head

Checking
cylinder
head

mating
face

VIsually
check
for
cracks
and
flaws

Measure
the
surface
of
the

cyhnder
head
on

the

cyhnder
block
SIde
for

warping
If
It
ex

ceeds
the
hmlt
indIcated
below

regrind
afTec

ted
surface
wIth
a
surface

grinder

Valve

Assembly

Check
each
of
the
Intake
and
exhause
valve

assembhes
for

worn

damaged
or
deformed

valve

caps
and
stems
Correct

or

replace
the

valve
If

reqUIred

The
valve
face

or
valve
stem
end
surface

should
be
refaced

by

usmg
a
valve

gtlnder

Notes

a
Deflection
of
seat
surface

against
axis
should
be

0
0012
in

or
less

b

o
rr
ctnes
f

right
angle
and

out
of
round
should
be

0
0004
in

or
less

IBglne

Note
When
the
valve
head
has
been

reduced
to
0
0197
in
or
less
in
thickness

replace
the
valve

Grinding
allowance
for
the
valve
stem

end
surface
is
0

0197
in
or
less

Valve

spring

Measure
the
free

length
and
the
tensIOn
of

each

spnng
If
the
measured
value
exceeds

the

specIfied
hmlt

replace
the

sprlllg

Check
each

spnng
for
deformatIOn
with

a

square

Any
sprmgs
w1th
deflectIOn
of

0
0630

III
or

more
must
be

replaced

Valve
Rocker
Shaft
and
Rocker
Arm

Check
the
valve
rocker
shaft
and
rocker
arm

1

N
in

00

9E
22

N

o

NO

I

I
I

I

1
I
I

Ll
gE

N
cno

CX
co

00
r

o
171M

OtM
Be
22

Bo

l
N

11
lit

l

o
cnM

l
Q

1

45
30

290
to
29
2
die

1142
to

1
1501
N

I

350
to
35
2dla

1
378
to
1386

INTAKE
EXHAUST

UNIT
mm

lnl

Fig
30
The
Intake
and
exhaust
valves

Fig
31
Valve

grinder
for

seizure
and

wear
and

repair
or

replace
as

required

Valve

rocker
arm
to
shaft
011
clearance

o
0008
to
0
0020
III

Spnng
specIficatIOns

Free

length
1
831
In

Valve
closed

1

524
In
at
52
7
Ib

Valve

open

I
19
III
at
1291b

EM
J

Fig
32
Valve

spring
test

Fig
33
Valve
rocker
shaft

lB

Bn
in1l

If

camshaft

bearmg
clearance
IS
exceSS1ve

replace
the
camshaft

bearmgs
with
service

parts
When
valve
contact
surface
of
the
valve

rocker

arm
IS
worn

excessively
m

step
repair

by
means
of

a
valve

grinder
or

replace

Grinding
allowance
for
valve
contact
surface

of
the
valve
rocker

arm
IS
0
0197
In

or
less

Valve
Lifter
and
Push
Rod

Check
the
valve
hfter
for

wear
seizure
and

bevel

edge
contact
and

repair
or

replace
as

reqUIred

Measure
clearance
between
the
hfter
hole
on

the

cyhnder
block
and
valve
hfter
and

replace
the
valve
hfter
when
clearance
ex

ceeds
the
hmlt

Check
the

push
rod
for

bendmg
and

damage

and

repair
or

replace
as

reqUIred

Camshaft
and
Camshaft

Bearing

Measure

mner
dIameter
of
the
camshaft

bearing
and
outer
diameter
of
the
camshaft

Journal

Standard
MaxlIDum

m
m

Valve
hfter

hfter
hole
o
0059

o
0008
to
0
0020

clearance

limit
0151010
00059
m

Standard
003
to
0071010

00012
to
00027
m

Fig
34
Camshaft

bearing
check

20
Valve

Timing

If
the
camshaft
has
no

apparent
damage

although
some
valve
troubles
have
been
