A universal tractor maintenance checklist to keep your. Lack of maintenance of hydraulic systems is the leading cause of component andsystem failure yet most maintenance personnel dont understand proper maintenancetechniques of a hydraulic system. A hydraulic circuit, whether it is simple or complex uses the basic hydraulic principles discussed on the following pages. Always depressurize the relevant part of the system before any maintenance operation on the hydraulic power unit. In general, the range of practical flow velocities of each piping is as follows. Provides a flow path for the pump volume back to tank. Hydraulic systems have many advantages as power sources for operating various aircraft units. For these situations we can offer our repair service in one of our wellequipped workshops around the world. The seminar delivers an interactive training experience designed to help participants understand the various components found in a typical hydraulic system and how these components function and interact with. The decision may work for the short run, but may not be a good longterm decision.
Why preventive maintenance is essential for hydraulic systems. This course is designed specifically for millwrights, electricians, reliability technicians, supervisors and engineers who are responsible for maintaining and controlling pneumatic systems. In hydraulic and lubrication oil systems, friction, wear, leakage and excess temperatures can contribute to the operating fluid becoming contaminated, with solid. Gearbox maintenance tips preventative maintenance tips in order to prevent the need for any costly repairs or downtime, the first and most important part of any maintenance plan is fixing problems before they happen. This chapter first describes the development and application of aircraft hydraulic systems with emphasis on the basic structure of hydraulic systems, a typical hydraulic system in the boeing.
Diagnostic and repair procedures are included along with schematic diagrams of the electric, pneumatic and hydraulic circuits. The intent of periodic maintenance is to keep the system operating at an acceptable level of service to the public. Best practices for hydraulic system maintenance preventive. Basic hydraulic systems and components subcourse number al 0926 edition a us army aviation logistics school fort eustis, virginia 236045439 4 credit hours edition date. We will talk about the right way to perform maintenance on a hydraulic system utilizingthe maintenance best practices. When additional information is desired to satisfy a problem not covered sufficiently for the users purpose, please contact your cooper power systems sales engineer. Even with proper maintenance a component breakdown or system failure can never be ruled out. The goal of preventative maintenance is to help you identify component weaknesses before failure and loss of production. There are two aspects to the basic foundation for proper maintenance of a hydraulic system. Maintenance of hydraulic gates important parameters. Page 33 general maintenance 23 component system task daily weekly monthly yearly page hydraulic system check oil level in tank, see page 7 and refill if necessary check if the shutoff see figure valve on the hydraulic 535 tank is open check ground for overnight leaks. Oil that is too hot will degrade rapidly, drop in viscosity and can lead to accelerated component wear and poor system performance.
Maintenance manuals ottawa terminal tractors kalmar ottawa. Pointers on work carried out during initial start up and maintenance for reasons of safety, line connections screw fittings and units must not be loosened or disconnected while the system is under pressure. Lets take a look at some preventive maintenance and safety procedures. Improving the reliability of hydraulic systems gpm. Metaltometal contact is eliminated, providing superior wearability, increased load carrying capability, and prolonged cylinder life. Hydraulic system troubleshooting advanced fluid systems. May, 2014 best preventive practices for hydraulic system maintenance tuesday, may, 2014 by hydraulics team one of the most vital systems that you need to consider in extending the life of a machine is your hydraulic system. Lack of maintenance of hydraulic systems is the leading cause of component and system failure yet most maintenance personnel dont understand proper maintenance techniques of a hydraulic system. Reduce failure of hydraulic systems with preventive. The powerful impact of preventive maintenance hydraulics. Hydraulic installations can be of the most varied design and construction and, as. Checking the hydraulic fluid temperature during operati on. These are used in these are used in automatic transmissions and mate rial handling systems in industries.
Principles, operation and maintenance training seminar provides participants with a greater working expertise and understanding of hydraulic power systems. Before such steps are taken, the load is to be lowered, the pumps switched off, and the pressure accumulator relieved. If the focus was shifted to the prevention of system or component failures, less time and money could be spent on troubleshooting. If your system does not have a preventative maintenance schedule, here are some basic guidelines. Carefully selected wiper and seal combinations are mated with a hard chrome plated piston rod to deliver exceptional allaround performance and durability. We will also learn about various hydraulic components and their function. Customer demand for more powerful and easiertooperate equipment has elevated the importance of proper hydraulic system management. January 1970 replaces 28sb1 dated 665 reclosers service information. Both the system and the hydraulic oil is crucial in maximizing uptime and reducing repair costs. The leveling system has a reservoir, a pump, selector valves and actuators. The majority of the parts of a hydraulic system operate in a bath of oil. Hydraulic system care and maintenance multitech wa. The lifeblood of your hydraulic system the hydraulic fluid requires four key areas of care to gain optimum service life. In case of conflict, manufacturers recommendations on use, care, operations, adjustment and repair.
