Smooth pulleys used to "guide" the belt and create the necessary wrap around the drive pulleys. Cat C15 Fan Belt Routing Diagram (Visual Description)
The water pump on a C15 is typically gear-driven from the front housing, not driven by the serpentine belt. This is a key difference from smaller engines. cat c15 fan belt diagram
While the routing described above covers 90% of C15 ACERTs, Caterpillar made variations. Before you remove the old belt, take a picture of the routing with your phone, or sketch it on a piece of cardboard. It saves hours of frustration later. Smooth pulleys used to "guide" the belt and
Here is a simple diagram to illustrate the fan belt routing: While the routing described above covers 90% of
– If the old belt is still intact, trace its path. If broken, look for shiny grooves on the pulley ribs – those indicate belt contact.