8RX 410 track, 9360R Radiator, X9 Issues & S780 Electrical Gremlins | Harvest 2025 Service Calls 4

ZK MasterTech October 4, 2025
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ZK MasterTech

@zkmastertech

About

Welcome to the ZK MasterTech! See what it's like to dive into the world of a Master John Deere Ag Technician, Zeth Key. A 2007 Automotive Graduate of Wyotech in Laramie, WY and 2023 WyoTech Hall of Fame Inductee now finds himself working on John Deere diesel tractors and combines in the farm lands of central Illinois. Working for Sloan Implement in Atwood, IL for over a decade, Zeth has seen just about every failure your John Deere equipment can have. Subscribe to ZK MasterTech to see what it's like to repair some of the most advanced farm machinery you can buy! Being a John Deere technician is one of the most rewarding and challenging careers you can get into. Just like the whole industry, companies in AG have a hard time finding talented, experienced people. Hopefully this channel will show the world the technical side of agriculture and what it takes to keep the farmers going and to inspire a younger generation to pick up a wrench a start a great career with Sloan Implement!

Video Description

In Harvest 2025 Service Calls 4, it’s another packed round of field and shop repairs during one of the busiest times of the year. The day kicks off with a John Deere S660 throwing a fuel dosing inlet pressure fault. Then it’s on to a 9360R with a leaking radiator and an X9 1100 with a bad unloading auger latch assembly. Next up, an S780 in the field develops strange electrical issues traced to bad grounds and a software glitch. An S680 rolls in with a shredded chopper jackshaft belt, a leaking grain saver door, and a PowerCast tailboard that’s not spreading wide enough. Even my service truck gives me trouble when a dead battery shuts me down mid-day — but a quick battery replacement gets me back to work. Back at the shop, I take on an 8RX 410 with a bad front track, requiring a new track and idler rotation. Then it’s time for the big job — swapping the 9360R radiator, where my Stellar T-Max service truck and crane prove their worth. The episode wraps up with an S780 needing a separator clutch and transmission, and an X9 1000 that keeps randomly dying in the field with no clear cause… yet. Another long round of real-world repairs and diagnostics to keep that green iron moving. Want to see the best of ZK MasterTech? Check out my top repair and service videos here: https://youtube.com/playlist?list=PLhGcsfw6sbwx66pEkZpqLd_SF8jASNMgY&si=1aomfCy5TJ8d19kf Follow me on TikTok! the_zk_mastertech https://www.tiktok.com/@the_zk_mastertech?is_from_webapp=1&sender_device=pc Follow me on Instagram @zk_mastertech Want some ZK merch? https://zk-mastertech.myspreadshop.com/ Check out my Amazon store front! https://www.amazon.com/shop/zkmastertech Want a career with Sloan Implement? https://www.sloans.com/career Thanks to Sloan Implement and John Deere for their continued support. Subscribe for more in-depth diagnostics and field fixes. And as always — keep that green iron moving!

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