Cylinder Heads - Ford COUGAR 1968 Shop Manual

PART 8-3
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289 And 302 V-8
I
A I R C O N D I T I O N E D
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( 2 - V )
M O D E L S O N L Y
FIG.
24-Closed Crankcase Ventilation Systemcomponents
carburetor spacer regulator valve
and hot idle compensator (if so equip-
ped).
3. Install the air cleaner and in-
take duct assembly.
4. Install the closed ventilation
system air intake hose to the air clean-
er and the oil filler cap.
5. Operate the engine and check
for leaks.
CYLINDER HEADS
If a cylinder head is to be re-
placed, follow the procedures under
Cylinder Head Disassembly and As-
sembly, and transfer all valves,
springs, spark plugs, etc., to the new
cylinder head. Clean and inspect all
parts, reface the valves (refer to Part
8-1) and check all assembly clear-
ances before assembling the new or
used parts to the new cylinder head.
REMOVAL
1. Remove the intake manifold
and carburetor as an assembly fol-
lowing the procedure under Intake
Manifold Removal.
2. Disconnect the battery ground
cable at the cylinder head.
If the left cylinder head is to be
removed, on a vehicle with an air con-
ditioner, isolate and remove the
compressor as outlined in Group 15.
If the left cylinder head is to be
removed, on a vehicle with power
steering, disconnect the power steering
pump bracket from the left cylinder
head and remove the drive belt from
the pump pulley. Position the power
steering pump out of the way and
in a position that will prevent the
oil from draining out.
On a Thermactor engine, discon-
nect the air hose(s) from the check
valve(s). Remove the check valve(s).
Remove the air bypass valve, air pump
and bracket if the right cylinder head
is being removed.
3. If the right cylinder head is to
be removed, remove the alternator
mounting bracket bolt and spacer,
ignition coil and air cleaner inlet
duct from the right cylinder head
assembly.
4. Disconnect the exhaust mani-
fold(~) at the muffler inlet pipe(s).
Remove the rocker arm covers.
5. Loosen the rocker arm stud
nuts so that the rocker arms can be
rotated t o the side. Remove the push
rods in sequence (Fig. 25) so that
they may be installed in their origi-
nal positions.
6. Install the cylinder head hold-
ing fixtures (Fig. 26). Remove the
cylinder head retaining bolts and
lift the cylinder head off the block.
Remove and discard the cylinder
head gasket.
FIG.
25-Valve Push Rod Removal
FIG.
26-Cylinder Head Holding
Fixtures
INSTALLATION
1.
Clean the cylinder head, intake
manifold, valve rocker arm cover
and cylinder block gasket surfaces.
If the cylinder head was removed
for a cylinder head gasket replace-
ment, check the flatness of the cylind-
der head and block gasket surfaces.
2. On the 289 and 302 V-8 engines
a specially treated composition gasket
is used. Do not apply sealer to a
composition gasket. Position the new
cylinder head gasket over the cylin-
der dowels on the block. Position the
cylinder head on the block and install
the retaining bolts. Remove the hol-
ing fixtures.
3. The cylinder head bolts are
tightened in three progressive steps.
Torque all the bolts in sequence (Fig.
27) of 50 ft-lbs., then to 60 ft-lbs.,
and finally to specifications. When
cylinder head bolts have been tight-