1969 DATSUN B110 Service Repair Manual

ApplYing
a
sUItable
wrench
or

spanner
loosen

off
the

regulator
valve

Note

a
When

placmg
the
valve
m
a
VIse

use
extreme

care
not
to
dIstort
the

pump

body
and
cover
in
the

jaws

b
Do
not

pull
out
the
drive
shaft

pin

securing
the
drIven
shaft
and
inner
rotor

The
shaft
is

press
fitted
to
the
rotor
with

the

pin
calked

Inspection
and

Repair

Clean
the
dIsassembled

parts
with

cleamng

solvent
and

Inspect
for
defects

Inspect
the
dnve
rotor
shaft
for

excessIve

wear
and
scores
and
check
the

follOWing

clearances

SIde
clearance
between
outer
and

Inner

rotors
0
0047
In

or
below

Tip
clearance
00016
to
0
0047
In

Clearance
between
outer
rotor
and

body

o

0059
to
0
0083
In

AdjustIng
Regulator

Insert
valve
In

the

body
and
measure
the

dIstance
A
from
the
valve
end
to
the

spnng

contacting
face
inside
the

plug
See

Figure
74
Bngine

1

Adjusting
h
rn

rJ
Regul
m

Valve

spnn

FIg
74

Regulator
valve

The
distance
from
the

spring

contacting
face

inSide
the
valve
to
the
valve
end
amounts
to

o

7086
m

On

inspecting
the
above
dlmenslOns
deter

mine
the
thickness
of

adjusting
shim

ShIm
thickness
A

0
7086
In

spring

length
at

compresslOn
load
809
lbs

Assembly

Assembhng
the
011

pump
IS
the

reverse
order

of

disassembly

Note
a
Be
sure
no
traces
of

grinding

chips
lint
or
dirt
remain

b
Be
sure

gasket
is

not
turned

up
and

dIscontinued

33

11

1
r

t
i

4lI
t

it
j

t
rt

l

I

it

t
8
J

A

l

t
ty
1

1

J

t

1

r

t

d

V
i
f

r
1

t
r

p

J
i
K

l

j
F

p
ll

t
f

i1

AP

J

l
v
i
I

j
ll
f

r
f
1ll
0
0

l
t
l

l
pJ

Bleatriall

System

STARTER

I
Gl
U
ne

2

Dmt
oyer

3
Shift
h

vu

4

Dusll
ovcr

5
Shift
knr

pm

6

Magndlf
Wlllh

1

Lntubr
f
t

8
Arlll
ture

9
Thru
ot
w
L

ht
t

to
Metal

it

Stoppu
w
l
hu

12

Stoppt
rdlP

13
Pinion

toppu
@
@
@
@

I

15

16

17
Pmlon

Ovu

rumuRl
dukb

I
KId
lOll

Yok
18

Uru
h

19
Bru
l
b

20

Rl
ar
t
r

11

Through
bolt

Fig
75
Exploded
view
of

starting
motor

ALTERNATOR

CD

@OO
@
@

@
I

Pulley
assembly

2

f
on
cover

3
Front

beanng

4
Rotor

5
Rear

beanng

6
Stator

1
Rea
r
covet

8
Brush

assembly

9
Diode
t

plate
assembly

10
Diode
cover

11
Through
bolt

EE031

Fig
76

Exploded
view
of
alternator

B1eetrical

Iptem

Removal

DIsconnect
the

battery
ground
cable

Disconnect
the
black
and

yellow
wIre
from
the

magnetic
sWitch
termmal
and
black

battery

cable
from
the

battery
termmal

Remove
two
bolts
used
to
secure
the

startmg

motor
on
the
clutch

housing
Pull
the
starter

assembly
forward
and
remove
the

starting

motor

Installation

InstallatlOn
IS
the
reversal
of
removal
Removal

Disconnect
the

negatIve
battery
termmal

DIsconnect
two
lead
wires
and
connector
from

the
alternator

Loosen
the

adjusting
bolt

Remove
the
alternator
drIve
belt

Remove
the
alternator
installation
bolt

Dismount
the
alternator
from
the
vehIcle

Installation

InstallatlOn
1S
the
reverse
of
removal

TROUBLE
SHOOTING

Troubles
Trouble
IOl
JlltHI

lartlTlg
motor
will

not

operate

No

mJgnetJl
sWltdl

