What Failed Inside This John Deere 9RX 640 transmission?

Spring 2026 Service Calls — Episode 4. We’ve been rained out this week, so no service calls… but that doesn’t mean the shop slows down. In this one, we finally tear into the John Deere 9RX 640 transmission and see the damage we’ve been waiting on. I go through it with Paul and we break down what failed and what we’re dealing with. Ben rolls in a brand new John Deere 412R sprayer getting ready for delivery, and we go over the tech and what goes into a full pre-delivery inspection. I’ve also got an X9 1100 in the shop that needs a full inspection before it hits the field, plus updates on storm-damaged machines, some new tools, and a look at Ian's new service truck, a new Chevy 6500 with a Knapheide crane body. No service calls… but plenty of work getting this green iron ready to run. 00:00 Intro 00:00:14 9RX 640 transmission damage 00:06:58 JD 412R sprayer 00:15:25 X9 1100 shop project 00:19:22 9360R update 00:20:06 Milwaukee M18 handheld vacuum 00:24:17 Shop Dog CBX - X9 1100 00:25:31 9530T update 00:26:04 9RX 640 transmission repair 00:28:13 Side quest! 2 hr drive for 3 wires… 00:28:33 X9 1100 is in the shop - inspection time! 00:28:59 9RX 640 transmission repair 00:30:27 Ian’s new service truck! 2025 Chevy 6500 Knapheide crane body 00:37:41 Outro Shop Dog CBX Turning Tool: https://shopdogindustries.com/ Milwaukee M18 Handheld Vacuum: https://www.acmetools.com/milwaukee-m... Want to see the best of ZK MasterTech? Check out my top repair and service videos here:    • Best of ZK MasterTech!   Follow me on TikTok! official_zkmastertech   / official_zkmastertech   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! #milwaukeetools #nothingbutheavyduty