where does brake fluid goes?

**bok_yo** · November 6th, 2010 12:05 PM

situation:
malakas ang preno. walang leak ng brake fluid sa mga gulong including the brake fluid lines and the load sensing valve.

problem:
nababawasan ang brake fluid sa reservoir after 1,000 km about 1/16 inch ang ibinaba ng brake fluid level.

car is a revo. ano at saan kaya ang problema?

**moejun2** · November 6th, 2010 12:17 PM

could be an internal hydrovac leak. also, could be due to the brake pads becoming thinner due to use. but 1000 kilometers seems to be such a short distance to start losing brake fluid.

**boybi** · November 6th, 2010 12:20 PM

Could be thinning of the brake pads.

**bok_yo** · November 6th, 2010 12:38 PM

brake pads are still ok. makapal pa rin at based on my observation d masyadong nagbago ang thickness. mas mablis talaga magbawas ng fluid compared to my neighbor's car.

is there a way na ma-check ko kung may leak ang hydrovac using basic method?

**t2erns** · November 6th, 2010 06:31 PM

Originally Posted by bok_yo

brake pads are still ok. makapal pa rin at based on my observation d masyadong nagbago ang thickness. mas mablis talaga magbawas ng fluid compared to my neighbor's car.

is there a way na ma-check ko kung may leak ang hydrovac using basic method?

tanngalin mo yung vacuum hose na nakakabit sa brake booster, mag insert ka ng straw or zip tie na aabot hanggang bottom ng booster then check mo kung nabasa, kung basa ng brake fluid may leak ang primary piston ng master cylinder. BTW kung may leak ang booster it will not consume brake fluid, titigas lang ang tapak mo sa brake because of vac leak

**mazingerZ** · November 6th, 2010 07:29 PM

Maybe the hydrovac's seal broke, transferring a portion of the brake fluid there. It happened to me once. Lunod na pala ang hydrovac ko. Key observation here is that your brake pedal will be spongy when you apply brakes. The remedy made was a change to a surplus hydrovac. It cost me around P1.5k.

**desert fox** · November 6th, 2010 09:13 PM

Originally Posted by mazingerZ

Maybe the hydrovac's seal broke, transferring a portion of the brake fluid there. It happened to me once. Lunod na pala ang hydrovac ko. Key observation here is that your brake pedal will be spongy when you apply brakes. The remedy made was a change to a surplus hydrovac. It cost me around P1.5k.

+1 dito.

**ReXBadBoy** · November 7th, 2010 02:52 PM

Originally Posted by mazingerZ

Maybe the hydrovac's seal broke, transferring a portion of the brake fluid there. It happened to me once. Lunod na pala ang hydrovac ko. Key observation here is that your brake pedal will be spongy when you apply brakes. The remedy made was a change to a surplus hydrovac. It cost me around P1.5k.

yep.. experience that before

**alwayz_yummy** · November 7th, 2010 03:24 PM

sa front disc brakes--numinipis ang pad mo kasi..walang spring ang calipers ng disc brakes unlike sa drum.

mas noticeable sa 4-wheel disc brakes..

pag walang leak, your brake fluid level is a good indicator kung gaano na kanipis ng pads mo sa disc brakes...

**t2erns** · November 8th, 2010 08:19 AM

common misconception na ang booster ang nag le-leak, actually it's the master cylinder ang nagleleak. pag nagleak ang primary piston ng master cylinder ay hindi mo makikita ang leak at sa booster mapupunta ang brake fluid , pag napunta sa booster ang leak ito ang sisira ng seal ng booster. very common sa mga mechanic ang magpalit ng booster but they're not actually adressing the cause of the problem. sooner or later ay mag fa-fail uli ang booster.