PRONAR 663/4 SILO, Operator'S Manual, Page: 112 / 135

Pronar T663/4 T663/4 SILO SECTION 5
5.20
Change copper seal.
Screw in valve, fill air tank, and check tank tightness.
DANGER
Release air from tank before dismantling drain valve.
Cleaning valve:
•
every 12 months (before winter period).
5.3.6 CLEANING AND MAINTAINING PNEUMATIC CONDUIT CONNECTIONS
AND PNEUMATIC SOCKETS
DANGER
Unreliable and dirty trailer connections may cause unreliability and faulty functioning of
brake system.
Damaged connection body or connection sockets to second trailer should be replaced. In
event of damage to cover or seal, change these elements for new reliable elements. Contact
of pneumatic connector seals with oils, grease, petrol etc. may cause damage and accelerate
ageing process.
Inspecting trailer connections:
•
connection should be inspected every time before connecting trailer to
tractor or second trailer.
If the trailer is unhitched from the tractor, connections should be protected by cover or placed
in their designated socket. Before the winter period it is recommended to preserve the seal
with special preparations (e.g. silicon grease for rubber elements).