Advertisement
(17)
LUBRICARE AND BEARING SERVICE
LUBRICARE
1-9
1-9
DRAINING,
FLUSHING, REFILLING
REAR AXLE
Not below 32
0
F
20-W or 20
As low as 10
0
F
20-W
As low as _10
0
F
10-W
Below _10
0
F
5-W if available
or
10-W plus
10%
kerosene
b. SAE Viscosity
Numbers
for
~i1s
SAE viscosity numbers indicate
the
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 a rear axle to be rep
laced
with
any other type of lubricant.
b.
Bra
ke Lub ricare
Lubrication
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
time
clutch
is
assembled
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
housing.
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
Anticipated
Minimum
Air
Te mpera tu re
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
Refilling
Rear Axle
1. With rear axle jacked up so that
wheels
are clear of the floor,
drain
rear axle
housing
by removing lower cover bolts, t
h en reinstall
bolts.
2.
Thoroughly flush rear axle housing with
SAE 10-W or flushing oil.
Do not
use water,
steam, gasoline, kerosene ,
alcohol, or other
cleaning fluids for flushing
.
When flush ing , 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 a speed of
25
MPH.
3. Drain housing, remove cover and wipe
out housing with clean cloths. Install housing
c. Break-In Oils and
Other
Compounds
"Break-In" oils or compounds are not neces-
sary in Buick engines. They should not be
used
in either the engine oil or gasoline under any
circumstances unless the supplier can furnish
satisfactory proof
t
ha t the compound does
n
ot
contain harmful ingredients.
Advertisement
