This Dozer Kept Throwing Tracks

We’ve got another broken logger dozer in the shop — and this one had everyone scratching their heads. This machine had new undercarriage, yet it kept walking tracks and jumping off under load. After leveling the tractor and checking alignment, we discovered the real issue wasn’t the rails or pads at all — it was buried deep in the pivot shaft and bushings. In this video, we: * Diagnose track misalignment using basic leveling checks * Tear down the track frame and equalizer bar * Find completely worn-out bushings and damage from years of logging work * Cut, weld, machine, and repair pivot shafts instead of replacing $7–8K parts * Explain why new undercarriage can expose problems old undercarriage hides If you run older dozers, logging equipment, or machines with pivoting track frames, this is a problem you’ll want to understand before throwing tracks again. CHAPTERS / TIMESTAMPS 0:00 – Dozer keeps throwing tracks (even with new undercarriage)2:10 – Initial inspection & alignment concerns5:30 – Leveling the tractor and measuring track frame lean9:15 – Identifying pivot shaft & bushing movement13:40 – Tracks coming apart & confirming excessive play18:20 – Removing guards, pins, and track frames25:10 – Bushings completely gone & oil contamination31:30 – Pivot shaft condition & cost of replacement parts36:45 – Decision to repair vs replace41:20 – Lathe setup & measuring shaft runout48:10 – Machining and correcting a bent pivot shaft55:30 – Turning and welding worn shaft surfaces1:02:10 – Why new undercarriage exposes hidden problems1:06:30 – Wrap-up and next steps