Chevrolet Light Duty Truck 1973 Service Manual page 341

WEIGHT
ASSEMBLY
VACUUM
ASSEMBLY
ACCESS PASSAGE
FOR ENGINE OIL
FUMES
GEAR
Fig. 5—Distributor (V8)
will indicate the need for further tests and adjustments
as outlined in Section Y.
6
SERVICE BELTS (FIG. 8 )
Inspect belt condition.
Check and adjust if necessary for correct tension of belt,
as follows:
• Using a strand tension gauge, check the belt tension.
• If belt is below the minimum, adjust until the
specified tension, is reached. (See Tune Up Chart in
Specification section.)
SERVICE MANIFOLD HEAT
VALVE (FIG. 9 or 1 0 )
Check manifold heat control valve for freedom of
operation. If shaft is sticking, free it up with GM
Manifold Heat Control Solvent or its equivalent.
NOTE: Tap shaft end to end to help free it
up.
TIGHTEN MANIFOLD
Tighten intake manifold bolts to specifications in the
sequence outlined on Torque Sequence Chart located at
end of Engine Mechanical section. A slight leak at the
intake manifold destroys engine performance and
economy.
ROTOR
R.F.I. SHIELD
CIRCUIT BREAKER
L i
PLATE ASSEMBLY
PERMANENT
LUBRICATION
RESERVOIR
DISTRIBUTOR
HOUSING
SHAFT
BUSHING
LATERAL
MISALIGNMENT
CORRECT LATERAL MISALIGNMENT BY
BENDING FIXED CONTACT SUPPORT
NEVER BEND BREAKER LEVER
Fig. 6—Point Alignment
HOLD
DO NOT SUCK
TUBE
IN TOO MUCH
VERTICAL
ELECTROLYTE
FLOAT MUST-----
BE
Fig. 7—Testing Specific Gravity of Battery
SERVICE FUEL LINES AND FUEL
FILTER
1. Inspect fuel lines for kinks, bends or leaks and
correct any defects found. Refer to Section
correct fabrication and replacement procedures for
fuel lines.
2. Inspect filter and replace if plugged.
NOTE: If a complaint of poor high speed
performance exists on the vehicle, fuel pump
tests described in Section
performed.
SERVICE COOLING SYSTEM
1. Inspect cooling system for leaks, weak hoses, loose
hose clamps and correct coolant level, and service
as required.
NOTE: A cooling system pressure test, as
described in "Additional Checks and Adjust­
ments" in this section, may be performed to
EN G IN E 6-5
PROPER
LATERAL ALIGNMENT
II' -' 1
If . 1 1
' " J
TAKE READING
AT EYE LEVEL
for the
8
M should be
6
LIGHT DUTY TRUCK SERVICE MANUAL