1994 CHEVROLET ASTRO PASSENGER air suspension

Downloaded from www.Manualslib.com manuals search engine Explanation Of Scheduled Maintenance Services
Below are explanations of the services listed in the maintenance charts.
The proper fluids and lubricants to use are listed
in this section. Make sure
whoever services your vehicle uses these. All parts should
be replaced and
all necessary repairs done before you or anyone else drives the vehicle.
1.
2.
3.
4.
5.
ENGINE OIL AND OIL FILTER CHANGE“ - ALWAYS USE
API SERVICE
SH OR SG ENERGY CONSERVING I1 OILS OF THE
PROPER VISCOSITY. The
“SH7 or “SG7 designation may be shown
alone or in combination with others, such as “SWCD”, or
“SH, SG,
CD,” or “SG/CD”, etc. To determine the preferred viscosity oil for your
vehicle’s engine see “Engine Oil”
in the Index.
CHASSIS LUBRICATION - Lubricate the front suspension,
steering linkage, transfer case shift linkage, parking brake cab\
le guides,
and brake pedal springs at the intervals specified on the proper
maintenance schedule, or at every engine oil change, whichever \
comes
first.
Ball joints and king pin bushings should not be lubricated unless their
temperature is
10°F (-1 2°C) or higher. When the weather is cold, let
them warm up before lubricating them or they could be damaged.\

Also, be sure to check all the vehicle fluid levels at this \
time.
COOLING SYSTEM SERVICE* - Drain, flush and refill the
system
with new or approved recycled coolant conforming to “GM
Specification 6038-M”. See “Engine Coolant”
in the Index for the
proper coolant and mixture to use
in your vehicle.
Also inspect the hoses and replace them
if they are cracked, swollen, or
deteriorated. Clean the outside of the radiator and air conditioning
condenser. Wash the radiator neck.
To ensure proper operation,
pressure test the radiator and cap.
AIR CLEANER FILTER REPLACEMENT* - Replace at
specified intervals. Ask your dealer for the proper replacement
intervals for your driving conditions.
FRONT WHEEL BEARING REPACK
(2-WHEEL DRIVE ONLY)
- Clean and repack the front wheel
bearings at each brake relining,
or at the specified interval, whichever
comes first.
* An Emission Control Service
7-7

Downloaded from www.Manualslib.com manuals search engine Periodic Maintenance Inspections
Listed below are inspections and services which should be perfo\
rmed at
least twice a year (for instance, each spring and fall). You should let your
GM dealer’s service department or other qualified service center do these
jobs. Make sure any necessary repairs are completed at once.
Steering and Suspension Inspection? - Inspect front and rear suspension
and steering system for damaged, loose or missing parts, signs of wear or
lack of lubrication. Inspect power steering lines and hoses for proper
hook-up, binding, leaks, cracks, chafing, etc. Lubricate the steering linkage.
Accelerator Control System - Lubricate all pivot points with engine oil,
except the
TBI throttle shaft. Do not lubricate the cam pulley. Remove all
external deposits from pulley.
Do not oil any accelerator or cruise control
cables. Replace any cables that have high effort or excessive \
wear.
Exhaust System Inspection - Inspect the complete system. Inspect the
body near the exhaust system. Look for broken, damaged, missing or
out-of-position parts, as well as open seams, holes, loose conn\
ections or
other conditions which could cause a heat buildup
in the floor pan or could
let exhaust fumes seep into the passenger compartments. See “\
Engine
Exhaust”
in the Index.
Drive Axle Service - Check readfront axle fluid level and add as needed.
Check constant velocity joints and axle seals for leaking.
Transfer Case (all-wheel drive) Inspection? - Every 12 months or at oil
change intervals, check front axle and transfer case and add l\
ubricant when
necessary. Oil the control lever pivot point (except
L Van) and all exposed
control linkage. Check vent hose at transfer case for kinks and proper
installation.
-F A fluid loss in these systems may indicate a problem. Have them inspected a\
nd
repaired
at once.
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