Brake line repair

[hammerl]

yung sira po sir nasa likod ng wheelcylinder na brake line. di ko napicture-an
ka itsura po ito nung line sa pinag rerefillan ng brake fluid.

may alam po ba kayo nagrerepair ng brake line? kasi noong monday nagpaayos ako ng drumbrake nagka leak sa left side. after ma install yung mga new parts(wheelcylinder at brake shoe) habang i ni air bleed na nung mekaniko yung left drum brake nakitaan ng leak sa fittings from brake line papuntang wheel cylinder, niremedyohan lang ng teflon tape uing thread para di daw mag leak. yung sa right side naman ay ok, ang problem lang ay dun sa left side.

today nag hanap naman ako dito sa amin, may napagtanungan ako if nag rerepair sila ng brake line.
1st shop: sabi ng mekaniko, pag papalitan yung may leak na brake line ang replacement is copper imbes na yung katulad ng original na nasira.
2nd shop:sabi ng mekaniko is puputulin yung nasirang part ng brake line at lalagyan ng o-ring yung fitting papuntang wheel cylinder para hindi mag leak. at nasabi niya ay natutunaw daw ng brake fluid yung teflon.

tama ba copper ang ipalit or may mas maganda pang solusyon? yung sa oring ba ok din? yung tungkol sa teflon natutunaw ba sya ng brake fluid?natakot ako pagkasabi haha kaya hiningi ko nalang contact number nila, magkaiba kasi procedure nila haha.

[dr. d]

i haven't peeked under the car in a long time, so i don't know if copper tubing or rubber tubing...
what i do remember is, if orig is copper, then replace with copper. if orig is rubber, then replace with rubber.
and once it leaks, replace. teflon just doesn't do it.
good luck.

[StockEngine]

the fittings probably need more tightening, for hydraulics you need a counter wrench against the tightening wrench.

alam no naman mga kunwari-mekaniko ...

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[mina_nuka]

In the u.s. it is against the law to use copper for hydraulic brake lines. If the occupants of the car die in an accidental due to faulty brakes, that idiot of a mechanic can be charged and found guilty of manslaughter.

The brake fittings do not need Teflon tape. The fittings are either 45° flare nuts or ISO bubble fittings. If they don't seal, replacement is necessary.


Look for a competent automotive technician not a plumber.

[hammerl]

*dr.d depende ata sa model ng car and sa type ng brake(disc or drum) yung itsura ng lines.example po if titignan mo yung picture sakin, makita mo yung may clamp is rubber brake hose yung before pinagkakabitan is the brake line then brake hose thenbrake line uli po bago mag wheel cylinder.
*stockengine
yes dapat magtanong muna pag parang panget yung procedure nila gumawa iwas muna.
*mina_nuka
oo nga e hirap makahanap ng shop na may nagfflare ng brake line dito sa parañaque.
yung napuntahan ko ay autosupply tapos sa harap may mga mekaniko.>_<

try ko muna dito kung mayroon.
if mayroon kayong alam na nag flare ng brake lines malapit sa paranaque or las pinas, pa share naman po ty.

iniisip ko nga din pala if yung sa mga jeepney kung pareho lang procedure sa paggawa ng brake line.

[mina_nuka]

*dr.d depende ata sa model ng car and sa type ng brake(disc or drum) yung itsura ng lines.example po if titignan mo yung picture sakin, makita mo yung may clamp is rubber brake hose yung before pinagkakabitan is the brake line then brake hose thenbrake line uli po bago mag wheel cylinder.
*stockengine
yes dapat magtanong muna pag parang panget yung procedure nila gumawa iwas muna.
*mina_nuka
oo nga e hirap makahanap ng shop na may nagfflare ng brake line dito sa parañaque.
yung napuntahan ko ay autosupply tapos sa harap may mga mekaniko.>_<

try ko muna dito kung mayroon.
if mayroon kayong alam na nag flare ng brake lines malapit sa paranaque or las pinas, pa share naman po ty.

iniisip ko nga din pala if yung sa mga jeepney kung pareho lang procedure sa paggawa ng brake line.

As per your posted picture, replace the wheel cylinder and/or the brake hose. Usually, the softer aluminum wheel cylinder threads get stripped first before the flare nut fitting.

[dr. d]

so where is the leak? if it is at the end of that length of rubber tubing with the vise grip, where it screws into the brake slave cylinder inlet, then just simply replace that hose. dami-daming nabibiling brake hose na yan.
the other possibility is, your slave cylinder is defective, probably at its inlet port. if so, then you have to replace it.

btw. sigurado ba kayong sarado yung bleeder nipple? baka yun ang source of leak?

this is supposed to be a very simple problem. i think the cause of the "complication" is TS's in-ability to show the picture of the actual leak.

good luck, TS.
heh heh.

[Lew_Alcindor]

That should be a simple repair job for a knowledgeable mechanic.

Just replace the rubber brake hose (not copper tubing). If that doesnt help, buy a new brake cylinder.

TBH, yung replacement madali. Hassle jan yung bleeding.