Basic principles of hydraulics brighthub engineering. Gearbox oil can be a key indicator of gearbox health and can prolong gearbox life span, so try these quick tips below. Listed below are some of the maintenance strategy types that you may adapt for your business, with their pros and cons and the situations they will be most effective in. Manual valves should also be included as a backup, together with an. Mo206 maintenance and operation of air compressor plants. Maintaining hydraulic systems chapter 11 flashcards. Hydraulic gse maintenance and troubleshooting aviation. When it comes to hydraulic system maintenance, it is vital that the. Hydraulic fluid acts as the lubricant between moving parts and often the. There is a table of specifications and a schedule for preventive. Developing and creating a maintenance strategy plan will depend largely on the assets of the company and the operation of the equipment.
A sdvosb service disabled veteran owned small business. Maintenance mechanics and electricians chuckle when i tell them that the reservoir should be cleaned at least once a year. The basic foundation to perform proper maintenance on a hydraulic system has two areas of concern. Following the six simple steps and routines for a healthy. Thats why it pays to perform regular maintenance and preventative inspections to eliminate problems before they occur. Preventive maintenance is especially important with hydraulic products. A frequent guideline for pipe size determination is flow velocity. Wabco maintenance manual mm0401 revised 0818 about this manual this manual contains maintenance procedures for wabcos hydraulic power brake hpb system for trucks, tractors and buses. Maintenance of hydraulic gates important parameters by mr. It teaches the fundamentals of fluid power and provides details on the design and operation of hydraulic and pneumatic components, circuits, and systems. Preventive maintenance for hydraulic systems mac hydraulics. If you keep contaminants out of your hydraulic systems, you can avoid all common problems and failures. Unlike pneumatic circuits, most hydraulic systems have a power unit that only operates one machine. The high pressures and temperatures associated with hydraulics make hose and fitting maintenance as well as selection critical.
Jul 07, 2017 if youre looking to improve your hydraulic system maintenance program, you must begin by organizing your documentation. This article is a supplement to the oem maintenance manual provided. Through regular maintenance you will become familiar with the components and be able to diagnose potential problems. Maintenance, repair, modifaction or overhaul of your. The basic foundation to perform proper maintenance on ahydraulic system has two areas of concern. Since nonpayload weight is an important factor on aircraft, the hydraulic system is ideal for aviation use. Notice that the hydraulic power unit is dedicated to this machine. For maximum benefit, this manual should be used in conjunction with equipment manufacturers manuals, parts lists and drawings. Gradually increase the system pressure by turning the analyzers load. This contributes to less oil contamination, reduced back pressure, and greater oil flow efficiency. When properly maintained and operated, hydraulic gse equipment should provide many years of trouble free service.
Refer to the trouble shooting tab in this manual for a number of practical pointers which are always applicable. Atm 1112 basic hydraulics and pneumatics 10 module 1. If done correctly, the risk of injury andor excessive, costly downtime decreases. We know that successful maintenance programs will provide success but we must have a system of checks and balances to. As mentioned before, some new installations are using a central hydraulic. Hydraulic preventive maintenance schedule gpm hydraulic. Troubleshooting and preventive maintenance of hydraulic systems. Over heating of system what is the maximum temperature for a hydraulic system. We can repair your system or component in our workshops and get your system up and running on short notice. Most hydraulic systems consist of a pump, hoses and lines, cylinders and motors, valves, a cooling unit, a reservoir, filters and hydraulic fluid oil. Maintenance manual chapter 9 electrical system maintenance. International thread identification manual 4350998. Hydraulic system care and maintenance basics hydraulic machines work by forcing fluids through a series of pipes and hoses to force a machine component to move. Maintenance usually consists of changing or cleaning filters and strainers, and occasionally adding or changing the fluid in the system.
