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Offroad Team ARO • View topic - Sistem Ambreiaj ARO 24x
     
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 Post subject: Sistem Ambreiaj ARO 24x
PostPosted: Mon Nov 02, 2009 8:51 am 
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Intrucat am avut de "furca" la propriu si la figurat cu sistemul de ambreiaj, voi prezenta componentele acestuia, modul de instalare, probleme posibile si rezolvari. Vor urma si imagini ilustrative.

Majoritatea ARO 24x au ambreiaj hidraulic, valabil pentru toate motorizarile romanesti. Nu sunt sigur daca si Andoria e la fel.

Sistemul se compune din:

* pompa hidraulica, un singur circuit cu vas de expansiune prins fie pe corup pompei, fie pe caroserie, conectat cu un furtum si doua coliere la pompa.
* o sectiune de conducta de frana
* furtun prins pe caroserie cu un calaret (similar cu prinderea de la frane pe fata)
* cilindru de ambreiaj cu tija sa de actionare.
* furca de ambreiaj, ce vine prinsa pe
* rulmentul de presiune, care apasa pe
* placa de presiune, care lucreaza vis-a-vis de
* discul de ambreiaj.

In ordine inversa, pot aparea mai multe probleme in functionarea acestui sistem.

Discul de ambreiaj - niturile ce prind discul de miez se pot forfeca. Ferodoul ce compune discul se poate uza necesitand inlocuire. Problema se repara cu un disc nou. Exista mai multi producatori, si proportional diferite calitati.

Placa de presiune - Tipic este cu trei parghii de actionare, numite "catei". Problema principala la o placa de presiune sunt tocmai aceste parghii. Rareori arcurile ce o compun isi pierd din tarie, necesitand inlocuire. In mare parte din cazuri cateii fie se deregleaza (au un joc foarte mare) fie se rod efectiv. Solutia este strangerea si reglajul lor, totodata cu confectionarea unei contra sigurante care sa nu permita suruburilor sa se slabeasca si sa ii deregleze - sau folosirea de pasta de blocaj. In cazul in care se rod, pot fi schimbati (se gaseau doar parghii la magazine) fie se sudeaza cate o bina de rulment pe fiecare din ei.

Rulmentul de presiune - Lucreaza in cele mai multe cazuri atunci cand pedala este apasata, iar motorul este pornit - fie ca masina stationeaza si ambreiajul este apasat, fie la schimbarile de trepte. Probleme lui pot fi doua. Fie se rup urechiusile in care este prinsa furca, fie ca si rulment, se defecteaza, merge prost, agata, sar bile, prinde span, etc. In primul caz "merge si asa", in al doilea, se impune schimbarea cu unul nou. Difera si aici calitatea.

Furca de ambreiaj - Se poate rupe / fisura, ceea ce impune schimbarea acesteia.

Cilindrul de ambreiaj - Fiind turnat din aluminiu, trebuie avut mare grija la strangerea aerisitorului, pentru a nu se manca filetul. Altminteri, alte defecte sunt rare.

Furtun - Este posibil sa se infunde, sau sa se sectioneze pe interior, actionand ca un fel de supapa ce nu va lasa lichidul sa treaca decat pe o directie. Cazurile sunt totusi rare, iar inlocuirea facila.

Conducta de ambreiaj - Nu sunt probleme

Pompa de ambreiaj - Este identica 100% cu pompa de frana cu un singur circuit. Pot fi mai multe probleme si rezolvari, pe care le voi trata ijntr-un topic separat.


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 Post subject: Re: Sistem Ambreiaj ARO 24x
PostPosted: Mon Nov 02, 2009 6:04 pm 
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Spre exemplificare, poze cu cateva din subansamblele sistemului de ambreiaj.

Furca de ambreiaj si rulmentul de presiune. A se observa ca una din urechi este rupta.

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02112009(001).jpg [ 284.91 KiB | Viewed 3570 times ]


Cilindru de ambreiaj.

02112009.jpg
02112009.jpg [ 277.21 KiB | Viewed 3570 times ]


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