{"id":630,"date":"2023-10-07T07:40:15","date_gmt":"2023-10-07T07:40:15","guid":{"rendered":"https:\/\/swingbearing.net\/?p=630"},"modified":"2024-06-02T04:45:30","modified_gmt":"2024-06-02T04:45:30","slug":"fault-inspection-of-excavator-without-rotation","status":"publish","type":"post","link":"https:\/\/swingbearing.net\/cs\/fault-inspection-of-excavator-without-rotation\/","title":{"rendered":"Kontrola z\u00e1vad r\u00fdpadla bez ot\u00e1\u010den\u00ed"},"content":{"rendered":"<h2 class=\"wp-block-heading\" id=\"fault-of-excavator-without-rotation-it-was-found-that-there-was-no-rotation-movement-while-other-movements-were-normal\">Porucha rypadla bez ot\u00e1\u010den\u00ed: Bylo zji\u0161t\u011bno, \u017ee nedo\u0161lo k \u017e\u00e1dn\u00e9mu rota\u010dn\u00edmu pohybu, zat\u00edmco ostatn\u00ed pohyby byly norm\u00e1ln\u00ed.<\/h2>\n\n\n\n<p>Kdy\u017e je ovl\u00e1dac\u00ed rukoje\u0165 v poloze pro ot\u00e1\u010den\u00ed, \u0159\u00eddic\u00ed olej se dostane k \u0159\u00eddic\u00edmu ventilu a tla\u010d\u00ed na t\u00e1hlo oto\u010dn\u00e9ho ventilu, aby se do oto\u010dn\u00e9ho motoru dostal vysokotlak\u00fd olej dod\u00e1van\u00fd zadn\u00edm pracovn\u00edm olejov\u00fdm \u010derpadlem; Sou\u010dasn\u011b se p\u0159eru\u0161\u00ed olejov\u00fd okruh, kter\u00fd \u0159\u00edd\u00ed n\u00e1vrat oleje do n\u00e1dr\u017ee, \u010d\u00edm\u017e se zv\u00fd\u0161\u00ed tlak v uvol\u0148ovac\u00edm ventilu brzdy, zatla\u010d\u00ed se na jeho ventilovou ty\u010d, aby se do brzdov\u00e9ho p\u00edstu dostal dal\u0161\u00ed pomocn\u00fd tlakov\u00fd olej, otev\u0159e se za\u0159\u00edzen\u00ed kyvn\u00e9 brzdy a za\u010dne p\u016fsobit kyvn\u00fd motor; rota\u010dn\u00ed motor vyvozuje v\u00fdkon p\u0159es mal\u00fd p\u0159evod p\u0159evodovky, kter\u00fd se spoj\u00ed s oto\u010dn\u00fdm ozuben\u00fdm krou\u017ekem a vytvo\u0159\u00ed rota\u010dn\u00ed pohyb.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"fault-cause-analysis-and-inspection\">Anal\u00fdza p\u0159\u00ed\u010din poruch a kontrola:<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"550\" height=\"400\" src=\"https:\/\/swingbearing.net\/wp-content\/uploads\/2024\/06\/550400.jpg\" alt=\"excavator without rotation\" class=\"wp-image-3750\" srcset=\"https:\/\/swingbearing.net\/wp-content\/uploads\/2024\/06\/550400.jpg 550w, https:\/\/swingbearing.net\/wp-content\/uploads\/2024\/06\/550400-300x218.jpg 300w, https:\/\/swingbearing.net\/wp-content\/uploads\/2024\/06\/550400-18x12.jpg 18w\" sizes=\"(max-width: 550px) 100vw, 550px\" \/><figcaption class=\"wp-element-caption\">excavator without rotation<\/figcaption><\/figure>\n\n\n\n<ol class=\"wp-block-list\">\n<li><\/li>\n<\/ol>\n\n\n\n<p>Z principu fungov\u00e1n\u00ed rota\u010dn\u00edho mechanismu vypl\u00fdvaj\u00ed t\u0159i p\u0159\u00ed\u010diny poruchy, a to hlavn\u00ed pracovn\u00ed olejov\u00fd okruh, mechanick\u00fd p\u0159evod a kontroln\u00ed olejov\u00fd okruh.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"1-inspection-of-the-main-working-oil-circuit\">(1) Kontrola hlavn\u00edho pracovn\u00edho olejov\u00e9ho okruhu<\/h3>\n\n\n\n<p>Pokud je tlak v hlavn\u00edm olejov\u00e9m okruhu kyvn\u00e9ho motoru n\u00edzk\u00fd, nen\u00ed mo\u017en\u00e9 vytvo\u0159it kyvnou akci. Zm\u011b\u0159te tlak v syst\u00e9mu hlavn\u00edho pracovn\u00edho olejov\u00e9ho okruhu. Na v\u00fdstupu tlaku zadn\u00edho pracovn\u00edho olejov\u00e9ho \u010derpadla je vnit\u0159n\u00ed \u0161estihrann\u00e1 olejov\u00e1 z\u00e1tka. Vyjm\u011bte ji a nainstalujte tlakom\u011br. Ovl\u00e1dejte oto\u010dnou rukoje\u0165 pro zrychlen\u00ed vzn\u011btov\u00e9ho motoru. Nam\u011b\u0159en\u00fd tlak dos\u00e1hne 23,5 MPa, co\u017e je norm\u00e1ln\u00ed pracovn\u00ed tlak syst\u00e9mu. To znamen\u00e1, \u017ee v\u0161echny hydraulick\u00e9 sou\u010d\u00e1sti hlavn\u00edho okruhu pracovn\u00edho oleje jsou v norm\u00e1lu.