Buick 40 Series 1948 Install guide

1948-1949 BUICK SHOP MANUAL
GROUP INDEX
GROUP ..
0< 1
NO.
SUBJECT
1948-1949
. NO.
0
INTRODUCTION -
0-1
BUICK
GENERAL INFORMATION
LUBRICARE AND
1\-\
SHOP
MANUAL
BEARING SERVICE
2ENGINE
2-1
~
1948 Series 40 -50-70 and 1949 Series 50-70
3ENGINE FU
EL AND
3-1
EXHAUST SYSTEMS
4
CLUT CH, TRANSMISSION,
4-1
UNIV ER SAL JOINT
5
REAR AXLE ASSEMBLY
5-1
6
CHASSIS SUSPENSION
6-1
This shop m anua l fu rnishes service information on
the 1948 and 1949 model Buicks shown above. The S
TEER ING GEAR
informatio n app lies equally to all models of both years
7AND
TIE RODS
7-1
except where adifference is indicated by specifying a
particular model or series.
A su
mmary of th e.fea tur es which ar e new for 1949 8
BRAKES
8-1
is given on page 0-6 for quick reference.
This manual does
not give service i nf or matio n on
Dynaflow Drive except
for ex te rna l a dju stm ent swhich9
FRAME AND BUMPERS
9-1 affect th eservicing of other uni ts. Compl et e in forma -
ti on on Dynaflow Drive is given separately in the
"1948 Buick Dynaflow
Transmission Ser vice Manual"
(B.P.S. 1.3
0).
10
ELECTRICAL SYSTEMS
10-1
ATTENTION IS DIRE CTED TO THE INTRODUC-
TION, page 0-1, which describes the completely new
a
rrang ement of th is manual and how it should be used
11
RADIO AND OTHER
11-1
to locate desired informa tion .
ACCESSORIES
For complete service i nform ation, reference also
should be made to B.P.S
.b ulletins which are issued to
dealers
whenever product changes are made, or sup-
12
CHASSIS SHEET METAL
12-1
plement ary service information seems necessary.
SERVICE DEPARTMENT 13
BODY
13-1
BUICK MOTOR DIVISION
GENERAL MOTORS CORPORATION
FLINT 2, MICHIGAN
14
ALPHABETICAL INDEX
14-1
B .P .S. 1 .31
LITHO IN U .S .A .

(1)
1948-1949 BUICK SHOP MANUAL INTRODUCTION 0-1
GROUP 0
INTRODUCTION-GENERAL
INFORMATION
CONTENTS OF GROUP 0I
Subject
Introdu ction ..... . .
1948-1949
Car Mod els .
General Sp ecifications .
Car and Engine Serial Numbers . .
Page
.. . 0-1
0-3
0-3
0-3
Su bject Page
Product Report ............. 0-4
Manufactur ers Warr anty. ........... 0-5
New Features of 1949 Seri es 50-70 0-6
The arrangement of subject matter within
major groups also ha s been changed, with the
objective of making all information easy to find
and easy to use. When the grouping and general
arrangement are understood it will be evident
that the manual is largely self-indexing, so that
reference to the alphabetical index is reduced
to a minimum.
IN TRODUCTION
This 1948-1949 Buick Shop Manual departs
from the past practice in regard to the contents
of major groups and their numerical order in
the manual. The purpose of this change is to
bring related subjects more closely together
and in accordance with the usual methods of
performing service . operations, and conse-
quently to present information in a logical and
easily understood order.
1. GROUPS. The manual is divided into the consecutively numbered major Groups shown on
the preceding title page. To locate the first page of a Group, bend the manual until the black tab
on first page of group can be seen in line with the Group title on title page.
The first page lists the contents of the Group.
2. SECTIONS. Large Groups are divided into appropriate Sectionsas shown on first page of the
group .Sections bear the Group number and letters A, B, C, etc., in alphabetical order.
The first pag e of each Section lists the conten ts of section.
3. PARAGRAPHS.
Each Group is divided into appropriate Paragraphs which are numbered
consecutively within the Group, whether or not th e group is divided into sections.
Paragraph titles and page numbers are listed on the first page of each Section if used, or on
first page of
the Group if sections are not used.
4. SU
B-PARAG RAPHS. Where necessary for clarity, or distinction between models, Paragraphs
are divided into appropriate ly titled Sub-paragraphs. These are usually lettered in alphabetical
ord er within the paragraph.
5. PAGE AND ILLUSTRATION NUMBERS. Pages and illustrations are numbered consecutively
within each Group. The n umber co nsists of the Group number followed by the Page or Figure num-
ber. Page numb ers are printed in the upper outer corners of all pag es. The small folio numbers at
inner edges of pages are for pri nter's use only and are not used for reference in the manual.
6. CROSS
REFERENC ES. All re fere nces to info rm ati on in other parts of manual are made by
Paragraph Numb er, to avoid the necessity of fir st referring to the alphabetical index for location.
Paragraph references are usually given in parentheses, for example: (par. 6-15) refers to the 15th
paragraph in Group 6, "Chassis Suspension".
7. SERVICE BULLETIN REFERENCE. Space is provided on first
page of each Sect ion (or single sec-
tion Group)
for insertion of a reference to any B.P.S. bulletin which relates to the subjects covered
by
the section. All B.P.S. bulletins issued to Nov. 1, 1948, are covered in the manual and references
to these are unnecessary.
8.
SPE C IA L TOOLS. Unless other wise indicated, all special tools identified by tool numb ers in
the manual are available through Kent-Moore Organization, Inc., General Motors Building, Detroit
2, Michigan.

0-2
CHASSIS
1948-1949 BUICK SHOP MANUAL
(2)
..
..
..
D
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U
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..
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II>

