What the Auction Missed on This Dead 700J Dozer

We picked up a dead John Deere 700J dozer at auction — the kind you know has a story behind it. It ran, but it wouldn’t move. Someone had been in it before us, parts were thrown together, valves were backed off, and something critical was missed. In this video, we tear into the pumps, PCP valves, electronics, calibration, and fuel system to track down why this 10,000-hour 700J refused to drive — and what it actually needed to get back to work.

If you like real shop diagnostics, auction equipment repairs, and fixing machines everyone else gave up on, you’re in the right place.

Time Range,Description
0:00-3:50 Intro/Initial Working Shots & Teaser
3:50-4:39 Welcome: The Broken Auction Buy & Backstory on the 700J
4:39-6:26 First Step: Getting the Winch Out of the Way (Prep for Diagnostics)
6:26-8:00 Diagnostics Start: Finding the Same Loose Valves and PCP Issues
8:00-9:53 Starting the Dozer: Pumps are Angry! The Engine is Loading Up
9:53-13:30 Attempting to Relieve Pressure and Adjust Valves to Neutral
13:30-15:24 Right Track Fixed! But the Left PCP is Broken. Time for the Differential Pressure Test
15:24-17:40 Adjusting the PCP using the Homemade Gauge Setup
17:40-21:32 Swapping the Broken PCP Valve with a Used Replacement
21:32-24:02 Pumps Working! Now for the Transmission Controller Calibration (Error Code F3H9)
24:02-25:47 Troubleshooting the Neutral Switch & Resistor Issues
25:47-28:40 The Hack: Swapping a Calibrated Transmission Controller to Bypass Wacky Electronics
28:40-31:28 Final Checks: Draining Filters and Checking Final Drives (No Metal!)
31:28-33:50 Pre-Test Drive: Backing the Dozer Out of the Shop
33:50-37:30 Troubleshooting Power Loss: Finding the Wrong Fuel Filter Installed!
37:30-40:00 Getting it Fired Up with the Correct Fuel Filters
40:00-45:30 BOG HOG TEST DRIVE! Pushing Dirt and Breaking the RC Car (The Price of Fun)
45:30-47:24 Final Thoughts on the 700J Repair & Next Steps
47:24-51:39 BONUS CLIP: The 3-Hour Dukes of Hazzard Ranchero Paint Job!

#JohnDeere
#HeavyEquipmentRepair
#Bulldozer
#Hydrostatic