Maintenance Hydraulic Troubleshooting Video

This streaming Shockwave presentation describes in detail the services that GPM can provide including Maintenance Basic Hydraulic Troubleshooting, hands-on troubleshooting training, preventive maintenance scheduling, machine consulting and troubleshooting and hydraulic safety training and inspection.

 

Maintenance Basic Hydraulic Troubleshooting

 

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It is recommended that all students attend the Maintenance Basic Hydraulic Troubleshooting class prior to attending the Troubleshooting In-Plant Hydraulics course.

Professional Classroom Instruction This three day course is designed for electricians, millwrights, supervisors, and anyone who is responsible for the hydraulic maintenance of your mill machinery. Maintenance personnel look at hydraulics different than engineers, sales people, or manufacturers. This workshop is designed to include what the maintenance person needs to know:
  • The function of each hydraulic component.
  • How to troubleshoot the component.
  • How to read the hydraulic symbols that are found on the hydraulic schematic.
  • How to properly set system pressures.
The best time spent troubleshooting the machine is initially reading the print and making a good decision as to the cause of the problem.

This course is designed with the above concepts in mind. As the specific components are taught, the instructor refers the students to where they are located on the in plant systems.

Program

Hydraulic Fundamentals must be understood to troubleshoot hydraulics. The biggest problems in mills today is that the pressure is turned up to increase speed. If the system is not properly set, the result can be excessive shock, leaks, and heat in the system.

Hydraulic Pumps are usually the first components changed when a hydraulic program occurs. The pump should never be changed before making the quick tests taught in this section. A step by step procedure is explained for setting the pump compensator and the system relief valve.

Accumulators are the most dangerous hydraulic devices in the system. The proper method of bleeding the nitrogen and hydraulic pressure out of the accumulator before removing from the system is specifically covered. Accumulators used for both volume and shock applications are discussed.

Pressure Controls all look very similar but perform different functions in the system. This portion of the course covers the function, setting, and troubleshooting of all normally open and closed pressure controls.

Directional Valves port the oil flow to cylinders and hydraulic motors as well as unload pumps and drain accumulators. The student learns the six main causes of solenoid failure. The symbols and use of two, three and four way valves are described.

Fluid Maintenance is many times neglected or only received attention when problems in the system occur. Oil sampling and filter maintenance practices are established. Reservoir maintenance standards for breathers, heaters, high temperature switches, level switches, etc. are specified.

Hydrostatic Drives are commonly used on Knucklebooms, log cranes, and slasher conveyors. These drives are controlled both manually with servo or proportional valves. The electrical amplifier and hydraulic adjustments for these drives are included in this session.

Servo Valves and Linear Positioners. These valves are expensive and are in many cases changed without making any tests. The student learns the proper procedure for installing, adjusting, and troubleshooting these valves.

The Maintenance Basic Hydraulic Troubleshooting course is a prerequisite to GPM's Customized Troubleshooting In-Plant Hydraulics

 

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GPM Hydraulic Consulting, Inc.

Box 1376  Monroe, GA 30655

(770) 267-3787

gpm@gpmhydraulic.com