(3)
Mode'
1948-1949 BUICK SHOP MANUAL
194 8- 1 94 9 CAR MODELS
De.lgnation
MODELS
Wheel Ba.e
1948 1949
0-3
lIIu.trated
on Page No.
41
46-S
51
56-S
56-C
59
71
76-S
76-C
79
SPECIAL-SERIES 40............................................... 121"
6-Passenger Special 4-Door Sedan .
6-Passenger Special Sedanet .
*SUPER-SERIES 50 .. . . . . .. . . . . .. . .. . ..... . . .... . . . . . . . . . . . . . . . . . . . . 124" 121"
6-Passenger Super 4 -Door Sedan .
6- Passenger Super Sedanet .
6-Pa ssenger Super Convertible Coupe , ..
6 -Passenger Super Estate Wagon
"Dynaflow Dr ive optional on 1949 models .
**ROADMASTER-SERIES 70................................... .. 129" 126"
6-Passeng er Roadmaster 4 -Door Sedan .
6 -Passenger Roadmaster Sedanet .
6-Passenger Roadmaster Convertible Coupe .
6-Pa ssenger Roadmaster Estate Wagon .
** Dyn aflow Dri ve Optional on 1948 models and standard equ ipment on 1949 m odels.
2-52
2 -52
4-42
6-34
7-12
8-22
9-10
10-120
11-38
GENERAL
SPECIFICATIONS
Serle. 40 Seri e.5 0S.r
ie.70
Item.
1948 1948 1 94 9 1 948 1949
Wheelbase . ..... .. . . ... .. . ... .. .. .... .. . . .. .. . .
12l" 124" 121" 129" 126"
Tread-Fron t ... ....... .. .. .. . .. .. ... ..... . .. ..
58W 59 78" 5978" 59
78 "59 78 '
Tread- Rear . .. . .. ... ....... .... . . .. . ........ .611% " 62Yt6"
62%" 62%" 62%"
Over -all Leng th of Car, With Bumper s . .. ... .... . . 207 }1"
212%" 209 Ys"
217 78 "214
78 "
Over -all Wid th of Car . . ... . .. .. . . .. . . ..... .. .. .77% " 79" 78}1" 79" 78 }1"
Over -all Height , R oof to Road , at Curb Weight . . . . 662Va2" 65"
651~~
65Vi6"
62 %"
Front Ov erhan g (C.L. of Wheels to Front of Bumper )35W 36}1" 36
1\.{6"
36}1" 361\.{6"
Rear Overh an g (C.L. of Wheels to Rear of Bumper )50 %" 511%"51
1\.{6"
51
1%"
51
1\.{6"
Ground Cl eara nce at:
Front Car Bum per . . . . .... ... ... ... .. .. . . . . 101\.{6" 10 %" 105~"
11W 11'!{6"
Steerin g T ie R od . . . . .. .... .. ......... .. ... .
7 ~6 "
7%" 7%"
8116" 8 116"
Lower Cr ankc ase . . . . .. ... ..... .. .... .. ..... . . . . 7% " 7%2"
7 ~ 32 "
8W 729/ "
.'32
Flywheel Lower Housing ... . . ... . ... .. .. .. . . .. ..
7 Ys" 7 Ys" 7
%"
7% " 71%'2"
Frame Side Rail , Lowest Point ........ .. ... .. . . . . 6 W 7" 7
1§.{6"
7Ys" 71
Yt6"
Rear Axle Housing , Center ....... .. ... .. . .. ... . .
72 ~ "
8§{6"
1 %" 9W 9W
Rear Car Bumper ... . ... ......... .... . .... . ... .1178"
11 ~ "
1 ~ 1%;" 113 ~ "
12 2 ~"
CAR A ND ENGINE SERIAL NUMBERS
The car s eri al number is on a plate attached to rig ht side of cowl, under the hood, and also on
left front body h ing e pill ar. Th efirst digit of se rial num ber indicates wher e car was built. "I "indi-
cates Flint, "3" indicates Linden, "6" indicates Atlanta, etc.
Duplicate Serial Numb er Plate.In order to obtain a new serial number plate, when the original
plate is mutilated, lost or stolen in the field, it will be necessary to submit a notarized affidavit on
a
form which will be furnished upon application to the Servce Department, Buick Motor Division,
Flint, Michigan.

0-4
PRODUCT REPORT 1948-1949 BUICK SHOP MANUAL
(4)
The engine serial number is stamped on a boss on right side of crankcase below push rod cover.
Engine serial numbers have no Flint or other assembly plant identification; however, they carry
suffix "4", "5", or "7" to indicate use in Series 40, 50, or 70 respectively.
A
stamped dash mark (-) about 1,4." long directly following the engine number indicates a
.010" O.S. production
standard engine.
PRODUCT REP ORT
Product Report Form S-75~-4 is furnished to all Buick Dealer Service Departments to enable
them to
report product difficulties.
These
forms should be filled out in duplicate and forwarded to Zone Offices each week. Zone
offices
forward the reports to the factory. The factory Engineering and Inspection Departments
analyze the Reports and use same to improve product quality.
Unless a
Product Report is made on each service difficulty and each difficulty reported each
time
it occurs, it is impossible for the factory analysis to be correct.
Dealer Service
Department cooperation in supplying reports is appreciated by the factory.
Service
Departments are repaid indirectly for time spent on these reports in that it enables the
factory to build the product so as to require the minimum of service when cars ar ereceived by
Dealer Organizations. .
BUICK 8 ·758 ·.
~ ' III "' T& DU • •• A . :11 00 Ilol • •• (1 PRO
DUC T
REPORT
DEALER
DATE
ZONE
COMP LAINT -DO NOT LIST MO RE THAN ONE TYPE ,
(STA TE CAUSE IF POSSIBLE)
W H AT WAS T H E REMED Y (IF A NY)
DO YOU HEED AO olTlONAL SERVICE I N F O R M A T I O N ON T HISl
-
E NTE R BE L OW TH E INFOR MAT ION ON EACH CAR
ON WHI CH THiS COND IT I O N
HAS
BEEN FOUND .
SERIAL NU MBE R.
BOD Y
MODEL A N D
NU MB ER S
SERIES MIL EAGE
DES IGN ATION
~
-
.-
--
-~
-
..........
-
~
SIGNED
DETA ILED DESCRIPTION OF BOTH CO MPLAINT AND CORRECT ION W ILL
DEF IN ITE LY ASS iST THE FACTORY IN IMPROVEMENT OF THE ,.RDDUCT .
ON ENGINE
OR CARBURETOR
R E PORTS
PLEASE IND ICATE
MAKE
O.
CARB URETO'" AND ENG INE N UMBER .
USE OT HE R 8 'DE FO R DETA ILS W H ER E NIECE.SARY
.:

(5)
1948-1949 BUICK SHOP MANUAL
MANUFACTURER 'S WARRANTY
WARRANTY
0-5
It is ex press ly agreed that the re are no warranti es, expressed or implied,
made by
either the Dea ler or th e Manufacturer on the Buick motor vehicles,
chassis
or parts furnished he reunder, except the Manufactur er's Warranty
aga inst defective materials or workmanship as follows :
"The Manuf acturer warrants each new motor vehicle, including all
equipment or accessories (except
tir es) supplied by the Manufactur er,
chassis or
part manufactured by it to be fr ee from d ef ects in material
and w
orkmans hip under normal use and service, its obligation under
this wa rranty being limited to making good at its factory any part or
parts ther eof wh ich shall, wit hin nin ety (90) days aft er delivery of
such
veh icle to the original purchaser or bef ore such vehi cle has been
driven 4,000 miles, whichever event shall first occur, be returned to
it with transportation charges prepaid and which its exam ination shall
disclose to
its satisfaction to have been thus def ective; th is war ranty
being expressly in lieu of all other warranties, expressed or impli ed,
and all other obligations or liabilities on
its part , and it neither assumes
nor authorizes
any other person to assume for it any other liab ility in
connection
with the sale of its vehicles.
"This
warranty shall not apply to a ny vehicle which shall have been
repaired or altered outside
of an authorized BuickService Station in
any way so as in the jud gme nt of the Man uf acturer to affect its stability
and reliability, nor which has been subject to misuse, negligence
or accident.
The Manufacturer has reser ved the righ t to mak e ch an ges in design or
add an yimprovements on motor vehicles and chassis at any time without
incurring any obligation to install same on motor vehicles and chassis
previously
purchas ed.

