You really need to get a manual. The process is too detailed to write up here. A good service manual will detail the process for you.
A 2004 Wrangler has an inline six, not a V6. It has a timing chain.
Chain
That engine uses a timing chain which never needs serviced under normal conditions.
No, the 3.8L v6 has a timing chain
The 1987 22RE engine has a timing chain, not a timing belt. Timing chains are generally more durable and are designed to last the life of the engine, whereas timing belts need to be replaced at regular intervals.
Chain
The V6 has a timing CHAIN
timing CHAIN
Chain
Timing chain.
According to the Gates website , the 3.0 liter V6 in a 1987 Nissan Maxima : has a timing BELT , it's an interference engine , and change the belt at 60,000 miles
no