Timing Adjustment - Datsun BLUEBlRD P 410 Series Service Manual

BRAKER POINT AND IGNITION
TIMING
ADJUSTMENT
DISTRIBUTOR
I
b
Type
IgnItIon
tImIng
standard
Apparatus
of automatIc advance
Advance
startIng
vacuum
pressure
Advance
angle by
vacuum
pressure of 340
mm Hg
Number of revolutIon
at
the
start of
advance
angle
Max advance
angle
at crankshaft
RotatIng
dIreCtIOn of
cam
FIrIng
order
POInt gap
Dowel
angle
r
Contact
arm
sprIng
pressure
Condenser capacIty
HItachI 0406 01
10 before top dead
c
mt
r
at 600
r
p
m
Y
Governor type
100 120
mm
Hg
1
F
120
l8
Crankshaft
6 9 DIstnbutor
450
r
p
m
11
IS
at
2400
r p
m
CounterclockwIse
1
3
4
2
0 45 0 55
mID
0 018 0 022 tn
50 55
9 Q QS
g
O 20 O 24 mfd
InSIde the dlstnbutor
IS a
braker pOInt
as
shown
m
FIg
2TJns braker makes
and brakes
contact several thousand
tImes
In one
mmute
Each
tIme
thIS braker
brakes
contact
a
spark
IS generated
In one
of
the
spark plugs
Therefore the
maIntenance
of thIS braker
must not
be
tre
ted
lIghtly
Also because the
tIme
durIng
whIch the IgnItIOn coIl current flows
varIes
WIth the gap between these
braker pOInts
see
that thIS gap
IS
maIntaIned
at
the standard value
wJnch
IS
0 45
mm 0 018
to
G 022
In
The
brJ lker
pOInts
must
be
kept
free
of grease and OIL If the pOInts
sl10uld
become burnt
or
blackened
they
are
cleaned WIth
a
fIne
hOnIng
stone
or croucus
cloth after WhICh
they
should be
wIped
clean WIth
a
pIece
of
cloth WhICh has
been
dampened
WIth
gasolIne
If the pOInts
are
badly
burnt
they must be
replaced
Braker poInts
must
always
be
replaced
as
sets
Adjusting
the Braker Points
r
I
To
adjust
the braker pomts
turn
the engIne crankshaft WIth the
crank
handle
untIl the braker
IS fully
open
Then loosen the braKer
poInt
fIXIng
screw
Next
by
turnmg
the
adjustIng
screw move
the i late untIl
a
feeler gauge of O 45
to
O 55
w
42
M