Leaks
The main cause of disorder in the operation of the brake line is the abolition of freight cars with slides without disengagement of connecting hoses. The heads of branches produced before 1979 have provided an increased resistance at unclasped sleeves stretching after the disengagement autocoupling. These efforts violate the density of threaded connections terminal cranes, and in some cases led to the rupture of hoses or even disrupt the terminal valve.
Especially great efforts have unclasped head with deformed, boarded ridges, bad impact on the turnouts. To address these shortcomings in modern heads geometric dimensions provide a decoupling of the longitudinal strength of 50-70 kg; terminal cranes coaches rotated about the vertical by 60 °, which excludes the impacts heads disunited sleeves of turnouts; slides fitted with a device to mechanize the separation of the sleeves.
Exceeding regulatory impact velocities of cars in freight yards upsets mount brake equipment is the cause of leakage.