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/swingbearing.net\/cs\/home\/excavator-parts\/\"><img decoding=\"async\" width=\"600\" height=\"600\" src=\"https:\/\/swingbearing.net\/wp-content\/uploads\/2024\/05\/sw22.jpg\" alt=\"Kyvn\u00e1 lo\u017eiska bagru\" class=\"wp-image-2930\" srcset=\"https:\/\/swingbearing.net\/wp-content\/uploads\/2024\/05\/sw22.jpg 600w, https:\/\/swingbearing.net\/wp-content\/uploads\/2024\/05\/sw22-300x300.jpg 300w, https:\/\/swingbearing.net\/wp-content\/uploads\/2024\/05\/sw22-150x150.jpg 150w, https:\/\/swingbearing.net\/wp-content\/uploads\/2024\/05\/sw22-12x12.jpg 12w, https:\/\/swingbearing.net\/wp-content\/uploads\/2024\/05\/sw22-100x100.jpg 100w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/a><figcaption class=\"wp-element-caption\">Kyvn\u00e1 lo\u017eiska bagru<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"2-inspection-of-mechanical-transmission-part\">(2) Kontrola mechanick\u00e9 \u010d\u00e1sti p\u0159evodovky<\/h3>\n\n\n\n<p>Rota\u010dn\u00ed motor p\u0159en\u00e1\u0161\u00ed v\u00fdkon p\u0159es mal\u00e9 ozuben\u00e9 kolo p\u0159evodovky, kter\u00e9 se ot\u00e1\u010d\u00ed kolem rota\u010dn\u00edho ozuben\u00e9ho krou\u017eku. Pokud se b\u011bhem tohoto procesu v\u00fdstupu v\u00fdkonu zaseknou ozuben\u00e1 kola, kter\u00e1 se vz\u00e1jemn\u011b propojuj\u00ed, nedojde ani k ot\u00e1\u010den\u00ed.<\/p>\n\n\n\n<p>Obecn\u011b m\u016f\u017ee abnorm\u00e1ln\u00ed z\u00e1b\u011br p\u0159evodovky zp\u016fsobovat abnorm\u00e1ln\u00ed hluk. V sou\u010dasn\u00e9 dob\u011b \u0159idi\u010d b\u011bhem provozu nesly\u0161el \u017e\u00e1dn\u00fd abnorm\u00e1ln\u00ed zvuk, tak\u017ee mechanick\u00e9 z\u00e1vady p\u0159evodovky lze do\u010dasn\u011b vylou\u010dit.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"3-inspection-of-control-oil-circuit\">(3) Kontrola kontroln\u00edho olejov\u00e9ho okruhu<\/h3>\n\n\n\n<p>Proto\u017ee v\u0161echny ostatn\u00ed \u010dinnosti r\u00fdpadla jsou norm\u00e1ln\u00ed, znamen\u00e1 to, \u017ee pomocn\u00e9 olejov\u00e9 \u010derpadlo, kter\u00e9 zaji\u0161\u0165uje kontroln\u00ed tlak oleje, pracuje norm\u00e1ln\u011b. Existuj\u00ed t\u0159i okruhy \u0159\u00eddic\u00edho oleje pro rota\u010dn\u00ed \u010dinnost, a to olejov\u00fd okruh, kter\u00fd ovl\u00e1d\u00e1 d\u0159\u00edk rota\u010dn\u00edho ventilu, uvol\u0148ovac\u00ed ventil brzdy a olejov\u00fd okruh, kter\u00fd vstupuje do p\u00edstu parkovac\u00ed brzdy. Konkr\u00e9tn\u00ed anal\u00fdza je n\u00e1sleduj\u00edc\u00ed.<\/p>\n\n\n\n<p>P\u0159i ovl\u00e1d\u00e1n\u00ed oto\u010dn\u00e9 rukojeti se p\u0159i dotyku tlakov\u00e9 olejov\u00e9 trubky oto\u010dn\u00e9ho motoru objev\u00ed siln\u00fd olejov\u00fd proud, co\u017e znamen\u00e1, \u017ee hlavn\u00ed pracovn\u00ed tlakov\u00fd olej dos\u00e1hl oto\u010dn\u00e9ho motoru, d\u0159\u00edk oto\u010dn\u00e9ho ventilu ovl\u00e1dac\u00edho ventilu lze norm\u00e1ln\u011b otev\u0159\u00edt a okruh ovl\u00e1dac\u00edho oleje funguje norm\u00e1ln\u011b. Zm\u011b\u0159te tlak oleje na p\u00edst parkovac\u00ed brzdy. Otev\u0159ete trubkov\u00fd spoj olejov\u00e9ho okruhu k rota\u010dn\u00edmu motoru, nainstalujte trojcestn\u00fd spoj a tlakom\u011br a nam\u011b\u0159en\u00fd tlak dos\u00e1hne 4 MPa, co\u017e znamen\u00e1, \u017ee tlak olejov\u00e9ho okruhu je norm\u00e1ln\u00ed.