Table of Contents
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43
E L E C T R I C A L
S Y S T E M — G e n e r a l D e s c r i p t i o n — S e r v i c e I n f o r m a t i o n
T h e starting motors used are of the same gen-
eral construction, differing principally in the size
and number of poles.
Those used on the 8-cylin-
der cars are of the four pole type, while those on
the 12-ancl 16-cylincler cars are of the six pole type
Four brushes are standard on all starting motors.
The starting motor cranks the engine through
internal reduction gears.
I he driven gear on the engine is mounted on
the fly wheel on the 345-B, 355-B and 370-B and
on the center c l u t c h d r i v i n g plate on the 452-B.
W I R I N G
The general arrangement of the chassis wiring
is the same in all models.
T h e wires are grouped
in a braided varnished harness ancl wherever pos-
sible are carried in a corner of the side bar.
The stop ancl back-up lamps are connected in
the ignition circuit ancl are protected by a fuse
in the circuit control box.
A feature of the electrical system is the circuit
control box.
T h i s box is located in the rear of
the dash under the cowl ancl contains the circuit
breaker,
the generator cut-out
relay, the horn
relay ancl the fuse for the stop light and back-up
light circuit.
It also serves as a junction box for
the wire connections.
S e r v i c e I n f o r m a t i o n
1.
C o n n e c t i o n s f o r E l e c t r i c a l A c c e s s o r i e s .
W h e n i n s t a l l i n g a d d i t i o n a l electrical e q u i p m e n t , s u c h as
radios, heaters, spot lights, cigar lighters, etc., it is i m p o r t a n t
to m a k e sure t h a t they are p r o p e r l y connected so t h a t they
will not interfere w i t h the n o r m a l operation of the c i r c u i t
breakers a n d at the same t i m e protect the c i r c u i t i n case o l a
short o r g r o u n d .
W h e n
spot
lights o r other
special l i g h t i n g e q u i p m e n t ,
except
cigar lighters a n d radios, are installed, i t is best to
connect t h e m to the N o . 1 t e r m i n a l o n the c i r c u i t breaker,
w h i c h takes the c u r r e n t t h r o u g h the l o c k - o u t breaker.
If,
however, too m a n y s u c h accessories are installed, the breaker
w i l l open due to the excessive load.
In s u c h cases i t is a d v i s a b l e to connect some of the e q u i p -
ment to the N o . 3 t e r m i n a l o n the c i r c u i t breaker, w h i c h is
the feed from the a m m e t e r .
A n y c i r c u i t s connected to the
N o . 3 t e r m i n a l are a c c o r d i n g l y unprotected c i r c u i t s ; t h a t is,
the current for these c i r c u i t s w i l l n o t go t h r o u g h the breakers
at a l l . C i g a r lighters a n d " A " b a t t e r y connections for radios
unless otherwise r e c o m m e n d e d in the instructions a c c o m p a n y -
ing the u n i t s h o u l d be connected d i r e c t l y to the discharge
t e r m i n a l of the a m m e t e r .
2.
B a t t e r y T e r m i n a l C o r r o s i o n
See t h a t the b a t t e r y
terminals are clean a n d free
from
corrosion.
W a r m water, poured s l o w l y over the corroded
b a t t e r y terminals w i l l dissolve the copper sulphate t h a t has
been deposited so t h a t it c a n be brushed off a n d flushed a w a y
easily.
T h e t e r m i n a l s a n d b a t t e r y posts s h o u l d be w i p e d w i t h
a c l o t h saturated
w i t h household a m m o n i a o r a s o l u t i o n of
water a n d bicarbonate o f soda ( b a k i n g soda).
These a l k a l i n e
solutions w i l l neutralize a n y a c i d t h a t m a y be present o n the
parts to be cleaned.
D o n o t a l l o w a n y o f t h e a l k a l i n e
s o l u t i o n t o g e t i n t o t h e c e l l s o f t h e b a t t e r y .
A f t e r the
parts are cleaned they s h o u l d be given a heavy coat of vaseline
or grease to retard further corrosion.
3.
B a t t e r y E l e c t r o l y t e T e s t s
T h e E l e c t r o l y t e ( b a t t e r y solution) s h o u l d be tested w i t h a
h y d r o m e t e r .