detec

Standard
Wear

hm1t

1st

00015luOO024

2nd

00011
to
0

0020

Ot

3rd

clearance

00016
to
00025
o
0059

In

4th

00011
to
0

0020

5th

00015
toO
0024

1st

1
7257
to
I

7261

Inner
2nd

1
7050

to
1

7060

diameter
of

camshaft

3rd

beanng
1

6865
to
1

6868

m

4th

I

6663
to
I

6667

5th

1

6243
to
1

6247

TDC

DIRECTION

OF

ROTATION

EXHAUST
INTAKE

BDC

Fig
35
Valve

timing
diagram

ted

compare
valve

ttmmg
data
wIth
the
valve

I

ttmmg
diagram
to

ensure
that

begmmng
and

endmg
of
stroke
for
all

cylmders
are
com

plymg
with

specified
advance
and
retard

figures

Cylinder
Block

Check
the

cyhnder
head

v1sually
for
defects

such

as
cracks
and
flaws

Measure
the

top
of
the

cyhnder
block

cyhn

der
head

matmg
face
for

warpmg
If
the

warp

exceeds
the
hmlt
correct
1t

Measure
the

cyhnder
bore
for
out
of
round

and

wear
WIth
a
bore

gauge
If
wear
or

out
of
round
IS
exceSS1ve
rebore
the

cyhnder

walls

by
means
of
a

bormg
machme

Umt

degree

a

b
d
f

c
e

248
248
14
54
12

56

Standard
MaxImum

tolerance

Surface
flatness
less
than

o

0020
o
0039

m

Distortion
limIt
0
101010

00039
In

Standard
0051010

100020
In

or
less

Fig
36

Cylinder
block
surface
check
Bogioe

When
wear
or
out
of
round
1S
mmor
and

wlthm
the
hmlt
remove
the

step
from
the

top

most

portIOn
of
the

cyhnder
by
the
use
of
a

ridge
reamer
or
other
slm11ar
tool

Piston
Piston
Pin
and
Piston

Ring

Check
for
seIzure
scratch

and
wear

Replace

as

reqUIred

Measure
Side
clearance
of
each

piston
rmg

and

ring
groove
WIth
the

piston
rmg
mstalled

on
the

piston
Clearance
of
a
new

pIston
and

p1ston
rmg
should
be
as
follows

Place
the

rmg
at
the
bottom
of
the

rmg

traveled

part
of

cyhnder
bore
m
wh1ch
It
wlll

be
used

Wear
limIt

02mm

0
0079
In
I

Fig
37

MeaSUring
the
cylinder
bore

SAO

I
O

I
f

Fig
38
Piston
and

connecting
rod

assembly

II

BogiDe

SIde
clearance

Standard
Wear
limIt

m

m

Top
rIng
o
0079

0015

to
0
0027

2nd

rIng

00015
to
0

0027
o
0079

Ot

rIng

00015
to
0

0031
o

0079

EM129

Fig
39
Side
clearance
measurement

Fig
40
Ring

gap
measurement

22
Rmg
gap

Standard
Wear
limIt

m
m

Top
rmg
o
0394

00079
to
0
0138

2nd

rIng
o

0394

00079
to
00138

OtlrIng
o
0394

00118

to
00354

Fig
41
Piston

pin

fitting
EM131

Fig
42

Measunng
piston
pin
diameter

Square

rmg
m
bore

by
pushing
It
mto

pos1t1on

wIth
the
head

piston
Measure

gap
between

ends
of

rmg
with
feeler

gauge

Gap
should
be
as
hsted
above

Note
a
When
the

piston
ring
only
is
to
be

replaced
without
the

cylinder
bore

bemg

corrected
measure

gap
at
the
bottom
of

the

cylinder
where
the
wear
is
minor

b
Overs1ze

piston
rings
are
avaIlable
for

service
50
100
150

oversize

Measure
the

piston
pm
hole
m
relation
to
the

outer
dIameter
of
the

pm
If
wear
exceeds
the

hmlt

replace
such

piston
pm
together
with

the

pIston
on
whIch
It
IS
mstalled