0-6
1949 FEATURES
1948-1949 BUICK SHOP MANUAL
(6)
NEW FEATURES OF 1949 SERIES 50-70
For ready campa rison between 1948 and
1949 models, the following summary lists the
new features of the 194,9Series 50-70 on which
information is given in the indicated para-
graphs of this manual. New features which are
apparent on inspection or do not require serv -
ice
information ar e not listed.
Afew of
the new f eatures were used in
the last cars of the 1948 model pro duction.
These
are included in the summary with proper
model identification.
. ~
Group 0, General Specifications.
1949 Series 50 wheel base is 121" and overall length is 2093 /8".
1949 Series 70 wheel base is 126" and overall length is 214%" .
Group 2, Engine.
Series 50 Dynaflow engine H.P .=120; Compression Rat io =6.9 to 1; Com pr ession Pressure
(cranking) =118 lbs.ysq.in.
Replaceable connect
ing rod bearings used after approx imat ely the first 5000 1949 engines
(par. 2-5 &2-21).
Hydraulic valve lifters used in last production 194,8Series 70 and all 194,9 Series 50-70 Dyn a-
flow engines. Includes new camshaft, push rods, rocker arms and ball studs ( pa r. 2-2, 2-15,
2-17) .
New oil filter and diffe rent element. Filter outlet piped to rock er arms to supply filte re d oil to
valve mechanism
(par. 2 -6).
Cooling system capacity of Series 50 Dynaflow cars increased one quart .
Group 4, Clutch, Transm ission, Universal Joint.
Dynaflow Dri ve is standard on Series 70 and optional equipment in Series 50.
Rubber boot used to re place torque ball outer retain er pack ing ( pa r. 4-20 &4-28) .
Group 5, Rear Axle Assembly.
Rear axle ratio for Series 50 Dynaflow is 4.4 to 1 (par . 5-1).
Starting in last 194, 8models and continued in 1949, two roller beari ng s support rear end of th e
pinion (par . 5-2) .
Strut rods attached to spr ing seats by 3 bolts, same as 1948 Ser ies 40 (par. 5-29).
Group 6, Chassis Suspension.
Eccentricity of upper pivot pin increased to increase camber adjustment (par . 6-16).
Model 79
ti re size increased to 8.20"-15" (par. 6-1).
Front and rear spring tr im dimensions changed ( par. 6-17 &6-20) .
Rear spr ing s moved to spring seats on rear side of axle housing, same as 1948 Seri es 40
(par 6-3) .
Group 7, Steering Gear and Tie Rods.
Series 50 steering wheel can be raised from production setti ng , b ut not lowered. Series 70
wheel
can be raised or lowered (par . 7-5) .
Last of 194,8Series 70 stee ring gears have ratio of 23.6 to 1; sam e for 1949 (p ar. 7-1 ).

(7)
1948-1949 BUICK SHOP MANUAL
Group 9, Frame and Bumpers.
New frames (par . 9-1 and fig. 9-6 & 9-7).
New bump ers (par. 9-5).
1949 FEATURES
0-7
Group 10, Electrical.
Generator capacity increased (par. 10-24).
New generator regulator with screws for adjusting points (par . 10-25, 10-29, 10-30).
New distributor, eliminating breaker plate ball bearings (par. 10 -51).
New lighting switch with rheostat for controlling instrument panel lights. Instrument panel
light switch eliminated (par. 10-53).
New front parking and direction signal lamps. New tail ,stop, and signal lamps (par. 10-56).
Stop
lights protected by fuse instead of circuit breaker (par. 10 -58).
New mounting of map light switch (par. 10-57).
Luggage compartment light is independent of taillight (par. 10-57).
New circuits for direction signal lamps (par. 10-62).
Borg or New Haven electric clocks used. Reset and regulator knobs are on face of clock (par.
10-66).
New wiring circuit diagrams. Central fuse block (par 10-69).
Group 11, Radio and Other Accessories.
New radio, with different procedure for setting push buttons for des ired station (par. 11-13).
Installation of antenna lead-in wire changed (fig. 11-7 &11-1 0). New alignment procedure
(par. 11-5, h). New parts list (par. 11-7).
Heater and defroster installation is new. Same blower for heat er and defroster ,located in
outside air intake duct (par. 11-8).
Windshield washer controlled by a button in center of windshield wiper control knob (par.
11-9). Hose connections changed (fig. 11-34).
Back-up
lamps mounted in rear of body (par. 11-10).
Group 1 2, Chassis Sheet Metal.
New cast aluminum grille (par. 12-2).
New hood hinges and fasteners. Fasteners cable controlled from inside body (par . 12-2 & 12-6).
New rear wheel shields (par. 12-2 &12-15).
Fender extensions formed in door panels, eliminating separate extensions.
Group 13, Body.
A new layout of body mountings is used on 1949 models. Compare figures 13-2 through 13-5.
New
"U " type door locks and strikers which also ser ve in place of th edovetail bumpers and
wedge plates pr eviously used. Door outside handle an chor ed in lock by a set sc rew . Rear door
locks
may be set for "free-wheeling" (par. 13-6).
New spring-loaded counterbalancing door checks (par. 13-7) .
Door
weathers trips held in place along bottom section by scolloped flanges crimped over weath-
erstrip, in addition to cement (par. 13-8).
Front door hinges are box-type with gooseneck straps bolted to door innerpanels. Rear door
hinges
are concealed butt-type similar to 1948 front door hinges (par. 13-10).

