Installation Details of Serpent Belt /w AutoTensioner

[Rangerjoe007]

Does anyone have any idea how you replace the autotensioner for the serpentine belt?

I know a little but it does not seem to work right.

With the Tensioner Loaded and the pin in place I installed the tentioner and pulled the pin.

Every thing apeared fine after a short one block drive the belt was loose again.

Thanks in advance for any tips or suggestions.

[KenReed]

It may vary with engine. You might get a better reply if you specify which engine you're working on.
However, on my '02 5.4L you insert the socket end of a flex bar or into a 1/2" square hole on the end of the tensioner arm. Use this bar to unload the tensioner from the belt. While so doing, pull the belt off a convenient pulley so that the belt goes slack. My tensioner then has three 10mm bolts which secure the tensioner to the engine block.

Good Luck,
Ken