I am replacing the timing chain on a 98 Plymouth Grand Voyager with a 3.3L engine. The manual shows a timing chain tensioner, but there is not one on the engine. There is a lot of slop in the chain (1" to 1-1/2").
I don’t know what type of manual you are using but the 3.3 V-6 Chrysler does not use a chain tensioner. There is a cam gear, a crank gear, a guide and the chain. The manual may be reffering to the snubber (guide, shoe, etc.). I believe this is attached to the timing chain cover.
It wouldn’t hurt to call your parts supplier and double-check those part numbers. In the manual, you may be looking at the wrong engine, or the wrong year. The manual could be wrong. You are using new crank and cam gears, aren’t you?