Fault finding while the pump is running, chapter iv pages 50 to 60. Standard skids include a hydraulic pump, electric motor, and either a single or dual standard capacity or high capacity housing. Vickers systems to the extent permitted by law accept no liability for loss or damage suffered as a result of the use of this guide. Obviously this cannot be true, but when preliminary troubleshooting analysis focuses on the pump, a series of steps can pinpoint the specific problem and lead to the. Hydraulic systems may be very complex, but every system, no matter how basic, must contain a reservoir, a pump, various valves to control oil flow, direction and. Base not rigid enough tighten holddown bolts on pump and motor or adjust stilts. Troubleshooting and preventive maintenance of hydraulic. Incorrect installation or assembly of these parts could cause the pump or pumps being repaired to fail in subsequent use or to operate incorrectly. The gpm of the fixed displacement pump can not be varied.
Our 3day handson workshop is designed specifically for millwrights, mechanics and supervisors. Tighten all fittings to prevent unnecessary leakage. Amatrols basic hydraulic troubleshooting learning system 950htb1 teaches learners how to troubleshoot hydraulic systems and their components, such as hydraulic motors, directional control valves, and cylinders. This hydraulic repair and troubleshooting seminar provides the basic building blocks and knowledge needed to be proficient working with industrial hydraulics and fluid power. Dec 19, 2016 the tank, valves and cylinders were cleaned and a replacement pump installed. Pump builds pressure, but ram coupler is not tightened sufficiently, and. Whether you need a tractor pto pump, a bidirectional gear motor, or a highpressure hydraulic unit, we have it all here at northern tool. Item c, operate pump for a few seconds until fluid comes out of port, replace relief valve torque to 22nm and retry unit air being introduced in system if air is being introduced in the system, the gear pump might have some priming problems. Checking the pump flow through the relief valve at low pressure and then at high pressure can be a great indication of how worn the pump is. If you can understand these two things you can fix most hydraulic systems. Knowing the system probably the greatest aid to troubleshooting is the confidence of knowing the system. Hydraulic pumpmotor division greeneville, tn 37745 usa 10 parts list caution these service parts are intended for use in hydraulic pumps. Understanding and troubleshooting wastewater pumping.
How many gallons per minute gpm can a pump produce that has a displacement of 0. Hydraulic pump motor division greeneville, tn 37745 usa 10 parts list caution these service parts are intended for use in hydraulic pumps. Troubleshooting tips for hydraulic systems womack machine. Advanced fluid systems features hydraulic system tools and resources for. When a hydraulic issue occurs, the pump usually is one of the first components changed out, but it actually should be the last. Pvp series variable volume piston pump service bulletin. Do not use teflon tape on pipe thread fittings pump is hot. Hydraulic inline piston pump similar to an engine, the piston moves within a barrel to create pressure that will force the hydraulic fluid through the system. It should never be changed before several tests are conducted. Find a hydraulic pump that matches any industrial or agricultural machinery for quick installation and efficient performance.
The pump is arguably the heart of almost every hydraulic system and, as such, has traditionally been blamed for almost every operating problem. Troubleshooting tips for hydraulic systems download data sheet this data sheet describes a stepbystep checkout procedure for hydraulic systems which have previously been working satisfactorily but which have developed trouble, usually over a 24hour working period, which renders them inoperative. Worn pump, valve, motor, cylinder or other component. Hydraulic pump troubleshooting guide no oil flow from pump. Because a pump is the most timeconsuming part to replace and the most expensive. Troubleshooting tips for hydraulic pumps download data sheet the pump is probably the component most subject to wear in a hydraulic system, and the one most likely to cause a sudden or gradual failure in the system. Target hydraulic troubleshooting,troubleshooting hydraulic. Not all lathes will have all of the components shown. Permanently installing a flow meter in the case drain line is an excellent reliability and troubleshooting tool. Each component in the system must be compatible with and form an integral part of the system.
Troubleshooting for relief valves used in hydraulic systems prof. Pat clark of lifting gear hire demonstrates a few troubleshooting solutions for your hydraulic cylinders and pumps in the hopes of ensuring a successful and productive project. Understanding and troubleshooting wastewater pumping system. When looking at the outside of the pump there may be certain areas where you can see oil. Obviously this cannot be true, but when preliminary troubleshooting analysis focuses on the pump, a series of steps can pinpoint the specific problem and. Hytorc corporate headquarters 333 route 17 north mahwah, nj 07430, usa. Dec 17, 2011 an effective pump troubleshooting tool will always begin with the question when did this start. Hydraulic system troubleshooting advanced fluid systems. With system off and needle valve on analyzer in wide open position, install the analyzer in the line with fluid to be flowing in the direction of the arrow on the flow monitor scale. Install pressure gauge and adjust to correct valve setting pressure.
Because of this, the following points should be considered. Body must be unloaded, safety prop must be raised, and depending on the problem, tests, and repairs to be. The inclusion of adequate test points for pressure readings, although not essential for operation, will expedite troubleshooting. Formulas include those commonly used for cylinders, hydraulic pumps and motors, and vehicle sizing. Operator safety is a major consideration in the product design and operator manuals are provided to promote their safe use. How hydraulics works 31 pressure and flow are the key ingredients to a hydraulic system. Remove the relief valve c from the block, jog the unit for a second or two, until the pump builds pressure, replace the valve in the port, retorque 22nm16 ft. Sound checks cavitation is the formation and collapse of air cavities in the liquid. Can you suggest some tips to find a solution to this problem. Heat is one of the biggest issues in a hydraulic system. When troubleshooting hydraulic power units you first want to understand how the hydraulic circuit works with the electrical circuit, also the sequence of operation for each hydraulic circuit. Possible causes and remedies are listed for each type of trouble. Dec 15, 2014 pat clark of lifting gear hire demonstrates a few troubleshooting solutions for your hydraulic cylinders and pumps in the hopes of ensuring a successful and productive project. Sevil1 faculty of mechanical engineering eskisehir osmangazi university, eskisehir1, turkey.
