BUNNING Lowlander MK4, Инструкция по эксплуатации

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LOWLANDER MK4 MANURE SPREADER – INSTRUCTION & SPARES MANUAL
Page
74
6.3 AIR (PNEUMATIC) BRAKE SYSTEMS
6.3.1 INTRODUCTION & SAFETY
Since 1986 trailers used for the sole purpose of Agriculture, Horticulture or Forestry, and travelling below
20mph have been allowed to have a braking performance of just 25%. This means that a tandem axled
agricultural trailer with 16 tonnes of weight imposed on the road, by its tyres, would need to generate a
minimum braking force of 1000 kg per wheel.
However, the same trailer travelling above 20mph, or not being used for Agriculture,
Horticulture or Forestry would be required to have twice the braking capacity, and generate a
minimum of 2000 kg braking per wheel.
Trailers travelling at above 20mph are required to have a two-line air braking system, and
meet the prevailing standards for HGV trailers. The tractors will also need to meet the higher
braking performances, and other design criteria.
NOTE: Agricultural tractor and trailer combinations are prohibited from travelling at speeds above
20mph (32 km/h) in the UK.
IMPORTANT!
Before working on braking systems and components always observe the following precautions:
a. Stop the engine before working under a vehicle.
b. Always chock the trailer wheels, because depleting the system pressure may cause the vehicle to roll.
c. Keep hands away from actuators and brake levers as they may move as the system pressure changes.
d. Never connect or disconnect an air line containing pressure, it may whip as the air is released.
e. Never remove a component or plug unless you are certain all system pressure has been released.
f. Never exceed maximum working pressures.
g. Never attempt to dismantle a component until you have fully read and understood the recommended
procedures.
h. Use only the correct tools and observe all safety precautions pertaining to use of these tools.
IF ALL INSTRUCTIONS ARE FOLLOWED CORRECTLY THE TWO-LINE AIR BRAKING SYSTEM WILL PROVIDE
YEARS OF TROUBLE-FREE SERVICE.
WARNING!
Thoroughly read and understand this manual before attempting any remedial work, or adjustments to
this braking system.
6.3.2 MAINTENANCE
Generally speaking, the trailer two-line air braking system requires little specific maintenance. However,
the whole system should be drained regularly to remove any water from the tanks.
Regular inspections should be undertaken, where all the pipes are visually inspected to ensure that none
have become kinked or worn, and all mechanical linkages should be checked, and lubricated as necessary.
The air filters can be checked for contaminants (after disconnecting both of the air susies), and these can be
cleaned/replaced as necessary.
In order to maintain a safe level of braking, the foundation brakes need to be serviced to the same levels as
HGV trailers. Any reduction in the performance of the trailer’s foundation brakes can adversely affect the
life of the tractor’s brakes, and possibly invalidate any warranty claims.
A brake troubleshooting page is included (see Section 6.3.9 TROUBLESHOOTING – PNEUMATICS), as well as
extra technical detail concerning the RELSV. Help should be sought if any doubt exists about safety critical
items.