John Deere 450B Dozer Troubleshooting: Common Problems & Solutions

Thinking about buying a vintage crawler or keeping yours running? In this video, I take a close look at my John Deere 450B dozer—reviewing its condition, inspecting the undercarriage, and working through common mechanical and fluid-related issues. From hidden hydraulic leaks to moisture contamination, I cover what it takes to maintain a 50-year-old piece of yellow iron. My goal is to share the causes and fixes I’ve found so you can troubleshoot your own machine. What we cover in today’s episode is shown in the chapters below. Whether you own a JD 450, 450A, or 450B, these older machines are still highly capable, but they need steady care to stay on the tracks. If this overview or any of the fixes helped, please hit LIKE and SUBSCRIBE for more farm equipment repair content. Have you run into similar issues on your machine? Leave a comment below. #JohnDeere450B #UsedDozer #HeavyEquipmentRepair #VintageDeere Chapters 00:00 Introduction 00:33 Undercarriage work 01:36 Condensation on dipstick 03:24 Water contamination in the winch oil 04:22 Changing winch oil and filter 05:24 Steering issue 08:00 Hydraulic leak on hardline 09:58 HLR Pressure Issue 11:39 Clutch operation and adjustment 15:45 Trying to optimize HLR pressure to prevent overheating 19:35 Fuel shutoff solenoid 20:37 Conclusion