Hydraulic power unit troubleshooting guide introduction a. Troubleshooting hydraulic system problems troubleshooting. Hydraulic pumps fixed displacement pumps the gpm of the fixed displacement pump can not be varied. Many different combinations allow the flexibility to match even the most specific system need. The following troubleshooting guides cover five categories of hydraulic problems. Condensed table causes of trouble and their effects in hydraulic installations source of trouble, effects 1 mechanical drive 2 suction line 3 pump 4 pressure line 5 return line 6 pressure valves a excessive noises 1. The electric motor is driving the hydraulic pump at a speed that is higher than the pumps rating. The new pump is delivering a maximum pressure of 1,000 psi and appears to be creating heat. We will introduce many aspects of troubleshooting hydraulic systems and will share information that will help you to better understand and enhance the operation of. If you have a problem in working conditions, the troubleshooting table will help you to find out what is wrong failurecausesolution. In any troubleshooting situation, no matter how simple or complex the hydraulic system, always start with the basics. When a hydraulic system has problems, it is common practice to first look at the pump. This study relates to the description of a relief valve briefly and troubleshooting due to pressure rise in hydraulic system.
Locating the area of the leak will help in determining the appropriate replacement or repair. Steps that can be taken to stop pump cavitation include. We will introduce many aspects of troubleshooting hydraulic systems and will share information that will help you to better understand and enhance the operation of your hydraulic equipment. Hydraulics trouble shooting guide advanced fluid systems.
These can be found as a single action or double action pump. Hydraulic trouble shooting hydraulic systems can be very simple, such as a hand pump pumping up a small hydraulic jack, or very complex, with several pumps, complex valving, accumulators, and many cylinders and other actuators. Hydraulic troubleshooting guide in different hydraulic applications such as hydraulic pump troubleshooting guide, simple hydraulic system and hydraulic cylinder troubleshooting, hydraulic pump problems and so much more other hydraulic products problems, like hydraulic valve troubleshooting, hydraulic manifold block problems and hydraulic dump valve failed. Condition likely cause correction muncie power products. Power your custom hydraulic cylinders with powerful and durable hydraulic pumps. Condensed table causes of trouble and their effects in hydraulic installations. Hydraulic hand pump operating instructions page 5 operating instructions how to operate a hydraulic hand pump before operating the hydraulic hand pump read and remember the simple rules listed on page twelve 12 in the care and maintenance section of this manual. Hydraulic troubleshooting guide in different hydraulic applications such as hydraulic pump troubleshooting guide, simple hydraulic system and hydraulic cylinder troubleshooting,hydraulic pump problems and so much more other hydraulic products problems, like hydraulic valve troubleshooting,hydraulic manifold block problems and hydraulic dump valve failed. For example, an inadequate size filter on the inlet of a pump can cause cavitation and subsequent damage to the pump.
Troubleshooting and preventive maintenance of hydraulic systems. The following hydraulic connection recommendations are important for optimum pump efficiency and extended motor seal life. Misalignment longcoupled pump align pump and motor. Logical troubleshooting in hydraulic systems is intended as a guide to. Basic hydraulic troubleshooting training system amatrol. Hydraulic line from proportional valve to pump control port 4. Following the pump mounting guidelines will insure proper priming of the pump and avoid premature seal failure. Troubleshooting hydraulic systems, and operating and maintaining your own hydraulic equipment starts with simply understanding how and why all the various components work. Hydraulic gear pump these use gears to move the hydraulic fluid through the system. Multiple housing lengths give the option of adding additional dirt holding capacity. A horizontal, doublesuction pump may be fitted with a 90deg elbow mounted on the suction nozzle in such a way that the line leading to the elbow is parallel with the axis of the pump shaft see figure 1. Pressure pump and related control components components on top of press dbet card in control box legend 1. The tank, valves and cylinders were cleaned and a replacement pump installed. Hydraulic system troubleshooting pellerin milnor corporation.
Hydraulic system troubleshooting pellerin milnor corporation figure 35. Common conditions requiring pump troubleshooting expertise are cavitation, hydraulic imbalance, undersized shafts, and mechanical seal failure. Listen for distinctive cavitation sound from pump and verify all hydraulic hoses. Aug 25, 20 when a hydraulic system has problems, it is common practice to first look at the pump. Yet, most of the problems encountered in all of these systems are often traced down to a few basic issues. It is recommended the manual is kept uptodate by checking the edition and date code at the bottom of this page by utilizing the hytorc website and downloading a copy of the most recent edition as needed. Hydraulic tools for troubleshooting any hydraulic system. Logical troubleshooting in hydraulic systems is intended as a guide to systematic fault findings in a hydraulic system. The recirculation pump is part of the oil cooling and filtering system. If in doubt, always refer to the original equipment manufacturer. I hear the pump turning but it does not build pressure a.