Rogue River courier. (Grants Pass, Or.) 19??-1918, 1917-08-03
EXPERT ADVICE FOR
| AUTOMOBILE OWNERS

Sen you toll me the cause of GRIND
ing noise occurring In the difiersntia
of my car and how ! can adjust Il "a
that will not have to buy new gears
This grinding noise may be due IA
foreign matter which has accumulated
In the dIiferential gear housing. Before
doing anything elsc II would be well Ia
flush this out With Kerosene. The dif.
fcrentlal can then be packed with
hcdvy greasc. aud unless the noise II
due to considerable wear II should not
bother you. The probabilities are that
the wear occurs between tAe driving
pinion and the crown gear Any cd
jusiments ni this point should bc made
by repair man.
Ny car has been run about 10000
rnilsa. One Of tho roar cylinders IL
weak, fettino the eorprassion back into
the crank case. lfhs vslyes. etc.. are
tight What might the trouble bs7
Could u be seorsi
Either the piston rings nrc broisen
and otherwise not performing their
proper function or the cylinder IL cut.
II is also possible, but not probable.
that sand hole IN the piston casting
In causing the trouble. To determine
the trouble Il will be necessary to re-
move the cylinder FOR inspection.
What final ratio 10 ecnsidered best on
cars with 80 by 4 in:h tires, and what
speed should hs obtained from this ra,
tlo7
Tho size OF the tires Ia not the oil
important factor In determining the
proper gear ratio. ns there nre many
other points 10 I've considered. such ~
the most cc.clcnt speed OF the motor,
the weight cf The ar. cic. These may
80 alter the proper gear ratio thar the
mere size OF the tires becomes insig-
nlficant IN dcicrmlniDg the final rednc.
ton. With tL!s 10 vicw Il is impossl.
bic to state taat a.sy given llnal reduc.
uon IL l,eat faf Even tire size.
10 there any value IN using chsins on
tho front a. well ~ the c~sr v'hseis OF
q car?
Chains on tue trout wheels facilitate
steering only IN bad going. A chain on
one trout wheel Will answer the pyr.
pose well under ordinary conditions 10
prevent the front wheels from slsidding
Ny car was badly overhsIted about q
year age, a.ser which IL developed q
knock. Hive had II taken up, but soon
after II was 40 bad CO before. would
like advice az 10 how | shouid proceed
TO take the motor out OF tho chassis az
! wish to o"5rhaul II myself, providing
thsrs 10 no machine work to do. Should
= motor have q knock or metallic sound
wher warmed up running fifteen miles
pcr hour with five passengers, . very
little upgradsi Have driven 5000
miles and tho motor is free from car
bon. Have always used medium oil,
winter and sanrs-.
II you want TO take the motor out
OF the chassis you can proceed as fol-
lows: First drain all water from the
cooling system by opening the cock at
the bottom OF the radiator; then dis.
.onnett tba hcso connections bctwcea
motor aud radiator. There are two OF
these. Take or the radiator by un.
fastening the bolts which hold IL to
the frame. Dlsconncct the spark and
throttle controls FROM the bottom of
the steering gear, Loosen the connec-
tion between the end OF the exhaust
manifold and the pipe running to the
muller. Dlsconncct the gasoline feed
pipe from the carburcter. II the car
Is fitted with electric cranking and
lighting, then you will have to remove
the wires from the electric motor aud
generator and also from the horn. Re
sure to tag each wire 80 You will know
where to replace II.
The next step Is to diseugage the
engine unit from tho drive shaft. There
IL means OF doing this back Of the
clutch. Take out the bolts that make
the connection. Finally. remove the
holding bolts which fasten the rear
arms OF the engine to the frame mem
bers and then disconncct the front
support, and by the Use OF an over
head crane or block and pulley arrange
ment the engine should come out OF
the chassis. fM
Ny car has an annoying skip that
cannot account for. Tho timer 10 now.
Tho skip ssems TO bs a delaying firing,
In tho fourth cylinder, judged
by the frser carbonizinl. Tho souni
does not appear whom Tho car stand,
still. no matter how mpoh race tia
engine, but from fifteen mies upward
10 practically continuous, and tho en-
uinc does not now dcvelcp tho power |.
should. Can Il bs duo TO weak vu,vo
spring2 ,Aata f
II Is very probable thnt this skip Is
due to compression leak, Look tu
this source. A weak valve spring
might cause the trouble, but It is not
probable. IA
------ ~
In casting cast iron crank cases 10 Il
possible TO cast a certain amount OF
carbon with tho iron 90 that the cast.
ing will mako q good wearing surface
for q besrinD7 Cast iron agalnst tho
steel Of cam shaft or crank shaftf
II Is possible to cast carbon into
iron. In fact, there is no Iron that