{"id":52068,"date":"2025-06-16T19:58:00","date_gmt":"2025-06-16T19:58:00","guid":{"rendered":"https:\/\/ncservo.com\/?post_type=product&#038;p=52068"},"modified":"2026-03-31T18:56:17","modified_gmt":"2026-03-31T18:56:17","slug":"moog-77128","status":"publish","type":"product","link":"https:\/\/ncservo.com\/.wp-toolkit_m\/product\/moog-77128\/","title":{"rendered":"MOOG 77-128"},"content":{"rendered":"<div id=\"wb-what-we-do\" class=\"wordbank-container\">\n<h2>Teardown and Rebuild Steps<\/h2>\n<p>Our repair process for the MOOG 77-128 begins with teardown and mineral bath and ultrasonic cleaning to assess all components.<\/p>\n<\/div>\n<div id=\"wb-why-us\" class=\"wordbank-container\">\n<h2>About Our Shop<\/h2>\n<p>Unlike OEM shops, we use our own inventory to handle most rebuilds. That cuts down on lead time and gets your unit back faster.<\/p>\n<p>17,000+ valves in stock including MOOG 77-128 exchange units<\/p>\n<\/div>\n<div id=\"wb-faq\" class=\"wordbank-container\">\n<h2>Frequently Asked Questions<\/h2>\n<div class=\"faq-accordion\">\n<div class=\"faq-item\">\n<h3><button aria-expanded=\"true\" aria-controls=\"faq-content-0\">Is there a warranty on repairs?<\/button><\/h3>\n<div id=\"faq-content-0\" class=\"faq-content\">\n<p>All repairs come with a 12-month warranty on parts and labor. Contact us for specifics on your unit.<\/p>\n<\/div><\/div>\n<div class=\"faq-item\">\n<h3><button aria-expanded=\"true\" aria-controls=\"faq-content-1\">Will I be contacted if the unit is beyond repair?<\/button><\/h3>\n<div id=\"faq-content-1\" class=\"faq-content\">\n<p>You&#8217;ll hear from us either way. If it&#8217;s not repairable, we&#8217;ll return the unit and provide our findings.<\/p>\n<\/div><\/div>\n<div class=\"faq-item\">\n<h3><button aria-expanded=\"true\" aria-controls=\"faq-content-2\">Is it helpful if I include photos before sending the unit in?<\/button><\/h3>\n<div id=\"faq-content-2\" class=\"faq-content\">\n<p>We recommend sending pictures, especially if the model number is unclear or there is visible damage.<\/p>\n<\/div><\/div>\n<div class=\"faq-item\">\n<h3><button aria-expanded=\"true\" aria-controls=\"faq-content-3\">How quickly can you return a repaired unit?<\/button><\/h3>\n<div id=\"faq-content-3\" class=\"faq-content\">\n<p>It depends on the unit and scope of work. We provide an estimated timeline after initial evaluation.<\/p>\n<\/div><\/div>\n<div class=\"faq-item\">\n<h3><button aria-expanded=\"true\" aria-controls=\"faq-content-4\">Can I request rush service on a repair?<\/button><\/h3>\n<div id=\"faq-content-4\" class=\"faq-content\">\n<p>Yes, rush service is available for an additional fee. Let us know your deadline when you submit your request.<\/p>\n<\/div><\/div>\n<\/p><\/div>\n<\/div>\n<div id=\"wb-process\" class=\"wordbank-container\">\n<h2>Repair Process<\/h2>\n<p>Once a valve arrives, we tear it down fully, examine key surfaces, and replace worn or damaged parts using components we stock in-house, cutting out OEM lead times.<\/p>\n<ul>\n<li>Final Performance Verification: After reassembly, each valve is bench-tested against published performance specifications.<\/li>\n<li>Seal and Gasket Replacement: Worn seals and gaskets are replaced with new components during every rebuild.<\/li>\n<li>Cleaning: Units go through a mineral bath, with ultrasonic cleaning used for delicate internals.<\/li>\n<li>Leak and Pressure Testing: The reassembled unit is leak-tested and pressure-tested to verify it meets published specs.