Removal Of Generator; Correcting Starter Solenoid Difficulties; Solenoid Plunger Adjustments - Cadillac 1937 LaSalle VVI Information

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E L E C T R I C A L
connect the ammeter to the regulator as shown
in F i g . 14. T u r n on the lights and gradually
increase the speed of the generator u n t i l the output
remains constant. U n d e r this condition, the
output of the generator will be the amount for
w h i c h the current regulator is adjusted.
Note: It is not absolutely necessary to turn on
the lights when checking the current
regulator but, in case the battery is fully
charged, it will prevent excessively high
voltage within the electrical system
while making this check.
The current setting is adjusted by bending the
lower spring hanger. Increasing the spring ten-
sion increases the current setting and decreasing
the tension will decrease the current setting.
The air gap, point opening, etc. are adjusted i n
the same manner as described under Voltage
Regulator. Also see specification table.
Gap Between Fibre Bumper and Contact
S p r i n g P o s t — W h e n the armature is up, check
the gap between the fibre bumper and its stop..
A d j u s t the upper armature stop to obtain the
correct gap. T h i s gap should be .008"-.013".
Contact Point Spring Tension — Contacts
should be adjusted to meet squarely and w i t h a
pressure of 3 ½ to 6 ounces. (Check pressure at
the instant that the points separate, using a spring
scale of the type used for checking distributor con-
tact arm tension). A d j u s t this pressure by slightly
bending the contact spring c a r r y i n g the upper
contact. •
7. Removal of Generator
The generator on series 37-50, 60, 65, 70 and
75 cars is located in the Vee of the engine and
can be removed as follows:
1. Raise hood (left side preferable).
2. Disconnect a l l wires leading from generator.
3. R e m o v e generator supporting bolts.
4. L o w e r generator and remove belt from
generator pulley.
5. R e m o v e air cleaner bottom cover and
brace. (This is now held by a wing nut on top
of air cleaner).
6. Loosen clamp holding air silencer and cleaner
assembly to the carburetor and shove the assembly
to one side, m a k i n g room for the removal of the
generator.
7. R e m o v e generator.
T o replace the generator on series 37-50, 60,
65, 70 and 75, the reverse of the above operations
are followed.
The generator o n series 37-85 and 90 is chain
driven and is located on the right hand side of
the engine. T h e water pump drive shaft is con-
nected to and driven b y the armature shaft.
The generators on series 37-85 or 90 cars are
removed as follows:
1. Raise hood (right side).
2. R e m o v e water pump drive shaft.
3. Disconnect wires leading from generator.
4. R e m o v e generator breather pipe and horn.
(The breather pipe is screwed into the bottom of
the generator a n d can be removed from under-
neath the side-pan by getting a hold of the longer
side w i t h an adjustable wrench and screwing out).
5. Remove b o t t o m bolt which, together with
two nuts on top, holds generator.
Note: T o remove this bolt, a rs" socket wrench
(about 1 ft. long) with a sliding " T " is
used. O n series 37-85 the carburetor must
be removed in order to use this wrench
and remove the bolt.
6. Remove two retaining nuts at top.
7. R e m o v e generator b y pulling straight back
u n t i l it is free from driver.
The reverse operations are followed when
replacing a generator on series 37-85 and 90 cars.
S T A R T I N G C I R C U I T
8. Correcting Starter Solenoid Difficulties
The solenoid starter is so designed that after
the generator is charging, there is no possibility
of the starter engaging while the engine is running,
even if the starter button is accidentally depressed.
There are two conditions, however, that m a y cause
accidental starter engagement.
1. T h e idling speed m a y be so low that the
generator is not charging. In order to assure
against starter difficulties, the idling speed should
always be set high enough to keep the ammeter
indicating on the "charge" side.
2. There m a y be a short in the wire from the
starter relay to the generator regulator. T h i s
short m a y occur at the relay cover or anywhere in
the wiring harness, and must be located with a
test light. In case of a "floating ground" it m a y
be necessary to move the wiring harness at various
points to produce the ground.
In case the starter engages as soon as the ignition
is turned on, either the starter switch button is
sticking or there i s 4 a short i n this circuit.
9. Solenoid Plunger A d j u s t m e n t
The only adjustment on the starting motor
assembly is that of the solenoid plunger to secure
the proper mesh of the starting pinion w i t h the
flywheel ring gear. T o make this adjustment:
1. Remove the starter from the engine.
2. R e m o v e the p i n i n the upper end of the
shifting yoke.
3. P u s h the solenoid plunger all the way in the
solenoid and move the pinion all the way out to
what would be the cranking position if the starter
were mounted, taking out a l l backlash in the
shifting mechanism.
4. M o v e the pinion y§ inch back toward the
disengaged position and adjust the stud in the
solenoid plunger u n t i l the pin m a y just be inserted
at the forward end of the slot. See Plate 65.