The Renfe Class 353, formerly known as the T-3000 are a class of diesel-hydraulic locomotives built by Krauss-Maffei for express trains in Spain.
Background and design
The class could be described as the bigger and better version of the Renfe Class 352, being similar in design, and from the same builder, but with more power and also two cabins to simplify operation.
They were delivered between 1968 and 1969, built to a similar two-engined hydraulic transmission design as the Class 352 but with Maybach 12-cylinder engine developing more power, 1500 hp (at 1600 rpm) each, giving a tractive effort of 268 kN. Built with two interior walkways via the cabins, the locomotives were a little heavier than their predecessors at 88 t.
The locomotives were fitted with coupling screws and Scharfenberg couplers. Auxiliary generators provide electrical power for the coaches.
Two sets of standard gauge bogies were also supplied, for cross border work (bogie exchange).
The locomotives were painted in red-silver.
Operations
A total of five diesel were acquired to pull the