101
4.10 Brake system
Maintenance
air pressure, thus releasing parking
brake. For parking / emergency
braking, hand brake valve is operated
for depleting air to atmosphere, thus
applying parking brakes.
Second auxiliary outlet of system
protection valve is connected to
exhaust brake air cylinder through
exhaust brake solenoid valve which
is coupled with service brake pedal
operation through stop light switch.
Exhaust brake isolator switch is
provided on instrument panel which
can be used to cut off exhaust brake,
isolating exhaust brake whenever
required e.g. while starting the
vehicle on steep up gradient.
An air dryer cum unloader valve is
fitted between air compressor and
system protection valve alongwith
purge tank. Air dryer ensures clean
and dry air in the brake system,
resulting in enhanced life of brake
valves.
Note :
Do not attempt to clean air dryer
desiccant cartridge and filter.
Replace desiccant cartridge and filter
after every 2 years.
To conduct brake system routine
service check - I prescribed at every
18,000 km and routine checks - II
prescribes at every 36,000 km
contact nearest Tata authorised
workshop.
Procedure for these checks
explained in pages 110-112.
S Cam full air brakes
S cam brakes are fully air operated
brakes. Brake actuators at front and
rear axles are externally mounted
outside the foundation brake
assemblies.
Air is fed to brake actuators through
dual brake valve (Operated by brake
pedal), proportional to braking
requirements.
Push-rods of brake actuators act on
slack adjusters, which convert linear
motion into circular motion of cam
shaft. S-shaped cam portion of shaft
expands brake shoes against drums,
thus applying brakes.
S cam is of equal displacement
design, resulting in equal wear of
leading and trailing shoes.
Brake system provides safe and
reliable braking. Brake circuit
consisting of various pneumatic
components is shown in schematic
layout.
Service brakes consist of two
separate circuits. One for front
wheels and the other for rear wheels.
In the unlikely event of failure of any
one circuit, other circuit remains still
operative and guarantees a certain
degree of braking for the vehicle.
One of the auxiliary outlet of system
protection valve is connected
through a graduated hand brake
valve to spring brake chamber
portion, integral with rear brake
actuator.
During normal running, inside springs
are kept in compressed condition by
Содержание LP 613 EURO-II
Страница 41: ...39 2 1 Vehicle identification KnowYourVehicle LP 613 CHASSIS WITH COWL 38 WB EURO II LHD ...
Страница 42: ...40 2 1 Vehicle identification KnowYourVehicle LPT 613 CHASSIS WITH CAB AND LOAD BODY 38 WB EURO II LHD ...
Страница 99: ...102 4 10 Brake system Maintenance AIR BRAKE SYSTEM WITH ABS IF FITTED ...
Страница 100: ...103 4 10 Brake system Maintenance SCHEMATIC LAYOUT OF DUAL CIRCUIT FULL AIR S CAM BRAKES WITH LCRV ...
Страница 141: ...147 6 Fuel Lubricants and Coolant 6 1 Fuel 149 6 2 Lubricants 150 6 3 Coolant 152 ...
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