Zil Other models

The KB-503 is powered by a diesel engine of the YaMZ-236 type, a unit built in Yaroslavl and widely used across the Russian commercial vehicle industry, rated here at 161 kW. The machine's gross weight is 152,000 kg. Overall length is 5,920 mm, width 2,500 mm, height 2,700 mm, and wheelbase 3,200 mm.

A gross weight of 152 tonnes places the KB-503 in the heavy class of crane technology, the kind needed for lifting work on large structures, in industrial plant construction or in heavy industry. The YaMZ-236 diesel engine as the power source points to its origin in the Soviet-Russian commercial vehicle industry, from which special vehicles such as crane carriers were also developed.

When buying a used crane of this weight, the condition of the load-bearing frame matters for cracking, since the high gross weight means sustained loading on the frame and axles. The YaMZ-236 engine should be checked for oil loss at the cylinder head gaskets and smoke behaviour under load, and the crane superstructure's supporting structure for wear at the bearing points where the load is transferred into the frame.