Chevrolet 1963 Corvette, Руководство по ремонту и настройке

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ENGINE AND ENGINE REBUILDING f 13
20. Disconnect the fuel return line at the
rear TBI unit.
21. Remove the power brake booster line.
22. Disconnect the accelerator and cruise
control cables, unbolt the cable bracket from
the manifold and tie the cable and bracket
assembly out of the way.
23. Disconnect the air injection hose at the
check valve and the air control valve.
24. Unbolt the air injection pump and
move it out of the way.
25. Disconnect the positive crankcase
ventilation valve hose at the manifold and
move the hose aside.
26. Mark and disconnect any vacuum hoses
which will interfere with removal of the man
ifold.
27. If you plan on removing the TBI units
from the upper manifold pkte, remove the
fuel balance tube (connecting the units) at this
time.
28. Remove the bolts which attach the up
per manifold plate (or TBI plate) to the intake
manifold. Lift the TBI and plate assembly off
of the intake manifold.
29. Remove the distributor as previously
outlined.
30. Disconnect the upper radiator hose
from the thermostat housing.
31. Disconnect the heater hose from the
intake manifold.
32. Remove the intake manifold-to-cylin
der head bolts and lift the intake manifold as
sembly off of the engine.
33. Installation is the reverse of removal
procedures. Note the following points when
installing the manifold:
a. Components originally sealed with
RTV sealer must be resealed with RTV.
Conversely; if no RTV was used originally,
it is not necessary to use during assembly.
b. It IS NOT necessary to remove all old
RTV before applying the new RTV; just re
move the loose pieces and seal over the re
maining RTV. If the RTV must be applied
around bolt holes, run the bead of RTV on
the inside of the holes.
c. If available, use sealing tape on the
threads of male fuel line fittings during as
sembly.
d. Replenish die cooling system with the
proper amount and quality of coolant.
e. Before starting the engine, make sure
that the throttle return springs are con
nected properly and the linkage does not
bind in any way.
f. If disturbed during manifold re-
moval, adjust the drive belt(s) to recom-
mended tension.
g. After the engine is started, check for
leaks and readjust the ignition timing, if
necessary.
Exhaust Manifold
REMOVAL AND INSTALLATION
1. If equipped with an air injection mani
fold attached to the exhaust manifold, re
move the air injection manifold according to
the procedure outlined in the Emission Con
trol section.
2. Raise the front of the vehicle and sup
port it safely with jackstands.
3. Soak the exhaust manifold flange studs
with penetrating lubricant and remove the
flange nuts. Lower the exhaust pipe from the
manifold and tie the pipe out of the way.
NOTE: On later models equipped with a Y
pipe, it may be necessary to unbolt the pipe
from both manifolds. 4t,
Lower the
vehicle.
5. Remove the spark plug radio interfer
ence shielding, if so equipped. Mark and dis
connect the spark plug wires from the plugs
and remove the spark plugs and plug heat
shields. Disconnect the oxygen sensor, if
equipped. Do not allow penetrating oil to
contaminate sensor.
6. Unbolt the manifold, working from the
outer bolts towards the inner bolts to prevent
manifold warpage.
NOTE: On some 1974-76 models, it may
be necessary to raise the right side of the
engine to remove the right hand exhaust
manifold. To do this, unbolt the fan shroud
(but do not remove it), remove the right side
engine mount through-bolt, and raise the
right side of the engine using a jack with a
block of wood between the jack and the oil
pan.
Installation is the reverse of the previous
steps. If the engine used gaskets between the
exhaust manifold and the cylinder head, re-
place the gaskets. Repkce the manifold-to-
exhaust pipe seal(s). Be sure that all of the
mating surfaces are clean. If the threads of
the exhaust manifold studs are rusted, use a
thread chaser on the studs before installing
the manifold.
Timing Chain Cover
REMOVAL
1. Disconnect the battery cables at the
battery.