0-8
1949 FEAlURES 1948-1949 BUICK SHOP MANUAL
(8)
Rear compartment lid weatherstrip composed of two sections. Top section is cemented into
gutter along top of opening. Side section is cemented to sides and lower edge of compartment (par.
13-11).
Rear compartment lid hinges, on closed bodies, have springs to hold lid in raised position, elimi-
nating the lid supports previously used, (par. 13-12).
Windshield
wiper cable tensioners are spring-loaded self-adjusting type. A new procedure and a
special tool
required for removal of windshield wiper transmissions (par. 13-14).
Windshield
glasses are curved and are set in a new type rubber channel which permits replace-
ment of glass from outside of body and without removing garnish molding. Special tool required for
installation of glass in rubber channel (par. 13-16).
Back window glass is mounted in same manner as windshield glasses except that center division
is
not used (par. 13-17).
Rear door ventilators are manually operated and are held in set position by a friction mecha-
nism. Ventilators have an inside locking handle (par. 13-19).
Door window
garnish moldings extend along front, top, and rear sides only; the belt finishing
panel replaces lower section of
garnish molding (par. 13-20).
First run 1949 bodies have door trim pads held at sides by inter-locking binding strips and
retainers. Later bodies used barbed nails as in 1948 bodies (par. 13-20).
Headlining is supported by roof bows and also by support wires located between the bows. The
rear supports are of new design. The sides of headlining are secured by metal retainers having lanced
teeth to grip the material. Aspecial tool is required for installation (par. 13-21).
Front seat adjuster provided with ball bearing rollers instead of rack and pinion used in 1948
models
(par. 13-22).
Robe cords are attached by the escutcheon outer retaining screw. See figure 13-50.
Convertible coupe folding
top boot is attached with metal supports fitted into metal loops behind
rear seat back. See figure 13-55.
Convertible coupe
rear quarter windows are operated by the Hydro-Lectric Power System. These
windows are controlled by switches en left door and also by switches in rear quarter panels adjacent
to windows (par. 13-31).
Hydro-Lectric Power Unit is mounted on rig ht side of cowl, under rear end of right front
fender.
Estate Wagon doors are of steel construction similar to closed bodies, with wood covering on
upper section, and wooden inside trim panels. Door locks, hinges, windows, and ventilators are simi-
lar to closed bodies and are serviced in same manner (Section 13-G).
Estate Wagon lift gate supported in open position by two cables attached to spring-loaded sash
balances mounted behind rear quarter trim panels (par. 13-39).
...... -

(9)
LUBRICARE AND BE ARIN G SERVICE
LUBRICARE
1-1
SECTIONS IN GROUP 1
GROUP 1
LUBRICARE
AND BEARING SERVICE
Section
I-A
1 -B
Subject Page
Periodic Lubricare Instructions. . . 1-1
Other Lubri care Instructions . . . . . 1-8
Section Sublect
1-C Bearing Service .
Pag.
1-11 I
SECTION 1-A
PERIODIC LUBRICARE INSTRUCTIONS
The Lubricare Instructions in this section are arranged in accordance with the milea ge and t im e in terv als which
will insure proper lubrication protection to all working parts of the car. See p.gure 1-2.
CON TENTS OF SECTION l-A
Paragraph Subject Page
1-1 Every 1000 Miles-Chassis . . . . . . 1-1
1-2
Every 1000 Miles-Body. . . . . . . . 1-4
1-3 Every 5000 Miles-Chassis an d
Body . ... ...................... 1-5
Paragraph Subject Page
1-4 Every 10,000 Mil e s- Ch ass is . . . . . 1-6
1-5 Twice a ye ar- Chass is " 1-7
1-6
Once a Year -Hydro -Le ctricPower
System ..... .. . . ... . . . . . 1-7
Bulletin No. Page No.
SER VICE BULLETIN REFERENCE
SUBJECT
1-1 EVERY 1000 MILES-CHASSIS
1. Eng ine. Check engine oil level. The oil
level should be
maintained at all times within
1 quart of the "Full" arrow, or not lower than
the middle hole in gauge rod. The lower or
"Add Oil" ar row on gauge rod is a danger mark
and not a working level. The space between ar-
rows on gauge rod rep resents 2 quarts. See
figure 1-1.
Add oil, or
chang e oil if mileage or o perating
conditions indicate the need for change, as
specified
under "Changing Engine Oil" (par.
1-7) . An over-supply of oil must not be added.
Change original oil filter element at fi rst
2000 miles. See paragraph 1-3, item 4.
2. F ront Su spension,Brake, Clutch and
Transmission Controls. Wipe
dirt from lubrica-
tion fitt ings , then apply a good grad e of water-
r esistant ch assis lubri ca nt, under p ressure, at
the following poi nt s (fig. 1-2) :
Lower Control
Arms, inner and outer ends
Support Upper Pivot Pins
Steering Knuckle Bushings
~ .. . © fBI ~ c;:;
\'A;Q'\ ? ~
~
~ D O N O T
&\.<:0 OVER FILL
~~f}) ~ \.-- DANGER MARK
NOT A WORKING LEVEl
Figure l - l -Markings on Oil Gauge Rod

1-2
LUBRICARE LUBRICARE AND BEARING SERVICE
(10)
40-50 70
13 (*14) 16*
*Ser. 50 with Dynaflow Drive LOWER CONTROL
ARMS-CL - 1000
~ r--r~ fRADIATOR-Maintain Water at Filling Leve l-
( lL 0 U~ UUr=--.:J------ILCOld 1000
IS
SERIES
CAPACITIES
Cooling System
With Heater-Qts. 14 \4 (*15\4)
Without HeaTer
-Qts ..
/ ""--
[
REAR AXLE-Check for Leaks at
1000
Check & Maintain at Filler Opening
-HGL -TWICE/YR.
Flushing &Seasonal Changes Not Recommended
TIE ROD
ENDS-Inner & Outer-CL-looo
fBATIERY-Add Pure Wa ter as Required
LDo not Over -flll 1000
DISTRIBUTOR SHAFT-CL- 1000
lDISTRIBUTOR CAM BEARING WICK, CONTACT
ARM PIVOT,
BREAKER PLATE BEARINGS
- EO-lOW- 5000
fDISTRIBUTOR CAM-Apply with Cloth
L -PJ- 5000
ENGINE-CHECK OIL LEVEL- 1000
fCRANKING MOTOR LINKAGE-Do Not Oil
L!'lunger-EO - 1000
[
SYNCRo .MESH TRANSMISSION-Maintain at
Filler
Opening-Flushing &Seasonal Changes
Not Recommended
-GL- 1000
U
DYNAFLOW TRANSMISSION-Check & Main·
tain Level-DD- 1000
DRAIN & REFILL-DD- 10,000
fREAR WHEEL
BEARINGS-WBL-When Relining
LBrakes
10 ·48
o
o
SHOCK ASSORSERS-SAF- 10,000
.../ C SUPPORT UPPER PIVOT PINS-CL- 1000
/ [ fSTEERING KNUCKLE BUSHINGS
L -CL- 1000
FRONT WHEEL BEARINGS-WBL-l0 ,000
OIL FILTER-Change Element
at 1st
2000 &5000,
Then Every
5000
\6:~~:=;;~~~H--+t[SHOCK ABSORBERS-Check &Maintain Level-
l[ -SAF - 10,000
9 11
5Y2
(**7) 7(**S Y2)
**With Dry Oil Filter
19 19
4 4
13 17
Crankcase- Refill
-Qts ...
Gas
Tank-Gallons .
Rear
Axle-Pis ..
Steering
Gear
-Ounces ... .
Syncro-Mesh Trons-
mission-Pts ...
Dynaflow Tronsmis-
sion-Qts ..
CL = Chassis Lubricant
DD =Special Buick Oil for Dynaflow Drive
EO =Engine Oil
GL =Mild.Type E. P. Gear Lubricant
GK =Graphite &Kerosene
HBF =Hydraulic Brake Fluid-Delco Super
No.9
HGL=Hypoid Gear Lubricant (2-105B)
PJ =Petroleum Jelly
SAF=Shock Absorber Fluid-Delco
SGL =Steering Gear Lubricant
WBL =Wheel Bearing Lubricant
BRAKE MASTER CYLINDER-Maintain Level Y2
J
'
to 1" Below Top of Filler Opening
-HBF- 1000
CLUTCH & BRAKE PEDALS-CL- 1000
CLUTCH RELEASE EQUALIZER-CL- 1000
CLUTCH L1NKAGE-EO-
LUBRICANTS
o
o
GENERATOR BEARINGS (2)-EO- 1 000 ---~
HYDRO·LECTRIC PUMP MOTOR BEARING
-EO- 5000
STEERING GEAR-SGL- Twice/YR. -----\--,-l~:;:z:~~itI
TRANSMISSION SHIFT IDLER LEVER PIN
-CL- 1000
HEAVY DUTY AIR CLEANER-Wash Element &
Reservoir, Renew Oil in Reservoir. Do Not Oill---,
Element
- EO, 1 PI. SAE 50 - 5000
MANIFOLD VALVE SHAFT-Free Up
-GK- 1000
CARTER CARB. PUMP ('SHAFT -EO-5000 ~~LJ~~~~~t~ ~
Figure 1-2-Chassis Lubricare Chart- 1948 and 1949, All Series.

