Chevrolet 70 1969 Series, Shop Manual

Page: 24 / 913

LUBRICATION 0-17
CHASSIS LUBRICANT
(SYMBOL “C” ON CHARTS)
The lubricant indicated by the symbol " C " on
charts should be a high grade pressure gun lubri­
cant.
Good quality lithium soap multi-purpose grease
is recommended, especially for extreme operating
conditions - water, heat, etc.
APPLYING CHASSIS LU B R IC A N T
All lubrication fittings must be clean before
applying lubricant. Also, always be sure equipment
used in applying lubricant is clean. Every pre­
caution should be taken to prevent entry of dirt,
grit, lint or other foreign matter into lubricant
containers.
Fittings that have become broken or damaged
should be replaced with new part, and can be re­
moved with a wrench or suitable extracting tool.
C O L D W E A T H E R PR EPAR ATIO N
When hard steering is encountered as a result
of cold weather, the steering system should be lu­
bricated as follows:
Use steering gear lubricant (Symbol "SG ") or
Multi-Purpose grease (N .L .G .I. #0) to lubricate all
steering linkage such as steering knuckles, tie rod
ends, and (if used) power steering booster cylinder
ends. In warmer weather, relubricate linkage with
chassis grease previously recommended.
HIGH TEMPERATURE GREASE
(SYMBOL “S2” O N CHARTS)
The type of lubricant indicated by the symbol
"S 2 " on charts should be a short fiber, non-fluid,
sodium soap grease having a high melting point
(350°F., min.). Good quality lithium soap grease is
also highly recommended, especially where cor­
rosion is evident due to moisture. Use No. 2 grade
in each case.
WHEEL BEARINGS
C L E A N IN G
With a stiff bristle brush and cleaning solvent,
thoroughly clean bearings and hubs, making sure
that all old lubricant and dirt is removed. Check
bearings and cups and replace damaged parts.
PACKING
Some wheel bearings are lubricated from axle
differential after the initial lubrication. However,
whenever wheel hub is removed, bearings should
be cleaned, inspected, and re-lubricated. Some
rear wheel bearings require cleaning, inspection,
and lubrication at regular intervals as specified on
lubrication charts.
When packing by hand, be sure that lubricant
is kneaded between rollers and races. A mechan­
ical lubricator can be used; however, bearings
must be thoroughly lubricated.
D O N O T F IL L HUB. Coat inside hub and axle
spindle with thin coat (1 /8 " thick) of grease to re­
tard rusting. Allow some excess grease at inner
side of bearings and around adjusting nut. D O N O T
P A C K HUB W IT H G R E A S E . The lubricant applied
to bearings is sufficient to provide lubrication un­
til next service period. Readjust bearings as des­
cribed in " F R O N T HUBS A N D BE A R IN G S" (SEC.
3D) or " R E A R HUBS A N D BEARIN G S" (SEC. 4C)
of this manual.
OTHER HIGH TEMPERATURE
GREASE USES
The following points require use of high tem­
perature grease at assembly. Methods of applying
grease to these points are covered in applicable
manuals.
Clutch Pilot Bearing
Clutch Release Bearing Collar
Clutch Shift Fork Ball Stud
Steering Column Upper Bearing
PETROLEUM JELLY
(SYMBOL “S3” ON CHARTS)
The type lubricant indicated by the symbol
"S 3 " is petroleum jelly or petrolatum.
D ISTR IBU TO R B R E A K E R C A M
At recommended intervals, apply a small
amount of petroleum jelly on distributor breaker
cam. Do not use an excessive amount.
B A T T E R Y T E R M IN A L S
To prevent corrosion, remove cables, clean
terminals on cable and battery, and reinstall cables
to battery terminals. Tighten cables securely, then
apply petroleum jelly.
CHEVROLET SERIES 70-80 H EAVY DUTY TRUCK SH O P M A N U A L