Serpentine Belt

[TTL]

how do i adjust the tension on the tensioner? i think my serpentine belt is on too tight and im not sure on where it can be adjusted. do i just loosen the bolt that runs down the center of the serp belt tensioner pulley? how many ft lbs is the bolt supposed to be torqued to? please help.

[silvermate]

yes, you got it right just loosen/tighten the tensioner bolt on the pulley to get it where you would like it..... :)

also the diagram for the belt is on the underside of the hood in case you need that.... ;)

i'm not sure the exact specs (ft. lbs.) that the bolt should be tighted too, i'm sure another member will though

good luck

[99lsguy]

TTL,

What year is your LS?

Mine is 99 and basically has an "automatic tensioner". The tensioner should have an arrow pointing between a scale on top - the needle should fall within the widest area (A). If not, replace the belt.

A new belt should keep the arrow towards the Left side of the scale.

The check for the tensioner is to:

apply 22 ft lbs of force on the drive belt and see if the tensioner moves downward - if not, replace tensioner........

These are 99LS specs........

BTW-

The drive belt tension can be released by turning the belt tensioner Counterclockwise; the pulley bolt has a left-handed thread.

99

[TTL]

mines is a 93...so i cant adjust the tension?

[99lsguy]

mines is a 93...so i cant adjust the tension?

←

Does it have a small scale above the tension pulley - with arrow/dial, etc...?

If so, then you may need a new tensioner........

Call a local Lexus parts guy and investigate.