MCi Crusader II 1989 Maintenance Manual page 231

Date
1-1-89
Page
7-11
MC-9 MAINTENANCE MANUAL
ADJUSTING SCREW
Figure 7-24. Alarm Buzzer.
ALARM BUZZERS
The alarm system buzzers are mounted in a sealed.
external junction box below the driver's window. The buzzers
are for low air, hot engine, low water. and low oil pressure
conditions.
NOTE: Activate each circuit and adjust
buzzer for desired sound. To increase
sound, tum adjusting screw clockwise; coun-
terclockwise
lo
decrease. Refer to figure
7-24 for adjusting screw.
The manufacturer's specified range 1s between 65 and 75
decibels. The factory setting 1s 75 decibels.
VOLTMETER
A voltmeter is installed in the lower center opening of the
instrument panel cluster to provide a voltage system reading.
Refer to wiring diagram at the end of this section.
Figure
7•24A.
Voltmeter.
TURN SIGNAL
&
TAIL LAMPS
The stop, turn signal and tail lamps are mounted in castings
at the rear corners of the coach.
The turn signal lamps are amber colored; the tail lamps are
~d. Both of these units are sealed and are serviced as units;
there 1s no bulb or lens. l"hese units are held in the casting by
means of a heavy rubber gasket. and are simply snapped in or
out of the gasket.
STOP LAMPS
The stop lamps each ·consist of a spring-loaded socket for
the bulb, and a red reflective lens housing. To service the bulb,
remove the 4 screws which mount the lens housing to the
casting, pull out the lens and remove the socket from the rear
of the lens. To remove the socket from the lens housing, push
the socket inward, and twist
it
until the tangs on the socket are
in line with the slots in the lens housing. The socket will now
pop out. The bulb is removed in a similar fashion from the
socket. Push the bulb downward into the socket, and twist it a
quarter turn. Release pressure against the bulb and it should
be free. See lamp specifications at end of this section for
correct replacement bulb.
The stop lamps are illuminated when the service brakes are
applied.
HEADLIGHTS
DESCRIPTION
The headlights are double filament "sealed beam" type
and operate on a 12V circuit.
Switch marked "Headlights" mounted in the driver's switch
panel to the left of the driver controls headrights. High or low
headlight beam is selected by means of a floor-mounted
dimmer switch. When high beams are on, a tell-tale light
marked "Hi Beam" on the instrument panel will glow.
MAINTENANCE
Clean with water and a good glass cleaner whenever dirty.
For maximum illumination headlamps. must not be
blackened and proper voltage must be maintained. Low
battery, loose or dirty electrical contacts in wiring system and
poor ground all contribute to a decrease in voltage. Check
wiring and connections regularly and keep battery properly
charged. When headlamp burns out, a complete new sealed
beam unit must be installed.
REMOVAL
Remove bezel retaining screws and remove bezel.
Removing. three screws which hold sealed beam unit in
housing. Pull unit out of housing. Disconnect plug-in socket
Install new sealed beam unit reversing above procedure.
HEADLIGHT ADJUSTMENT
Headlights must be aimed carefully and accurately to
assure safe vehicle operation at night. Adjustments can be
made quickly and accurately with a headlight tester. However.
if equipment is not available. make adjustments as described
below.
(A) Place vehicle on level floor so headlights are 25 feet
(7.6 m) from a smooth vertical surface perferablyof light color.
A door or wall is suitable. Center line of vehicle should be
perpendicular to this vertical surface.