And Cougar; Position - Mustang And Cougar - Ford COUGAR 1968 Shop Manual

PART 16-2
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Air Conditioning
is not positioned as indicated, check
for vacuum a t the applicable vacuum
motor.
No vacuum should be present at the
A/C-defrost door motor and the re-
heat door motor. If vacuum is present,
check for improper (crossed) or leak-
ing hose connections a t the hose con-
nectors or the control assembly.
Vacuum should be present at the
outside recirculating door motor and
the heat door motor. If no vacuum is
present, check for improper (crossed)
or leaking hose connections at the
control assembly. If hose connections
are installed properly the control as-
sembly is faulty and should be replaced.
IF NOT OK
Connect vacuum lines to proper con-
trol assembly fitting, if required. Re-
place control assembly, if required.
Check doors for proper operation.
If no vacuum i s present at the A/C-
defrost door motor or the reheat door
motor, check the door operation by
hand for a binding or obstructed
condition.
If vacuum is present at the outside
door motor and the heat door motor,
check the operation
of
the door by
hand for a binding or obstructed con-
dition.
IF NOT O K
Correct the cause of obstruction or
bind condition (if required). Lubricate
door edges and plenum chamber con-
tact surfaces with Lubriplate. Lubri-
cate door pivot points. If door was
not obstructed or binding, replace the
applicable door motor. Check the
doors and control system for proper
operation.
FUNC'IIONAL CONTROL (LEFT)
LEVER DOES NOT OPERATE
A/C DOORS PROPERLY IN
FRESH POSITION-MUSTANG
AND COUGAR
Verify the complaint. Apply parking
brakes. Position the transmission lever
in neutral or park position. Operate
the engine at 1500 R P M . Position
functional control lever in the fresh
position and the blower on high speed.
Check the position of the doors to see
if they are as follows:
1. Outside-recirculating door-open
to outside air.
2. A/C-heat door-closed.
3. A/C-defrost door-open.
4. Reheat door-open.
If
the doors are not in the position
indicated above, check for specified
vacuum (14 inch HG) with the vac-
uum leak probe connected between the
vacuum tank line (black) and the vac-
uum tank. If vacuum is not to specifi-
cation at these locations, check for
vacuum component leakage between
the connector on the engine, check
valve, vacuum supply tank, and vac-
uum outlet line (black) a t the control
assembly.
I F NOT OK
Repair or replace (as required) faulty
component causing vacuum leakage.
Check the door operation.
Check the door positions. If a door
is not positioned as indicated above,
check for vacuum at the applicable
vacuum motor.
No vacuum should be present at the
outside-recirculating door motor, A/C-
defrost door motor and the reheat
door motor. If vacuum is present,
check for improper (crossed) or leaking
hose connections at the T-connector,
if so equipped, and at the control
assembly.
Vacuum should be present at the heat
door motor. If no vacuum is present,
check for improper (crossed) or leaking
hose connections at the control assem-
bly. If hose connections are installed
properly the control assembly is faulty
and should be replaced.
I F NOT OK
Connect vacuum lines to proper con-
trol assembly fitting, if required. Re-
place control assembly, if required.
Check doors for proper operation.
If no vacuum is present at the out-
side-recirculating door motor, A/C-
defrost door motor or the reheat door
motor, check the door operation by
hand for a binding or obstructed
condition.
If vacuum is present a t the heat
door motor, check the operating of
the door by hand for a binding or
obstructed condition.
IF NOT OK
Correct cause of obstruction or bind
condition (if required). Lubricate door
edges and plenum chamber contact
surfaces with Lubriplate. Lubricate
door pivot points.
If
door was not
obstructed or binding, replace the apr
plicable door motor. Check the doors
and control system for proper opera-
tion.
FUNCTIONAL CONTROL (LEFT)
LEVER DOES NOT OPERATE
A/C DOORS PROPERLY IN OFF
POSITION-MUSTANG AND
COUGAR
Verify the complaint. Apply parking
brakes. Position transmission lever
in
neutral or -park -position. Operate the
engine a t 1500 RPM. Position func-
tional control lever in the fresh posi-
tion and the blower on high speed.
Check the position of the doors to see
if they are as follows:
1. Outside-recirculating door-open
to recirc.
2. A/C heat door-open.
3. A/C-defrost door-closed.
4. Reheat door-closed.
If the doors are not in the position
indicated above, check for specified
vacuum (14 inch HG) with the vac-
uum leak probe connected between
the vacuum tank line (black) and the
vacuum tank.
If vacuum is not t o specification at
these locations, check for vacuum com-
ponent leakage between the connector
on the engine, check valve, vacuum
supply tank, and vacuum outlet line
(black) a t the control assembly.
IF NOT O K
Repair or replace (as required) faulty
component causing vacuum leakage.
Check the door operation.
Check the door positions. If a door
is not positioned as indicated above,
check for vacuum a t the applicable
vacuum motor.
No vacuum should be present a t the
A/C heat door motor. If vacuum is
present, check for improper (crossed)
or leaking hose connections at the
toe control assembly.
Vacuum should be present at the re-
heat door motor, outside recirculating
door motor, and the defrost door
motor.
If
no vacuum is present, check
for improper (crossed) or leaking hose
connections at the control assembly.
If hose connections are installed pro-
perly the control assembly is faulty
and should be replaced.