serpentine belt tensioner replace on 93 SC400
#2
Pole Position
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Loosen the drive belt tension by turning the drive belt tensioner counterclockwise, and remove the drive belt.
NOTE - The pulley bolt for the belt tensioner has a LEFT-hand thread
Hope this helps,
Alan
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#8
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Got this done today, as it turns out u have to remove the left side upper and lower timing belt cover and the alternator . The reason the alternator has to be removed is the two lower bolts mount behind the alternator.
Thanks guys
Thanks guys
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Last edited by iceman400; 10-06-09 at 06:59 PM.
#9
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I am wondering which brand of Acc. Belt tensioner is the best?
I found Hayden and Gates...
Well OEM would be the best but probably expensive...
(
I know Dayco had issues when installing...any suggestions?
Thanks
Steve
I found Hayden and Gates...
Well OEM would be the best but probably expensive...
![Frown](https://www.clublexus.com/forums/images/smilies/frown.gif)
I know Dayco had issues when installing...any suggestions?
Thanks
Steve
#10
Lexus Champion
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Bringing this back from the grave, my belt started slipping and my tensioner squeaks like a rat, but only after it rains, and it stops when it warms up. I've been seeing people posting prices of $50 for the gates but the cheapest i found was 130?? Where is everyone finding these prices or do they not exist anymore since most of the replies are from 7 or 8 years ago?
#11
Lead Lap
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Warning: I couldn't find serpentine belt removal steps in the factory service manual, so I followed the info here for a '95 SC400. Posts #2 and #4 say to loosen the tensioner by turning the 14mm bolt counter-clockwise for a left-hand thread. I should have given the last part more thought... Right-hand threaded is the normal type, for which counter-clockwise loosens. So, counter-clockwise for left-hand threaded is tightening, not loosening.
End result, I muscled the bolt a bit too much and snapped it off... Not a big deal, being a parts car at this point. The head of the bolt had enough thread attached to it still to confirm that it's definitely left-hand threaded. I have no idea what the above posts are referencing that hasn't tripped other people up over the years.
End result, I muscled the bolt a bit too much and snapped it off... Not a big deal, being a parts car at this point. The head of the bolt had enough thread attached to it still to confirm that it's definitely left-hand threaded. I have no idea what the above posts are referencing that hasn't tripped other people up over the years.
#12
Lead Lap
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I think I figured out the source of confusion. You're only supposed to pivot the tensioner counter-clockwise to release belt tension, rather than actually removing the pulley. The factory hint that the bolt is left-hand threaded is very misleading in that respect, as that information is only pertinent when you actually want to remove it. Sure, it has to be left-hand threaded to not unscrew when pivoting counter-clockwise, but that's of no concern if they had just separated out those steps.
It's covered in section EG-13 (Engine Tune-up), pg 1389, in my copy of the FSM. Same info as posted above.
It's covered in section EG-13 (Engine Tune-up), pg 1389, in my copy of the FSM. Same info as posted above.
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ancdmd
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04-16-16 07:03 AM