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uzura inegala pneu, probleme geometrie

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HHF
post 22 Mar 2010, 18:44
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am o problema cu uzura inegala la pneul dreapta - fata.
acesta prezinta o uzura exagerata( aprox. 3 mm) pe interiorul benzii de rulare fata de exterior. la pneul stanga - fata diferenta de uzura(interior-exterior ) este mult mai mica(aprox 1mm).

geometrie am facut acum 10.000km(7 luni) perioada in care am intervenit la roata dreapta pentru schimbarea rulmentului, am mai demontat de cateva ori si pivotul .

acestea sunt datele rezultate in urma reglarii geometriei facuta in urma cu 10.000km:


...............................val anterioare .....val finale ..........banca de date
..........................................................................min.......tipic......max.
-----------------------------------------------------------------------------------------------------
convergenta totala +13.7mm...............-0.7mm......-2.1mm -1.1mm +0.0mm
-----------------------------------------------------------------------------------------------------


-----------------------------------------------------------------------------------------------------
convergenta partiala S. +7.0mm............-0.5mm.....-1.1mm -0.5mm +0.0mm
convergenta partiala D. +6.6mm............-0.5mm.....-1.1mm -0.5mm +0.0mm
-----------------------------------------------------------------------------------------------------


-----------------------------------------------------------------------------------------------------
cadere S. .....................-00gr50s..........-00gr50s.....-00gr50s -00gr20s +00gr10s
cadere D......................-00gr45s.........-00gr35s ......-00gr50s -00gr20s +00gr10s
-----------------------------------------------------------------------------------------------------


-----------------------------------------------------------------------------------------------------
fuga S.........................+03gr45s..........+03gr25s.......+04gr00s +04gr30s +05gr00s
fuga D.........................+02gr40s..........+03gr25s.......+04gr00s +04gr30s +05gr00s
-----------------------------------------------------------------------------------------------------


-----------------------------------------------------------------------------------------------------
Unghi inclinare piv.S.....+13gr20s.......+13gr20s......+12gr50s +13gr20s +13gr50s
Unghi inclinare piv.D....+13gr45s ......+13gr45s.....+12gr50s +13gr20s +13gr50s
-----------------------------------------------------------------------------------------------------


------------------------------------------------------------------------------------
Diferenta unghi viraj S. -01gr55s -01gr55s
Diferenta unghi viraj D. -02gr05s -02gr05s
------------------------------------------------------------------------------------
Dezaxare +00gr00s +00gr05s
Diferenta pe urma -04gr55s -05gr00 ------------------------------------------------------------------------------------

rezultatele care atrag atentia dupa reglare ar fi cele subliniate.

Problema poate fi de la aceste unghiuri ramase ne egalizate sau de la faptul ca am umblat la roata?

This post has been edited by HHF: 22 Mar 2010, 19:38


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jas2
post 22 Mar 2010, 18:54
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Unghiul de cadere si cel de fuga trebuie facute corect.


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HHF
post 22 Mar 2010, 19:29
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corect ar fi trebuit sa iasa si prima data, dar uite ca m-a costat 90 de lei si tot nu au facut treaba buna. acum am intrebat la un dealerul renault, din zona, si ma costa inca 110. de aceea vreau sa ma informez mai bine inainte sa mai dau niste bani si cine stie ce iese...

This post has been edited by HHF: 22 Mar 2010, 19:30


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HHF
post 24 Mar 2010, 17:03
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am inversat pneul cu exterioul la interior, nu este pneu directional, sa vad acum dupa ce am montat si un rulment nou daca se mai toceste.


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mitzunator
post 31 Mar 2010, 20:57
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pai daca ai umblat dupa ce ai facut geometria la pivot ...tu ce crezi? normal ca dupa fiecare umblare la pivot sau la capul de bara trebuie refacuta de fiecare data geometria rotilor.eu am acleasi valori ca si tine aproape 0.50 si 0.35.asa ca dute si refa geometria decate ori umblii la pivot si capete


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sans_doute
post 3 Apr 2010, 09:46
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Nu trebuie refacuta geometria dupa ce se umbla la pivot


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mitzunator
post 5 Apr 2010, 20:50
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nu nu nu trebuie.trebuie doar sa skimbam lunar cauciucurile.....normal ca trebuie.nenea ala cand se baga sub masina ce crezi ca regleaza? regleaa SI pivotul wink.gif


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betamax
post 6 Apr 2010, 18:56
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From: din lumea asta, prost făcută..
Pivotul nu este reglabil.


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sans_doute
post 6 Apr 2010, 19:06
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Tu fa-ti geometria atunci


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mitzunator
post 7 Apr 2010, 09:16
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in fine ideea este ca trebuie refacuta geometria cand se umbla la pivot si capetele de bara. daca nu trebuie atunci cand se mai face?


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greeneyes85
post 8 Apr 2010, 11:14
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Eu am schimbat capetele de bara acum aproape 2 ani si nu i-am facut geometria. In astia 2 ani am parcurs vreo 25.000 de km fara probleme. Nu se numara filete, nu se face nimic deosebit ci se tine cont de pozitia contra-piulitei de pe bieleta de directie.


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