<\/p>\n\n\n\n<p>Zm\u011b\u0159te tlak oleje na uvol\u0148ovac\u00ed ventil brzd. Otev\u0159ete trubkov\u00fd spoj olejov\u00e9ho okruhu k rota\u010dn\u00edmu motoru, nainstalujte trojcestn\u00fd spoj a manometr a nam\u011b\u0159en\u00fd tlak je 0,4-0,6 MPa. Je z\u0159ejm\u00e9, \u017ee tento tlak je p\u0159\u00edli\u0161 n\u00edzk\u00fd (norm\u00e1ln\u00ed pracovn\u00ed tlak by m\u011bl b\u00fdt 4 MPa) na otev\u0159en\u00ed uvol\u0148ovac\u00edho ventilu brzdy a \u0159\u00eddic\u00ed olej z druh\u00e9ho okruhu nem\u016f\u017ee proudit do brzdov\u00e9ho p\u00edstu, nato\u017e aby otev\u0159el za\u0159\u00edzen\u00ed rota\u010dn\u00ed brzdy. Proto nedoch\u00e1z\u00ed k \u017e\u00e1dn\u00e9mu p\u016fsoben\u00ed p\u0159i ot\u00e1\u010den\u00ed. N\u00edzk\u00fd tlak v tomto olejov\u00e9m okruhu m\u00e1 dv\u011b p\u0159\u00ed\u010diny. Jedn\u00edm z nich je, \u017ee \u0159\u00eddic\u00ed ventil net\u011bsn\u00ed, co\u017e zp\u016fsobuje pokles tlaku oleje vstupuj\u00edc\u00edho do uvol\u0148ovac\u00edho ventilu brzd. (P\u0159ipojte tlakom\u011br ke spoji potrub\u00ed ovl\u00e1dac\u00edho olejov\u00e9ho potrub\u00ed od ovl\u00e1dac\u00edho ventilu k uvol\u0148ovac\u00edmu ventilu brzd a nam\u011b\u0159en\u00fd tlak oleje je pouze 0,4-0,6 MPa, co\u017e znamen\u00e1, \u017ee \u00fasudek o net\u011bsnosti ovl\u00e1dac\u00edho ventilu je spr\u00e1vn\u00fd); Druh\u00fdm d\u016fvodem je, \u017ee uvol\u0148ovac\u00ed ventil brzd net\u011bsn\u00ed v d\u016fsledku opot\u0159eben\u00ed, co\u017e zvy\u0161uje mezeru ulo\u017een\u00ed (po demont\u00e1\u017ei a kontrole d\u0159\u00edk ventilu a otvor ventilu dob\u0159e sed\u00ed a nedoch\u00e1z\u00ed k \u017e\u00e1dn\u00e9mu jevu zasek\u00e1v\u00e1n\u00ed).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"troubleshooting-an-in-depth-guide-to-diagnosing-and-resolving-control-valve-malfunctions-in-excavators\">Troubleshooting: An In-Depth Guide to Diagnosing and Resolving Control Valve Malfunctions in Excavators<\/h2>\n\n\n\n<p>Excavators are complex pieces of machinery that rely heavily on their hydraulic systems to perform a variety of tasks, from digging and lifting to rotating and moving. One of the critical components in this hydraulic system is the control valve. The control valve regulates the flow and direction of hydraulic fluid, enabling precise control over the excavator&#8217;s movements. However, when a malfunction occurs, it can severely impact the performance and efficiency of the machine. This detailed guide delves into the process of troubleshooting a control valve malfunction, including the steps taken to diagnose the issue, the repair process, and the measures to prevent future problems.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"understanding-the-role-of-control-valves-in-excavators\">Understanding the Role of Control Valves in Excavators<\/h2>\n\n\n\n<p>Control valves are essential for directing hydraulic fluid to different parts of the excavator. They are responsible for controlling the flow rate and pressure of the hydraulic fluid, which in turn controls the speed and force of the machine\u2019s movements. The primary functions of control valves in an excavator include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Regulating Fluid Flow:<\/strong> Control valves manage the flow of hydraulic fluid to various actuators, such as cylinders and motors, which drive the excavator\u2019s movements.<\/li>\n\n\n\n<li><strong>Controlling Direction:<\/strong> By adjusting the direction of fluid flow, control valves determine the direction in which the machine\u2019s components move.<\/li>\n\n\n\n<li><strong>Maintaining Pressure:<\/strong> Control valves help maintain the necessary pressure levels within the hydraulic system to ensure efficient operation.