1973 DATSUN B110 Service Repair Manual

Page 441 of 513

DATSUN B110 1973  Service Repair Manual 
ENGINE 
ElECTRICAL 
SYSTEM

EE127

Fig 
EE 
45

Brush 
wear 
limit

Spring 
pressure 
test

With 
the 
brush

projected 
approximately 
2 
mm 
0

0787

in 
from 
the 
brush 
holder 
measure 
brush

s

Page 442 of 513

DATSUN B110 1973  Service Repair Manual 
ENGINE

terminal 
to 
IN 
terminal 
or 
BAT 
terminal 
Connect 
the

other 
test

probe 
to

ground 
Make 
sure 
that 
voltmeter

registers 
battery 
voltage

4 
Start 
the

engine
3 
Turn 
on

the

Page 443 of 513

DATSUN B110 1973  Service Repair Manual 
Charge 
relay

SPECIFICATIONS 
AND 
SERVICE

DATA

TROUBLE 
DIAGNOSES

AND

CORRECTIONS
ENGINE 
ElECTRICAL 
SYSTEM

Reduction

limit

Repair 
limit

Repair 
accuracy 
mm

in

mm 
in

mm 
in

REGULATO

Page 444 of 513

DATSUN B110 1973  Service Repair Manual 
ENGINE

MEASUREMENT 
OF

REGULATING

VOLTAGE

The

regulator 
voltage 
is 
measured 
with 
the 
alternator

When

measuring 
voltage 
with

regulator 
mounted 
on

vehicle 
it 
is

necessary 
to 
rot

Page 445 of 513

DATSUN B110 1973  Service Repair Manual 
ENGINE 
ElECTRICAL 
SYSTEM

Ambient

temperature 
Rated

regulating 
voltage

roC 
OF 
V

10 
14

14 
6 
to 
15 
6

0 
32

14
45 
to 
15

45

10 
50 
14 
3

to 
15
3

20 
68 
14 
15

to 
15 
15

30

Page 446 of 513

DATSUN B110 1973  Service Repair Manual 
ENGINE

at 
4 
to 
5 
V

Use

i
f 
DC 
voltmeter 
and 
set

up 
a 
circuit

as 
shown 
in

Figure 
EE

56

EEQ58 
L 
W

R

IG

Will

r

AI 
W

lli

r

N 
Y

vge

I

JJ
Rtl 
ublOr

I 
I 
Spanner

Cros

Page 447 of 513

DATSUN B110 1973  Service Repair Manual 
ENGINE 
ELECTRICAL 
SYSTEM

Rotor

coil

inserting 
resistance 
n

n 
10 
5 
at 
20DC 
68DF

10
Voltage 
coil 
resistance

Core

gap

Point

gap 
rnm

in

mm 
in 
31

40

0 
6

to 
1 
0

0 
0236 
to

Page 448 of 513

DATSUN B110 1973  Service Repair Manual 
Low

output

Excessive

output 
Regulator

Wiring

Alternator

Regula 
tor

Wiring

Alternator

Regulatur 
ENGINE

Faulty 
voltage 
regulator 
point 
con

tact

Broken 
cable

or 
disconnection 
of