{"product_id":"comnav-rudder-follower-rebuild-kit-20330009","title":"ComNav Rudder Follower Rebuild Kit for Medium Duty Rotary Feedback","description":"\u003cp class=\"nvn-hero\"\u003eThe ComNav Rudder Follower Rebuild Kit restores your Medium Duty Rotary Rudder Feedback instead of replacing the whole unit. It carries the internal wear parts for ComNav feedback part numbers 20330007 and 20330008, so a pilot that's started hunting or throwing rudder alarms can read true again. Rebuild it, recalibrate, and get back to a dead-straight autopilot line.\u003c\/p\u003e\n\n\u003cdiv class=\"nvn-description\"\u003e\n\u003cp\u003eThe ComNav Rudder Follower Rebuild Kit brings your Medium Duty Rotary Rudder Feedback back to life instead of forcing a full unit replacement. It's the service kit for ComNav's medium duty rotary feedback, part numbers 20330007 and 20330008, and it carries the internal parts that wear out first. If your autopilot has started hunting, drifting off course, or throwing rudder feedback alarms, a worn feedback sensor is one of the usual suspects, and this kit is the fix.\u003c\/p\u003e\n\u003cp\u003eHere's what's going on inside that little box on your rudderpost. The rotary feedback unit reports rudder angle back to the autopilot computer dozens of times a second. Over four to six seasons of steering, the internal wiper that reads that angle wears a groove into its track. You don't usually notice the exact day it goes. What you notice is the boat wandering a few degrees either side of your heading, or the pilot working harder than it used to, or an alarm that wasn't there last year. Rebuilding restores clean, linear rudder readings so the pilot knows exactly where the rudder is pointed.\u003c\/p\u003e\n\u003cp\u003eThis is a rebuild kit, not a complete feedback assembly, and it does not include the linkage. If your rudderpost arm and connecting rod are still straight and tight, that's fine, you reuse them. If the linkage itself is bent or sloppy, you'll want to sort that out separately before you button everything back up. The kit covers the parts inside the housing that actually take the wear.\u003c\/p\u003e\n\u003cp\u003eA few things worth knowing before you crack it open. Mark the original position of the feedback arm before you take anything apart. That single reference mark saves you a lot of guesswork when it's time to set the center point again. Once it's reassembled, turn the wheel or tiller lock to lock by hand and watch that the arm swings freely through its full travel without binding. Binding at the ends is the fastest way to get an autopilot alarm the first time you engage the pilot.\u003c\/p\u003e\n\u003cp\u003eSaltwater boats, pay attention to sealing. The feedback lives low and often damp, and the number one reason a freshly rebuilt unit fails early is water ingress during reassembly. Keep the vent hole covered while you're working, seat the O-rings clean and lightly greased, and don't rush the housing back together. Do it right once and this unit will read true for years.\u003c\/p\u003e\n\u003cp\u003eWhen everything's back together and wired, run the rudder feedback test in your ComNav autopilot's setup menu before you head out. That calibration step teaches the pilot the new center and end stops, and it catches any offset error while you're still at the dock instead of a mile offshore. It takes two minutes and it's the difference between a pilot that holds a dead-straight line and one that hunts.\u003c\/p\u003e\n\u003cp\u003eRebuilding also just makes sense on the wallet. A complete rotary feedback assembly costs well more than the service kit, and most of that cost is a housing and linkage that are usually still perfectly good. Swapping the wear parts gets you back to factory performance for a fraction of the price, and it keeps you from having to re-drill mounts or re-route cable. The ComNav rotary feedback is a proven design built to take a very high number of rudder movements over its life, so a rebuild genuinely resets the clock rather than just buying you a season.\u003c\/p\u003e\n\u003cp\u003eWho's this for? Any boater running a ComNav autopilot with the medium duty rotary rudder feedback who's seeing degraded steering and would rather rebuild than replace. It's a common fix on displacement cruisers, sailboats, and workboats where the feedback has simply put in its miles. If you're not sure whether your feedback is the medium duty rotary version, check the part number on the unit against 20330007 or 20330008 before you order. And when the kit arrives, take two minutes to lay the parts out against the exploded diagram in your ComNav manual so you know exactly what goes where.