PI

ton

pill
dldmeter

06869
to
06871

PIston

pill
length

25681
to
5779

Piston

pm
hole
dta

meter
06874
to
0
6871

PIston

pm
to

piston

clearance
00002

to
OOUr
j

Interference
fit

of

piston

pm
to

connectmg
rod
o
0008

EM133

FIg
43
Connecting
rod

ahgner
Bngine

Flttmg
of

piston
pm

Determme
the

fittmg
of
the

piston
pm
mto

the

piston

pm
hole
to
such

an
extent
that
1t

can
be

finger
pressed
at

room
temperature

ThIS

piston
pm
rnust
be

tight
press
fitted
mto

the

connectmg
rod

Connecting
Rod

If

a

connectmg
rod
shows

any
scratch
or
score

mark

or
IS

pitted
on
both
Sides
of
the
thrust

face
and
the

large
end
correct

or

replace
It

Check
for
bend
or
torsIOn

usmg
a

connectmg

rod

ahgner
If
bend
or
torsIOn
exceeds
the

hmlt
correct
or

replace
the

connectmg
rod

When

replacing
the

connectmg
rod
select
the

rod
so

that

weight
difference
between
new
and

old
rods
IS
wlthm
0
18
oz
m
umt

weIght

Standard
MaXimum

Connectmg
rod
bend

bend

or

tOrsIon

per
100
mm
o

0020

or
3
94

m

length
o

00391
torsIOn

o
0028

I

Standard
MaXImum

BIg
end

play

00079
to
0
0118

I
U0157

FIg
44

Big
end

play
check

23

BogiDe

27
00
to

27
05
1063
to

1
0651

1910
to
1940
1910
to

19
40

0752
to

07641
0752
to
0

7641

49951
to
49
964

dl

11
9666
to
1
9671

ALL
MAIN
BEARING

JOURNALS
34
97
to

35
03

1
377
to

1

3791

44
961
to
44
974
dl

1
7701
to
1
7706

ALL
CRANK
PINS

UNIT
mm
m

Fig
45
Crankshaft

S

tanddrd
MaXimum

Taper
out
of
round

of

uank

Journal
and

o
0004
00012

crank

pm

Standard
MaxJmum

Crankshaft

bend

m

o
0006
o
0020

Install

connecting
rods
wIth

bearings
on
to

the

corresponding
crank

pinS
and
measure
the

thrust
clearance
If
the
measured
value
ex

ceeds
the
hmlt

replace
such

connecting
rod

Crankshaft

Check
the
crankshaft

Journal
and
crank

pin

for
scars
biased
wear
and
cracks

Repair
or

replace
as

reqUired

Check
the
crankshaft
for
bend
If
the
bend
ex

ceeds
the
hmlt

replace
the
crankshaft

Note
When

me
8

sJlring
jJ
nc
ldtSe
dial

gauge

14
Standard
Llmtl

Crankshaft
free
end

play
m
o
0020
to
0
0059
00118

EM141

Fig
46

Plasllgage

Bend
value
is
a
half
of
the

readmg
ob

tamed
when
the
crankshaft
is
turned

once
with
the
dial

gauge
applied
to
Its

center

journal

After

regrInding
the
crankshaft
fimsh
It
to

the

necessary
size

by

uSing
an

adequate
un

derSize

bearing
according
to

the
extent
of

reqUIred
repair

Install
the
crankshaft
In
the

cyhnder
block

and

measure
th
the
thruht
clearance

Check
the

main
drIve
shaft

pilot
beating
at

the

rear
end
of
the
crankshaft
for

wear
and

damage

Replace
It
1f

any
defects

are
detected

Bushing
and

Bearing

Check
all

bearIngs
and

bushings
for

seIzure

melt

scar
and
burr

Rgj
Jlace
bushings
If

any
defects
are
detected

Wipe
off
011
and
dust

especially
the

rear
of

the

bushing

Set
the

main

bearing
on
the

cap
block