Higher system pressures and faster cycle times place greater stress and wear on those components, which can generate high levels of harmful contaminants that lead to system that a strict hydraulic system maintenance schedule be followed. Mar 07, 2016 a quick overview of hydraulic system maintenance posted on march 7, 2016 one of the most overlooked but most important components of heavy construction equipment is the hydraulic system. This will ensure your hydraulic system operates safely and trouble free. Ask the manufacturer for recommendations on frequency of maintenance, but also train personnel to watch for telltale signs that maintenance is needed. At gates, we believe following proper preventive maintenance procedures is time well spent. The person maintaining air systems in todays modern plant must know the following. Regular maintenance is the key for a wellmaintained hydraulic system. Also, to ensure proper function, periodic maintenance is important and can add up to maximized uptime and reduced repair costs. A hydraulic system is usually consisted of a pump, hose and lines, cylinders, valves, a cooling unit, reservoir, filter and hydraulic fluid. Hydraulic systems power the moving parts of many kinds of industrial equipment. The experts at cd industrial group cdig explained in a recent webinar that they feel there is a documentation crisis at play in so many of the sites they visit around north america. Figure 52 provides a pictorial representation and a schematic drawing of a typical hydraulic circuit.
World wide service for hydraulic systems and components. Practice good hydraulic system maintenance fluid power world. In an effort to keep costs down over time, it is critical that a strict hydraulic system maintenance schedule be followed. The sophistication of hydraulic systems and components has increased over time. To start, it is a good idea to have a reg ularly scheduled maintenance program based on service hours of hydraulic system use, or regular time intervals. Advantages of hydraulic systems include power, accuracy, efficiency and ease of maintenance. Welding and grinding hydraulic system always clean the machine and attachment, disconnect the battery, and disconnect the wiring from the bobcat check hydraulic tubes, hoses and fittings for damage controllers. Lack of maintenance of hydraulic systems is the leading cause of component and sys tem failure, yet most maintenance personnel dont understand the proper maintenance techniques of a hydraulic system. Third line hydraulic return when working with oneway hydraulic attachments, such as a breaker or brush cutter, the standard thirdline hydraulic return system allows oil to flow directly back to the tank without running through the control valves. In planning of a oil hydraulic system, the first thing to do is selection of devices and tanks that meet the system capacity, and whats coming next is selection of connecting piping. Compromises in hose selection may put you in danger, as well as affect the performance and life of your system. No matter the size or complexity, proper maintenance of. Now, we come to the types of hydraulic fluids it is very important that a correct fluid type, which is as specified in the manufacturers maintenance manual or on an. Set up a filter maintenance schedule and follow it diligently.
Preventive maintenance of a hydraulic system is crucial for. Hydraulic pumpmotor division hydraulic flow is developed as the pump rotating group is driven by a prime mover hydraulic pump basics fluid is forced out of pump at the pump outlet a partial vacuum is created at the pump inlet and atmospheric pressure forces fluid into pump from the reservoir. Wed all like to avoid losing the use of our tractor, and we can do so by following a basic tractor maintenance. For many of us, weve come to rely on our tractor, and being without it is a great inconvenience. Know about the uses of hydraulic machinery in various fields and the relation between pressure and force. The lift system of tractor is operated by the hydraulic pumps. A special folder for the hydraulic fluid and its service record. Troubleshooting and preventive maintenance of hydraulic. Pdf hydraulics and pneumatics download ebook for free. Jan 25, 20 lack of maintenance of hydraulic systems is the leading cause of component andsystem failure yet most maintenance personnel dont understand proper maintenancetechniques of a hydraulic system. Unit descriptor this unit covers undertaking preventive maintenance. Aug 29, 2015 measuring success in any program we must track success in order to have support from management and maintenance personnel. For instance, overheated oil caused by a leaky cylinder seal can break down and cause damage to other cylinders or the pump. To test the valve, shift the valve to allow flow to pass through the analyzer.