<\/li>\n<\/ul>\n\n\n\n<p>Given their critical role, any malfunction in the control valve can lead to significant operational issues, such as erratic movements, reduced power, and complete failure of specific functions.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"symptoms-of-control-valve-malfunctions\">Symptoms of Control Valve Malfunctions<\/h2>\n\n\n\n<p>Before diving into the troubleshooting process, it\u2019s essential to recognize the common symptoms of control valve malfunctions. These symptoms can help in early detection and prompt action to prevent further damage to the excavator. Common signs of control valve issues include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Erratic Movements:<\/strong> Inconsistent or jerky movements of the excavator\u2019s arm, bucket, or tracks.<\/li>\n\n\n\n<li><strong>Loss of Power:<\/strong> Reduced force or speed in hydraulic functions, indicating a possible issue with fluid flow or pressure.<\/li>\n\n\n\n<li><strong>Hydraulic Fluid Leaks:<\/strong> Visible leaks around the control valve area, suggesting seal or component failure.<\/li>\n\n\n\n<li><strong>Unusual Noises:<\/strong> Hissing, whining, or knocking sounds from the hydraulic system, which could indicate fluid flow disruptions or air ingress.<\/li>\n\n\n\n<li><strong>P\u0159eh\u0159\u00e1t\u00ed:<\/strong> Excessive heat in the hydraulic system, often caused by restricted fluid flow or pressure imbalances.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"diagnosing-the-control-valve-malfunction\">Diagnosing the Control Valve Malfunction<\/h2>\n\n\n\n<p>The first step in troubleshooting a control valve malfunction is a thorough diagnosis. This involves a systematic approach to identify the root cause of the problem. Here\u2019s a detailed breakdown of the diagnostic process:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"1-visual-inspection\">1. Visual Inspection<\/h3>\n\n\n\n<p>Begin with a visual inspection of the control valve and the surrounding hydraulic components. Look for signs of wear, damage, or leaks. Pay close attention to the following:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Seals and Gaskets:<\/strong> Check for any visible cracks, tears, or deterioration in seals and gaskets that might cause fluid leaks.<\/li>\n\n\n\n<li><strong>Connections and Hoses:<\/strong> Inspect the hydraulic hoses and connections for signs of wear, damage, or loose fittings.<\/li>\n\n\n\n<li><strong>Valve Body:<\/strong> Examine the control valve body for any signs of physical damage, such as cracks or corrosion.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"2-hydraulic-fluid-analysis\">2. Hydraulic Fluid Analysis<\/h3>\n\n\n\n<p>The condition of the hydraulic fluid can provide valuable insights into the health of the control valve and the entire hydraulic system. Perform the following checks:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Fluid Level:<\/strong> Ensure that the hydraulic fluid level is within the recommended range. Low fluid levels can cause air to enter the system, leading to erratic movements and reduced performance.<\/li>\n\n\n\n<li><strong>Fluid Quality:<\/strong> Check the color, viscosity, and presence of contaminants in the hydraulic fluid. Dark, cloudy, or contaminated fluid indicates the need for a fluid change and potential issues with the control valve.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"3-pressure-testing\">3. Pressure Testing<\/h3>\n\n\n\n<p>Pressure testing the hydraulic system can help identify issues related to fluid flow and pressure regulation. Use a hydraulic pressure gauge to perform the following tests:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>System Pressure:<\/strong> Measure the overall system pressure to ensure it is within the manufacturer\u2019s specifications. Deviations from the recommended pressure levels can indicate valve malfunctions.