1994 CHEVROLET ASTRO PASSENGER change wheel

Downloaded from www.Manualslib.com manuals search engine Rear Axle
When to Check and Change Lubricant
Refer to the Maintenance Schedule to determine how often to check the
lubricant and
when to change it. See “Scheduled Maintenance Services” in
the Index.
How to Check Lubricant
. .... ... I..
If the level is below
the bottom of the filler
plug hole, you’ll need
to add some lubricant.
Add enough lubricant
to raise the level to the
bottom of the filler
plug hole.
What to Use
Refer to the Maintenance Schedule to determine what kind of lubricant to
use. See “Recommended Fluids and Lubricants”
in the Index.
All- Wheel IDrive
If you have an all-wheel drive vehicle, be sure to perform the lubricant
checks described in this section. However, they have two additional systems
that need lubrication.
Transfer Case
When to Check Lubricant
Refer to the Maintenance Schedule to determine how often to check the
lubricant. See “Periodic Maintenance Inspections” in the Index.
6-24

Downloaded from www.Manualslib.com manuals search engine Capacities and Specification Charts
Replacement Parts
Replacement part numbers listed in this section are based on the latest
information available at the time of printing, and are subject to change. If a
part listed in this manual is not the same as the part used in your vehicle
when
it was built, or if you have any questions, please contact your GM
truck dealer.
Engine Identification
Engine Description
Type VIN Code
Fuel System
Produced By
Emissions
*Throttle Body Fuel Injection
**Central
Port Fuel Injection
Wheel Nut Torque
DESCRIPTION
Base or Optional Wheel
4.3L
V6
Z
TBI*
U.S.
L.D.
6-68
4.3L
V6
W
CPI* *
U.S.
L.D.
TORQUE
100 ft. lbs. (140 Nom)

Downloaded from www.Manualslib.com manuals search engine MAlNTENANCE SCHEDULE I/
Item Miles (000) 7.5 15 22.5 30
No. Kilometers (000) 12.5 25 37.5 50
Service
Oil Filter Change*- 12 Months, or
1 12 Months, or I 1 1 I
2 Chassis Lubrication-Every
3 Cooling System Service*
-Every
24 Months or
4 I Air Cleaner Filter Replacement* I I I I 0
5 Front Wheel Bearing Repack
(2WD Only) 0
6 Transmission Service **
7 Fuel Filter Replacement*$ 0
8 Spark Plug Replacement* 0
9 Spark Plug Wire Inspection*
10 Engine Timing Check*$
11 Fuel Tank, Cap and Lines
12 Engine Accessory Drive Belt
13 Tire and Wheel Rotation
0 0
14 Drive Axle Service 0.00
15 Brake Systems Inspection** Inspection*$
Inspection”
* An Emission Control Service
** See “Explanation of Scheduled Maintenance Services” in the Index
$ The California Air Resources Board has determined that the fail\
ure to perform this
maintenance item will not nullify the emission warranty or limi\
t recall liability prior
to the
completion
of vehicle useful life. General Motors, however, urges that all recommended
maintenance services be performed at the indicated intervals and\
the maintenance be
recorded.
THE SERVICES SHOWN
ON THIS CHART UP TO 60,000 MILES (100 000 km) ARE TO BE
DONE AFTER
60,000 MILES AT THE SAME INTERVALS.
TI 003
7-6

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 13. TIRE AND WHEEL ROTATION AND INSPECTION - For
proper wear and maximum tire life, rotate tires at the first
6,000 miles
(10
000 kilometers) for Schedule I or 7,500 miles (12 500 kilometers)
for Schedule I1 and
then every 15,000 miles (25 000 kilometers)
thereafter. Follow the instructions and patterns shown in Sectio\
n
6.
Check tires for uneven wear or damage. If irregular or premature wear
is apparent, check wheel alignment. Also, check for damaged wheels.
See “Tires” in the Index for more information.
14.
DRIVE AXLE SERVICE - Check readfront axle fluid level and add
as needed. Check constant velocity joints and axle seals for leaking.
Locking Differential - Drain fluid at first oil change and refill.
Check fluid level and add as needed at subsequent oil changes. In
dusty areas or trailer towing applications, drain fluid at every
15,000 miles (24 135 kilometers) and refill.?
Standard Differential - Check fluid level and add as needed at
every oil change. In dusty areas or trailer towing applications\
,
drain fluid every
15,000 miles (24 135 kilometers) and refill.?
15. BRAKE SYSTEM INSPECTION - When the engine oil is changed,
inspect the lines and hoses for proper hookup, binding, leaks, cracks,
chafing, etc. Check the parking brake adjustment, and the fluid\
level in the master cylinder. A low fluid level can indicate
worn disc brake pads
which may need to be serviced.?
When the wheels are removed for rotation, inspect disc brake pads for
wear and rotors for surface condition. Also inspect drum brake linings
for wear and cracks. Inspect other brake parts, including drums, wh\
eel
cylinders, parking brake, etc. at the same time.
Inspect brakes more often if driving habits or conditions resul\
t in
frequent braking.
-f A fluid loss in these systems may indicate a problem. Have them inspected a\
nd
repaired at once.
7-9

