Outline · [ Standard ] · Linear+ Pompa manuala-electrica scos ulei motor, cutie vit., Pompa vid scos introdus luchide in auto

Tipuri, loc achizitie si pret pompe vid introdus, scos ulei motor, cutie viteze (la auto care nu au buson golire gen log life, doar completare), lichid servodirectie, lichid instalatie de franare-aerisire, golire?! Sfaturi si idei! pentru uz domestic, particular si service-uri rapide! caterinca la birt! This post has been edited by dstdan: 1 Dec 2015, 16:26

Tipuri, loc achizitie si pret pompe vid introdus, scos ulei motor, cutie viteze (la auto care nu au buson golire gen log life, doar completare), lichid servodirectie, lichid instalatie de franare-aerisire, golire?!
Sfaturi si idei! pentru uz domestic, particular si service-uri rapide!
caterinca la birt!

This post has been edited by dstdan: 1 Dec 2015, 16:26

La Selgros era o scula pe la 50 lei dar daca uleiul este gros vidul prea puternic deformeaza butelcuta. Eu am scos uleiul din motor cu ea dar nu stiu daca mai merge Inca o data.
La Lidl apare din cand in cand o pompa electrical la 12 Vcc care face treaba buna si cu ulei si cu motorina.
Exista la Draper un sistem cu vidarea butelcutei ca si cel de la Selgros dar este profesional si costa de vreo cinci ori mai mult... dar face si treaba buna!

Multumesc @tunderbird, o sa arunc un ochi /urmaresc pe acolo. Mesterii astia de la service cu pistolul lor rotativ, mi-au stricat filetii de la scuturile metalice, si doresc sa trec la executia individuala a actiunilor de schimb ulei motor si cutii, si instalatie de franare. Mare minune nu-i, iar daca o faci vara, in curte este si o placere.

Scoatere uleiului trebuie sa se faca la cald ca uleiul sa fie subtire. Asa se face indiferent ca instalatia este de 50 sau 500.

Scoatere uleiului trebuie sa se faca la cald ca uleiul sa fie subtire...

Aici sunt tot felul de teorii. Unii producatori de motoare (cativa) spun ca uleiul trebuie scos rece pentru ca in timpul in care se raceste motorul se scurge tot uleiul cu impuritatile sale din partea superioara a motorului catre baia de ulei de unde evacuarea lor se face mult mai eficient printr-o forma speciala a baii de ulei.
Altii (majoritatea) la care baia de ulei nu are o forma speciala cu un fel de basa de depozitare a sedimentelor, spun ca uleiul trebuie scos la cald, mai exact imediat dupa oprirea motorului, pentru ca atunci toate impuritatile sunt dispersate in toata masa uleiului si pot fi evacuate in cea mai mare parte.

Faptul ca uleiul este mai subtire atunci cand este cald, a devenit mai putin relevant in cazul uleiurilor moderne, mai ales daca sunt sintetice. Eu nu am gasit in nicio documentatie tehnica de motor modern (si am avut ocazia sa studiez suficient de multe, slava Domnului!) vreo referire directa la necesitatea incalzirii uleiului pentru scaderea viscozitatii sale in vederea eficientizarii scurgerii. Asta nu inseamna ca subtierea uleiului nu ar ajuta golirea, dar asa cum sustine majoritatea producatorilor motoristi, se pare ca nu acesta este motivul principal pentru care uleiul trebuie sa fie incalzit... important este faptul ca golirea trebuie sa se faca imediat dupa oprirea motorului si nu la un interval suficient de mare lasat intentionat de catre mecanici ca sa nu se friga la maini, interval in care chiar daca uleiul din fierbinte devine cald dar se pastreaza inca subtire, impuritatile incep sa se separe prin depunere pe fundul baii de ulei existant pericolul imposibilitatii evacuarii lor.

This post has been edited by tunderbird: 11 Dec 2015, 13:03

In ulei n-ar trebui sa existe impuritati solide dispersate. De ce exista filtru de ulei?
Daca ai astfel de impuritati, adio cuzineti!

Ce vorbesti?
Cate bai de ulei ai dat jos pana in momentul de fata?
Sau mai simplu, de cate ori ai bagat degetelul in gaurica unde se toarna uleiul in motor? Sau de care ori ai facut schimbul de ulei la masina? Uleiul scurs din baie era limpede ca apa de izvor?

Tocmai de aceea exista filtru de ulei, ca sa nu ajunga impuritatile existente in ulei, la cuzineti.

This post has been edited by tunderbird: 12 Dec 2015, 01:00

Sunt de acord cu mizeria / depunerile de care zici (in general emulsii solide de apa si ulei - v. maioneza industriala), dar nu cu "particulele solide" care pana la urma ajung lejer pe cuzineti. Sa inteleg ca ai desfacut destule motoare deci nu trebuie sa-ti mai explic de pornire la rece, presiune mare la ulei, supapa de siguranta de la filtru de ulei, uleiul nefiltrat care trece prin acea supapa daca filtrul e colmatat (si daca spui "particule solide" atunci e colmatat) .......