<\/li>\n\n\n\n<li><strong>Pressure Drops:<\/strong> Check for any significant pressure drops across the control valve, which can suggest internal leaks or blockages.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"4-functional-testing\">4. Functional Testing<\/h3>\n\n\n\n<p>Conduct functional tests to observe the performance of the control valve under different operating conditions. These tests can help pinpoint specific issues:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Actuator Response:<\/strong> Operate the excavator\u2019s functions, such as lifting the arm, rotating the body, or moving the tracks, and observe the response. Slow, weak, or inconsistent movements can indicate control valve problems.<\/li>\n\n\n\n<li><strong>Directional Control:<\/strong> Test the directional control by moving the actuators in various directions. Difficulty in changing direction or delayed responses can be signs of valve issues.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"identifying-the-root-cause-leakage-in-the-control-valve\">Identifying the Root Cause: Leakage in the Control Valve<\/h2>\n\n\n\n<p>In this case study, the primary symptom observed was erratic rotational movements of the excavator. Upon conducting the above diagnostic steps, it was determined that the main cause of the malfunction was leakage in the control valve. Here\u2019s a detailed analysis of the findings:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"1-visual-inspection-1\">1. Visual Inspection<\/h3>\n\n\n\n<p>During the visual inspection, hydraulic fluid leaks were detected around the control valve area. The seals and gaskets appeared worn and deteriorated, indicating a potential source of the leakage.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"2-hydraulic-fluid-analysis-2\">2. Hydraulic Fluid Analysis<\/h3>\n\n\n\n<p>The hydraulic fluid analysis revealed contamination with particles and moisture, which can accelerate wear and damage to the control valve components. The fluid\u2019s color and viscosity suggested that it had not been changed according to the recommended maintenance schedule.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"3-pressure-testing-3\">3. Pressure Testing<\/h3>\n\n\n\n<p>Pressure testing indicated significant pressure drops across the control valve, confirming internal leaks. The system pressure was also lower than the manufacturer\u2019s specifications, further supporting the diagnosis of valve leakage.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"4-functional-testing-4\">4. Functional Testing<\/h3>\n\n\n\n<p>Functional testing showed inconsistent and weak rotational movements, which aligned with the symptoms of control valve leakage. The directional control was also affected, with delays and difficulties in changing directions.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"repairing-the-control-valve\">Repairing the Control Valve<\/h2>\n\n\n\n<p>Given the complexity and critical role of the control valve, repairing it requires careful attention and expertise. Here\u2019s a step-by-step guide to the repair process:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"1-removing-the-control-valve\">1. Removing the Control Valve<\/h3>\n\n\n\n<p>To access and repair the control valve, it is necessary to remove it from the excavator. This involves the following steps:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Odpojen\u00ed hydraulick\u00e9ho veden\u00ed:<\/strong> Carefully disconnect the hydraulic lines connected to the control valve, ensuring to cap them to prevent fluid spillage and contamination.