Where possible the recommended intervals have been compiled from vehicle manufacturers' information. In a few instances no recommendation has been made by the manufacturer and the decision to replace the belt must be made from the evidence of a thorough examination of the condition of the existing belt.

Apart from the visible condition of the belt, which is explained fully later in this section, there are several other factors which must be considered when checking a timing belt:
Is the belt an original or a replacement.
When was the belt last replaced and was it at the correct mileage.
Is the service history of the vehicle known.
Has the vehicle been operated under arduous conditions which might warrant a shorter replacement interval.
Is the general condition of other components in the camshaft drive, such as the tensioner, pulleys, and other ancillary components driven by the timing belt, typically the water pump, sound enough to ensure that the life of the replacement belt will not be affected.
If the condition of the existing belt appears good, can you be satisfied that the belt will not fail before the next check or service is due.
If the belt does fail, have you considered the consequences. If the engine is an INTERFERENCE type then considerable expensive damage may well be the result.
The cost of replacing a belt as part of a routine service could be as little as 5 to 10% of the repair cost following a belt failure. Make sure your customer is aware of the consequences.
If in doubt about the condition of the belt - RENEW it.
Refer to the Toothed Timing Belts/Service Replacement section for further information relating to arduous or adverse operating conditions, inspection and service replacement.

Del to tai as su tavim pilnai sutinku, bet gi ne normaliam servise keiciau. Manau jie ta dalyka turejo ivertint. Kas liecia grantija, tai turiu saskaita faktura uz atliktus darbus. Siais laikais to pilnai pakanka.

Idomu kai tiek keicia o svarbiu mazgu nepakeicia kuris turi ta pacia itaka kas ir nepakeistas dirzas ?!? Tai kam tada is vis keisti ta dirza Suprasciau jei pats butum keites, nezinojes ir panasiai, taciau siuo atveju absurdas. Belieka palinketi kad nieko nenutiktu, nes jei per sutaupytus kelis simtus ant vandens pompos uzlenksi visa varikli - kaltu nebus. Nepades saskaita, nes ta ka pakeite - tas laikys

Priklausomai koks gedimas, taciau bet kuriuo atveju remontui sansu yra labai mazai. Dek is sroto jei rasi kas parduos. Kainu nezinau.

Na kokiu budu buvo nustatyta tikrai nezinau, nes nuveziau masina i servisa ir palikau. Na man si karta pasiseke. Purkstuka pavyko suremontuot, tas malonumas atsiejo 170.00 Lt. Plius kainavo purkstuko nuemimas ir pastatymas, kuro filtras ir jo keitimas. Visa tai apie 350.00 Lt. Bendroj sumoj virs 500 litu. Siaip jei kam reiktu purkstukus keisti galiu pasakyt kad malonumas nepigus. Pigiausiai radau 1200.00 Lt vienas purkstukas, AUDI centre 2300.00 Lt. Plius keitimo darbai.

Nesu tikras ar čia postinu, bet atradau tokį dokumentą, tai pusę keturių ryto negalėjau sustot skaityt šiek tiek info apie W12 variklį, tipo personalo apmokymui, čia kur USA yra audi akademija. Daug iliustracijų ir aiškiai parašyta, kad visi suprastų.
http://uploaded.to/?id=y8jneh

ir kas sitam 40v nutiko ? kodel jis lauk issoko ?

sveiki:) siandien nutruko dirzas pagrindinis
klausimas
ar lanksto voztuvus audinems 2.8 30voztuvu  ?

 :[ sudas  uzkniso ta a8 remontuot ir remontuot per pusmeti daugiau pas meistrus nei ant jkelio prabuvo 

sveiki:) siandien nutruko dirzas pagrindinis
klausimas
ar lanksto voztuvus audinems 2.8 30voztuvu  ?

greiciausia pasikeisi visus isiurbimo voztuvus ir kompensatorius. kiek pamenu ismetimo voztuvams padaryti isema stumoklyje. isiurbimo voztuvo kotelis 6mm ir kompensatoriai maziukai

ne tik dvi dienas pavelavai, bet ir dar kokius 40 000 km ....

viskas ok
neuzlankste jokiu voztuvu
super duper  :s

galiu pasakyti kad tau labai labai pasiseke.