Alexander Dennis Trident 2, Operation Manual

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General Description
The Alexander Dennis two axle Trident
is, powered by a 6 cylinder turbo
charged diesel engine driving a portal
rear axle through a three or five speed
automatic transmission.
The air operated braking system is
powered by an engine-driven
compressor supplying five reservoirs
through an air dryer which also
regulates pressure.
Service One and Service Two
reservoirs each supply a separate
system for the brakes on the front and
rear drive axles. The park reservoir
supplies the spring-applied, air
released brakes on the Drive axle. The
Auxiliary reservoirs supply the air
suspension system and body services
such as the doors.
The hydraulic system is powered by an
engine driven tandem pump which
supplies the steering box and cooling
fan.
The front and drive axle suspension are
multilink with anti-roll bars and
supported by air springs and hydraulic
dampers.
The 24 volt electrical system is
powered by an engine driven alternator
and two batteries. The system supplies
the lighting, warning and indicating
systems.
An electronically - controlled air system
is installed which allows a kneeling
system to operate. The kneeling
system allows the front suspension air
springs to be deflated, to lower the
passenger entrance of the vehicle
almost to kerb level then re-inflate the
suspension springs to raise it again
before moving off.