Porto-Power Operation and Use
Session Reference: 1
Topic: Porto-Power Operation and Use
Time Required: Four Hours
• Complete Porto-power Set
• Assorted Cribbing
• 1-2 Acquired Vehicles
• Rescue Technician, Maryland Fire And Rescue Institute, University Of Maryland, Mosby
• Rescue Intermediate, Maryland Fire And Rescue Institute, University Of Maryland
• Vehicular Rescue Manual, Fire Service Extension, West Virginia University
The student will demonstrate a basic understanding of the operation and use of the portopower by applying the material learned in a practical setting.
Porto-power Operation and Use
• Introduction to hydraulically powered tools
• Components of a porto-power
• Operation of the porto-power
• Practical applications
Session 1 Porto-Power Operation And Use
SPO The student will demonstrate a basic understanding of the operation and use of the portopower by applying the material learned in a practical setting.
EO 1-1 Demonstrate a basic understanding of the principles and operations of hydraulically powered rescue tools as well as the care and maintenance requirements.
EO 1-2 Identify the various components of a porto-power system.
EO 1-3 Explain the operation of the various components of a porto-power system.
EO 1-4 Demonstrate the operation of the various components of a porto-power system through the performance of difference vehicular access and disentanglement techniques.
I. Introduction to Hydraulically Powered Rescue Tools (1-1)
A. Majority of hydraulic tools designed for applications other than rescue and adapted by fire and rescue service for pulling, pushing, spreading, and clamping
B. Basic physical principle of hydraulics
1. Pressure exerted on a liquid is transmitted equally in all directions
2. Pressure applied to a liquid confined in a container is transmitted undiminished to all parts of the
liquid and acts in all directions
3. A hydraulic system with a small piston and cylinder transmits a force through hydraulic hose to a
larger cylinder and piston thus increasing the force
C. Hydraulically Powered Tools
1. Hand jacks - 1 ton to 120 tons
2. Remote controlled hydraulic jacks (Porto-power), 4 ton, 10 ton and 20 ton capacity used in
3. Hurst and Amkus style tools-initially designed for the rescue service.
The remainder of this lesson guide will be limited to the porto-power.
D. Safe Utilization of Hydraulic Power Tools
1. Be familiar with equipment.
2. Know limitations of tools and be aware of any power differences between pump and ram, wedgie,
3. Inspect tool periodically and maintained.
4. Use safety person when operating tools.
5. Use caution when forcing an object with power tool.
6. Keep personal objects (fingers, hair, clothing, jewelry, ties, etc.) away from operating equipment.
7. Hold tools only at designated areas.
8. Maximum effectiveness is obtained when a tool has maximum contact with the surface being acted
9. Utilize appropriate safety equipment while operating power tools.
II. COMPONENTS OF A PORTO-POWER (1-2)
1. Clamp Toe – similar to collar toe but attaches to extension rather than cylinder; used with cylinder
clamp head to create clamp.
2. Collar Clamp Head – threaded attachment for cylinder to allow extension to be connected; when
used with clamp toe secured to extension creates clamp.
3. Collar Toe – threaded attachment for cylinder to permit spreading in tight areas.
4. Double Chain Plate – threaded attachment for cylinder (may also be attached to plunger) for use
when ram is being used to pull with chains attached to both ends.