Title: Identify safety procedures when working on hydraulic and pneumatic systems.
Course: Agricultural Power Systems (18402-I) > Section: Applying Knowledge of Hydraulics and Pneumatics

Identifying safety procedures should include explaining

- all safety precautions, procedures, guidelines, and manufacturer specifications for working on hydraulic systems
- all required PPE for the selected task
- the safe use of appropriate tools and equipment
- procedures in a systematic plan using the repair or manufacturer manual
- the importance of relieving hydraulic pressure in an operating system
- the importance of locking cylinder stops, locks, or blocks for raised equipment or components when servicing or performing maintenance on hydraulic systems
- hazards related to hydraulic systems, such as
  - burns from the hot, high-pressure spray of fluid when changing lines, connections, fittings, or filters
  - bruises, cuts, or abrasions from flailing hydraulic lines
  - hydraulic injection of fluid into the skin (e.g., pinhole leak injuries, improper coupling)

- the importance of inspecting for leaks, given hydraulic systems store fluid under high pressure
- why safe and efficient hydraulic system performance requires general maintenance
- how proper coupling of high- and low-pressure hydraulic components and pressure relief valves is related to safety
- the importance of using a chain hoist, floor jack, or other type of assistive device when the removal of heavy hydraulic pumps or control valves is required.

Teacher Resource: Hydraulics Systems Safety, National Ag Safety Database (https://nasdonline.org/1100/d000891/hydraulic-systems-safety.html)

Process/Skill Questions:

- What special hazards are presented by hydraulic systems?
- What PPE is important when dealing with hydraulic systems?
- Why do injection injuries from high-pressure hydraulic fluid require immediate medical care?
- What is the proper procedure for determining the location of a leak?