Service Call CHAOS! 😳 Massey Fire + Dead 9R in the Woods | Harvest ’25 #7

ZK MasterTech β€’ October 25, 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

Thanks to BRUNT for sponsoring this video! Get $10 off your first purchase at https://brunt.yt.link/GdPPrnW using code ZKMASTERTECH. #zkmastertech #farmequipment #harvest2025 In this episode of Harvest ’25 Service Calls… 00:00 πŸš’ Fire Tease β€” Massey emergency! 00:34 🧠 John Deere 7930 β€” Camshaft position fault diagnosis 05:40 πŸ”§ 7930 β€” Twisted pair signal wire repair (EMI issue) 08:22 πŸ“‰ S780 β€” Feederhouse 5-speed clutch smoked (trans pressure low) 10:04 🌬️ 9570 STS β€” ECU 1180.00 charge air leak + 9570R low DEF dosing pressure 13:36 πŸ›‘ 9560R β€” Dead in the back 40 (injector harness unplugged) 19:29 ⚠️ Back to DEF on S780… then a Massey goes up in flames! πŸ”₯ 24:21 πŸ’Ί 8R 410 β€” Seat won’t air up (lower harness replacement) 26:44 ❄️ 9R 590 β€” High-side A/C line leaking (replacement) 31:11 πŸ’§ 9RX 640 + MT11 β€” Hydraulic lift cylinder leak 31:57 🌑️ 9570R β€” ECM 175.16 engine oil temp high (bad thermostat?) 34:09 🚫 9460R β€” Clogged fuel filters = low fuel pressure 37:28 🧊 9570R β€” Oil thermostat repair attempt (wrong part!) 44:57 🫁 9570R β€” DPF differential pressure issues under load πŸ”₯ And then the big one... While I'm working on DEF diagnostics, a Massey Ferguson tractor goes up in flames. We unload four fire extinguishers battling it until the fire department arrives. Not the kind of service call you expect β€” but we saved the tractor and the field. Stick around for a tease of the next nightmare: a potential blown head gasket or cracked head on a 9510R headed for the shop πŸ‘‡ As always β€” keep that green iron moving! πŸ’ͺ🌾

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