(11)
LUBRICARE AND BEARING SERVICE LUBRICARE
1-3
Tie Rod Ends, inner and outer
Transmission Shift Idler Lever Pin
Clutch Release Equalizer
Clutch and Brake Pedals
3a. Synchro-Mesh Transmission. Check oil
level. Level should be
maintained at filler plug
opening. Add SAE 90 Mild-Type E.P. (extreme
pressure) Gear Lubricant for temperature not
lower than 10°F. below zero. For temperatures
lower than lOoF. below zero, add SAE 80 Mild-
Type E.P. Gear Lubricant. NOTE: Draining
and flushing transmission is
not necessary at
any time unless the lubricant has become con-
taminated.
Figure 1-3-Dynaflow Transmission Oil Level
3b. Dynafiow Transmission. Remove cover
from floor pan under right side of front floor
mat, remove and wipe off oil gauge rod. See
figure 1-3. Check oil level
with engine idling in
neutral, and with transmission oil warm. Add
Special Buick Oil
for Dynaflow Drive to bring
level to "Full" mark on gauge rod.
4. Rear Axle. Inspect rear axle for leakage
at gasket joints and rear wheel bearing oil
seals.
If transmission oil level was low, trans-
mission lubricant may have leaked back to
overfill
rear axle housing. If transmission was
overfull, rear axle lubricant may have leaked
into transmission. If there is no evidence of
oil leakage
it is not necessary to check rear axle
lubricant level each time the chassis is lubri-
cated. See paragraph 1-5 and 1-9.
5. Cranking Motor (Starter) .Apply a few
drops of engine oil to the link pins and fulcrum
stud of shift yoke. WARNING: Do not oil
solenoid plunger. See figure 1-4.
6. Distributor. Lubricate shaft with chassis
lubricant through fitting on housing; the prop-
er amount of lubricant is indicated by lubricant
emerging from relief hole in front of distribu-
DO NOT OIL
SOlENOID
PLUNGER
OIL P INS....t:=.~<-4 ' .
AND
FULCRUM
STUD
Figure 1-4-Cranking Motor
Figure
l- S- Dlstributor Shaft Lubrication
tor housing in a continuous unbroken stream.
See figure 1-5.
7. Batt ery .Add distilled water to bring
level to ledge at bottom of slot in well on bat-
tery having filler well sh own in figure 1-6. With
other type fill er wells add water to lA," above
separators. WARNING: Do not over fill.
8. Generator.
Place a few drops of engine
Figure 1-6-Battery Filler Well

1-4
LUBRICARE
LUBRICARE AND BEARIN G . SERVICE
(12)
1-2 EVERY 1000 MILES-BODY
pref erred. Ne ver use reclaimed fl uid or any
mineral oil.
13.
Rad iator. Check coolant level when en-
_ gine is cold and add wat er to line ma rked "Fill-
ing Level-Cold" stamp ed appro xim ately 11 ,4"
below top of head tank. See figure 1-8. CAU-
TION: Rad iator cap should not be removed
wh en engine is hot because'relieving the pres-
sure
may cause the cooling sys tem to boil, wi th
resultant loss
of water or anti- fr eeze solution.
Filling radiator when hot , or filling above level
line
may result in loss of water or ant i-fre eze
solution throuah. overflow pipe.
14.
Tir es. Inflat e all ti res to pressu res
show below. In temperatur es below freezing in-
flate
tires 2 lbs. high er. WARNING: It is not
possible to inflate tires correctly when HOT.
1. Hood Fastener Mechan ism . Use engine
oil on
fastener linkage on hood of 1948 mod els,
or on pilots and release me chani sm of hood
hing es on 1949 Series 50-70. Li ghtl y co at pilot
pins and fastener hooks wit h Lu bripla te.
2. Door Lock Bolts and Str ik ers. Sp ar ingly
coat curved side of bolts and bea ring surfaces
of strikers with G.M. Door-Ea se Lubricant. Use
light engine oil on flat side of bol ts and on
saf ety catches in strik ers .
3. Door Dovetail Bump ers and Wedge
Plates.
Apply G.M. Door-E as e Lubricant to the
composition shoes and sur faces of w edg e pla tes.
If bump er shoes appea r dry, remove the casing
caps and brush cup greas e on b oth sides and top
surface of upper sliding shoe and on the sid es
only of
lower stationar yshoe. R einstall cas ing
caps.
4. Door Checks and Hinges. Use light en-
gin e oil on check link hinge pin. On 1948
Models, lubricate check link bum per with
g raphited light engin e oil by opening door and
pla cing nozzle of oil c an through hole th roug h
which check link tra v els; lubrica te door hold-
open
sho es with graphite gr ease. No lubricant
required on hinge pin s.
5. Dome Lamp Sw itch. Lubricate end of
switch plunger and contact point on door hinge
pillar with G.M. Door-Ease Lubricant.
29 1bs.
27 1bs.
25 1bs.
29 1bs.
26 1bs.
24 1bs .
22 1bs .
26 1bs.
When Tire. Are When Tire. Ar..
Cold Warm
Series
40 .
50 .
70
except 1948 Model 79 .
1948 Model 79 .
Figure l -S-Radiator Filling Level
Figure
1-7 -Manifold Valve Shaft
10. Manifold Valve Shaft . Place a few
drops of graphited kerosen e on shaft at each
end and rotate shaft to work lubricant into
bearings . See figure 1-7. If sh af t is frozen, free
up by tapping ends of shaft lightl y with ham-
mer.
11. Ai 1' Cleaner. Normally se rv iced ev ery
5000 miles. If car is operating in dusty terri-
tory, however, check conditions of air cleaner
and clean it if dirty. See instructions un der
" Every 5000 Miles-Chassis " (par .1-3).
12. Brak eMaster Culinder, Tho ro ughly clean
filler cap
nut before removal to avoid get-
ting dirt into reservoir. Add fluid as required to
bring level to
112 "to 1" below top of filler open-
ing . Use G. M. or Delco Super No.9 Hydraulic
Brake Fluid. If No.9 is not availabl e, G. M. or
Delco Super No. 11 may be used, but No.9 is
oil in
cups at b oth ends of generator. Avoid ex-
cessive oiling
which may affect brushes and
windings.
9. Throttle Control Linkage. Place a few
drops of engine oil at connections. If the ac-
celerator equalizer shaft squeaks in the upper
and lower bra ckets, work Lubriplate into the
beari ngs and wipe off excess lubricant .

