Wheel Cylinder Replacement Help

if it is not broken do not fix it especially if you lack money and time.
Check the bleeder screws if you can turn them and bleed your brakes
then put new shoes on there replace your master cylinder and then
bleed the brakes . Then when you can afford it and have the time
replace them. Then follow previous instructions, you might try a 10
dollar propane torch heating siezed bolts up often works wonders .
P.S. dont blow yourself up. Cheers and good luck.