Originally Posted by deandec
Ours is a hydraulic pump which drives the power steering and the fan.
Have a large hydraulic oil reservoir with filters that needs maintenance occasionally.
I had thought this was the normal CC setup until the @2005 Cat models were introduced.
this is the case on mine. not only the main hydraulic reservoir with 3 filters stacked inside located in the engine compartment, there is a smaller rectangular shaped reservoir in the first compartment at driver side, actually right below the driver chair. when its level is low, the front wheels/steering sways.