(13)
LUBRICARE AND BEARING SERVICE
LUBRICARE
1-5
6. Glove Box Door. Apply a few drops of
light engine oil to glove box hinges . Sparingly
coat lock striker with G.M. Door-Ease Lubri-
cant .
7. Windshi eld W iper Cables. Wipe a few
drops of light engine oil on cables where they
pass over tensioner pulleys. CAUTION: Wind-
shield wiper blades
must not be rotat ed by hand
for any reason as th is places an undue strain
on cable fastenings.
8. Lock Cylinders.Blow powdered
graphite
into key slot. Do not use oil.
9.
Rear Compartment Lid Lock Mechanism.
Coat moving surfaces sparingly with Lubr i-
plate or cup grease .Wipe off any surplus lu-
bricant.
Figure 1-9-Distributor Lubrication-1948 Model Shown
1-3 EVERY 5000 MILES-
CHASSIS AND BODY
1. D istr ibutor. Remove distributor cap and
rotor. Apply a few drops of light engine oil to
felt wick in top of cam. Put 1 drop of oil on
breaker arm pivot. On 1948 models, put 1 drop
of light engine oil on each breaker plate ball
bearing-don't over-oil. Work asmall amount
of petroleum jelly i nt o a cloth, then hold cloth
on
distributor cam while engine is be ing
cranked. CAUTION: An excessive amount of
jelly
wi ll th row off when hot and insulate the
contact poi
nts, causing igni tion failure. See fig-
ure 1-9.
2. Air Cleaner. Ev er y 5000 Miles (more
often under dusty oper ating conditions) dis-
assemble
air cleaner and wash cleaner e lement
and oil sump with anon-inflammable solvent. DO
NOT
USE KEROSENE. Wipe sump dry and
allow cleaner element to drain until dry. Do not
use air blast on cleaner element.
F igure 1 -10-·A ir Cleaner Parts
Fill sum p to in dicat ed level w ith one p int SAE
50 engin e oil and assemble air cleaner. See fig-
ure 1-10. Do not oil the cleaner elem ent because
oil
wi ll drain back into the sump and cause
sump to be ove rf ull.
3. Pu
mp Operating Coumter sha ft-Car ter
Ca rbu retor Only. Remove the 2 dust cover at -
taching screws and appl y se veral drops of en-
gine oil in scr ew holes abo ve the countershaft.
See figure 1-11.
In s ta ll sc re ws.
Figure 1-11 -Countershaft Lubrication
4. Oil Filter. Change original oil filter ele-
ment at first 2000 miles, the second element at
first 5000 miles, then ch an ge eleme nt at each
5000 miles
thereafter. Remove old element and
wipe container out thor oug hly w ith clean
cloths; drain plug may be removed to aid clean-
ing . See figure 1-12. Use new cover gasket
when installing new element. NOTE: Elements
used in 1948 and 1949 filters are not inter-
changeable. Each filter bears a label wh ich
gives the AC numb er of filter elem ent that m ust
be used for replacem ent .

1-6
LUBRICARE
LUBRICARE AND BEARING SERVICE
(14)
Figure 1-12-011 Filter
5. Hudr o-Lectric Power Unit Motor (When
Installed). Swing the oil hole cover aside on
upper end of motor and lubricate upper bearing
with afew drops of engine oil. See figure 1-13.
Figure 1-13-Power Unit Motor
1 -4 EVERY 10,000 MILES-CHASSIS
1. Front Wheel Bearings. Wipe old grease
out of hub and wash bearings. Work approx-
imately one tablespoon of wheel bearing lubri-
cant into each ball bearing. The oil seal pack-
ings should be examined for wear or leaking
and replaced if necessary.
Bearing Adjustment. Take up spindle nut
with 10" wrench until bearings are preloaded
at
least 1 hex, then rotate wheel 1 revolution
to
make sure bearings are seated. Back off
spindle
nut until bearings are loose. Tighte n
nut until all bearing looseness is just removed,
then line up nut to nearest cotter hole and in-
stall cotter pin. Do not mistake loose king pin
bushings, etc., for wheel bearing looseness.
CAUTION: Bearing preload must not exceed
1/12 turn of nut.
Inspect Brake Linings and Drums while
front wheels are off. If linings are thin or
drums are beginning to score, the car owner
should be notified.
2. Shock Absorbers. Thoroughly clean off
all
dirt from top of shock absorbers, front and
rear, to avoid getting dirt into absorbers when
filler plugs are removed.
(a) Front Shock Absorbers. Remove filler
plugs
and add fluid until it overflows, using
only G.M. or Delco Shock Absorber Fluid . In-
stall plugs loosely to exclude dirt and bounce
front of car up and down by front bumper to
force
out any air in cylinders. Repeat addition
of fluid and bouncing of car until no more fluid
can be added, then install filler plugs securely.
(b) Rear Shock Absorbers. Remove filler
plugs
and add G.M. or Delco Shock Absorber
Fluid until level is 23 /32" to V2" below filler
openings. Install plugs loosely to exclude
dirt
and bounce car up and down by rear bumper
to force out any air in cylinders. Add additional
fluid, if necessary, and adjust fluid level to
23
/32" to V2" below filler openings, then install
filler plugs securely. Correct level in rear ab-
sorbers may be conveniently obtained by use
of Shock
Absorber Gun K.M.O. 1026 and
Adapter J1611. The gun is used to fill absorber
and the adapter is placed on gun nozzle to suck
out surplus fluid.
(c)
Air Space. Shock absorbers require
some air space for expansion of fluid when hot,
otherwise fluid
may be forced out. Air space is
built into front absorbers, but must be pro-
vided in
rea?" absorbers by leaving fluid level at
specified distance below filler opening.
Figure 1-14-Dynaflow Converter Drain Plugs
3. Dimafloui Transmission. Drain and re-
fill. Before draining warm up transmission.
Remove oil pan drain plug. Remove bell hous-
ing cover and both converter drain plugs. See

