{"id":2624,"date":"2026-05-18T07:05:51","date_gmt":"2026-05-18T07:05:51","guid":{"rendered":"https:\/\/seimtfluid.com\/?p=2624"},"modified":"2026-08-29T13:52:03","modified_gmt":"2026-08-29T13:52:03","slug":"a4vg-hydraulic-pump-troubleshooting-repair-guide","status":"publish","type":"post","link":"https:\/\/seimtfluid.com\/es\/a4vg-hydraulic-pump-troubleshooting-repair-guide\/","title":{"rendered":"Gu\u00eda de resoluci\u00f3n de aver\u00edas y reparaci\u00f3n de bombas hidr\u00e1ulicas de la serie A4VG"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"2624\" class=\"elementor elementor-2624\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-27b3ea7b e-flex e-con-boxed e-con e-parent\" data-id=\"27b3ea7b\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-12ab974b elementor-widget elementor-widget-text-editor\" data-id=\"12ab974b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<!-- SEO & Schema Markup (JSON-LD) for FAQ -->\n<script type=\"application\/ld+json\"><span data-mce-type=\"bookmark\" style=\"display: inline-block; width: 0px; overflow: hidden; line-height: 0;\" class=\"mce_SELRES_start\">\ufeff<\/span>\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Should I replace just the seal kit or the entire A4VG rotary group?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Replace only the seal kit if your pump has external oil leaks but internal mechanical surfaces (cylinder block, valve plate, piston shoes) show no heavy scoring or clearance wear. If there is low pressure, high fluid temperature, or excessive case drain flow, the rotary group is likely worn and requires a full inspection\/replacement.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I order A4VG spare parts using only the pump frame size or displacement?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"No. The displacement (e.g., A4VG90) alone is not enough. You must provide the complete model designation, type code, and nameplate photos because components like valve plates, shafts, and swash plates differ based on control type, rotation, and series.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the primary cause of excessive case drain flow in Rexroth A4VG pumps?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Excessive case drain flow is mainly caused by internal wear between high-pressure mating surfaces, particularly the cylinder block and valve plate, worn piston shoes, or damaged cylinder bores.\"\n      }\n    }\n  ]\n}\n<\/script>\n<div class=\"a4vg-guide-wrapper\">\n\n<!-- Article Intro (Focus Keyword added right at the beginning) -->\n\nWelcome to our comprehensive <strong>A4VG hydraulic pump troubleshooting<\/strong> and repair guide. The Bosch Rexroth A4VG is an axial piston variable displacement pump engineered for closed-circuit hydrostatic transmissions. Widely utilized in mobile machinery, construction equipment, and industrial applications, A4VG pumps deliver precise directional control and reliable variable hydraulic flow.\n\nOperating under demanding pressures and high-speed conditions, performance degrades over time due to internal component wear, fluid contamination, incorrect charge pressure, or thermal breakdown. This <strong>A4VG hydraulic pump troubleshooting<\/strong> manual outlines common failure modes, diagnostic workflows, and spare part selection across <strong>Small, Medium, and Large Frame A4VG series (A4VG28 through A4VG280)<\/strong>.\n\n<!-- Featured Image Placeholder with Keyword Alt Tag -->\n<div style=\"text-align: center; margin: 20px 0;\">\n\n<img decoding=\"async\" style=\"max-width: 100%; height: auto; border-radius: 6px;\" src=\"https:\/\/seimtfluid.com\/wp-content\/uploads\/Rexroth-A4VG-pump-assembly-and-internal-rotating-components.webp\" alt=\"A4VG hydraulic pump troubleshooting diagram showing rotary group and valve plate\" \/>\n<p style=\"font-size: 13px; color: #666; margin-top: 5px;\">Figure 1: Bosch Rexroth A4VG pump assembly and internal rotating components.