How to fix the panels that rust and the doors that quit, and the parts that do it, from 45 years of bending school bus steel.
A school bus mechanic walks through the seven things that actually matter when you're buying a used bus to convert. The rust zones, the frame items, and the trouble you can't spot on a test drive.
Read: The Skoolie Buyer's Guide: 7 Things to Inspect on a Used School Bus Before You Sign the Title
You pulled the interior paneling and found the rot. Here's how to decide between a patch and a full panel, the tools you really need, and where to source the parts.
Read: Rust Repair on a School Bus: A Skoolie's Guide to Fixing Lower Side Panels, Dog Houses, and Wheel Wells
Step wells rust out on every bus eventually. Here's how to tell if yours can be patched, how to choose between steel and aluminum, and what holds up to winter salt.
Read: How to Replace a School Bus Step Well: Steel vs. Aluminum, What Actually Holds Up, and When to Custom-Fab
A door that won't seal lets water into the step well and floor, and that's where the rust starts. Here's how to tell whether it's the rollers, hinges, latch, or the door itself, and the part that fixes each.
Read: School Bus Entrance Door Won't Close: How to Diagnose It and the Parts That Fix It
The battery box vents acid for years, so it rusts out before almost anything else, and takes the body wall behind it along with it. Here's how to replace it and stop the damage spreading.
Read: School Bus Battery Box Replacement: Why It Rots First and How to Replace It Right
The lower side panels are the biggest patch of rust-prone steel on the bus. Here's how they're built, how to choose between a patch and a full panel, and how to get one that matches the contour.
Read: Replacing School Bus Side Body Panels: Patch, Stock Panel, or Custom Fab?
Wheel wells rot from the lip inward, and the inner fender is usually worse than the part you can see. Here's the cutting pattern, why you do both at once, and where to get the panel.
Read: School Bus Wheel Well Repair: Cutting It Out and Welding In a Replacement
You pulled the seats and the plywood is a sponge. The real trouble is the steel underneath. Here's how to tell which cross members are salvageable, which need replacing, and where to get drop-ins.
Read: Rebuilding a School Bus Floor: Inspecting and Replacing Rusted Cross Members
Rub rails aren't just trim. They shield the body seams and hide the rust nobody checks. Here's how they work with the rear body and bumper brackets, and how to replace them.
Read: Rub Rails, Rear Body Panels, and Bumper Brackets: The Trim That Holds the Bus Together
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