CAT 432 - Caterpillar LS/PC Hydraulics

1. Demonstrate knowledge of pressure compensated pumps on a written test.
   1. Identify parts on a pressure compensated axial pump
   2. Identify parts on a pressure compensated radial pump
   3. Adjust pressure on a pressure compensated pump
   4. Describe operation of a pressure compensated pump
2. Demonstrate knowledge of pressure compensated control valves on a written test
   1. Demonstrate the understanding of basic system schematics by color coding circuits.
   2. Describe the operation of a pressure compensated flow control valve.
   3. Explain the advantages of using pressure compensated flow control valves.
   4. Explain the purpose of a pressure reducing valve
   5. Demonstrate in the laboratory how a pressure reducing valve functions
3. Demonstrate knowledge of priority valves, and make-up valves on a written test.
   1. Explain a simple flow control valve
   2. Disassemble and identify parts on a simple flow control valve
   3. Explain a complex flow control valve
   4. Disassemble and identify parts on a complex flow control valve
   5. Explain the operation of a make-up valve
   6. Disassemble and identify the parts in a make-up valve
4. Demonstrate knowledge of the signal network used in pressure compensated systems on a written test
   1. Explain the purpose a double check valve ( RESOLVER) serves in the system
   2. Describe the purpose of primary and secondary resolvers
   3. Identify the locations of the valves on a Cat 416 backhoe
   4. Disassemble an individual valve in the lab and identify the parts and check for wear
   5. Explain oil flow through the valve
   6. Explain the purpose of an advanced signal passage found in the main control valve
   7. Describe how a signal pressure limiter functions
   8. Identify test port locations on the 416
   9. Perform trouble shooting tests as per manufactures guidelines