T h e specific g r a v i t y as registered b y the h y d r o -
meter s h o u l d be 1.270 t o 1.290 at 60° F . when the b a t t e r y is
fully charged.
A g r a v i t y reading of 1.150 or below indicates
that the battery is e n t i r e l y discharged and it should be removed
from the car a n d recharged.
W h e n e v e r a reading under
1.250 is due to a
temporary
a b n o r m a l d e m a n d for c u r r e n t t h r o u g h excessive use of lights
or starter, the c h a r g i n g rate s h o u l d be sufficient to b r i n g the
h a i t c r y up to a fully charged c o n d i t i o n again.
O n the other
hand, if the current requirements have been n o r m a l a n d it
appears t h a t the c h a r g i n g rate is not h i g h enough to meet the
requirements of the electrical system, the generator
s h o u l d
be adjusted for a s l i g h t l y higher charging rate but not to exceed
the m a x i m u m rate recommended for t h a t generator.
If the
electrolyte tests below 1.225, the b a t t e r y should be recharged
from an outside source.
4.
A d d i n g w a t e r t o S t o r a g e B a t t e r y .
The correct level for the b a t t e r y electrolyte is j u s t below the
b o t t o m o f the filler tubes.
If the l i q u i d comes above
the
b o t t o m of the tubes it m a y be forced u p a n d overflow because
of pressure generated w i t h i n the b a t t e r y b y its " g a s s i n g . "
Inspect the b a t t e r y every 1000 miles d u r i n g the w i n t e r a n d
every 500 miles (or every t w o weeks) d u r i n g the summer, to
m a k e sure the electrolyte is u p to the proper level.
O n l y
distilled water or fresh water k e p t in a glass, rubber o r porce-
l a i n lined container, s h o u l d be vised to replace l i q u i d lost
t h r o u g h e v a p o r a t i o n .
If electrolyte has been lost t h r o u g h overflow or spilling, it
should be replaced b y a c o m p e t e n t b a t t e r y repair m a n .
5.
B a l l B e a r i n g S e r v i c e
W h e n the b a l l bearings are r e m o v e d from the generator or
d i s t r i b u t o r , t h e y s h o u l d be t h o r o u g h l y cleaned b y s p i n n i n g
t h e m in gasoline o r kerosene a n d b l o w i n g o u t w i t h compressed
air u n t i l a l l foreign m a t t e r a n d grease are removed.
The
bearings s h o u l d then be oiled i m m e d i a t e l y w i t h clean engine
oil a n d inspected.
Inspect each bearing b y r o t a t i n g i t b y h a n d w i t h pressure
on the outer race.
If the b e a r i n g feels s m o o t h under pressure
a n d rotates easily it s h o u l d be reinstalled in the car.
If the
bearing feels rough a n d does n o t rotate easily, it should be
replaced w i t h a new one.
Before i n s t a l l i n g the b a l l b e a r i n g in the car, it s h o u l d be
packed solid w i t h a h i g h m e l t i n g p o i n t s o d i u m base grease
( k i s k c N o . 2 2 0 - A , or its e q u i v a l e n t ) , w h i c h l u b r i c a t i o n should
be good for a p p r o x i m a t e l y 15,000 miles.
6.
R u n n i n g E n g i n e w i t h S t o r a g e B a t t e r y D i s c o n n e c t e d
If it should ever be necessary to operate the engine w i t h o u t
the battery connected in the c i r c u i t , the generator must be
grounded first or it will be d a m a g e d .
O n e end of the g r o u n d i n g
wire should be connected to the front b i n d i n g post o n the
cut-out and the other connected to the ground under one of
the cut-out m o u n t i n g screws.
7.
D i c t o g r a p h P h o n e R e p l a c e m e n t
1 he phone units in I Meet wood I m p e r i a l a n d [ o w n cars a r c
installed in m a t c h e d pairs.
11 it. is ever necessary to replace
cither unit, they s h o u l d b o t h be r e m o v e d a n d a new m a t c h e d
pair installed in their places.
In the event of weak signals w i t h p a i r s k n o w n t o be p r o p e r l y
matched, check carefully lor loose connections a n d possible
short's or grounds in the w i r i n g caused by staples o r tacks.
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