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Cab corner rust area?

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Old Jun 13, 2023 | 05:25 PM
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Question Cab corner rust area?

What causes the lower rear corner of the cab to rust?
Is it just a driver's side issue or both sides?
Is it a major job to repair the problems?
Thanks.
 
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Old Jun 13, 2023 | 10:47 PM
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How about some pixs?
 
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Old Jun 14, 2023 | 06:12 AM
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Originally Posted by Truck Fun
What causes the lower rear corner of the cab to rust?
Is it just a driver's side issue or both sides?
Is it a major job to repair the problems?
Thanks.
Short answer is moisture causes it. Water/dirt/salt builds up on the inside of the cab corners where it can't be seen, sits there for years, causes bubble rust from the inside out. Common on both corners and most trucks, not specific to Ford.

It's not exactly a major job to repair, but you have to know what you're doing with sheet metal welding/finishing. Plenty of companies sell JUST the cab corners to weld in replacements.
 
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Old Jun 14, 2023 | 08:21 AM
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Here's a pic.
 
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Old Jun 15, 2023 | 06:17 AM
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Yep, that's common cab corner rust, though not too bad yet. If you know how to weld thin sheet metal and are decent with paint, it's a job you can handle yourself. If you're not experienced with welding, well, personally it's not something I'd want 'a buddy with a welder' to do, I'd want someone who knows what they're doing to do it. But parts are available.
 
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Old Jun 15, 2023 | 08:59 AM
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I definitely would need to have the welding done by someone. Will keep it on my list of things to do on the truck.
 
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Old Jun 15, 2023 | 12:26 PM
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Leaky rear windows and high-mounted stop lights can contribute to water ending up in this area. I have seen many cab corners that are packed inside with dirt and dust, which helps hold the water in and promote rust. Drowning the area in grease (after repair and paint) would seem wise.
 
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Old Jun 16, 2023 | 05:18 PM
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It's a common issue on all 3 major manufacturer's trucks. I believe that it's because of the path of water as it's slung from the front tires. It hits that area constantly, also carrying road debris, stones/gravel, dirt, and chemicals.
 
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Old Jun 17, 2023 | 11:58 AM
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A good set of cab steps or running boards will preserve the outside finish.
 
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Old Jun 17, 2023 | 03:51 PM
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Originally Posted by super 6.8
A good set of cab steps or running boards will preserve the outside finish.
It has the Ford boards that were on the truck from the beginning. Just added Duraflaps up front to help with that area; did some sanding/painting/clearcoat before installing to hopefully improve some surface issues between the lower fenders and the door. However, the cab corner is beyond what I can do if it involves any metal work. May check with local body shop next week.
 
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