Sailors Maintaining Our Own Yanmar 4JH4-TE Diesel | Reassembly Episode 55 #yanmarmaintenance

There is no AAA in the middle of the ocean, so ensuring that our engines are in the best shape possible is a priority. This extended video is a step-by-step reassembly of one of our Yanmar 4JH4-TE marine diesel engines. In this video we clean and service critical components like seals, valves, oil cooler, injectors, and motor mounts. This process will help extend the life of our Yanmar engines, improve fuel efficiency, and ensure reliability. LInks: Clamptite: https://clamptitetools.com/?sid=syroam 10% off code: Gerischaffer10 Engine mounts: Oceanic Innovations: https://oceanicinnovations.store/ ☝More about us, our adventures, and how we do all this on our website. More about Roam here ⛵️https://sailingroam.com/our-sailboat/ 📲 Keep up with us on social FACEBOOK: https://facebook.com/sgsailingroam INSTAGRAM: https://instagram.com/sailing_roam ----------------------------------------------------------- WE'RE GERI AND SHAWN. A couple travelers out chasing the horizon, meeting the people, and capturing it to share with you. We’ve chosen to Roam the world by boat because, let’s face it, the most interesting path is rarely a straight line. As we learn to let go of our American drive to finish, and embrace the meandering routes across islands, oceans, continents, and people, we hope to gain a better sense of our world and our place in it. The path won’t always be comfortable or easy to find but, it will always #roam Here's an index of the video in case you want to see something specific: 00:00 Teaser clips 00:15 Intro to Sailing Roam 00:31 Intro to reassembly 00:55 Clean up 04:12 Oil cooler and automatic cold start device (ACSD) 06:29 Remove bonnet (valve cover) 06:49 Remove front main seal 08:28 Valve adjustment 09:37 Wiring harness 11:10 Dipstick 11:38 Motor Mount 13:04 Oil cooler 13:22 Inlet hose 13:51 Steering cable bracket 14:38 Vacuum booster hose 15:12 Water pump 17:14 Bonnet 20:02 Valve seals 20:31 Water circulating pump 21:29 Thermostat 23:25 Front main seal 25:55 Crank pulley 26:32 Heat exchanger/turbo 27:34 Mostly little things left 29:49 Chase the threads 30:26 Connect turbo to intake manifold 31:30 Clamptite 33:06 Mixing elbow 34:40 Air Cleaner 35:50 Motor mounts 37:12 Remove flywheel and vibration dampener/clean 38:46 Rear main seal 40:22 Replace flywheel/vibration dampener/fan 40:58 Wrap up 41:07 Like, Subscribe, See you next time 41:28 End card ----------------------------------------------------------- #Yanmar #MarineDiesel #BoatMaintenance #DieselEngine #YanmarEngine #MarineRepair #BoatLife #liveaboardlife #cruisinglife © Sailing Roam 2025