(15)
LUBRICARE AND BEARING SERVICE
LUBRICARE
1-7
figure 1-14. After complete draining of pan
and con verter, install all parts.
Put in 3 quarts of Special Buick Oil for
Dynaflow Drive and with engine idling in neu-
tral, complete the refilling with 8 quarts of oil
(total 11 qts .), on Series 70, or with 6 quarts
(total 9qts.) , on 1949 Series 50. After fill-
ing, idle engine
for a few minutes and then
check to make certain level is at "Full" mark
on oil gauge rod.
1-5 TWICE A YEAR-CHASSIS
1. Rear A xle. Check lubricant level twice
ayear,
preferably in the Spring and Fall. When
checking lubricant level, clean around filler
plug before removal and use care to avoid in-
troducing dirt and abrasive material into the
lubricant. If level is low, fill axle housing to
filler
plug opening with approved lubricant as
specified in
paragraph 1-9.
2. Steering Gear. Check level of lubricant
in housing. Add lubricant specified below to
level of filler opening. Do
not use pressure fit- .
ting in filler opening, as this will force lubri-
cant up the steering column.
If lubricant level is very low, check for ex-
cessive leakage
at pitman shaft seal in lower
end of housing .
The steering gear is filled at the factory with
aspecial all-season gear lubricant. Seasonal
change of
lubricant is unnecessary.
When
necessary to add lubricant or to fill a
steering gear that has been rebuilt, use "Sagi -
naw All-Season Steering Gear Lubricant". This
lubricant is marketed through United Motors
Service in 5, 10 and 25 pound
containers . .
If "Saginaw All-Season St eering Gear Lubri-
cant" is not available, "All Purpose" Gear
Lubricant of th e following specifications may
be used when adding asmall amount of lubri-
cant , but should not be used to fill· a rebuilt
steering gear : (a) In t emperature zones which
stay above 10°F. use SAE 90. (b) In tempera-
ture zones which are likely to drop below 10°F.
use SAE 80.
1-6 ONCE A YEAR-HYDRO-LECTRIC
POWER SYSTEM
1. Hyd ro-Lectric Syst em (When Installed).
Each Fall all windows should be lowered, the
seat moved back and the reservoir on the power
unit removed, cleaned out with Declene or alco-
hol
and then refilled with G. M. or Delco Super
No.9 or No. 11 Brake Fluid . Brake fluid heav-
ier than No. 11 should not be used in extremely
cold climates as it will cause sluggish operation
of the Hydro-Lect ric system,
CAUTION: Before installing reservoir, make
certain that reservoir gasket is in good' condi-
tion and properly installed.
When reservoir is
installed mak e certain that it make s full con-
tact
with gask et all around. Any leakage of
dirt or wat er into reservoir will cause serious
damage in
Hud ro-Lectric Syst em.
Each Spring the fold ing top power cylinder
piston rods should be lubricated with a few
drops of castor oil or br ake fluid. Do not use
mineral oil.

1-8
LUBRICARE LUBRICARE
AND BEARING SERVICE
(16)
SECTION l-B
OTHER LUBRICARE INSTRUCTIONS
CONTENTS OF SECTJON 1-8
Paragraph Subject Page
1-7 Changing Engine Oil. . . . . . . . . . . 1-8
1-8
Engin e Oil Re commend ations . .. 1-8
Paragraph Subject Page
1-9 Draining , Flushing , Refilling
Rear Axle. . . . . . . . . . . . . . . . . . . . 1-9
1
-10 Non -Periodic Lubr i car e Inst ru c-
tions ......................... 1-9
Bulletin No. Page Na.
SERVICE BULLETIN REFERENCE
SUBJECT
1-7 CHANGING ENGINE OIL
a. When to Change Engine Oil
Und er normal dri ving conditions when the
car is operated at stabilized temperatures most
of the time , such as on long trips, and there is
reasonable freedom fr om dust or other con-
taminat ing conditions, d raining and filling with
fresh oil ever y 2000 to 3000 miles is recom-
mended.
Under light dri ving conditi ons when frequent
starts and stops do not l et the engine oil reach
a stabilized temp eratur e, particularly in cold
weather, it is nece ssar y to chang e oil more fre-
quently to compensate for dilution and sludge
formation. It is necessar y to change oil more
frequentl y when the car is habitually operated
on dusty roads. Bad dilution or dust conditions
may require draining and refilling as often as
every 500 miles.
It is necessary to change engine oil when-
ever it becomes contaminated with harmf ul
materials . The following conditions cause con-
tamination of en gine oil an d sh or ten its useful
life:
1. Short runs wi th a cold engine, particu -
larly in extremely cold weat her, incr eas e "dilu-
tion" and water condensation in crankcase.
2. Hard driving causes oil to oxidize more
rapidly. When fresh oil is added ,oxidized oil
will
deposit "granular carbon" and "varnish"
on internal engine parts.
3. Dusty roads or d ust stor ms cause con-
tamination of engine oil even though the crank-
case is protected by filters.
b.Crankcase Flushing
Flushing th e c ra nkcase wit h oils or sol ut ions
other than a good wi nte r grad e (10- W) engi ne
oil is not recomm ended. Use 3 q ua rts of 10-W
oil (4
qts , if oil filter is drained) and idle the
engine at 1000 RPM (eq uiv alen t to 20 MPH)
until the oil is hot, th en dr a in imm ed iat ely and
fill
with correct season al gr ad e of engine oil.
1- 8 ENGINE OIL RECOMMENDATIONS
a. Choice of Oil
1. Regular Typ e Mo tor Oil. This term des-
ignates motor oil generally suitable for use in
internal combustion engines under mod erate
operating conditions.
2.
Premium Type Motor Oil. This te rm
designates motor oil ha v ing the oxidati on sta-
bilit y a nd bearing corrosion preven tive p rop-
ertie s necessary to make it genera lly suitable
f
or use in internal combu stion e ng ines w here
operating cond iti ons ar e more seve re than reg-
ular duty .
Under normal driving conditions where the
engin e is r equired to develop gr e at er power for
a greater pe rcentage of the time th ePremium
Type Motor Oils
are recomm ended.