operating
sound
Rdttcry

IgnitIon
sWltLh

Wiring

Starler

Magnetic
SWitch

Magnetic
SWitch

operating
sound
IS

heard
Bdttery

Wifing
CaUlies
Remedies

Defective
bclttery

Rcpldt
C

bJlh
ry

Over

dlschargmg
Measure

speCific
grJvlty

of

clcl
lrolyte
dnd

chJrge
ur

repl
H
e
the

battery

Defedlvc
lontJd
orreLl
or

replJl
c

Ig

mllun
wltdl

F
lulty

Slartmg
motor

groundlllg
CorrCl
l

F

lUlty
battery
groundmg
Corrcll

Broken
or
dlM

onncdcd
t
Jble
Carrece
or

replJt
c

Broken
dnnJture
or

field
coli
cJble

RcpldCC

Broken
brush

pig
tall

Rcpldce

Dekl
llVe
mll
3
Correcl
or

repldce

Broken
or

shorted
senes

cod

Replace

FaulIy
plunger
slidmg

RepaIr
or

replace

Over

dlschargmg
Measure

speCifiC
gravity

of

electrolyte
and

charge
If

necessary

Faulty
terminal
contact
or
loose

connectIOn
Clean
and

retighten

Faulty
B
or
M
termmal
connections

Rellghten

37

Bmetrlcal

Spt

The

startmg
motor

rotates

PinIOn

gear
does
not

mtermec
h
with

flOg

gear

Pillion
mtermeshes

with

nng
gc
lT

Startmg
motor
roldles

Jud

pillion
Intermeshes

With

ring
gc
n
but
r

l
IlIan
IS

tou
slow
Startmg
motor

Magnetic
SWitch

Rmg
gear

Startmg
motor

Startmg
motor

Battery

Wiring

IgnitIOn
sWltl
h

Sldelmg
motor

38
Shorted
armature
or
field
cOIl

Worn

brush
or

Improper
spring

pressure

Contaminated
commutator
or
de

fective
mica

Faulty
brush
connection

Seized
metal

Armature
contacted
With

pole
core

Insufficient

plunger
L
dimenSIOn

Faulty
contact

Brok
en
or
shorted
shunt
call
wire

Worn
teeth

Weakened

pinion
sleeve

sprmg

Worn

pm
IOn

teeth

FJulty
plOlOJl
slldmg

Dropped
oft

lever

pill

EXl
hr

plunger
L
dlll1en
IOn

Defel
tlve
over

runnmg
dutch

Over

dlscharglOg

Improper
or
lome
termmdl
con
Lid

Improperly
tightened
connection

Rough
Lontact

urtJce

Shorted
armdture

COil
or

field
cOIl

Worn
brush
or

I11sufficlCnt

spnng

pressure

Conldmmated

Lomrnutator
or
Im

proper
brush
LonldLl

DercLllVe
nllca

Lack
or
metallubneallon

Armature
Lontdcted
With

pole
core
Repair
or

replace

Repair
or

replace

Cledn
or

repair

Repair

Replace

RepJlr
or

replace

AdjUst

ReplJee

Replace

ReplJee

Replnee

Rcpldce

RepJlr

Rep
m

Adjust

Re

place

Charge
battery

Repall
l11d

retIghten

Rellghten

RepJIr
or

replaLc

Repair
or

replace

Repair
or

replace

Repair

Repau

Repdlf
or

replace

Repair
or

replace

llectrical

Spt

When

Harting
lWltch

I

IgllltlUn
iwltch

FJuhy

rctuflung

Repldce

set
10
OFf

the
slJrl

motor

do
nut
MJgnclK
Wltdl
Seiad

contJr
l

Repldcc

IIlg

I

op

Shorted
1

011

Replace

Faulty
plunger

slidmg

Replace

StJflillg
motOr

Pillion
does
not

dlsengJge
from
the

Repair
or

replace

nng
gedr

smoothly

Pinion

sphne
dot
110t

disengage

Repan
or

replJce

moothly

SCl7Cd

pinIOn
metal

Replace

REGULATOR

Description

The

regulator
basically
consists
of
a

voltage

regulator
and
a

charge
relay
The

voltage

regulator
has
two
sets

of
contact

poInts
a

lower
set

and

upper
set
to

control
alternator

voltage
An

at
mature

plate
placed
between

the
two
sets
of