<\/li>\n\n\n\n<li><strong>Odpojen\u00ed elektrick\u00fdch p\u0159\u00edpojek:<\/strong> If the control valve has any electrical connections, disconnect them to facilitate removal.<\/li>\n\n\n\n<li><strong>Removing Mounting Bolts:<\/strong> Remove the bolts or screws securing the control valve to the hydraulic system or frame.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"2-disassembling-the-control-valve\">2. Disassembling the Control Valve<\/h3>\n\n\n\n<p>Once the control valve is removed, disassemble it to inspect and replace the damaged components. This involves:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Opening the Valve Housing:<\/strong> Carefully open the control valve housing, taking note of the arrangement and orientation of internal components.<\/li>\n\n\n\n<li><strong>Inspecting Internal Components:<\/strong> Examine the internal components, such as seals, gaskets, and valve spools, for signs of wear, damage, or contamination.<\/li>\n\n\n\n<li><strong>Cleaning and Replacing Parts:<\/strong> Clean all components thoroughly and replace any worn or damaged parts with new ones. Ensure that the replacement parts meet the manufacturer\u2019s specifications.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"3-reassembling-the-control-valve\">3. Reassembling the Control Valve<\/h3>\n\n\n\n<p>After replacing the damaged components, reassemble the control valve with careful attention to detail:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Reinstalling Internal Components:<\/strong> Reinstall the internal components in the correct order and orientation, ensuring proper alignment and fit.<\/li>\n\n\n\n<li><strong>Sealing the Valve Housing:<\/strong> Securely close the valve housing, ensuring that all seals and gaskets are correctly positioned to prevent future leaks.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"4-reinstalling-the-control-valve\">4. Reinstalling the Control Valve<\/h3>\n\n\n\n<p>With the control valve repaired and reassembled, reinstall it into the excavator:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Mounting the Valve:<\/strong> Secure the control valve to the hydraulic system or frame using the mounting bolts or screws.<\/li>\n\n\n\n<li><strong>Reconnecting Hydraulic Lines:<\/strong> Reconnect the hydraulic lines, ensuring that they are securely fastened and free from leaks.<\/li>\n\n\n\n<li><strong>Reconnecting Electrical Connections:<\/strong> If applicable, reconnect any electrical connections.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"5-testing-the-repaired-control-valve\">5. Testing the Repaired Control Valve<\/h3>\n\n\n\n<p>After reinstalling the control valve, perform comprehensive tests to ensure that the repair was successful:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Tlakov\u00e1 zkou\u0161ka:<\/strong> Conduct pressure tests to verify that the hydraulic system pressure is within the manufacturer\u2019s specifications and that there are no significant pressure drops across the control valve.<\/li>\n\n\n\n<li><strong>Funk\u010dn\u00ed testov\u00e1n\u00ed:<\/strong> Operate the excavator\u2019s functions to ensure smooth and consistent movements. Check for any signs of leaks or abnormalities.