b. Used for connecting the intervehicular hoses from the towing vehicle to the
c . After connection of hoses, the service brakes on the semitrailer can be
controlled by the brake controls on the towing vehicle.
Located on front crossmember of the chassis frame.
to be fitted to the SERVICE and EMERGENCY
air hose couplings.
b . C o n n e c t when brake air hose
c o u p l i n g s are not connected to the
c . U s e d to prevent dirt and moisture
from entering the braking system.
d . C h a i n e d to brackets welded to the
front crossmember of the chassis frame.
B r a k e air hose couplings
AIR RESERVOIR DRAIN COCK
W e a r protective goggles when
opening air reservoir drain
contact with the air stream.
a. Used to relieve air pressure in
the semitrailer braking system.
collected in air reservoir.
A i r reservoir drain cock