contacts

moves

upward
or

downward
or

Vibrates
The
lower
contacts

when

clo
ed

complete
the
field
CIrCUIt

dIrect

to

glOund
and
the

upper
contacts
when

closed

complete
the
field
CIrCUIt
to

ground

through
a
resIstam
e

field
COl

and

produces

alternator

output

The

charge
lelay
IS
SimIlar
In

constructIOn
to

the

voltage
regulator

When
the

upper
contacts

are
closed

IgnitIOn

warnIng
lamp
goes
on

As
for
the

constructIOn
the

voltage
regulator

IS

very
SImIlar
to
the

charge

relay
as
shown
In

Figure
78
I

POlnlsap

2
lower

nt
CI

3

Arm2fu1C

4

COfe

ap

5

Yokeg
lp

6

Connecting
pnn
t

T
Yolce

8

AdJu
fln

rcw

9
Lock
nul
Crew

13

4mmlOlli15
nldll

SCrew

14
RlaCI
I

15

Upper
Rlact

a
COlUlruci
o
o

voltage
ulato

O
0
1

EEOSJ
I
Point

gap

2
Char

Clay
nl3el

3

ConMctmg
pun

4

Armature
nl
daa

5
Core

ap
re

6
Yoke

Jap
14
4
mm
0
1575
n
dla

7
Yoke

rew

8

AdJu
llng
Cre
IS
nfaC

t
e1

9
Voila

ere
ulal0t

l
ontal
1

b

COfUtruclton

of

cha
rt
ay

FIg
n
View
of

removing
cover

FIg
78
Structural

view

81

Blectrical

Sptem

Troubles
Trouble

locatIon

Not

output
Alternator

Regulator

WIring

Low

output
Alterndtor

Regulator

Wifing
TROUBLE
SHOOTING

Causes

Sl1ckmg
brushes

Duty
brushes
and

slIp
nngs

Loose

connections
or
broken
leads

Open
stator
coLI

Open
rotor
cotl

DefectIVe
dJodes

Shorted
rotor

Shorted
stator

Grounded
A

ternunal

Broken

fan
belt

FJulty

voltage
regulator
pomt
con

tact

Broken
cable
or
disconnectIOn
of

chargIng
CIH
UIt

StIcking
brushes

Low
brush

spring
tenSion

Duty

slIp
nngs

Partially
shorted

ground
or

open

stator
cod

Partially
shorted
or

grounded
rotor

c01l

DefectIVe
dIOde

Loose
or
worn
fan
belt

Improper
voltage
regulator
adlust

Pl
n

I
Faulty
voltage

regulator
pomt
con

t

ct
Defective

operation

Faulty
chargmg
CUI
Ult
lead

WIn

connection
Remedies

Correct
or

replace
brush
and
brush

spnng

aean

RetIghten
or
solder
connection

Replace
leads
If

necessary

6

RepaIr
or

replace
the
stator
coLi

Replace
the
rotor

Replace
the
dIOde

assembly

Replace
the
rotor

RepaIr
or

replace
the
stator

Replace
the

Insulator

Replace
the
belt

RepdU
01

replace
the

regulator

Repdtr
or

replace

Correct
or

replace
brushes
If
neces

sary

Correct
or

replace
brush

Clean

Replace
the
stator

Replace
the
rotor

Replace
the
dIode

assembly

Rettghlen
or

replace
the

belt

Check
the

voltage
regulalor

op

eratIOn
no

rep
Jr
r
J
j

required

Repair
or

replace
the

regulator

Re
olf
or

rpla
e

t

J
Loose

baltery
leririmaJ

Rettghten

1

i

J
t
1

p

3

t
t

i
I

EXCCS
lVe

output
Alterndlor

P
Short
l
lfculted

or
broken
neutral

Replace
the
wife

Wife

Reguldtor
Impro
er

voltdge
regulator
adJust

ment
Defective

operatIon
9i

reg
ator

oP

P

lor

replace
as

rw
t

Check
the

charge
relay
operation

and

repair
or

replace
as

requIred
Check
the

voltage

t
fa
hon
and

ep
lf

required

Improper
charge
relay

adjustment

detecttve

operatIOn
and
or

faulty

pomt
contact

t

f

J

r

p

i
lC
I

1

1

r

i
r

A

1
A

f
l
1

1

S
1

P

1