Ford COUGAR 1968 Shop Manual page 383

PART 8-4
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390 And 427 V-8
E N G I N E R E A R S U P P O R T
I N S U L A T O R - M U S T A N G
A N D C O U G A R
The engine rear support insulator
is shown in Fig. 24.
Removal
1.
Raise the vehicle on a hoist.
2. Place a jack under the transmis-
sion.
3. Remove the bolts and nuts re-
taining the crossmember. to the side
supports and to the engine rear sup-
port insulator. Remove the cross-
member.
4. Remove the retaining bolts and
remove the rear support insulator
from the transmission extension hous-
ing.
Installation
1. Position the support insulator to
the transmission extension housing
and install the retaining screws. Tor-
que the screws to specifications.
2.
Position the crossmember (note
letter R stamped on the flange indi-
cating rear), and install the retaining
bolts and nuts at both the side sup-
ports and at the rear support. Torque
the bolts and nuts to specifications.
3. Remove the jack and lower the
vehicle.
THERMACTOR AIR P U M P
DRIVE BELT ADJUSTMENT
The air supply pump drive belt
should be properly adjusted at all
times. A loose drive belt causes im-
proper air pump operation: A belt
that is too tight places a severe
strain on the. air pump bearings.
Properly tensioned drive. belts
minimize noise and also prolong ser-
vice life of the belt. A belt tension
gauge should be used to check and ad-
just the belt tension. Any belt that
has operated for a minimum of 10
minutes is considered a used belt,
and when adjusted, it must be ad-
justed t o the tension shown in the
specifications for used belts.
B E L T TENS1O.N
1. Install the belt tension tool
(T63L-8620-A) on the drive belt and
check the tension following the in-
structions of the tool manufacturer.
Compare the belt tension tb the
specified belt tension and adjust as
necessary.
2. If adjustment is necessary,
loosen the air pump mounting and
adjusting arm bolts (Fig. 19). Move
the air pump toward or away from
the engine until the correct tension
is obtained.
Use a suitable bar and
pry against the pump rear cover
to
hold belt tension while tightening the
mounting bolts. D o not pry against
the pump housing. Remove the gauge.
Tighten the air pump adjusting arm
and mounting bolts. Install the tension
gauge and check the belt tension.
THERMACTOR AIR P U M P
DRIVE BELT REPLACEMENT
I. Loosen the air supply pump
adjusting arm bolt. Loosen the air
supply pump to mounting bracket nut
and bolt, and push the air pump to-
wards the cylinder block. Remove the
drive belt.
2.
Install a new drive belt. With
a suitable bar,
pry against the rear
cover of the air pump
to obtain the
specified belt tension (refer to Part
8-5), and tighten the adjusting arm,
bolt.
D o not pry against the pump
housing.
Adjust the belt tension
(refer to Part 8-5) as necessary. Al-
ways use a belt tension gauge (Tool
T63L-8620-A) to check belt tension.
3.
Tighten the air supply pump to
mounting bracket bolt and nut.
THERMACTOR AIR
BYPASS VALVE REPLACEMENT
1.
Disconnect the air and vacuum
hoses at the air bypass valve (Fig. 19).
Remove the bypass valve.
2. Position the air bypass valve
(Fig. 19), and connect the air and
vacuum hoses.
THERMACTOR CHECK VALVE
REPLACEMENT
1. Disconnect the air supply hose
at the valve. Use a 1-114 inch crow-
foot wrench to unscrew the check
valve assembly (the valve has a stan-
dard. right-hand pipe thread).
2.
Clean the threads on the air
manifold adapter with a wire brush.
Install the check valve and torque it
to specifications. Connect the air sup-
ply hose.
THERMACTOR AIR M A N I F O L D
R E M O V A L
I. Disconnect the air supply hose
at the check valve and position the
hose out of the way.
2.
Loosen all of the air manifold
to cylinder head tube coupling nuts
(compression fittings). Then unscrew
each one until it is free of the cylin-
der head. Grasp the air manifold at
each end and pull it away from the
cylinder head. Follow the same pro-
cedure to remove the other air mani-
fold.
I N S T A L L A T I O N
I. Position the air manifold(s) on
the cylinder head. Be sure all the tube
coupling nuts are aligned with the
cylinder head. Screw each coupling
nut into the cylinder head I to 2
threads. Tighten the tube coupling
nuts.
2.
Connect the air supply hose to
the air manifold.
THERMACTOR AIR SUPPLY
TUBE REPLACEMENT
Normally, air supply tubes would be
replaced as necessary during cylinder
head overhaul. A supply tube may be
replaced without removing the cylinder
head by removing the air manifold
and using a hooked tool to pull the
supply tube.
For cleaning and inspection, refer
to Part 8-1, Section 3. Additionally,
the air supply tubes could be inspected
for badly eroded tips with the aid of
a mirror, when the exhaust manifold(s)
is removed.
AIR P U M P DRIVE PULLEY
REPLACEMENT
1. Loosen the air supply pump
adjusting arm and mounting bolts to
relieve the belt tension.
2.
Remove the drive pulley at-
taching bolts and pull the drive pul-
ley off the air pump shaft.
3. Position the drive pulley on the
air supply pump shaft, and install
the retaining bolts. Torque the bolts
to specifications.
4. Position the drive belt and ad-
just the belt tension (Part 8-5) to
specifications. Tighten the adjusting
arm and mounting bolts and nuts.
THERMACTOR AIR P U M P
CENTRIFUGAL FILTER F A N
REPLACEMENT
I. Loosen the air supply pump ad-
justing arm bolt and mounting bracket
bolt to relieve drive belt tension.
2.
Remove the drive pulley attach-
ing bolts and pull the drive pulley off
the air pump shaft.