Small Engine Schematics

How can i look for a 1991 Cadillac Fleetwood Brougham engine compartment diagram?

Friend includes a 1991 Cadillac Fleetwood Brougham which has began making funny noises. They seem like originating from what seems to become an Air conditioning unit that’s mounted on top and slightly back of center from the driver’s side wheel well within the engine compartment. The system appears like a cylinder approximately 4-5″ across with another shorter and slightly more compact cylinder aside from it.

My prediction may be the Air conditioning, but I am unsure and wish to take a look at a diagram/schematic before responding to him. The seem may be the seem of the bearing heading out, so there is something inside that’s turning. It’s not constant, but reacts in line with other bad bearings that I have stumble upon during my existence.

Any assistance is greatly appreciated!

Seems like the environment-ride suspension compressor..seek advice from a dealer parts dept to have an illustration or perhaps a shop manual like Chilton or Haynes from the parts store.

Small Engine Repair: Oil Change, Check RPM, Voltage, Frequency on Briggs & Stratton Generator