Engine Rear Support Insulator; Thermactor Air Pump Drive Belt; Replacement; Thermactor Air Bypass Valve Replacement - Ford COUGAR 1968 Shop Manual

ENGINE REAR SUPPORT
INSULATOR
PART 8-3
-
289
And 302 V-8
THERMACTOR AIR BYPASS
VALVE REPLACEMENT
R E M O V A L
1. Remove bolts and washers at-
taching insulator assembly to trans-
mission (Figs. 18 and 19).
2.
Raise the transmission with a
floor jack.
3. Remove bolts and washers at-
taching insulator assembly to cross-
member. Remove insulator assembly.
1. Install bolts and washers and
attach insulator assembly to cross-
member.
2.
Lower the transmission and re-
move jack.
3. Install bolts and washers at-
taching insulator assembly to trans-
mission. Torque to specifications.
THERMACTOR AIR PUMP
DRIVE BELT ADJUSTMENT
The air supply pump drive belt
should be properly adjusted a t 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 serv-
ice life of the belt. Therefore, a belt
tension gauge should be used to check
and adjust the belt tension. Any belt
that has operated for a minimum of
10 minutes is considered a used belt,
and, when adjusted, i t must be ad-
justed to the used belt tension shown
in the specifications.
1. Install the belt tension tool
(T63L-8620-A) on the drive belt
and check the tension following the
instructions of the tool manufacturer.
Compare the belt tension to the
specified belt tension (Part 8-5)
and adjust as necessary.
2. If adjustment is necessary,
loosen the air pump mounting and
adjusting arm bolts (Fig. 15). 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 bolt. D o not pry
against the pump housing. Remove
the gauge. Tighten the air pump ad-
justing arm and mounting bolt. In-
stall the tension gauge and check the
belt tension.
THERMACTOR AIR P U M P
DRIVE BELT REPLACEMENT
1. Loosen the air supply pump ad-
FIG.
78-Fairlane Falcon a n d
M o n t e g o Engine Rear S u p p o r t
I . Disconnect the air hoses and
vacuum line at the air bypass valve
body (Fig. 15).
2.
Be sure the valve is positioned
properly (Fig. 15) and connect the air
hoses and vacuum line.
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
supply hose.
THERMACTOR AIR MANIFOLD
R E M O V A L
1. 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 cylinder
head. Grasp the air manifold at each
end and pull it away from the cylin-
der head. Follow the same procedure
to remove the other air manifold, if
the engine is so equipped.
I N S T A L L A T I O N
A 2662-A
FIG.
79-Cougar a n d Mustang
Engine Rear S u p p o r t
justing arm bolt (Fig. 15). Loosen the
air supply pump to mounting bracket
bolt, and push the air pump towards
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. Always use a belt tension
gauge (Tool T63L-8620-A) to check
belt tension.
3.
Tighten the air supply pump
to mounting bracket bolt.
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 coup-
ng 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, ;ai; .supply-::tubes would
be replaced'($s .ne~es$ar.~ during cyl-
inder head o ' k i h a u ~ ; ~ An aii supply,
tube may be replaced without remov-
ing the air manifold and using a
hooked tool to pull the tube.
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;