
1-6MAINTENANCE
surroundingareabeforeremoving
fillerplug.Levelshouldbemain-
tainedatfillerplugopeningby
addingS.A.E.90Multi-Purpose
GearLubricantorS.A.E.40or
50EngineOil.NOTE:Draining
andflushingtransmissionarenot
necessaryunlessthelubricant
hasbecomecontaminated.
3.
AutomaticTransmission.
Checktransmissionoillever,with
transmissionoilatoperating
temperature(180°approximate),
transmissioninparkandengine
idling.
Removegaugerodlocatedunder
rightsideofhood,wipedrywith
cleancloth,thenreinstalltofull
depth.Removerodandnoteoil
level.
Ifoillevelisbelowthe"ADD"
markongaugerod,addoilspeci-
fiedinparagraph1-6butdonot
fillabovetheFULLmark.Dis-
tancebetweentheFULLandADD
marksrepresentsapproximately
onepint.
4.
PowerSteeringGear.Thor-
oughlycleandirtfromreservoir
capontopofoilpump,thenre-
movecap.Withsystemwarmed
up,
maintainlevelwithBuick
powersteeringgearfluidor
equivalent.SeeFigure1-9.
REMOVE
CAPTO
INSPECT
LEVEL
Figure
1-9—Power
Steering
GearReservoir
5.
RearAxle
(a)StandardDifferentialRear
Axle.Checklubricantlevelafter
allowingtimeforlubetosettle.
Cleanthesurroundingareabefore
removingfillerplug.Level
shouldbemaintainedatfillerplug
openingto1/4"belowbyadding
S.A.E.90Multi-PurposeGear
Lubricant(MIL-L-2105B).When
carisoperatedintemperatures
continuouslybelow- 10°F.,use
80Multi-purposeGearLubricant.
NOTE:Drainingandflushingis
notrecommended,unlessthelu-
bricanthasbecomecontaminated.
Whencompleterefillingisneces-
sary,S.A.E.80or90Multi-Pur-
poseGearLubricantmaybeused
providedtheaxlehasbeenin
servicefor1,000milesormoreT
Axleswithlessthan1,000miles
mustnotbecompletelyrefilled
withanylubricantotherthan
FactoryHypoidLubricant.
6.PositiveTractionRearAxle-
OnWildcats,Electra225;s,and
Rivieras,thisaxlecanbeidenti-
fiedbya tagattachedtothefiller
plugreading"UseLimitedSlip
Diff.
LubeOnly".OnLeSabres,
thissametagcanbefoundat-
tachedtoa boltontherearcover.
OnallPositiveTractionaxles,
checklubricationlevelafteral-
lowingtimeforlubricanttosettle.
Cleanthesurroundingareabefore
removingfillerplug.Level
shouldbemaintainedatfillerplug
openingto1/4below.Addonly
lubricantconformingtoBuick
Specification
#723.
AlsoseePar.
1-9.
g.
MinorLubrication
Occasionallylubricatethepivot
pointsofmovingpartssuchas
doorandhoodhingesandlatches,
doorholdopen,clutch,transmis-
sion,parkingbrakeandfolding
toplinkagewithLubriplate,or
equivalent,orengineoilwhere
applicable.A smallquantityof
NOTESTAMPON
BOTTOMEDGE
DIFFERENTIAL
CARRIERFLANGE
Figure1-10—IdentifyingPositive
TractionDifferential
locklubricantoccasionallyap-
pliedtolockcylinderswillpre-
ventsticking.Seedetailsunder
Maintenance- AsRequired.
NOTE:Donotlubricatecarbu-
retororthrottlelinkage.
h.BodyRubberParts
Door,hood,andrearcompart-
mentrubberweatherstripsand
bumpers,anddoorbottomdrain
holesealingstripsmaybekept
pliableandquietbytheapplica-
tionofa lightcoatofBuick4-X
Compoundorsuitablesilicone
lubricantequivalent.
i.Tires
Forbesttiremileageswitchtires
asrecommendedinparagraph7-8
j.
ConstantVelocity
UniversalJointCenter
Ball(49000)
Rotatepropellershaftuntilfitting
isvisiblethroughrearholein
frametunnel.SeeFigure1-11.
Insertspecialgreasegunnozzle
(Alemite#326375orequivalent)
throughframetunneltobear
solidlyagainstfitting.Oneortwo
shotsfroma levertypegrease
gunaresufficient.
LubricatingtheConstantVelocity
jointoncertainhoistssuchas