<\/p>\n\n<\/div>\n<blockquote style=\"background: #f8f9fa; border-left: 4px solid #0056b3; padding: 12px 18px; margin: 20px 0;\"><strong>Important Pre-Repair Note:<\/strong> A4VG pumps feature diverse control modules (HD, HW, EP, DG, etc.) and application specs. Always verify nameplate data, model codes, and exact dimensions prior to ordering spare parts or attempting disassembly. You can also refer to the <a href=\"https:\/\/www.boschrexroth.com\/\" target=\"_blank\" rel=\"noopener\">Bosch Rexroth official documentation<\/a> for factory standard baseline tolerances.<\/blockquote>\n<!-- Table of Contents -->\n<div style=\"background: #f1f3f5; padding: 18px 24px; border-radius: 6px; margin: 25px 0;\">\n<h4 style=\"margin-top: 0; margin-bottom: 10px;\">Quick Navigation \/ Table of Contents<\/h4>\n<ul style=\"margin-bottom: 0; padding-left: 20px;\">\n \t<li><a href=\"#quick-troubleshooting\">1. Quick A4VG Hydraulic Pump Troubleshooting Matrix<\/a><\/li>\n \t<li><a href=\"#diagnostic-guide\">2. In-Depth A4VG Hydraulic Pump Troubleshooting Workflows<\/a><\/li>\n \t<li><a href=\"#component-inspection\">3. Critical Components to Inspect<\/a><\/li>\n \t<li><a href=\"#spare-parts-matrix\">4. A4VG Spare Parts Selection Matrix (by Frame Size)<\/a><\/li>\n \t<li><a href=\"#repair-decision\">5. Repair Strategy: Seal Kit vs. Rotary Group<\/a><\/li>\n \t<li><a href=\"#faqs\">6. Frequently Asked Questions (FAQ)<\/a><\/li>\n<\/ul>\n<\/div>\n\n<hr \/>\n\n<!-- Section 1: Quick Reference Table (Focus Keyword in H2) -->\n<h2 id=\"quick-troubleshooting\">1. Quick A4VG Hydraulic Pump Troubleshooting Matrix<\/h2>\nUse this diagnostic reference matrix for fast <strong>A4VG hydraulic pump troubleshooting<\/strong> to correlate operating symptoms with potential root causes and recommended inspection procedures:\n<div style=\"overflow-x: auto;\">\n<table style=\"width: 100%; border-collapse: collapse; margin: 15px 0;\">\n<thead>\n<tr style=\"background-color: #2c3e50; color: #ffffff;\">\n<th style=\"padding: 10px; border: 1px solid #ddd; text-align: left;\">Symptom<\/th>\n<th style=\"padding: 10px; border: 1px solid #ddd; text-align: left;\">Probable Causes<\/th>\n<th style=\"padding: 10px; border: 1px solid #ddd; text-align: left;\">Recommended Action<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 8px; border: 1px solid #ddd;\"><strong>Low or No Output Pressure<\/strong><\/td>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">Internal leakage, worn cylinder block\/valve plate, defective control signal, insufficient charge pressure<\/td>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">Check charge pressure, measure case drain flow, inspect rotary group and control valve.<\/td>\n<\/tr>\n<tr style=\"background-color: #f9f9f9;\">\n<td style=\"padding: 8px; border: 1px solid #ddd;\"><strong>Excessive Case Drain Flow<\/strong><\/td>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">Worn cylinder block face, scored valve plate, excessive piston-to-bore clearance<\/td>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">Disassemble and inspect complete rotating group clearance and surface flatness.<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px; border: 1px solid #ddd;\"><strong>Excessive Noise \/ Cavitation<\/strong><\/td>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">Inlet line restriction, low charge pressure, aerated fluid, worn piston shoes<\/td>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">Inspect suction lines and filters; measure charge circuit stability; check piston shoe play.<\/td>\n<\/tr>\n<tr style=\"background-color: #f9f9f9;\">\n<td style=\"padding: 8px; border: 1px solid #ddd;\"><strong>System Overheating<\/strong><\/td>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">High internal slip\/leakage, fluid contamination, cooler restriction, mechanical friction<\/td>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">Monitor case drain temperature, verify oil cleanliness, inspect valve plate and cylinder block.<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px; border: 1px solid #ddd;\"><strong>Slow or Unstable Response<\/strong><\/td>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">Control valve contamination, servo piston seal wear, binding swash plate bearing<\/td>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">Clean control orifices, inspect pilot pressures, check swash plate movement and seals.