Colegilor, sunt intru totul de acord cu parerile domniilor voastre de spre ulei, dar ideea intrebarii / postarii era despre o amarata de pompa

Sunt de acord cu mizeria / depunerile de care zici (in general emulsii solide de apa si ulei - v. maioneza industriala), dar nu cu "particulele solide" care pana la urma ajung lejer pe cuzineti. Sa inteleg ca ai desfacut destule motoare deci nu trebuie sa-ti mai explic de pornire la rece, presiune mare la ulei, supapa de siguranta de la filtru de ulei, uleiul nefiltrat care trece prin acea supapa daca filtrul e colmatat (si daca spui "particule solide" atunci e colmatat) .......

Pe cuzineti si in celelalte lagare ajunge ceea ce este mai fin decat dimensiunea de filtrare si poate trece prin hartia filtranta. Daca ne confruntam cu existenta unei anumite concentratii a particulelor solide in ulei, asta nu inseamna ca filtrul este deja colmatat sau ca se poate colmata in mod subit. Nu-mi mai explica despre presiunea mare a uleiului la pornirea la rece! Mai bine vezi la ce serveste supapa de pe pompa de ulei! Si nu uita si de existenta sitei sorbului pompei de ulei.
Existenta particulelor solide in ulei (inclusiv a elementelor feroase si neferoase rezultate din procesul normal de uzura a componentelor aflate in frecare) este incontestabila... analiza fizico-chimica a compozitiei uleiului din baie prin care se poate constata acest lucru, este cea mai precisa metoda pentru stabilirea gradului de uzura a motorului si pentru optimizarea costurilor de mentenanta si reparatii planificate... exact ca si in cazul analizelor de sange prin analiza uleiului se obtine o imagine generala completa referitoare la starea motorului... si nu exista rezultat in care sa nu se constate si existenta particulelor solide, oricat de mica ar fi concentratia lor.

This post has been edited by tunderbird: 1 Jan 2016, 00:41

Explica-mi care e rolul supapei din filtrul de ulei!

E retoric ?? sau chiar doresti informatii/date pe acest aspect.?!

Man, daca nu pot sa-ti dau detalii despre pompa ceruta, macar incerc si eu sa invat cate ceva , cum ar fi detalii despre nenorocita aia de supapa care se pare ca e in plus acolo ....

E retoric ?? sau chiar doresti informatii/date pe acest aspect.?!

La Selgros Berceni au acea pompa care te intereseaza. O gasesti la raionul auto pe raftul cu canistre de benzina. 48 lei si ceva banuti... nu este extraordinara, dar daca ai rabdare te poti ajuta cu ea.



<span class='edit'>8 Jan 2016, 19:17:</span>

Explica-mi care e rolul supapei din filtrul de ulei!

Iti explic daca imi spui si tu mie cate analize de ulei de motor ai vazut si studiat pana in prezent.

<span class='edit'>8 Jan 2016, 19:28:</span>

Man, daca nu pot sa-ti dau detalii despre pompa ceruta, macar incerc si eu sa invat cate ceva , cum ar fi detalii despre nenorocita aia de supapa care se pare ca e in plus acolo ....

Exista filtre de ulei care nu au acea supapa... pentru ca ea se afla montata in soclul filtrului. Dar exista totusi si motoare la care filtrele de ulei nu au deloc acea supapa de by-pass. Unii constructori de motoare au considerat ca este in plus, altii au considerat-o absolut necesara. Tu cu care din ei esti de acord?

This post has been edited by tunderbird: 8 Jan 2016, 19:32

Pentru cine vrea sa invete, uite cam ce spune un mare producator de motoare:

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requirements:
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+Excellent high temperature oxidation stability that endures
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Engine oil deterioration
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Dust and dirt entered from outside deteriorate the engine
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-Sulfur content in fuel is burned and transformed into
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Total base number
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Water content
Water in oil promotes corrosion/wear, and decreases
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Total acid number
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Flash point
The flash point is lowered by contamination with fuels.
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Insoluble
Insoluble includes acid products of engine oil, imperfect
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Am luat ieri una de la Lidl, 80 lei, de scos uleiul din baie/motor.
O voi folosi si la golire umplere cutie viteze (la una din masini nu are buson golire, ce tie si cu fabricantii astia ).
Un amic, mi-a zis ca el a cuplato si la aerisitoare, nu are debit f. mare pentru schimb, inlocuire si aerisire circuit de frana.
Oricum, nu e o avere, cei ineresati o gasiti pana azi, maine la acest magazin.