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90 BODY MANUAL
NOTE: It is not necessary to lower the top to check
fluid level. Since the top operating cylinders are dou-
ble action cylinders, the amount of fluid in the cylin-
ders remains constant.
Remove the plate from bottom of pump well and remove
fluid reservoir, Figure 147, If the fluid level is low, add
enough fluid to bring the fluid level up to the line on the
fluid reservoir. If the fluid is dirty, the system should be
drained as explained on Page 71, and new fluid substituted.
ELECTRICAL SYSTEM
CHECK
Inoperative solenoids or switches shorted, grounded, or
open circuits will cause failure of the electrical system as
will a low battery.
CIRCUIT BREAKER CHECK
If the hydraulic pump motor fails to operate when the top
operating knob is moved in or out, or when window
switches are moved to "up" position, electrical current
may not be entering the system. Use a test lamp to check
the current at the circuit breaker located under the instru-
ment panel to the left of the steering column. On Convert-
ible Broughams equipped with hydraulic window
regulators, a 30 ampere circuit breaker is provided in
addition to the standard 20 ampere circuit breaker. Apply
one lead of the test lamp to the battery (forward) terminal
of the standard circuit breaker, which is located above the
30 ampere circuit breaker, and ground the other lead. If
the lamp fails to light, no current is reaching the system
and the power lead to this terminal from the "BAT"
terminal of the voltage regulator should be checked for
short or open circuit.
If the lamp lights, move the test lead to the auxiliary (rear)
terminal. Failure of the lamp to light here indicates the
circuit breaker is faulty and should be replaced. Move test
prod to rear terminal of 30 ampere circuit breaker if car is
equipped with hydraulic window regulators. No light at
this point indicates faulty connection between "BAT"
terminal of 20 ampere, circuit breaker and "BAT" terminal
of 30 ampere circuit breaker.
When the test lamp lights from the rear terminal of the 30
ampere circuit breaker move probe to forward or "AUX"
terminal. No light at this point indicates faulty circuit
breaker.
WINDOW LIFT CONTROL
SWITCH CHECK
With current reaching the "AUX" side of the 30 ampere
circuit breaker, the pump motor should operate when
window switches are moved to "up" position. If motor
fails to operate, or if windows fail to open with switch in
"down" position, each switch should be removed and
checked.
NOTE: If motor operates when quarter window
switches are moved "up" but fails to operate from
door switches, a loose connection or broken wire at the
forward terminal on the top operating switch is indi-
cated.
The window control switches are held in place by
spring clips and may be removed by using Switch
Removing Tool No. KM0 685.
With terminals on back of switch exposed, ground one
lead of the test lamp and attach one lead to the center
terminal, marked "BAT". This terminal is normally "hot",
and the light should light with the switch control knob in
any position. With the knob in "up" position, the upper or
"MOT" terminal should light the test lamp. Current should
reach the lower or "CYL" terminal with the control knob
in both "up" and "down" positions.
TOP OPERATING SWITCH TEST
If top is up, unhook top from windshield header before
testing top operating switch.
Check adjustment of top control rod. The rod should
extend 1/8" through the retainer on the switch, and there
should be 1 3/8" clearance between the base of the top
control knob and the face of the
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