Regular standards and procedures should be documented and adhered to for the proper maintenance of any equipment with a hydraulic system. Introduction to pneumatics 5 air generation and distribution the main function of the air generation and distribution is to provide the system with compressed air which is dry, clean, and at the required pressure the compressed air supply for a pneumatic system should be adequately. We can repair your system or component in our workshops and get your system up and running on a short notice. We will look at fundamental principles and how they pertain to hydraulic systems. The components of hydraulic systems work together intimately. This publication provides information on the maintenance and operation of air compressor plants. Lack of maintenance of hydraulic systems is the leading cause of component and system failure yet most maintenance personnel dont understand proper. For safety, efficiency, and oil quality, temperatures above 140 degrees f are not recommended for industrial hydraulic equipment. The following are preventive maintenance and reliability tests that will improve the performance of the systems and machines. Advanced fluid systems features hydraulic system tools and resources for troubleshooting. Preventive maintenance is the most important function for maintaining the service life of the equipment and reducing costs associated with equipment or component replacement, or unwanted shutdown. Theyll put you on the right track to safe and longlasting hydraulic assemblies. This study guide will discuss basic hydraulic systems. Madanaiah, consultant, centre for good governance for regulating water discharges through the dams, canals, tunnels, penstocks or other outlets for the purposes of irrigation, domestic use, flood control, navigation, power etc, hydraulic gates form the most vital component.
For these situations, we can offer our repair service in one of our wellequipped workshops around the world. A 10 point check a lubrication technician or operator responsible for hydraulic system maintenance should, at minimum, perform the following 10 point checklist as part of a routine weekly quick scan of a hydraulic system. A fluid power technicians guide skinner, steve, cuthbert, martin on. September 1994 subcourse overview this subcourse is designed to provide instruction on the concept and operation of the basic components of the hydraulic system. A circuit diagram and bill if materials for each component in the system. Using a tractor maintenance checklist is a great way to keep your small farm tractor operating smoothly.
Maintenance of hydraulic systems linkedin slideshare. Operate the systems pump at its rated rpm note the flow rate indicated on the analyzer. When the plant or system is down, this is an excellent time to check the reservoir. Initial start up and maintenance advanced fluid systems. You will find here descriptions of the features, location and operation of the components. Preventive maintenance for hydraulic systems is critical for hydraulic equipment, whether it is an industrial system running in an enclosed plant or an integral part of a powerful hydraulic excavator. Make sure all of the items recommended are done in the time they should be completed, even if they do not appear to need to be completed. One of the major factors behind the failure of hydraulic systems is contamination. Aug 29, 2015 maintenance of hydraulic systems most companies spend a great deal of money training their maintenance personnel so that they can troubleshoot and correct failures of a hydraulic system. Chapter 9 electrical system maintenance general all electrical systems require periodic maintenance in addition to nonscheduled maintenance caused by unpredictable events such as storms, accidents, and equipment failure. Each subsystem has a power generating device pump reservoir, accumulator, heat exchanger, filtering system, etc.
A description of the system and its relationship to the operation of the machine. Preventive maintenance for hydraulic systems by the best. We must also understand that any action will have a reaction, which will possibly be negative. The condition of a machines hydraulic system can make a big difference. Hydraulic systems can be small, simple and straightforward and can also be very large, highpressure systems with a complex array of servo valves and pumps, and everything in between. Read and understand all instructions and procedures before you begin to service components. Were confident that well be able to help if things go wrong, but wed rather help you get things right in the first place. Hydraulics and pneumatics is a teaching package aimed at students pursuing a technicianlevel career path. Pdf handbook of hydraulic fluid technology ricardo. This should include a description of the machines normal cycle and the hydraulic actions that the system performs. Schedule regular services and repairs by qualified hydraulic engineers. We all have seen automobiles power steering system. Routine maintenance on your hydraulic system can alleviate performance problems and downtime, prolong hydraulic component life and reduce operating costs. Installation and service manual hydraulic cab tilt system.
May 15, 2014 reduce failure of hydraulic systems with preventive maintenance thursday, may 15, 2014 by hydraulics team the first line of defense in reducing failure of a hydraulic system is to incorporate contamination measurement and control protocols as an integral element of your preventive maintenance pm program. Ensure that all employees that work with the hydraulic equipment are trained in the use and maintenance of the equipment to the level at which they are required to work and are also fully aware of the maintenance plan for the system. Learn about the basic hydraulic systems and hydraulic principles that are used for all hydraulic machinery, including pascals law. As a result, damage to one component may cause further damage to others. Hydraulic system performance is determined by the weakest component, which can. Hydraulic preventive maintenance and safety are important for anyone who operates. Maintenance of a hydraulic system that is properly operated and cared for is a routine task.
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