<\/td>\n<\/tr>\n<tr style=\"background-color: #f9f9f9;\">\n<td style=\"padding: 8px; border: 1px solid #ddd;\"><strong>External Oil Leakage<\/strong><\/td>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">Hardened\/cut shaft seal, damaged housing O-rings, loose fitting joints<\/td>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">Replace complete shaft and housing seal kit; verify shaft surface condition.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n\n<hr \/>\n\n<!-- Section 2: In-Depth Diagnostic Workflows (Focus Keyword in H2) -->\n<h2 id=\"diagnostic-guide\">2. In-Depth A4VG Hydraulic Pump Troubleshooting Workflows<\/h2>\n<h3>A. Weak or Missing System Pressure<\/h3>\nLoss of pressure directly impacts hydrostatic drive performance. Perform <strong>A4VG hydraulic pump troubleshooting<\/strong> in a logical order before removing the pump:\n<ol>\n \t<li><strong>Check Charge Pressure:<\/strong> Ensure the auxiliary charge pump provides sufficient pressure to feed the closed loop and stroke the swash plate.<\/li>\n \t<li><strong>Measure Case Drain Flow:<\/strong> High case drain volume under load indicates fluid bypassing internal running surfaces.<\/li>\n \t<li><strong>Verify Control Input:<\/strong> Confirm hydraulic\/electric control signals properly actuate the stroke control valves.<\/li>\n \t<li><strong>Inspect Rotating Components:<\/strong> If external checks pass but pressure remains low, inspect the cylinder block face and valve plate for micro-scoring.<\/li>\n<\/ol>\n<h3>B. Cavitation and Noise Troubleshooting<\/h3>\nAbnormal hydraulic noise typically originates from fluid aeration or mechanical degradation:\n<ul>\n \t<li>Inspect suction strainers and inlet hoses for collapsing inner liners or loose clamps letting air in.<\/li>\n \t<li>Ensure oil viscosity matches operating ambient temperatures and oil level is topped up.<\/li>\n \t<li>Check piston shoe retaining margins; excessive shoe play against the swash plate causes rhythmic knocking.<\/li>\n<\/ul>\n<h3>C. Overheating and Thermal Runaway<\/h3>\nWhen hydraulic power converts into heat due to internal fluid slippage, effective <strong>A4VG hydraulic pump troubleshooting<\/strong> requires checking for fluid degradation:\n<ul>\n \t<li>Continuous leakage across worn metal surfaces generates localized high heat.<\/li>\n \t<li>Flush contaminated system fluid, replace return filters, and evaluate the full rotary group for wear.<\/li>\n<\/ul>\n\n<hr \/>\n\n<!-- Section 3: Component Inspection -->\n<h2 id=\"component-inspection\">3. Critical A4VG Components to Inspect During Repair<\/h2>\nA successful overhaul requires methodical evaluation of all precision mating parts identified during the <strong>A4VG hydraulic pump troubleshooting<\/strong> phase:\n<ul>\n \t<li><strong>Cylinder Block (Barrel):<\/strong> Check piston bore clearances and look for deep scratch marks or heat discoloration on the spherical end face.<\/li>\n \t<li><strong>Piston Shoe Assembly:<\/strong> Inspect shoe thickness, looseness on the ball head, and scratching on the contact surface that touches the swash plate.<\/li>\n \t<li><strong>Valve Plate:<\/strong> Examine running faces for cavitation erosion, radial scoring, or uneven friction wear between high-pressure ports.<\/li>\n \t<li><strong>Retainer Plate &amp; Ball Guide:<\/strong> Ensure flat, distortion-free holding of the piston shoes to prevent misalignment.<\/li>\n \t<li><strong>Swash Plate &amp; Cradle Bearings:<\/strong> Verify smooth swash movement without detents or pitting on the sliding bed.<\/li>\n \t<li><strong>Drive Shaft:<\/strong> Inspect spline teeth for step wear, keyway play, and radial grooves where the main lip seal contacts.<\/li>\n<\/ul>\n\n<hr \/>\n\n<!-- Section 4: Spare Parts Selection Matrix -->\n<h2 id=\"spare-parts-matrix\">4. A4VG Spare Parts Selection Matrix by Frame Size<\/h2>\nOnce <strong>A4VG hydraulic pump troubleshooting<\/strong> determines which parts have failed, use the structural matrix below to find suitable replacement components for your pump overhaul:\n<div style=\"overflow-x: auto;\">\n\n&nbsp;\n<table style=\"min-width: 700px; width: 100%; border-collapse: collapse; margin: 15px 0;\">\n<thead>\n<tr style=\"background-color: #0056b3; color: #ffffff;\">\n<th style=\"width: 20%; padding: 10px; border: 1px solid #ddd; text-align: left;\">Frame Size<\/th>\n<th style=\"width: 30%; padding: 