Chevrolet 1977 light duty truck Service Manual page 14

5. M ake hood
functional check to assure the assembly is working
correctly.
BODY L U B R IC A T IO N
N o rm a l use of a
movem ent at certain points in the cab or body. Noise,
w e a r and im p ro p er operation at these points will result
w hen a protective film o f lubricant is not provided.
For exposed surfaces, such as door checks, door lock
bolts, lock striker plates, dovetail bu m per wedges, etc.
apply a thin film o f light engine oil.
W h ere oil holes are provided in body parts a
dripless oil can be safely used, but any lubricant should
be used sparingly, and after application all excess should
be carefully wiped off.
The seat adjusters
overlooked, should be lubricated with w ater resistant EP
chassis lubricant which meets G eneral Motors Specifica­
tion G M 6 0 3 1-M.
T here are other points
occasionally require lubrication and which are difficult to
service, window regulators and controls are confined in
the space between the upholstery and the outside door
panel. Easy access to the w orking parts m a y be m ade by
removing the trim. Door weatherstrips and rubber hood
bum pers should be lightly
lubricant.
U N D ER B O D Y M A IN T E N A N C E
Corrosive materials used for ice and snow removal
and dust control accumulate on the underbody.
hinge a n d latch m echanism
truck causes metal-to-metal
and seat track, ordinarily
on bodies which may
coated with a rubber
allowed to remain,
accelerated rusting
components such as fuel lines, fram e and floor pan,
exhaust system, etc. At least once each year, preferably
after a w in te r's exposure these corrosive materials should
be removed by flushing the underbody with plain water.
Particular attention should be given to cleaning out those
areas where mud and other foreign materials collect.
SPEEDO M ETER ADAPTER
On vehicles so equipped, lubricate ad ap ter at fitting
with water resistant E P chassis grease which meets
G eneral Motors Specification G M 6031-M every 7,500
miles or 12 months (6,000 miles or 4 months Heavy Duty
Emission Vehicles).
C O M PLETE VEHICLE M A IN T E N A N C E
SCHEDULE
Three separate M aintenance Schedules are used for
the 1977 truck models. Two schedules (L-6 Schedule and
V-8 Schedule) are used on the Light Duty Emission
Vehicles while a third schedule applies only to Heavy
D uty Emission Vehicles.
Presented on the following pages are the M ainte­
nance Schedules, followed immediately by the schedule
explanation. Section " A "
M aintenance) and Section "B " (Safety M aintenance) are
the same for both L-6 and V-8 Schedules; however,
If Section " C " (Emission Control M aintenance) differs.
these materials can result
and deterioration o f underbody
(Lubrication and
in
General