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul class=\"nvn-features\"\u003e\n  \u003cli\u003eMedium duty rebuild kit for ComNav rotary rudder feedback 20330007 and 20330008, the same internal parts used to service the unit\u003c\/li\u003e\n  \u003cli\u003eReplaces the wear parts that cause autopilot hunting and rudder-angle drift after several seasons of steering\u003c\/li\u003e\n  \u003cli\u003eRestores clean, linear rudder-angle readings so the autopilot knows exactly where the rudder is pointed\u003c\/li\u003e\n  \u003cli\u003eDoes not include the linkage, so you keep your existing rudderpost arm and connecting rod if they're still straight\u003c\/li\u003e\n  \u003cli\u003eRebuild instead of replacing the whole feedback assembly, saving the cost of a housing and linkage that are usually still good\u003c\/li\u003e\n  \u003cli\u003eWorks with ComNav autopilot systems running the medium duty rotary rudder feedback\u003c\/li\u003e\n  \u003cli\u003eManufacturer part number 20330009, ships new with a one-year manufacturer warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"nvn-trust\"\u003e\n  \u003ch2\u003eWhy Buy from NVN Marine\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eAuthorized ComNav Marine reseller, full manufacturer warranty\u003c\/li\u003e\n    \u003cli\u003eNMEA member and ABYC certified, advice from real boat techs\u003c\/li\u003e\n    \u003cli\u003eSame-day shipping before 3 PM ET on in-stock items\u003c\/li\u003e\n    \u003cli\u003eNY headquarters and Fort Lauderdale flagship retail store\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"nvn-faq\"\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat does the ComNav Rudder Follower Rebuild Kit do?\u003c\/summary\u003e\n    \u003cp\u003eIt replaces the internal wear parts inside the ComNav Medium Duty Rotary Rudder Feedback, part numbers 20330007 and 20330008. Over several seasons the sensor that reads rudder angle wears out, and that shows up as autopilot hunting or rudder alarms. The kit restores clean, linear rudder readings so the pilot holds a straight line again.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhich ComNav feedback units does this kit fit?\u003c\/summary\u003e\n    \u003cp\u003eIt's made for the Medium Duty Rotary Rudder Feedback, ComNav part numbers 20330007 and 20330008. Check the number stamped on your feedback unit against those before ordering so you know you've got the medium duty rotary version.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDoes the kit include the linkage?\u003c\/summary\u003e\n    \u003cp\u003eNo. This is a rebuild kit for the parts inside the housing, not a complete assembly, and it does not include the linkage. If your rudderpost arm and connecting rod are straight and tight you reuse them. If the linkage is bent or worn, sort that out separately.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow do I know my rudder feedback needs rebuilding?\u003c\/summary\u003e\n    \u003cp\u003eThe usual signs are the boat wandering a few degrees either side of your heading, the autopilot working harder than it used to, or a rudder feedback alarm that wasn't there before. A worn feedback sensor is a common cause, and rebuilding it is often the fix.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDo I need to recalibrate after installing the kit?\u003c\/summary\u003e\n    \u003cp\u003eYes. After reassembly and wiring, run the rudder feedback test in your ComNav autopilot's setup menu. That teaches the pilot the new center point and end stops and catches any offset error while you're still at the dock.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eAny tips for a clean rebuild?\u003c\/summary\u003e\n    \u003cp\u003eMark the original position of the feedback arm before you take it apart so you can set the center again easily. Turn the helm lock to lock by hand afterward to confirm the arm swings freely without binding. And on saltwater boats, keep the vent hole covered and seat the O-rings clean and lightly greased to keep water out.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs it cheaper to rebuild than replace the whole unit?\u003c\/summary\u003e\n    \u003cp\u003eUsually, yes. A complete rotary feedback assembly costs well more than the service kit, and most of that cost is the housing and linkage that are typically still good. Rebuilding the wear parts brings the unit back to factory performance for a fraction of the price.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat's the part number and is it covered by warranty?\u003c\/summary\u003e\n    \u003cp\u003eThe manufacturer part number is 20330009 and it carries a one-year manufacturer warranty. It ships new and factory sealed.