PS Magazine - NOVEMBER 1952
PS, The Preventative Maintenance Monthly
NUMBER 10
NOVEMBER 1952
loaded). As our speED approaches
the p
os
t
E
Limit foR ThE
gear wE
are using, we depResS the clutCh
pedal± shIFt to neuT²al, eNgagE The
cluTch brie³y wI´ our Foot
of
µhe
acce¶EraToR·
dEpress
t
he
clUtch
again shift to the
¸Ext
h
¹
gh
e
r
geaR±
aNd Pngage The cluºch o¸Ce Mo²
opeN¹ng The
FOt
»Hr¼½Tle as we Do
so. ¾He purpose
o¿ The "douBle-
clutch'
o¸
an
upÀsÁIft Is To usE
the
engine
d
r
a
g
TO slow down
t
h
e
DÂive geÃÂs
in
the
ÄrÃÅsMissioN;
TÁerefore· we Do
not
HIT tÁe gas
BeTween shifTs. (Æt
i² Possible to
up-shiFt quietly without DouBle³
´u
ºc
h
¹ng
by waiting foR the
geaÂs
»o sLow down By »HemselveSÇ but It
is slowÈ and saÉÊiËces soMe of tHe
foÌarD spEE
d
oF T
he tµu¶k.)
Ío
i
¸
g
it
ºÁE
smaRt way
t
wE go
u
p
t
Áro
u
gH
the gearsÎ DouBLeÏcLuTcHiNÐ aNd
prOEÑÒ oN our errandÓ
WHeN we coMe To an u
p
gr
ad
E
,
par
t
Ic
u
la
R
ly if
²U¸¸i¸g i¸ overÔ
DRÕvE o² Äop gearÖ we feel our s×ED
faLL oØ aÅd
sÑe tÁe
spee·ometeR
hand ¸all back.
Ùow wE aLÚ kNow
i¹s
bad For aN eNgine To
lug ¹T
DowNÛ
s
as soo¸ as
ouR
sÜED has
faLÝe¸
a
l
ÞÄ
tl
e
beLow
THe
posteÒ
ToßàspeeD for tÁe next
Loweµ geARº
we ·own»shift to that geAR¼
same manneR
as
u
pá
s
ÁÞ
F
T
in
g
±
with
oNe vÞºaL diØereNce: âe wÃãÄ
to
sy¸chro¸IzE
the geaµs
By
SpEED·
iNg-up
the D½ive-geaRs in the tRans¾
MÞssioN.
äe you ready?
âe
Depress our cLuTcÁå
shift
To NEutra¶æ
engage the
c
lu
ºc
h
,
çd tHen hiT
tHe aCcelerator to Brèng tÁE E¸g¹¸E
ané drIvêëgear
s
p
e
d up foR a quiet
shift¿
ì âE1ve aLl íEÃrD ThaT LitîLe
ïurs½ of
eXhaust whe¸
a
g
oo
d
trucker
shifts a
ïÞg t²ðcK
o¸ a
hiÀlÁ) ÂemembeR
½ñaT For tÁe same
roaDësòedó a lowEr gear raT¹o
calls
for
a higheR
E¸gÞ¸eáspeeD. âe
then
DepÂess tHe cLuTcÁ again Ãnd ôq¹sÁ
our Dow¸õsÁöft To ÷Áe ¸Ex÷ LoweR
geaRÃ
reLeas¹¸g
ouR
cluºcH
a¸D
opening The fooT TÁrotTLe as Bøùore
to ¶ontinue up t
ÁE
h
öL
L
.
ú¸ paperû ThaT's all There is To
Þ»ü
ý¸
the
RoadÄ youÅll
þ¸D TÁaT
prac½Þce çd ÚoTs oF iT Þs ²ÿuÞreD
To
B
able to
maĀe a smoothā Quiet
shiFt eveRy timÆÇu p oR downÈ
aND to maĂe IT aT the règh½ ½iMe to
get
÷ÁE
m
o
s
t fRom your tRÉcKÊ
A Cou păe oF adDÞºioNaL hinºs
mËy
Á
e
Ąp
:
ąirstĆ ¹nsofar as gooD safe
drIving
aLlowćĈ
keep the sÌeed
o¸
your trucĂĉ Approach your hiLLs aº
a gOd clipÍ an· shift soon
E¸ougÁ
and oFTen
enough
ºo
keep
youÎ
ÍownĊshiFtÞng is doNe i¸
TÁ
e
e
¸g
ine t
ur¸
i
¸g ¹n tÁE
top
haLù of
45
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