(17)
LUBRICARE AND B EARIN G SERVICE
LUBRICARE
1-9
1- 9 DRAINING, FLUS HING , R EFI LLI NG
REAR AXLE
Not below 320F 20-W or 20
As low as 100F 20-W
As low as _10
0F
10-W
Below _10
0F
5-W if available or
10-W
plus 10% kerosene
b. SAE Viscosity Number s for ~i1 s
SAE viscosity numbers indicate th e body or
fluidity of the oil. They are the index for light
or heavy bodied oil for use in cold or hot oper-
ating conditions respectively.
a. Original Factory Lubricant
All Buick rear axles are filled at the factory
with a Special Hypoid Gear Lubricant .Under
no circumstances should the fact
ory lubricant
be drained
from arear axle to be replaced with
any other type of lubricant.
b. Bra ke Lubrica re
Lubri cation of all metal contact points at
wheel brake assemblies is normally performed
during the major brake adjustment (par. 8-15)
or may be performed whenever a brake drum .
is removed.
Lubrication of parking brake cables is also
performed during the major brake adjustment;
1-10 NON-PERIODIC LUBRICARE
INSTRUCTIONS
The Lubricare instructions covered in this
paragraph are not normally required for
proper maintenance of the car. They are listed
here to furnish complete information on Lubri-
care and should be used only to correct the con-
ditions specified.
Since these lubrication procedures are used
during repair operations they are placed in the
repair sections of the manual where they may
be found by reference to the indicated para-
graphs.
a. Clutch Internal Lubricare
Lubrication of internal working parts of the
clutch is usually required only at tim e clutch
is as sembled and installed; however, if lubri-
cation becomes necessary to eliminate squeaks
or correct excessive pedal pressure, follow in-
structions given in paragraph 4-8.
d. Approved Rear Axle Lubricant
.1. If the rear axle, or a replacement gear
set, has been in service less than 10,000 miles,
use only Factory Hypoid Gear Lubricant.
Factory Hypoid Gear
Lubricant may be or-
dered from any Buick Parts Warehouse under
Group 5.535, Part No. 1393524. This is the two-
quart can as supplied with 1946-47-48-49 Model
service ring and pinion gear sets.
2. If the rear axle, or a replacement gear
set, has been in service 10,000 miles or more an
SAE 90 "Multi-Purpose" Type Gear Lubricant
conforming to and approved under U. S. Army
Specification 2-105B can be used.
cover,
using a new gasket and coating bolt
threads with white lead to avoid oil leaks. Align
filler plug with first bolt hole to right of lower
center bolt hole in hous ing. This change from
straight down position increases oil level to
4 pints .
4. Refill
rear axle housing to filler plug
opening with approved lubricant specified
below .
Use SAE Grade
Anticipate d Minimum
Air Temperature
b. Draining Rear Axle
It is not necessary at any time to drain the
original Factory Hypoid Gear Lubricant, ex-
cept when it has become contaminated, or when
draining is required for inspection of parts or
for repairs.
If rear axle lubricant has become contam-
inated, the rear axle should be flushed and re-
filled with new approved lubricant.
c. Flushing and R efilling Rear Axle
1. With rear axle jacked up so that wheels
are clear of the floor, d rain rear axle housing
by removing lower cover bolts, then reinstall
bolts.
2.
Thoroughly flush rear axle housing with
SAE 10-W or flushing oil. Do not use water ,
steam, gasoline,
ker osene, alcohol, or other
cleaning fluids
for flushing. When flushing, put
transmission in high gear and run rear axle
slowly for one or two minutes. CAUTION: Do
not suddenly accelerate or "gun" engine and
do
not exceed aspeed of 25 MPH.
3. Drain housing, remove cover and wipe
out housing with clean cloths. Install housing
c. Break-In Oils and Ot her Compounds
"Break-In" oils or compounds are not neces-
sary in Buick engines. They should not be u sed
in either the engine oil or gasoline under any
circumstances unless the supplier can furnish
satisfactory proof that the compound does not
contain harmful ingredients.

1-10
LUBRICARE LUBRICARE AND BEARING SERVICE
(18)
however, 'operation under conditions where
mud and water are frequently encountered may
require more frequent lubrication. See para-
graph 8-14.
c. Rear Wheel Bearing Lubricare
Rear wheel bearings need not be lubricated
more often than 20,000 miles. Whenever rear
brakes are relined, or axle shafts are removed
for other work, it is advisable to inspect rear
wheel bearings and oil seals. Replace seals if
leaking or worn. Fill rear wheel bearings and
space between oil seals with wheel bearing
lubricant. Coat leather edges of seals with
lubricant before installation of axle shafts.
d. Speedometer Cable Lubricare
The speedometer cable is factory lubricated
with special grease which will last indefinitely
under normal operating conditions. In extreme-
ly hot climates, or where considerable dust and
water is encountered it may be necessary to
lubricate the cable at intervals of approx-
imately 20,000 miles or every two years. See
paragraph 10-68.
e. Lubricare of Miscellaneous Rubber Parts
Rubber parts such as door weatherstrips,
cowl ledge lacing, stabilizer bushings , etc., do
not require Lubricare unless they are causing
squeaks. If Lubricare becomes necessary , make
certain that the lubricant used is not injurious
to rubber. Where the lubricant can be spread
on the rubber part use L ubriplate or white
vaseline. Where a penetrating liquid lubricant
is required use G. M. Ru Glyde (Group 8.786) .

(19)
LUBRICARE AND BEARING SERVICE
SECTION l-C
BEARING SERVICE
(BALL AND ROLLER)
BEARING SERVICE
1-11
The instruc t ions in this Section cover removal , installation, cleaning and inspection of all ball and roller bearings
used in the various units of the vehicle. These instructions must be carefully followed to avoid failure of bearings after
any repair work in which they are involved.
CONTENTS OF SECTION l-C
Paragraph Subiect Page
1-11 Removal and Installation of Bear-
ings 1-11
1-12
Care of Bearings Before Cleaning 1-12
1-13 Cleaning Bearings " 1-12
Paragraph Subject Page
1-14 Inspection of Bearings After
Cleaning 1-13
1-15
Care of Cleaned and New Bear -
ings 1-13
Bulletin No. Page No.
SERVICE BULLETIN REFERENCE
SUBJECT
1-11 REMOVAL AND INSTALLATION
Bearings are frequently damaged so that they
fail to give satisfactory service due to improper
methods used in removal
and installation. The
same general precautions apply to both removal
and
installation-these are as follows:
a. Cleanliness
Absolute cleanliness is essential in the hand-
ling of all
units in which ball or roller bearings
are installed. Before any such unit is opened
for inspection or removal of parts, all loose dirt
should be washed off the exterior to avoid
getting abrasive substances into the bearings.
Removed
bearings must be handled so as to
avoid contamination as described below
(par .
1-12
and 1-15.) During the installation the
housing and all interior parts, as well as the
tools used for assembly, must be kept abso-
lutely clean.
If a partially assembled unit is to
be
left standing for any time, or over night,
cover it with clean cloths or paper to exclude
dust.
b. Proper Tools
Proper tools must be used during removal
and installation to avoid damage to bearings
and adjacent parts. Special tools are designed
for removal and installation of some bearings
and these should be used where specified in
instructions.
When special tools are not avail-
able, an
arbor press should be used, wherever
it is adaptable, to apply pressure and avoid
shock.
Never
hammer on a bearing as the hardened
steel may chip or crack. Use of a hammer and
drift is. bad practice. The drift may slip and
damage the separator or shield and there is
always
the danger of cocking the bearing or
cracking the tight fitted race. If a hammer and
drift must be used the drift must be of soft
material, such as brass, and properly shaped to
assure good bearing against the tight fitted
race. A
clean piece of tubing of proper diameter
to bear all around the race is preferable to a
solid
drift.
c. Application of Pressure
Bearings may be seriously damaged by im-