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable class=\"nvn-specs\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003cth\u003eTitle\u003c\/th\u003e\n\u003ctd\u003eComNav Rudder Follower Rebuild Kit for Medium Duty Rotary Feedback\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eComNav Marine\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eManufacturer Part Number\u003c\/th\u003e\n\u003ctd\u003e20330009\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eUPC\u003c\/th\u003e\n\u003ctd\u003e013292096262\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003eRudder Follower Rebuild Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eDuty Class\u003c\/th\u003e\n\u003ctd\u003eMedium Duty\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eFeedback Type\u003c\/th\u003e\n\u003ctd\u003eRotary\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eCompatible Feedback Units\u003c\/th\u003e\n\u003ctd\u003e20330007 and 20330008\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eLinkage Included\u003c\/th\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003ctd\u003eComNav autopilot rudder position feedback\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eCondition\u003c\/th\u003e\n\u003ctd\u003eNew\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd\u003eOne Year Manufacturer Warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eList Price\u003c\/th\u003e\n\u003ctd\u003e$236.25\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n    \"@context\": \"https:\/\/schema.org\",\n    \"@type\": \"FAQPage\",\n    \"mainEntity\": [\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What does the ComNav Rudder Follower Rebuild Kit do?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It replaces the internal wear parts inside the ComNav Medium Duty Rotary Rudder Feedback, part numbers 20330007 and 20330008. Over several seasons the sensor that reads rudder angle wears out, and that shows up as autopilot hunting or rudder alarms. The kit restores clean, linear rudder readings so the pilot holds a straight line again.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Which ComNav feedback units does this kit fit?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's made for the Medium Duty Rotary Rudder Feedback, ComNav part numbers 20330007 and 20330008. Check the number stamped on your feedback unit against those before ordering so you know you've got the medium duty rotary version.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Does the kit include the linkage?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"No. This is a rebuild kit for the parts inside the housing, not a complete assembly, and it does not include the linkage. If your rudderpost arm and connecting rod are straight and tight you reuse them. If the linkage is bent or worn, sort that out separately.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How do I know my rudder feedback needs rebuilding?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"The usual signs are the boat wandering a few degrees either side of your heading, the autopilot working harder than it used to, or a rudder feedback alarm that wasn't there before. A worn feedback sensor is a common cause, and rebuilding it is often the fix.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Do I need to recalibrate after installing the kit?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes. After reassembly and wiring, run the rudder feedback test in your ComNav autopilot's setup menu. That teaches the pilot the new center point and end stops and catches any offset error while you're still at the dock.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Any tips for a clean rebuild?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Mark the original position of the feedback arm before you take it apart so you can set the center again easily. Turn the helm lock to lock by hand afterward to confirm the arm swings freely without binding. And on saltwater boats, keep the vent hole covered and seat the O-rings clean and lightly greased to keep water out.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Is it cheaper to rebuild than replace the whole unit?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Usually, yes. A complete rotary feedback assembly costs well more than the service kit, and most of that cost is the housing and linkage that are typically still good. Rebuilding the wear parts brings the unit back to factory performance for a fraction of the price.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What's the part number and is it covered by warranty?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"The manufacturer part number is 20330009 and it carries a one-year manufacturer warranty. It ships new and factory sealed.\"\n            }\n        }\n    ]\n}\n\u003c\/script\u003e\n","brand":"ComNav Marine","offers":[{"title":"Default Title","offer_id":45000677883997,"sku":"2007972","price":206.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0299\/7266\/0317\/files\/ImageServerAPI_452d4c56-7d38-4da9-939d-f95132a66ff6.png?v=1788749798","url":"https:\/\/nvnmarine.com\/products\/comnav-rudder-follower-rebuild-kit-20330009","provider":"NVN Marine","version":"1.0","type":"link"}