[dr. d]

That should be a simple repair job for a knowledgeable mechanic.

Just replace the rubber brake hose (not copper tubing). If that doesnt help, buy a new brake cylinder.

TBH, yung replacement madali. Hassle jan yung bleeding.

tapak!
bitiw...
tapak!
bitiw...

hoy! nag-hangin ulit! hindi mo ba chi-nek yung master reservoir?? lagyan mo!
ulit tayo...

tapak....

heh heh.

[mina_nuka]

Again





DO NOT USE COPPER TUBING FOR BRAKE LINES

[weisshorn]

Pag brake system ang pinag usapan wag makipag sapalaran. Ibalik sa orig/OEM setup. Better safe tha n sorry...rip!

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[hammerl]

pinaayos ko po yan nung monday may leak kasi yung left drumbrake,bago lang po yung wheel cylinder nyan sir saka shoes, pair daw mag replace pag may leak.
yung arrow po yung may teflon. yan yung nilagyan ng mekaniko kasi diyan daw nag leleak nung nag air bleed na siya ng left drumbrake.

brake line din ba name ang tawag pag maghahanap sa auto supply. kaso saan gawa kung hindi po siya copper?
namamagnet po yung brakeline nang i test ko yung harddrive magnet ko. sinukat ko din ng plastic caliper ko 3/16 size

[mina_nuka]

If the brake line is available at the dealership, get the OEM. Or if it's not available, get a prefabricated line and bend it to the oreegeenal shape.

[dr. d]

well, if it's not a defective slave cylinder, it's a defective tubing / coupler.
you'll just have to replace each one, one at a time, to see which needed replacing.
i'd start with the tubing, as it's cheaper. you might try ready-made ones (yess, such things are available, for popular models!), or you remove yours and ask the store to duplicate it.

but definitely, teflon tape is not it!

[hammerl]

pag yung original san po kaya nakakabili old nissan 94lec po kasi,parang pa fabricate nalang solusyon.
new brake line fittings saka un brake line para di na masakit sa ulo.
if ever na walang available fittings yung shop na pag papaayusan ko okay lang ba i reuse yung old fittings?

[mina_nuka]

pag yung original san po kaya nakakabili old nissan 94lec po kasi,parang pa fabricate nalang solusyon.
new brake line fittings saka un brake line para di na masakit sa ulo.
if ever na walang available fittings yung shop na pag papaayusan ko okay lang ba i reuse yung old fittings?

It is alright to reuse old fittings if the hex drive or the threads are not stripped. The fittings may not have caused the leak, the corroded line did.

[hammerl]

thanks mga sir sa information. update ko nalang pag napaayos na ty.

[LN106G]

thanks mga sir sa information. update ko nalang pag napaayos na ty.

My guess is, the the tapered cone receiving end of the new brake cylinder did not seat well with the OEM brake line flared end causing the leak. but tightening it optimally should solve your problem (presuming that the flared end is still ok and the end fitting hex head is not rounded). maybe your mechanic just did not tighten it properly. A very experienced and knowledgeable mechanic will NOT use Teflon with this kind of job. or maybe he doesnt have complete tools for this job

[dr. d]

a sentra!
try the casa, po. it may be more expensive, but it should be unquestionable.
try also the auto centers in banawe and evangelista.

[hammerl]

*LN106G oo nga sir pansin ko magkaiba ng kaunti yung cone shape ng luma kong wheel cylinder comparing side by side(yung luma). Buti hiningi ko hehe nang makalikot. Nung habang pinagmamasdan ko kung sino yung sira sa dalawa napansin ko ay nabutas yung rubber seal nung isang wheel cylinder kaya siguro nabasa yung buong drumbrake pati shoes at hindi na din nagana yung isang piston(na stuck). kinumpara ko din yung threads, yung sa nagana ok, pero dun sa nagka leak medyo sira yung threads. yung may sala siguro yung mas naunang naginstall ng old wheel cylinders na nag leak, hindi yung pinagpaggawaan ko this month.ang problema naman hindi sinabi sakin kung na loosethread na yung break line ng goodyear servitek pque(ibalik nalang daw pag nagka leak).
*dr.d sa facebook palang ako nagmessage sa Nissan.try ko yung sa website nila customer service kung may parts pa sila.
Yung nagpagtanungan ko dito samin na shop jp wheels center. Baka daw hindi nakalapat yung pagkakaayos o di kaya I-inspect para malaman kung sino yung may sira, yung line ba or yung thread ng wheelcylinder. may sinabi din yung manong mahal daw yung original brake line at meron nag fflare ng copper ayung nagdalawang isip tuloy ako, kaya nalimutan ko tuloy itanong yung presyo ng original at kung meron silang makukuhaan ng original. Pangit naman magpaggawa kung yung may tama yun line tapos copper lang ipapalit pag ininspect nila yung kotse. Babalikan ko nalang ulit sila at tanungin ko kung may stock silang mapapagkuhaan ng original brake line.
Oo nga pala Amoy pinagprituhan ng isda yung brake fluid na nag leak-__-