Table Of Contents - Ford COUGAR 1968 Shop Manual

Section Page
1 Description and Operation
...........................
8-57
Manifolds
..............................................
8-57
Cylinder Heads
.......................................
8-57
Cylinder Block
........................................
8-58
Valve Train
............................................
8-58
Lubrication System
..................................
8-60
Air Intake System
....................................
8-61
Cooling System
.......................................
8-61
Closed Crankcase Ventilation System
..........
8-62
Exhaust Emission Control Systems
.............
8-63
2 In-Vehicle Adjustments and Repairs
...............
8-64
Engine Front Support Insulators
................
8-64
Engine Rear Support Insulator
...................
8-65
Thermactor Air Pump Drive Belt
Adjustment
.. . . . .. ..
. . . . . . . . .
. . . . .. . . . . . . . . ..
. .
.
. . . .
8-65
Thermactor Air Pump Drive Belt
Replacement.,
...........................
.
........
8-65
Thermactor Air Bypass Valve
Replacement
.......................................
8-65
Thermactor Check Valve Replacement
.........
8-65
Thermactor Air Manifold
Replacement
... ......
...................
. .
8 - 6 5
Thermactor Air Supply Tube
Replacement
........................................
8-65
Thermactor Air Pump Drive Pulley
Section Page
Valve Rocker Arm Assembly
.....................
8-66
Intake Manifold
......................................
8-67
Exhaust Manifolds
..................................
8-68
Closed Crankcase Ventilation System
..........
8-68
Cylinder Heads
.......................................
8-69
Valve Spring, Retainer and Stem Seal
Replacement..
......
.................. ..
.
..........
8-7 1
Water Pump
. . .
. .. . .
. . . . . .
.
. . . . . .. . . .. .
.
.
. . . . ... . . . . . . .
8-7 1
Cylinder Front Cover and Timing Chain
......
8-71
Front Oil Seal Replacement
.......................
8-72
Camshaft
...............................................
8-73
Camshaft Rear ~ e a r i n g Bore Plug
Replacement
........................................
8-74
Valve Lifter Replacement
..........................
8-74
Valve Lifter Disassembly
...........................
8-75
Crankshaft Rear Oil Seal Replacement
. . .
. . . . .
8-76
Main and Connecting Rod Bearing
Replacement
........................................
8-76
Pistons and Connecting Rods
.....................
8-77
Flywheel..
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . .
. . . . . . . . . .
.
8-79
Clutch Pilot Bushing Replacement
..............
8-79
Oil Filter Replacement
.............................
8-80
Oil Pan
.................................................
8-80
o i l Pump
............. ..................................
8-81
3 Engine Removal and Installation
.. . . . .
..
.
. .. . . .. . . .
8-8 1
Replacement
........................................
8-66
4 Major Repair Operations
.............................
8-82
Thermactor Air Pump Centrifugal
Crankshaft
........................................
8-83
F a n Replacement
.................................
8-66
Camshaft Bearing Replacement
..................
8-84
Thermactor Air Supply Pump
....................
8-66
Cylinder Assembly Replacement
.................
8-85
Thermactor Air Pump Relief Valve
Cylinder Block Replacement
......................
8-85
Replacement
......................................
8-66
Engine Disassembly
.................................
8-86
Thermactor Relief Valve Pressure
Engine Assembly
.....................................
8-86
Setting Plug Replacement
.......................
8-66
1
DESCRIPTION AND OPERATION
The 289 and 302 V-8 engines are
shown in F i g s
1
through 3. Differences
in the engines are called out when
they exist.
An engine identification tag is lo-
cated behind the oil dipstick mount-
ing bracket washer. Refer to Part 8-1,
Section I, for engine tag code.
The 289 and 302 V-8 engines use
either the Thermactor or Imco exhaust
emission control system to keep ex-
haust gas contaminants at an accept-
able level. Engines with standard trans-
mission vehicles incorporate. the
Thermactor exhaust emission control
system. On vehicles with an automatic
transmission, the Imco exhaust emis-
sion control system is used. The carbu-
retors and distributors are not inter-
changeable between these two types
of engines, due to special calibrations
for each exhaust emission control sys-
tem. For a detailed description refer
to Exhaust Emission Control Systems
in this section.
An improved closed crankcase ven-
tilation system controls air pollutants
emitted by the crankcase ventilating
system.
MANIFOLDS
Coolant flows from the front of the
engine through the intake manifold
into the heater inlet hose and circu-
lates through the heater. On vehicles
that d o not have a heater, the cool-
ant is, *urned to the water pump
through a bypass hose.
Exhaust gases flowing through the
crossover passage (Fig. 4) provide
the initial heat necessary to assist in
vaporizing the incoming fuel mixture.
The intake manifold has two sets
of fuel passages, each with its own
separate inlet connection t o the car-
buretor (Fig. 5). The right venturi(s)
of the carburetor feeds Nos. 1, 4, 6
and 7 cylinders and the left venturi(s)
feeds Nos. 2, 3, 5 and 8 cylinders.
Exhaust manifolds are mounted to
the cylinder heads. Combostion pres-
sure in the cylinder heads forces
engine exhaust gases through the ex-
haust manifolds into the exhaust
system.
Filtered air for the automatic choke,
is drawn from the air cleaner, through
an air inlet tube, into the heat cham-
ber in the right exhaust manifold.
Here the air is heated and then di-
rected to the automatic choke through
the air outlet choke tube (Fig. 6).
CYLINDER HEADS
The cylinder head assemblies con-
tain the valves and the valve rocker
arm assemblies. The valve guides and
push rod guides are machined in the
head with a cast combustion cham-
ber. The valve arrangement from
front to rear on the left bank is
E-I-E-I-E-I-E-I and on the right bank
I-E-I-E-I-E-I-E (Fig. 7).