I think you need to supply some more info.
Make? Model? Year?
Locked after being parked? ...or while driving?
Below freezing?
Just any old schematic would likely be of NO value!
More than likely you are looking at a brake problem. Was the emergency brake set? It's fairly common for them to seize up when left on for that long.
It is a good possiblity the brake hose feeding that wheel is at fault.
There is a brake on each wheel. The Brake Master Cylinder is located on the driver's side near the firewall.
If the tire locks up when you apply the brakes and you have drum brakes then you may have brake fluid leaking onto the brake shoes. If you have ABS then you may have a bad wheel sensor. The adjusters on the brake shoes are out of adjustment or broken. Springs or hold down hardware may be broken. Cracked brake linings. Backing plates are worn out.
Either one or more wheel cylinders are corroded and locked up or the master cylinder is locked up. First thing to do is check the master cylinder. Then check each wheel cylinder. Replace or rebuild any that are corroded or locked up. Replace all the brake fluid in the system. On a vehicle this old, I am sure the brake fluid is contaminated. Also a leaking wheel cylinder will cause a brake to lock up. One other possibility is a collapsed brake hose. Inspect them carefully.
make sure steering wheel isn't locked. have your foot on the brake.
Brakes locked, wheel bearing frozen to spindle, emergency brake on.
There's only two things it could be: the brake cylinder or the hose. It's probably the brake cylinder, and those are easy to replace: jack up the car and put it on a jackstand, remove the wheel, then the brake drum followed by the shoes. Remove and replace the brake cylinder, reassemble the brake, bleed the system (you should only have to bleed the passenger front and driver rear since they're completely separate from the driver front and passenger rear due to the "dual diagonal" brake system cars have) and put the wheel back on.
Yes- remove wheel to inspect
Remove the tire. Check the brake caliper to see if it's locked up. If it is, remove it and see if you can clean the piston. Caliper kits are available from PerformanceProducts.com for $16 to $28. If the caliper isn't at fault, you may have spun a wheel bearing. This is quite a job for an experienced mechanic ( I dealt with mine on Christmas Day 2007). If the locked tire is in the rear, and your calipers are okay, then you might have a locked parking brake.
if itlocked-up after you pushed the brake pedal one of the caliper's are locked up or the shoes froze up on the drum. start there if you don't know most likely the problem. if not maybe the wheel Bering's
I'm going to say there's probably a hole in your brake line.