<\/li>\n<\/ul>\n<\/div>\n<div id=\"wb-testing\" class=\"wordbank-container\">\n<h2>Leak and Performance Testing<\/h2>\n<p>NC Servo operates thirteen in-house test stands, including setups for proportional and servo valves. Every valve goes through performance and leak testing using industry-standard fluids including MIL-5606 and Skydrol. Our functional testing verifies consistent performance.<\/p>\n<\/div>\n<div id=\"wb-tech-overview\" class=\"wordbank-container new-dynamic-section\">\n<h2>MOOG 77-128 Specifications<\/h2>\n<p>Every MOOG 77-128 we service is tested under real-world conditions. Our diagnostics verify performance against published specifications. Technical diagrams and Performance data are available for purchase upon request.<\/p>\n<\/div>\n<div id=\"wb-service-offerings\" class=\"wordbank-container new-dynamic-section\">\n<h2>Repair, Rebuild and Exchange Options<\/h2>\n<p>Beyond standard sales, we offer specialized repairs for your MOOG 77-128 unit. Our teardown process includes leak testing and bench testing, using only new replacement components.<\/p>\n<\/div>\n<div id=\"wb-tips\" class=\"wordbank-container\">\n<h2>Maintenance Tips<\/h2>\n<ul>\n<li>Perform fluid analysis to detect contamination early and prevent system damage.<\/li>\n<li>Store spare MOOG 77-128 valves in a clean, dry environment to prevent corrosion and contamination.<\/li>\n<li>Check system pressure regularly to verify it stays within the MOOG 77-128 rated operating range.<\/li>\n<\/ul>\n<\/div>\n<div id=\"wb-cta\" class=\"wordbank-container\">\n<div class=\"cta-section\">\n<h2>Need Your MOOG 77-128 Back Online?<\/h2>\n<p>Request pricing, availability, and turnaround for your MOOG 77-128. NC Servo provides independent repair with a 1-year warranty. Contact us to schedule your repair.<\/p>\n<div class=\"cta-buttons\"><a href=\"https:\/\/ncservo.com\/.wp-toolkit_m\/contact-us\/\" class=\"button quote-button\">Request a Quote<\/a> <a href=\"https:\/\/ncservo.com\/.wp-toolkit_m\/moog\/\" class=\"button brand-button\">View All MOOG Products<\/a> <a href=\"https:\/\/ncservo.com\/.wp-toolkit_m\/brand\/moog\/\" class=\"button inventory-button\">Shop MOOG Inventory<\/a><\/div>\n<\/div>\n<\/div>\n<div class=\"disclaimer-section\">\n<p class=\"disclaimer\"><strong>NC Servo<\/strong> is an independent third-party repair facility. We are not affiliated with, endorsed by, sponsored by, or authorized by MOOG or any original equipment manufacturer (OEM), nor do we claim to be a MOOG service center. All brand names, trademarks, model numbers, and part numbers referenced on this page are the property of their respective owners and are used solely for identification and compatibility purposes.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<div id=\"wb-short-description\" class=\"short-description-container\">\n<p>When your MOOG 77-128 valve fails, production stops. limited stock. NC Servo Tech offers expert repair services.<\/p>\n<\/div>\n","protected":false},"featured_media":58052,"template":"","meta":[],"product_brand":[494],"product_cat":[139],"product_tag":[152],"class_list":{"0":"post-52068","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_brand-moog","7":"product_cat-moog","8":"product_tag-valve","10":"first","11":"instock","12":"shipping-taxable","13":"product-type-simple"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>MOOG 77-128 Hydraulic Valve Repair Service<\/title>\n<meta name=\"description\" content=\"NC Servo repairs your tested, cost-effective hydraulic valve repair for your MOOG 77-128. 1-year warranty on parts and labor. 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