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"preventing-future-control-valve-malfunctions\">Preventing Future Control Valve Malfunctions<\/h2>\n\n\n\n<p>To prevent future control valve malfunctions and ensure the longevity of the excavator\u2019s hydraulic system, implement the following maintenance practices:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"1-regular-fluid-checks-and-changes\">1. Regular Fluid Checks and Changes<\/h3>\n\n\n\n<p>Regularly check the hydraulic fluid level and quality, and change it according to the manufacturer\u2019s recommendations. Using clean, high-quality hydraulic fluid helps prevent contamination and reduces wear on the control valve components.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"2-routine-inspection-and-replacement-of-seals-and-gaskets\">2. Routine Inspection and Replacement of Seals and Gaskets<\/h3>\n\n\n\n<p>Inspect seals and gaskets regularly for signs of wear and deterioration. Replace them as needed to prevent leaks and maintain optimal pressure within the hydraulic system.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"3-regular-maintenance-schedule\">3. Regular Maintenance Schedule<\/h3>\n\n\n\n<p>Implement a regular maintenance schedule that includes checking the condition of the control valve, hydraulic lines, and other components. Timely maintenance helps identify and address potential issues before they lead to significant malfunctions.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"4-operator-training\">4. Operator Training<\/h3>\n\n\n\n<p>Ensure that operators are trained in the correct use and maintenance of the excavator\u2019s hydraulic system. Proper operation and handling can reduce the risk of damage and prolong the lifespan of the control valve and other components.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"5-using-genuine-parts\">5. Using Genuine Parts<\/h3>\n\n\n\n<p>Always use genuine parts and components that meet the manufacturer\u2019s specifications when repairing or replacing parts of the hydraulic system. This ensures compatibility and reliability, reducing the risk of future malfunctions.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"380\" height=\"262\" src=\"https:\/\/swingbearing.net\/wp-content\/uploads\/2023\/09\/CAT.jpg\" alt=\"Kyvn\u00e1 lo\u017eiska\" class=\"wp-image-504\" srcset=\"https:\/\/swingbearing.net\/wp-content\/uploads\/2023\/09\/CAT.jpg 380w, https:\/\/swingbearing.net\/wp-content\/uploads\/2023\/09\/CAT-300x207.jpg 300w\" sizes=\"(max-width: 380px) 100vw, 380px\" \/><\/figure>\n\n\n\n<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><h2>Obsah<\/h2><nav><ul><li><a href=\"#fault-of-excavator-without-rotation-it-was-found-that-there-was-no-rotation-movement-while-other-movements-were-normal\">Porucha rypadla bez ot\u00e1\u010den\u00ed: Bylo zji\u0161t\u011bno, \u017ee nedo\u0161lo k \u017e\u00e1dn\u00e9mu rota\u010dn\u00edmu pohybu, zat\u00edmco ostatn\u00ed pohyby byly norm\u00e1ln\u00ed.<\/a><\/li><li><a href=\"#fault-cause-analysis-and-inspection\">Anal\u00fdza p\u0159\u00ed\u010din poruch a kontrola:<\/a><ul><li><a href=\"#1-inspection-of-the-main-working-oil-circuit\">(1) Kontrola hlavn\u00edho pracovn\u00edho olejov\u00e9ho okruhu<\/a><\/li><li><a href=\"#2-inspection-of-mechanical-transmission-part\">(2) Kontrola mechanick\u00e9 \u010d\u00e1sti p\u0159evodovky<\/a><\/li><li><a href=\"#3-inspection-of-control-oil-circuit\">(3) Kontrola kontroln\u00edho olejov\u00e9ho okruhu<\/a><\/li><\/ul><\/li><li><a href=\"#troubleshooting-an-in-depth-guide-to-diagnosing-and-resolving-control-valve-malfunctions-in-excavators\">Troubleshooting: An In-Depth Guide to Diagnosing and Resolving Control Valve Malfunctions in Excavators<\/a><\/li><li><a href=\"#understanding-the-role-of-control-valves-in-excavators\">Understanding the Role of Control Valves in Excavators<\/a><\/li><li><a href=\"#symptoms-of-control-valve-malfunctions\">Symptoms of Control Valve