1935 Cadillac - GM Heritage Center

89
ELECTRICAL SYSTEM
This lift may be rolled under the car between
the right front wheel and fender after cramping
the wheel toward the right as shown in Fig. 18.
There is sufficient clearance to roll the lift in and
out with the battery on the platform.
With this lift, the battery may be raised
sufficiently to unhook the straps from the frame,
rolled outward to clear the frame, lowered, and
rolled out from under the car with no difficulty
whatever by one man. For installing the battery,
the lift may be used with equal ease to lift the
battery into position, move it over to hook on to
the frame, and hold it in place while the straps are
attached
Because of its small size, this lift is especially
useful in that it may be carried in a Residential
Service Unit or a service car for removing and
installing the battery in an emergency call.
7. Running Engine with Storage Battery
Disconnected
If it should ever be necessary to operate the
engine without the battery connected in the
circuit, the generator must be grounded first or it
will be damaged. One end of the grounding wire
should be connected to the "Gen" terminal on
the current regulator and the other connected to
the ground under one of the control box mounting
screws.
Cadillac or LaSalle car, it is important that T the
battery be disconnected to avoid any possibility
of an accidental short circuit burning out the
windings.
In case of a short circuit, or if the cut-out
relay is closed by any chance, the windings will
receive a discharge of about 30 amperes which is
sufficient to burn them out. This possibility may
be avoided by disconnecting the battery before
beginning any work on these units. If the relay
is closed by any chance, it should be opened
immediately by hand.
The adjustment of the cut-out relay and the
regulator is made as follows:
1. Cutout Relay. With the armature down,
adjust the air gap at the core to .012 to .017 in.,
and the contact opening with the armature up
to .015 to .025 in. Then adjust the spring tension
so that the relay closes at 6.75 to 7.25 volts.
See Plate 27.
2. Current Regulator. Adjust the stop which
hits the fiber bumper, with the bumper barely
touching the stop, to give an air gap between the
center of the core and the armature of .055 to .060
in. Then adjust the stop governing the upward
travel of the armature, so that with the armature
in the up position there is .006 to .008 in. clearance
between the fiber bumper and the stop. The
stop governing the down position of the armature
should be adjusted so that the point opening when
the armature is down is .015 to .025 in.
8. Removing Generator Control Box Cover
The cover to the control box on the generator
is held in place by two screws. When these two
screws are removed, the cover should be removed
by pulling as straight up as possible. If it is
necessary to work the cover off, however, this
should be done by rocking the cover fore and aft,
lengthwise of the car—not sidewise, to and from
the engine.
If the cover is rocked to and from the engine,
there is a possibility of bending the contacts on
the current regulator or the cut-out relay, or
both, preventing the generator from charging
the battery. These contacts extend out almost
to the cover toward the engine and frame sides
of the control box so that the cover, if rocked in
these directions, may possibly strike them. The
cover should be rocked only fore and aft, lengthwise
of the car.
In any case where the generator is not charging
the battery, these contacts should be inspected to
make sure that they have not been bent out of
adjustment.
9. Generator Cut-out Relay Adjustments
Before attempting to adjust or remove the
cut-out relay or current regulator on either the
The unit should then be connected to a generator
(running) and battery and an 11 ampere light
load turned on. The armature spring should next
be adjusted so that the generator output at
approximately 3000 r.p.m. is 14 to 16 amperes with
a hot generator or 19 to 22 amperes with a cold
one. With the lights off this will give from 9 to
11 amperes (hot generator) and 13 to 16 amperes
(cold generator). The cover should be in place
when the voltage and current readings are taken.
10. Adjustment of Air-Tone Horns
The air-tone horns used on both the Cadillac
and LaSalle cars are adjusted for tone at the
factory and ordinarily it should not be necessary
to readjust them unless they have been tampered
with. In any case of poor horn tone, the difficulty
will ordinarily be found to result from one of the
following causes:
Low battery—Make sure that the battery is in
good condition and fully charged, also that the
battery connections are clean and tight.
Poor electrical contacts—Check the contacts to
make sure they are not burned or dirty.
Horn relay faulty—Make sure the relay is
operating properly.