Easy, 4 bolts, a few wires and hoses.
Remove the engine mount bolts and all the hoses and wires. With the cab up, hook a chain between the two lift loops on the head, use a hoist and lift the engine from the chain, it will slide back and out. Its really that easy. Installing is the same in reverse, but you will be best to have a helper to align the coupler to the pump. Inspect and grease the U-joints before it goes back in. Much easier to grease when its out of the machine!