10px; border: 1px solid #ddd; text-align: left;\">Rexroth A4VG Models Covered<\/th>\n<th style=\"width: 50%; padding: 10px; border: 1px solid #ddd; text-align: left;\">Available Spare Parts<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ddd;\"><strong>Small Frame<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\"><a href=\"https:\/\/seimtfluid.com\/product\/rexroth-a4vg28-spare-parts\/\">A4VG28<\/a>,\n<a href=\"https:\/\/seimtfluid.com\/product\/rexroth-a4vg40-spare-parts\/\">A4VG40<\/a>,\n<a href=\"https:\/\/seimtfluid.com\/product\/rexroth-a4vg56-spare-parts\/\">A4VG56<\/a>,\n<a href=\"https:\/\/seimtfluid.com\/product\/rexroth-a4vg71-spare-parts\/\">A4VG71<\/a>,\n<a href=\"https:\/\/seimtfluid.com\/product\/rexroth-a4vg90-spare-parts\/\">A4VG90<\/a><\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">Rotary Groups, Cylinder Blocks, Piston Shoe Sets, Valve Plates, Retainer Plates, Drive Shafts, Seal Kits<\/td>\n<\/tr>\n<tr style=\"background-color: #f9f9f9;\">\n<td style=\"padding: 10px; border: 1px solid #ddd;\"><strong>Medium Frame<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\"><a href=\"https:\/\/seimtfluid.com\/product\/rexroth-a4vg105-spare-parts\/\">A4VG105<\/a>,\n<a href=\"https:\/\/seimtfluid.com\/product\/rexroth-a4vg110-spare-parts\/\">A4VG110<\/a>,\n<a href=\"https:\/\/seimtfluid.com\/product\/rexroth-a4vg125-spare-parts\/\">A4VG125<\/a>,\n<a href=\"https:\/\/seimtfluid.com\/product\/rexroth-a4vg140-spare-parts\/\">A4VG140<\/a>,\n<a href=\"https:\/\/seimtfluid.com\/product\/rexroth-a4vg145-spare-parts\/\">A4VG145<\/a><\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">Rotary Groups, Cylinder Blocks, Valve Plates, Swash Plates, Bearings, Seal Kits<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ddd;\"><strong>Large Frame<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\"><a href=\"https:\/\/seimtfluid.com\/product\/rexroth-a4vg175-spare-parts\/\">A4VG175<\/a>,\n<a href=\"https:\/\/seimtfluid.com\/product\/rexroth-a4vg180-spare-parts\/\">A4VG180<\/a>,\n<a href=\"https:\/\/seimtfluid.com\/product\/rexroth-a4vg210-spare-parts\/\">A4VG210<\/a>,\n<a href=\"https:\/\/seimtfluid.com\/product\/rexroth-a4vg250-spare-parts\/\">A4VG250<\/a>,\n<a href=\"https:\/\/seimtfluid.com\/product\/rexroth-a4vg280-spare-parts\/\">A4VG280<\/a><\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">Complete Rotary Groups, Cylinder Blocks, Valve Plates, Swash Plates, Bearings, Repair Kits<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n\n<hr \/>\n\n<!-- Section 5: Repair Strategy -->\n<h2 id=\"repair-decision\">5. Repair Strategy: <a href=\"https:\/\/seimtfluid.com\/products\/seal-kits\/\">Seal Kit<\/a> vs. Complete Rotary Group<\/h2>\nChoosing the right maintenance scope minimizes downtime and avoids premature secondary failures:\n<div style=\"display: table; width: 100%; margin: 20px 0;\">\n<div style=\"display: table-cell; width: 48%; vertical-align: top; background: #eef9f1; padding: 18px; border-radius: 6px; border: 1px solid #c3e6cb;\">\n<h4 style=\"color: #155724; margin-top: 0;\">When to Replace Seal Kit Only:<\/h4>\n<ul style=\"margin-bottom: 0; padding-left: 18px;\">\n \t<li>External oil leaks around shaft seals or housing joint faces.<\/li>\n \t<li>Scheduled preventive maintenance interval.<\/li>\n \t<li>Metal running surfaces (block, valve plate, shoes) show zero scratching, erosion, or heat damage.<\/li>\n<\/ul>\n<\/div>\n<div style=\"display: table-cell; width: 4%;\"><\/div>\n<div style=\"display: table-cell; width: 48%; vertical-align: top; background: #fff3cd; padding: 18px; border-radius: 6px; border: 1px solid #ffeeba;\">\n<h4 style=\"color: #856404; margin-top: 0;\">When to Replace Complete Rotary Group:<\/h4>\n<ul style=\"margin-bottom: 0; padding-left: 18px;\">\n \t<li>Excessive case drain flow causing pressure loss.<\/li>\n \t<li>Contaminated fluid has scored cylinder block or valve plate.<\/li>\n \t<li>Piston shoes are worn loose or swash plate face is deeply grooved.<\/li>\n \t<li>Overhauling a high-hour pump to ensure long-term reliability.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n\n<hr \/>\n\n<!-- Section 6: FAQs -->\n<h2 id=\"faqs\">6. Frequently Asked Questions (FAQ)<\/h2>\n<div style=\"margin: 20px 0;\">\n<h4 style=\"margin-bottom: 5px; color: #0056b3;\">Q1: Should I replace just the seal kit or the entire A4VG rotary group?