Richmond times-dispatch. [volume] (Richmond, Va.) 1914-current, 1918-04-14
|PL|F|ED LESSONS IN
PARE OF AUTOMOBILE
riich Describes Caro- and Ordi-
nary Troubles of tho Start
ing Motor.
ERE TO LOOK FOR TROUBLE
Frt Points Out Places Where
lmc Slight Defect or Displacc.
Pnt Will Prevent Machinery
fom Eunctioniny Properly.
AUTO LESSON NO. IS.


lie or the motor than to the motor
The motor seldom gets out OF
and, when It does. the trouble
Ially due to II being flooded with
grease, which has worked In
gh the driving gears by which the
ls connected TO the nywhecl: or
10 contact brushes sticking, and
pr making contact with tho COM
tor.
is best to use q light oil. such ~
i. for tho fabrication OF tho cleo
units, AZ the regular mineral oil
for other parts will thicken and
Pnizo and so cause q ehort-circuit.
post units two or three drops of
Pr 1000 miles will be enough. You
d. however. consult your instruc-
book IN regard to this. - there
Few systems in which moro oil
d DO used. Where the motor is
-cfrcuited because Of too much or
heavy an oil. It must be taken
and cleaned.
you arc sure that your battery
nrsed (you can generally deter
this by seeing II tho lights will
or horn blow), and that there is
hort-circuit or disconnection OF
wires connecting the battery and
r. and tho latter fails to crank
engina, then ono OF the brushes
be stuck. They can usually be
+. They can usually DO easily got
y simply removing the cover over
and pressing the brushes down
tho fingers. which will generally
dy tho trouble. often permanently.
Z For SHORT-CIRCUITED
OH LOOSE WIRE FIRST
to starting trouble with the out
units; OF course. We FIRST have TO
for short-circuited or loose wire.
starting motor wires are easy to
al they are always very heavy
omp arison to other wires on the
It. after tho wires, tho trouble
DO In tho switch. and hero will
FOUND much OF starting trouble.
contacts in the switch arc almos,
Finbly OF tho spring typo, and the
g will often weaken and set" in
position as to not mako con-
They can usually be made TO
contact by pryinE them out.
n this Is done, tho grounded wire
he battery should be nrst d!scon-
rhaps moro trouble IS experienced
tho seif-start!ng motor, when
pping on tho starter PEDAL. than IN
other way. Very often the pedal
not go In, or Will go IN part way
then stick. This is not duo to a
in tho motor. battery wires.
TO tho gears, by which tho motor
pnnccted to tho engine. SO as 10
k IT,
hen the starting motor IS not IN
alton. Il IS disconnected from the
ne. When 1t IS desired to start
engine, tho foot is pressed on the
Ling pedal, which Will first cause
lall driving pin!on. or gear. to be
I'd Into mesh with 4 largo gear on
fly wheel. and when this Is accom-
led. tho switch makes contact and
motor starts and 80 makes tho Ry-
FL revolve. thus cranking tho en-
Fad OF coming into tho spaces be-
strike tho teeth OF Il. and SO no
er how hard you press on the
Ter pedal you cannot move it. TO
come this possibility. the pinlon
ade TO slowly revolve as Il moves
mesh with the fywhcel gear.
|srcs A. b. c and D show the steps
[Igh which the switch and pinion
& pass before the motor Will oper-
figure A tho position OF the
| en- and pin!on &c" arc shown when
car Is Idle. Figure y shows the
step. Here the starting pedal
been pressed down slightly. SO
tho portion p OF the switch just
cs contact In this position the
emit from the battery must pass
ugh the resistance, r. and so the
ent Is cut down and the motor,
Fly and with little power. II now
pinion be moved further IL will.
kuso It is revolving. find its way
mesh with the gear OF the NY
lei, and tho teeth cannot stop while
king against one another. Thus
como to the second step. where
plnion is brought into mesh with
|nywhecl gear, as shown In figure G.
70 can now take tho next step.
|ch Is the pulling OF the p!nion into
mesh with tho fiywhSel gear, and
ling tho switch make direct con-
], cutting out the ?sistancc. r. as
|wn In figure D. You will notice
now the current can go from the
|ery directly across the switch.
bout going through r, and so 10
motor, which will revolve with
|cient power to drive the i'ywheei,
) cranking the engine.
DUBLE DUE TO SWITCH
FAILING TO MAKE CONTACT
ost OF the time when tye pedal
not go down because OF tho teeth
ing, the trouble is due to the switch
making contact with the resistance.
,hown In figure B. The remedy for
is to pry in the switch blades a
UGH trouble OF this kind Is also
to the plnion coming into mesh
, the fywheel gear. as shown in
re c. before the switch has made
TACT with the resistance. There Is
n means for adjusting this. and
making the adjustment such that
above steps are gone through in
proper order, Il sclf-starter which
: not work at times can be made to
X properly all the time.
ccausc Of tho great amount OF trou-
aa explained above. a device known
the "Bcndix Drive" has been
1Cht out In the last few years, and
asst being adopted universally. In
shown in figure l., the pinion, in
ID Of being positively connected TO
motor, is threaded on the inside.
Is set on n threaded shaft. When
switch is thrown on the motor will
,lve quite fast, and so make the
.adcd shaft rcvolvc. The pinion.
ever. because OF its weight. will
want to rcvolve. and so will be