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.
7- 12

Downloaded from www.Manualslib.com manuals search engine Loading Your Vehicle ........................................ 644
Lubrication ..................................................... 6-42
Accelerator Control System ..................................... 6-42
Body ....................................................... 6-42
Sliding Door Tracks ........................................... 6-42
Front Suspension and Steering Linkage ........... ............. 6-41
Front Wheel Bearings (Two Wheel Drive) .......................... 6-41
LatchesandHinge ............................................ 6-42
Lock Cylinders ............................................... 6-43
Rear Axle ................................................... 6-24
Transfer Case ................................................ 6-24
Luggagecarrier ................................................. 2-65
Maintenance ...... ................................. 7-2
OtherItems ................................................ 6-41
Periodic Inspections ........................................... 7-12
Record ...................................................... 7-15
Scheduled Maintenance ..................................... 7-3, 7-7
Underbody .................................................. 6-61
When Towing a Trailer ......................................... 4-23
Mirrors ....................................... ............. 2-45
Inside .............. ................................ 2-45
Outside ................................................... 2-46
Vanity ...................................................... 2-47
ModelReference .................................................. 111 ...
Odometer ................................................ 2-54
Trip ........................................................ 2-54
Off-RoadRecovery ............................................... 4-9
Oil ............................................................ 6-9
Additives .................................................... 6-14
Disposal of Used .............................................. 6-14
PressureGage ................................................ 2-62
ToCheck .................................................... 6-10
WhatKindtoUse ............................................. 6-11
Whentochange .............................................. 6-14
Owner Checks and Services .................... ............. 7-10
Parking
Brake
....................................................... 2-20
OnHills ..................................................... 4-29
Passing ........................................................ 4-10
Payloadcapacity ................................................ 6-46
Power Over
Things That Burn
......................................... 2-23
Periodic Maintenance Inspections ................................... 7-12
Mirrors ..................................................... 2-46
Seat ......................................................... 1-3

Downloaded from www.Manualslib.com manuals search engine Publications ................................................... 8-7
Replacement Part/Filter Recommendations
......................... 6-74
StationsChecks
............................................... 7-16
Servicing Your Facial Air Bag-Equipped Vehicle
....................... 1-29
Shifting Into P (Park)
............................................. 2-21
Shifting Out Of P (Park)
.......................................... 2-22
Single Belt Accessory Drive
....................................... 641
SpareTire ...................................................... 5-32
Specification Charts
.............................................. 6-68
Springs. Fiberglass
............................................... 6-61
Starting Your Engine
................................ ... 2-14
Steering
In Emergencies
................................................ 4-7
Tips
......................................................... 4-8
Storage Compartments
............................................ 2-50
Storing the JacMSpare Tire
........................................ 5-31
Sunvisors
..................................................... 2-47
Speedometer
.................................................... 2-53
T
Theft .......................................................... 2-11
Thermostat
..................................................... 6-29
TiltWheel
...................................................... 2-29
Tires
.......................................................... 647
Chains
...................................................... 6-54
Changing A Flat
......................................... 5-18. 5-24
Compact Spare
............................................... 5-32
Inspection and Rotation
........................................ 649
Loading
..................................................... 6-44
New
........................................................ 6-50
Pressure
..................................................... 6-48
TopStrap
...................................................... 1-38
Towing Your Vehicle
.............................................. 5-7
TowingATrailer
................................................ 4-23
Backingup
.................................................. 4-28
Uniform Tire Quality Grading
................................... 6-51
Following Distance
............................................ 4-28
Making Turns
................................................ 4-28
Turnsignals
................................................. 4-28
Brakes
...................................................... 4-26
WiringHarness
.......................................... 2-66. 6-66
Transfercase
................................................... 6-24
AddFluid
................................................... 6-23
CheckFluid
.................................... .......... 6-20
TorqueLock
................................................. 2-23
Trailer
Trailering Package
............................................... 646
Transmission. Automatic
.......................................... 2-17
Trip Odometer
.................................................. 2-54
Turn SignaYMultifunction Lever
.................................... 2-30
Lane Change Indicator
.................................... 2-30. 2-61
8
.