Monaco CAYMAN 2007, Руководство пользователя

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CHASSIS INFORMATION - 10
181 CAYMAN 2007
WARNING:
Brake lining may contain asbestos
material and should only be serviced
by qualified service technicians who are
trained in the appropriate precautionary
procedures. If any loss of braking
effectiveness or abnormal braking
indications are noticed, the brakes and
slack adjusters should be inspected by a
qualified brake technician.
Brake Systems - Backup
The motorhome air braking system is
equipped with backup safety systems and
warning alarms in the event of air system
failure. For example: should the air compressor
fail to charge the air system and low air
gauge readings go undetected, a low air
pressure warning buzzer will sound and a
low air pressure dash warning indicator light
will fl ash. These warning indicators occur
at approximately 65 psi. This will alert the
operator of an impending situation. If the
motorhome is allowed continued operation,
the pneumatic emergency spring brake relay
valve, installed in the air system, senses the low
air pressure condition and will release the air
charge from the spring brake air chambers on
the rear drive axle. In this case, the park brakes
will automatically apply at approximately
30 psi. This safety backup system acts as an
automatic emergency brake system.
Another backup safety is the air system
separation of the front and rear brakes,
implemented by using two air tanks. One tank is
located in the front and the other is located in the
rear. This separation allows the front air tank to
operate the front brakes; the rear tank operates the
rear drive axle brakes. This tank division gives
reassurance in case one tank experiences a failure
of an accessory air item allowing the compressed
air to escape.
Accessory air items are other pneumatically
operated items such as the air horn, vacuum
generator, etc. The accessory air items operate
only when air tank pressures exceed 65 psi.
This is done with pressure protection valves.
Should an accessory air item fail, the pressure
protection valve (PPV) reserves the remaining
air pressure of 65 psi for braking. This will
leave the motorhome with one air tank fully
charged for safety backup.
The rear air tank also has a safety backup
- the safety inversion valve. The inversion
valve senses the absence of rear air tank
pressure. In this case the inversion valve
will allow the operator to make a modulated
spring brake application, made in conjunction
with the emergency spring brake relay valve.
The inversion valve allows the front air tank
pressure to recharge the rear brake chambers
after the modulated spring brake application
has been made. This backup system implements
use of all the brakes, allowing the operator to
bring the motorhome a safe stop. In case of all
compressed air charge escaping from the front
air tank, the operator will still have full use of
the rear brakes.
BRAKE - AUXILIARY
Auxiliary braking systems are designed to
supplement the standard wheel braking system.
These devices are not designed to bring the
motorhome to a complete stop; however,
they can assist in controlling the speed of the
motorhome. Use of the auxiliary braking system
can extend service life of brake linings .
Exhaust Brake
The exhaust brake switch (located on the
driver’s console) activates the auxiliary brake
integrated in the variable geometry turbocharger.
The dash mounted switch will operate the
auxiliary brake when dash switch is ON and
throttle is released.
When the auxiliary brake is activated, exhaust
pressure increases within the engine. Increased
exhaust back pressure slows the engine speed,
resulting in engine braking action. The amount
of engine braking power developed is related to
engine speed (RPM).
When the auxiliary brake is activated going
down a hill, it will help control road speed or
suffi ciently slow the road speed until the Allison
Transmission can automatically downshift to
the next lower gear. Downshifting automatically
occurs from high gear down to second gear.
Certain road conditions and engine speeds may
require the transmission be manually shifted
down in order to generate adequate engine RPM
and increase the engine brake effect.