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deMort
Long Beach


Joined: 21 Mar 2015
Posts: 6320
Location: Brighton


PostPosted: Sun Feb 03, 2019 8:34 pm    Post subject: 997 gen 2 drive belt Tensioner failure . Reply with quote

See the image below ..

No.1 . T50 bolt that locates it.
No.2 the pivot , it looks like a washer but isnt .. its a pivot .
No.3 the 30 or 32mm nut you adjust it with , i forget which size off hand.

You move No 3 .. if the bolt moves then No.2 is siezed .. you need the top part of the tensioner replaceing .

The lower damper only needs changeing if its leaking , again the roller pully is optional .

Damage can occur if its left .. think of the bolt doing up or unwinding as it moves , and this is what happens .. 4k RPM and it lets go .. expensive .

i dont want to scare but i have seen an engine replacement due to this .. only once and thats since the Gen 2 came out , but it snapped the block fixing for this part ... ( warrenty )

I will say that a lot of mechanics out there dont realise this ... a lot do .. but not all ...

Its an easy check to prove as above .

Just an advise as its a silly item that can be easily be over looked .

Gratitude to Windy101 for the image .

EDIT .. bolts are T50 not T30 .. for some reason i had it in my head they were T30 .. geting old i guess Smile
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Last edited by deMort on Fri Feb 22, 2019 8:19 pm; edited 1 time in total
 



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Windy101
Monza


Joined: 05 Jun 2015
Posts: 212



PostPosted: Sun Feb 03, 2019 9:01 pm    Post subject: Reply with quote

I would just like to add my sentiments to those many others have already expressed.

deMort, you are a total gentleman and helpful beyond measure.
 
  
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HSC911
Long Beach


Joined: 23 Jul 2014
Posts: 6359
Location: Bedford


PostPosted: Mon Feb 04, 2019 1:20 am    Post subject: Reply with quote

Yeah
 
  
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Windy101
Monza


Joined: 05 Jun 2015
Posts: 212



PostPosted: Fri Feb 22, 2019 7:14 pm    Post subject: Reply with quote

I have managed to DIY this job with the help of advice from deMort and the following guides.


https://rennlist.com/forums/997-forum/986494-do-we-have-a-diy-on-belt-tensioner-replacement-for-a-997-2-a.html

https://rennlist.com/forums/997-forum/991008-belt-tensioner-replacement-997-2-a.html
 
  
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deMort
Long Beach


Joined: 21 Mar 2015
Posts: 6320
Location: Brighton


PostPosted: Fri Feb 22, 2019 8:20 pm    Post subject: Reply with quote

Edited my original post to reflect the bolts are T50 .. no idea why i thought they were T30 .. getting old i guess !!
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