Trouble Shooting-Lotked On Upper Beam Or No Over-Ride - Lincoln Continental 1964 Shop Manual

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PART 16-1-GENERAL VENTILATING, HEATING, AND ACCESSORIES SERVICE
16-9
AUTOMATIC HEADLIGHT
DIMMER
PRELIMINARY TEST
1. Turn the headlamps to the full
ON position. (Allow about 30 sec-
onds for the headlight dimmer to
warm up.) With the car in a lighted
area, the lights should be on low-
beam regardless of the position of
the foot switch.
(If
upper-beam is
obtained in one position of the foot
switch, check the fuse.)
2. Depress the foot switch about
Yx -inch to the detent. The lights
should change to the upper-beam
and then change back to the lower-
beam when the foot switch is re-
leased, if the foot switch is in the
Automatic position. If not. cycle
the foot switch to obtain the auto-
matic position.
3. Place a hand or a dark cloth
over the phototube unit. The lights
should switch to the upper-beam.
Remove the cloth or hand. The lights
should change back to the lower-
beam. (The unit will not go to upper-
beam if the phototubc unit tempera-
ture is above 90° F. Therefore, check
to see if the phototube is hot. If it
is, allow it to cool and repeat the
above checks.)
If the headlights operate as ex-
plained in steps 1, 2, and 3, the de-
vice should operate correctly with
the proper aiming and sensitivity ad-
justments. If the lights do not operate
as described in the above steps, refer
to Figs. 7 and 8.
LOCKED ON IIIPPU HAM
[
·; HEAOlAMPS SWITCH TO LOWER BEAM,
rROUBLE
IS
IN PHOTOTUBE UNIT. REMOVE
BOTH THE PHOTOTUBE AND AMPLIFIER
I'OR REPAIR.
------------------~
NOOVU.RIDI
PLACE FOOTSWITCH IN AUTOMATIC POSJnON,
UNCOVER THE PHOTOTUBE UNIT. DISCONNECT
AND GROUND THE RED WIRE AT THE FOOT-
SWITCH
IF OPERATION OF SOTH UPPER AND LOWER
BEAM IS
OBTAINED, TROUBLE IS IN AMPLIFIER
UNIT. REMOVE ONLY THE AMPLIFIER FOR
REPAIR.
K1541-A.
FIG. 8-
Trouble Shooting-Lotked on Upper Beam or No Over-Ride
EJ
COMMON ADJUSTMENTS AND REPAIRS
(NOT APPLICABLE)
SEE IN-CAR ADJUSTMENTS
AND REPAIRS (PART 16-2)
EJ
CLEANING AND INSPECTION
VENTILATING AND HEATING
When installing a new vents-heater
valve or a regulator valve, inspect for
dirt cllld foreign objects. Aho, check
to be sure the vacuum hoses arc
clean and not pinched or cracked.
Be sure the pointer is not bent or
rubbing.
Whenever the battery ground cable
i:--.
removed, make certain the cable
cl.m1p and the battery terminal post
'' r ,. clean and dry before assembly.
AIR CONDITIONING
On a compressor dutch installa-
tliln, carefully remove any burrs or
d
1
rt that may be on the compressor
skdt. The shaft must he dry and
t~r
rghtly polished. Then install the
key in the shaft.
When the compressor is disassem-
bled, completely clean all gasket sur-
faces of shreds and foreign objects.
If the compressor shaft seal is
being replaced, inspect the compres-
sor internally and clean out dirt or
chips as required.
Sec also ventilating and heating,
this section.