Front of a diesel engine showing serpentine belt, idler pulleys,…

Close-up of the front of a diesel engine with the fan shroud removed, showing the serpentine belt routed over the crank damper, water pump, idler pulleys and two spring-loaded tensioners. A large smooth aluminum pulley sits at upper left with the blue coolant hose, vacuum lines and wiring visible above.

AI caption December 2010 · Photo 279 of 328