<\/h4>\n<p style=\"margin-top: 0;\">Replace only seals if your pump leaks externally but maintains full working pressure and shows no internal metallic wear. If the pump suffers from power loss, high temperatures, or elevated case drain flow, the rotary group requires full replacement.<\/p>\n\n<h4 style=\"margin-bottom: 5px; color: #0056b3;\">Q2: Can I order A4VG spare parts using only the pump displacement (e.g., A4VG90)?<\/h4>\n<p style=\"margin-top: 0;\">No. The displacement alone is insufficient. You must provide the full nameplate model code, series number, and rotation direction because valve plates, shafts, and control seals vary significantly by specification.<\/p>\n\n<h4 style=\"margin-bottom: 5px; color: #0056b3;\">Q3: What is the primary cause of excessive case drain flow in Rexroth A4VG pumps?<\/h4>\n<p style=\"margin-top: 0;\">Excessive drain flow is primarily caused by internal fluid slippage between worn rotating surfaces\u2014most commonly between the cylinder block face and the valve plate, or worn piston-to-cylinder clearances.<\/p>\n\n<\/div>\n\n<hr \/>\n\n<!-- Call To Action (Inquiry Box) -->\n<div style=\"background: #2c3e50; color: #ffffff; padding: 25px; border-radius: 6px; text-align: center; margin-top: 30px;\">\n<h3 style=\"color: #ffffff; margin-top: 0;\">Need Technical Assistance or A4VG Spare Parts?<\/h3>\n<p style=\"margin-bottom: 20px;\">Send us your complete pump nameplate photo or part codes. Our hydraulic engineers will confirm exact part fitment and provide a fast quotation.<\/p>\n<a style=\"background: #ff9900; color: #ffffff; padding: 12px 28px; text-decoration: none; font-weight: bold; border-radius: 4px; display: inline-block;\" href=\"https:\/\/seimtfluid.com\/contact\/\">Get A Quick Quote \/ Contact Us \u2192<\/a>\n\n<\/div>\n<\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Welcome to our comprehensive A4VG hydraulic pump troubleshooting and repair guide. The Bosch Rexroth A4VG is an axial piston variable displacement pump engineered for closed-circuit hydrostatic transmissions. Widely utilized in mobile machinery, construction equipment, and industrial applications, A4VG pumps deliver precise directional control and reliable variable hydraulic flow. Operating under demanding pressures and high-speed conditions, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2624","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"trp-custom-language-flag":false,"woocommerce_thumbnail":false,"woocommerce_single":false,"woocommerce_gallery_thumbnail":false},"uagb_author_info":{"display_name":"njhuchao@hotmail.com","author_link":"https:\/\/seimtfluid.com\/es\/author\/njhuchaohotmail-com\/"},"uagb_comment_info":0,"uagb_excerpt":"Welcome to our comprehensive A4VG hydraulic pump troubleshooting and repair guide. The Bosch Rexroth A4VG is an axial piston variable displacement pump engineered for closed-circuit hydrostatic transmissions. Widely utilized in mobile machinery, construction equipment, and industrial applications, A4VG pumps deliver precise directional control and reliable variable hydraulic flow. Operating under demanding pressures and high-speed conditions,&hellip;","_links":{"self":[{"href":"https:\/\/seimtfluid.com\/es\/wp-json\/wp\/v2\/posts\/2624","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/seimtfluid.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/seimtfluid.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/seimtfluid.com\/es\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/seimtfluid.com\/es\/wp-json\/wp\/v2\/comments?post=2624"}],"version-history":[{"count":32,"href":"https:\/\/seimtfluid.com\/es\/wp-json\/wp\/v2\/posts\/2624\/revisions"}],"predecessor-version":[{"id":4156,"href":"https:\/\/seimtfluid.com\/es\/wp-json\/wp\/v2\/posts\/2624\/revisions\/4156"}],"wp:attachment":[{"href":"https:\/\/seimtfluid.com\/es\/wp-json\/wp\/v2\/media?parent=2624"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/seimtfluid.com\/es\/wp-json\/wp\/v2\/categories?post=2624"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/seimtfluid.com\/es\/wp-json\/wp\/v2\/tags?post=2624"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}