Thermactor Air Pump Drive Pulley; Replacement; Thermactor Air Pump Centrifugal; F A N Replacement - Ford COUGAR 1968 Shop Manual

GROUP 8
-
Engine
THERMACTOR 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
pulley 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 adj-
just the belt tension (Section 3) to
specifications. Tighten the adjusting
arm and mounting bolts.., .
THERMACTOR AIR PUMP
CENTRIFUGAL FILTER F A N
REPLACEMENT
1. 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.
3. Pry the outer disc loose and
then pull off the centrifugal filter fan
as shown in Fig. 20; Care should be
taken to prevent fragments from en-
tering the air intake hole if the fan
breaks when removing. DO NOT
ATTEMPT TO REMOVE THE ME-
TAL DRIVE HUB.
4. Install the new filter fan by
drawing it into position, using the
pulley and bolts as an installer. Draw
the fan evenly by alternately tighten-
ing the bolts, making certain that the
outer edge of the fan slips into the
housing.
A slight amount of interference
with the housing bore is normal, and
some initial noise during run-in may
be expected.
.-FIG..
20-Thermactor Air Pump
Centrifugal Filter Fan Removal
THERMACTOR AIR SUPPLY
PUMP
REMOVAL
1. Disconnect the air outlet hose
at the air pump.
2. Loosen the adjusting 'arm to air
pump and air pump to mounting
bracket bolts to relieve the drive belt
tension.
3. Disengage the drive belt. Re-
move the mounting bolt and air pump.
INSTALLATION
1.
Position the air pump on the
mounting bracket and install the
mounting bolt.
2. Place the drive belt in the pul-
leys and attach the adjusting arm to
the air pump. Adjust the drive belt
tension to specifications and tighten
the adjusting arm and mounting bolts.
3. Connect the air outlet- hose to
the air pump.
THERMACTOR AIR PUMP
RELIEF VALVE REPLACEMENT
D o not disassemble the air pump to
replace the relief valve, but remove it
from the engine.
1.
Position Tool T66L-9A486-D on
the air pump and remove the relief
valve with the aid of a slide hammer
(T59L-100-B).
2. Position the relief valve on the
pump housing and hold Tool T66L-
9A486-B on the relief valve. Use a ham-
mer to tap the tool lightly until the
relief valve is seated.
THERMACTOR RELIEF VALVE
PRESSURE SETTING PLUG
REPLACEMENT
1. Compress the sides of the pres-
sure setting plug and remove with a
suitable tool.
2. Before installing the new plug,
be sure that the plug is the correct
one. The correct plug for this engine
should be color coded blue.
3. Insert ,the plug in the relief
valve hole and push the plug in until
it snaps into place.
VALVE ROCKER . A R M
ASSEMBLY
.
- ,
,
The valve rocker arm assembly,is
shown in Fig. 21.
REMOVAL
1 : To remove a valve rbcker'arm
ROCKER ARM
STUD NUT
6A529
R o c : f
A M
8 -
FULCRUM
SEAT
'
6A528
A 1634-C
.
.
FIG.
21-Valve Rocker Arm
Assembly
assembly from the right cylinder
head, disconnect the automatic choke
heat chamber air inlet hose at the
inlet tube near the right valve rocker
arm cover.
Remove the air cleaner and intake
duct assembly.
Remove the automatic choke heat
tube. Remove the crankcase ventila-
tion regulator valve from the valve
rocker arm cover.
T o remove the rocker arm cover(s)
on Thermactor engines, disconnect the
air hose(s) from the check valve(s),
then remove the check valve(s).
2. Disconnect the spark plug wires
from the spark plugs by grasping,
twisting and pulling the moulded cap
only. Remove the wires from the
bracket on the valve rocker' arm cov-
e r ( ~ ) and position the wires out of
the way.
3. Remove the valve rocker arm
cover(s). Before removing any valve
rbcker arm, check the torque requir-
ed to remove the adjusting nut. If
the torque is below specifications, re-
place the nut.
4. Remove the valve rocker arm
stud nut, fulcrum seat and rocker arm.
If removal of the rocker art stud is
necessary; refer to the procedure un-
der Cylinder Head Repairs in Part
8-1, Section
2.
INSTALLATION
1. Apply Lubriplate to the top of
the valve stem.
. - '
2. Apply lubriplate to the fulcrum
seat and socket, then install the valve
rocker arm, fulcrum seat and stud
nut. Adjust the. valve clearance- fol-
lowing the procedure in Part 8-1, Sec-
tion 2.