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Buick 40 Series 1948 Shop Manual page 441

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(439)
CHASSIS SHEET METAL
ALIGNMENT
12-5
SECTION 12-8
HOOD AND FRONT END SHEET METAL ALIGNMENT
CONTENTS OF SECTION 1 2-8
Paragraph
Subject
Page
] 2-3
Hood Noises
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12-5
12-4
Preliminary Instructions.
. . .
. .
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.
12-5
12-5
Adjustment of Hood Hinges and
Fasteners-1948 Models
.
. . .
.
. .
.
12-6
12-6
Adjustment of Hood Hinges and
Fasteners-1949 Series 50-70
.
.
.
.
12-10
12-7
Hood Fit Above Radiator Grille. 12-12
Paragraph
Subject
Page
12-8
Hood Spacing at Front Doors and
Cowl
12-13
12-9
Fender Clearance at Fender Ex-
tensions or Doors
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. .
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. . . .. 12-13
12-10
Hood Bearing on Bumpers-Hood
Panel Flutter
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12-14
SERVICE BULLETIN REFERENCE
Bulletin No.
Page No.
SUBJECT
12-3 HOOD NOISES
Squeaks or grunting noises in the hood when
driving over rough road do not necessarily
indicate misalignment of front end sheet metal.
These noises may be caused by metal contact
at some point where clearance should exist or
by worn or dry hood bumpers.
If
the hood squeaks, check with
¥i6"
thick
feeler all around the hood for clearance at radi-
ator
grille,
fenders and cowl.
If
an edge of
metal is making contact at any point where
clearance should exist a bright metal spot will
usually
be
found. Such spots may be depressed
by spring hammering to provide
clearance.
On 1948 models, if the rubber coating is
worn off the spring type bumpers located on
the cowl and under side of hood hinge plates, a
squeak will result from the metal-to-metal con-
tact. Replace worn bumpers and adjust for
proper height as specified in paragraphs 12-5,
step 16 and 12-10,
step
4.
A grunting noise in the hood is usually
caused by
dry rubber bumpers or cowl ledge
lacing. Lubricate all rubber bumpers on fender
rails and cowl with Lubriplate (Finch Refining
Co. No. 110). To correct a persistent case of
squeaking or grunting where hood top panel
contacts cowl ledge lacing, even when lubri-
cated, cement a
¥i6"
thick strip of felt to panel
where the lacing makes contact.
12-4 PRELIMINARY INSTRUCTIONS
a. Introduction
The hood and front end sheet metal parts
must be aligned with each other on every car
to take care of slight variations in form and
dimensions of the individual parts. Sheet metal
parts stamped in a given set of dies will vary
somewhat in form and dimensions due to varia-
tions in the hardness of different batches of
sheet metal, which causes the stampings to
spring in varying amounts when released from
the dies.
The hood and front end sheet metal parts are
properly aligned during the installation at the
factory; however, some re-adjustment may be
required after a car has been shipped or has
been in service for some time. This is because
sheet metal parts may take a different "set"
as a result of vibration and shock incident to
shipping or operation during the break-in
period. In judging the need for re-adjustment
it must be understood that exactly uniform fit
and spacing cannot be obtained on all cars of
a
given model.
The alignment procedures given in this sec-
tion should be followed in the order given
whenever a general alignment of the front end
sheet metal and hood is
required.
IMPORTANT: After any work on front end
sheet
metal ass
embly
which changes fender

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