Ford: Front Brakes, whole scenario, caliper

Question
F350 Truck 4x4 Driver side front brake locksup when backing up.

Answer
Hi Phil.  Send more information as far the whole scenario with this situation.  The only thing I have ever known to cause the brakes to lock up is a bad caliper on the wheel that is locking up.  This sounds pretty weird and though I have never seen his issue before, a caliper is the only thing I can think of to cause this issue. Do you see any fluid leaking on that side of truck?  There may be a leak and the fluid is getting slung all in the wheel well.  Send more information on the scenario and we will continue with this problem until an resolution is found.  

Randy Spence