Hudson 63 1936, Mechanical Procedure Manual

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MECHANICAL PROCEDURE MANUAL
SECTION 6
Page 15
BATTERY
The battery on 1934-35 and 36 models is located under the floor
of the car and can be reached for inspection or removal by turning
back the left side of the front floor mat and removing the two screws
holding the cover in place.
The battery on 1937 models is located just back of the radiator on
the left side of the car and can be reached by raising the hood.
The battery should be kept charged at all time3 to preserve its life.
The specific gravity should not be allowed to go below 1225. If the
battery is left in a low state of charge sulphation of the plates will
take place and the battery capacity will be reduced.
The cell plates should be covered with electrolyte at all times.
Distilled water should be added as required to keep the plates cov-
ered.
A battery when taken out of service will hold its charge longer if
stored in a cold place. Stored batteries should be tested monthly and
recharged if the specific gravity is below 1225.
To prevent corrosion of battery terminals and connections, apply
a coating of vaseline over the battery posts and straps and replace the
terminals securely.
If corrosion occurs, clean posts and terminals with a soda solution.
When using the soda solution be sure the sell caps are in place and
be careful to prevent the soda from entering the cells. Flush off well
with water and dry the top of the battery.
Road dirt on top of the battery moistened with battery acid will
form a conductor and "short" the battery to such an extent to permit
it to discharge slowly. Always keep the top of the battery clean.
Remove acid with soda solution.
Battery Testing
Battery testing is covered under Engine Tune-up, Section 3.
Battery specifications are listed in the Specification Section No. 23.
GAUGES
Electric Gauges are standard equipment on all models as follows:
1934—Gasoline Gauge—All models
1934—Water Level Gauge (Radiator)—All models
except KS Terraplane
1935—Gasoline Gauge—All models
1935—Water Level Gauge—All models except G Terraplane
1936—Gasoline Gauge—All models
1936—Water Temperature Gauge—All models
except 61 Terraplane
1937—Gasoline Gauge—All models
1937—Water Temperature Gauge—All models
The Electric Gauge consists of two units, the Sending Unit and the
Receiver Unit. The following diagrams show the major parts of
each unit and the principle of operation is as follows:
When the gasoline or radiator upper tank is empty the two contacts
in "Tank Sender" (Figure 616) are
just touching. With the ignition switch on, current flows through the
circuit warming up the heater wires which causes the bi-metals in
both the Sender and Receiver to bend. This bending of bi-metal in
"Tank Sender" opens the contacts and circuit is broken—the heater
wire then cools and the bi-metal returns to its former position.
Contact is then again made and the procedure is repeated at the rate
of approximately once per second.
Since both heater wires are in the same circuit, a similar slight
bending of the bi-metal in the Dash Receiver occurs which is just
sufficient to make the needle register zero.
When the tank is filled with gasoline, however, the action of the
float and cam as shown (Figure 617) pushes the grounded contact
against the insulated bi-metal contact, bending the bi-metal in the
Tank Sender. Now if the ignition switch is on, the action described
in the preceding paragraph occurs but
Figure 616—Gasoline Gauge—Tank Empty
Figure 617—Gasoline Gauge—Tank Full