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Buick 40 Series 1948 Shop Manual page 158

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(155)
CLUTCH,
TRANSM ISSION,
UNIVERSAL JOINT
TRANSMISSION
4-27
To insure proper mating of drive and driven
gears as well as correct speedometer Readings
when making a replacement, it is very neces-
sary to install the
driven
gear assembly speci-
fied in the Master Parts List for the particular
car model and rear axle
ratio.
The axle ratio
is
indicat ed by numbers stamped on the under-
side of axle housing.
The
driven
gear sleeve is threaded into the
transmission rear bearing retainer and
the
speedometer cable is attached to the sleeve by
a threaded sleeve on
cable
casing.
The speedom-
eter gears and driven gear shaft are lubricated
from the transmission. The speedometer cab
le
is
lubricated
at time of installation of casing
and normally requires no further
application
of
lubricant.
The speedomet er cable
casing
must never be
kinked
sharply.
The casing is marked with
paint to designate retaining clip
location.
It is
imp
ortant
to locate the cable casing so that re-
taining
clip is in center of painted
mark,
to
avoid kinking which will cause binding and
whipping of cable
and
result in
noise.
Replacement
and lubrication of speedometer
cabl
es
is
covered
in paragraph 10-68
.
4-25 ADJUSTMENT OF
TRANSMISSION
SHIFT CONTROLS
a
.
Selector Co ntrol
The following steps are
required
to insure
that t
he
shifter levers in transmission make
full
engagement
with t
he
shifter yoke shafts
as
sslected.
See figure
4-31.
1. Shift transmission to ne
utral
and
discon-
nect selector rod from selector control lever.
2.
Inspect rubber insulator in selector con-
trol lever and replace
insulator
if worn. Make
sure that lever return spring is strong
enough
to
pull
selector
control
lever up so that
t
he gear
shift control lever is held
all
t
he
way
down.
3. Move
selector r
od back
and
for th to
make
sure that selector
shaft in transmission
moves
freely.
A bind at this point will
preventret urn
spring from
a
uto mat icaliy
dropping
shif t con-
trol
lever
t
o second speed
side on
shift
from
first to second
sp
eed.
4.
Hold sel
ector
rod to the rear a
s
far as
possible and adjust trunnion until trunnion
pin
is centered in hole in selector
control
lever
insulator.
5.
Connect
trunnion to
selector control
lever
with a
fiber washe r
on each side of insu lator
and
lock with
cotter
pin.
b. Gear Shift Control
The following steps are required to insure
that gears are fully engaged on all
shifts.
See
figure
4-31.
1. Shift
transmission
into second speed and
disconnect lower shift rod from the shift idler
lever.
2.
Inspect for wear and lost motion in rubber
insulators
located in control shaf t
lever,
idler
lever, and shift lever on selector shaft; replace
an
y
worn insulators. If idler lever has
excessive
play on idler
lever
pin
;
replace worn
parts.
3. While pulling forward on lower shift rod
to insure full engagement in second
speed,
ad-
just clevis on shift rod so that when clevis is
connected to idler lever a clearance of
lis"
exists between the shift cont r ol lever housing
and the edge of opening in steering gear
column jacket.
4. With lower shift rod
connected
t
o
idler
lever and
Jock
nut tightened against
clevis,
shift into third speed.
1\
clearance of approxi-
mately
V
s"
should exist
between
control lever
housing and column jacket. Make certa in that
specified
clearance
exists between control lever
housing and
column
jacket in
all
speed
positions.
4-26 REPLACEM ENT
OF
SHI FT CONTROL
PARTS
The
gear
shift control lever, bearing, and
bearing seat may be
removed
by unscrewing
the control lever housing
nut.
Unscrew knob
from lever to remove
housing
nut. A rubber
anti-rattle grommet fit
s
into a groove in the
inner end of control lever. When installing a
new
bearing on control
lever,
the large diam-
eter of bearing must be toward the lever knob.
Before
installing
control lever, coat inner end
and socket in selector rod with Lubriplate.
During installation of lever be careful to draw
housing nut tight so that
shoulder
in nut will
seat against
flange
of
bearing
seat and lock the
seat
in
place.
The control shaft upper bearing and
control
lever housing upper
thrust
wa sh er
may
be re-
placed
by
remov ing
the signal
switch
housing.
The
procedure
for replacement
of these parts
is given
in
paragraph
7-7.
Replacement of selector rod, control shaft,
and lower bearing requires removal of
steering
column jacket. The steering gear should be re-
moved, or at lea st moved down from instru-
ment panel to
provide
proper working
space
and avoid damaging interior of body. Replace-

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