I used to repair split rims and big old tractor tires. There's special tools that make the job a whole lot easier. You'll need some wedges and a three pound sledge to break the bead and some smooth tire irons to pull the tire over the rim. Always be sure not to snag or pinch the tube when dismounting and mounting the tire. When filling the tire, make sure your stem is square in the hole, apply some tire lube (dish soap works in a pinch) and fill to around 20PSI. Let the air out completely to let the tube center itself in the tire and reinflate to the pressure you desire.
Scott

Scott Ward

2 1948 1.5-ton Loadmasters
The red one and The snow pusher
1 1950 3100
1 1955.1 Chevy 6500
1 1954 Chevy 6500 2-Ton
1 1955 1st Series COE 5700
1 1963 K20 (454)
1 1964 C10 (350)
1 1951 1.5-ton Dump Truck
1953 and a 1956 Ford F800

Raising a teenager is like trying to nail Jello to a tree!