Malfunctions<\/a><\/li><li><a href=\"#diagnosing-the-control-valve-malfunction\">Diagnosing the Control Valve Malfunction<\/a><ul><li><a href=\"#1-visual-inspection\">1. Visual Inspection<\/a><\/li><li><a href=\"#2-hydraulic-fluid-analysis\">2. Hydraulic Fluid Analysis<\/a><\/li><li><a href=\"#3-pressure-testing\">3. Pressure Testing<\/a><\/li><li><a href=\"#4-functional-testing\">4. Functional Testing<\/a><\/li><\/ul><\/li><li><a href=\"#identifying-the-root-cause-leakage-in-the-control-valve\">Identifying the Root Cause: Leakage in the Control Valve<\/a><ul><li><a href=\"#1-visual-inspection-1\">1. Visual Inspection<\/a><\/li><li><a href=\"#2-hydraulic-fluid-analysis-2\">2. Hydraulic Fluid Analysis<\/a><\/li><li><a href=\"#3-pressure-testing-3\">3. Pressure Testing<\/a><\/li><li><a href=\"#4-functional-testing-4\">4. Functional Testing<\/a><\/li><\/ul><\/li><li><a href=\"#repairing-the-control-valve\">Repairing the Control Valve<\/a><ul><li><a href=\"#1-removing-the-control-valve\">1. Removing the Control Valve<\/a><\/li><li><a href=\"#2-disassembling-the-control-valve\">2. Disassembling the Control Valve<\/a><\/li><li><a href=\"#3-reassembling-the-control-valve\">3. Reassembling the Control Valve<\/a><\/li><li><a href=\"#4-reinstalling-the-control-valve\">4. Reinstalling the Control Valve<\/a><\/li><li><a href=\"#5-testing-the-repaired-control-valve\">5. Testing the Repaired Control Valve<\/a><\/li><\/ul><\/li><li><a href=\"#preventing-future-control-valve-malfunctions\">Preventing Future Control Valve Malfunctions<\/a><ul><li><a href=\"#1-regular-fluid-checks-and-changes\">1. Regular Fluid Checks and Changes<\/a><\/li><li><a href=\"#2-routine-inspection-and-replacement-of-seals-and-gaskets\">2. Routine Inspection and Replacement of Seals and Gaskets<\/a><\/li><li><a href=\"#3-regular-maintenance-schedule\">3. Regular Maintenance Schedule<\/a><\/li><li><a href=\"#4-operator-training\">4. Operator Training<\/a><\/li><li><a href=\"#5-using-genuine-parts\">5. Using Genuine Parts<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>","protected":false},"excerpt":{"rendered":"<p>Fault of excavator without rotation: It was found that there was no rotation movement, while other movements were normal. When the operating handle is placed in the rotary position, the control oil reaches the control valve and pushes the rotary valve rod to feed the high-pressure oil provided by the rear working oil pump into [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":631,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_breakdance_hide_in_design_set":false,"_breakdance_tags":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-630","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/swingbearing.net\/cs\/wp-json\/wp\/v2\/posts\/630","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/swingbearing.net\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/swingbearing.net\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/swingbearing.net\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/swingbearing.net\/cs\/wp-json\/wp\/v2\/comments?post=630"}],"version-history":[{"count":0,"href":"https:\/\/swingbearing.net\/cs\/wp-json\/wp\/v2\/posts\/630\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/swingbearing.net\/cs\/wp-json\/wp\/v2\/media\/631"}],"wp:attachment":[{"href":"https:\/\/swingbearing.net\/cs\/wp-json\/wp\/v2\/media?parent=630"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/swingbearing.net\/cs\/wp-json\/wp\/v2\/categories?post=630"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/swingbearing.net\/cs\/wp-json\/wp\/v2\/tags?post=630"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}