nagbavibrate habang napreno

**RyanZeke** · December 5th, 2009 02:46 PM

mga master patulong naman..

ilang beses na ko nakapag pabonding at resurface ng mga drums ko pero di matanggal ang vibration pag namemreno ako at highspeed nakakatakot tuloy gamitin van ko..

any tips mga master kung pano mawawala yun??

**jick.cejoco** · December 5th, 2009 05:43 PM

Originally Posted by RyanZeke

mga master patulong naman..

ilang beses na ko nakapag pabonding at resurface ng mga drums ko pero di matanggal ang vibration pag namemreno ako at highspeed nakakatakot tuloy gamitin van ko..

any tips mga master kung pano mawawala yun??

RyanZeke,
what is your make, model and year of the vehicle? check the brake rotors too for warpage, runout and parallelism. don't forget about the wheel bearings, they too can cause wheel shimmy. assuming the tires are balanced and no defects, i.e.; out of round, warped or has flat spots and properly inflated, then you can check for the brakes. try rotating the tires this way: RF to LR, RR to RF, LF to RR and LR to LF. try the process of elimination. most shops don't have wheel spinners to check tire defects, wheel bearing noise and imbalance while the vehicle is in the shop supported by jack stands.
jick

**miked** · December 18th, 2009 01:51 PM

boss ryan,

ganyan din preno hanggang ngayon. pinareface ko lng kasi isang disc. ayun lalu pang tumindi yung vibrations while braking kasi yung isang disc mejo warped na rin. planning to change disc and pads nako by next week. pinacheck ko rin wheel bearings at yung castle nut na naghohold sa mga bearings mejo maluwag..pinarepack ko na lahat. inform kita kung ano mangyari after the parts replacement

Originally Posted by RyanZeke

mga master patulong naman..

ilang beses na ko nakapag pabonding at resurface ng mga drums ko pero di matanggal ang vibration pag namemreno ako at highspeed nakakatakot tuloy gamitin van ko..

any tips mga master kung pano mawawala yun??

**jick.cejoco** · December 19th, 2009 06:25 PM

Originally Posted by miked

boss ryan,

ganyan din preno hanggang ngayon. pinareface ko lng kasi isang disc. ayun lalu pang tumindi yung vibrations while braking kasi yung isang disc mejo warped na rin. planning to change disc and pads nako by next week. pinacheck ko rin wheel bearings at yung castle nut na naghohold sa mga bearings mejo maluwag..pinarepack ko na lahat. inform kita kung ano mangyari after the parts replacement

miked,
all brake discs or rotors have a minimum thickness marking on them. sometimes embossed, sometimes engraved or stenciled. if this minimum thickness is not met, and the rotor is thinner than minimum, the rotor warps from heat. thin rotors tend to get hot easier too.
jick

**Howard Roark** · December 23rd, 2009 02:07 AM

mga tsips,

San pinaka mura magpa reface ng rotors sa qc area? Nag wiggle din ang manibela pag nag brake ako at 80 km/h up ang takbo. Gaano katagal ginagawa ito? sabi sa isang thread, kelangan daw yung di ordinaryo na machine lathe ang gamit kundi brake lathe (double bit).

Salamat!

**1D4LV** · December 23rd, 2009 10:39 AM

hmmm, i think its much better to replace the rotors than to have it replaced. having it refaced, as like what jick said, would depend on the thickness of the rotors, and is not a guarantee that it will be ok after the reface.

**RyanZeke** · January 5th, 2010 11:23 AM

mga sir toyota hi-ace commuter po ung sasakyan ko drumbrakes lang po sya..twice na po resurfaced nung 2009 di naman po sya warped nagpalit na din po ko ng mga pads nya kaso ganun pa din tlga...

**jick.cejoco** · January 5th, 2010 03:58 PM

Originally Posted by RyanZeke

mga sir toyota hi-ace commuter po ung sasakyan ko drumbrakes lang po sya..twice na po resurfaced nung 2009 di naman po sya warped nagpalit na din po ko ng mga pads nya kaso ganun pa din tlga...

you have four wheel drum brakes? when the drums were resurfaced, did the sound of machining change pitch just like chirp chirp or scrape---scrape---scrape? were the drums washed with warm soapy water after machining? were the hands of your "mechanic" or techinician clean avoiding oil contamination on the friction surfaces? check the wheel bearings too, they cause the same condition if they are bad

**Howard Roark** · January 21st, 2010 06:03 AM

Mga Tsips,

Sorry sa late response. Just had 40k clocked on odo, di pa siguro due para palitan ang rotors.

Pag nag brake at 140k grabe ang wiggling. Tried braking hard several times nung byahe ako probinsya to even out the rotors mimicking the lathe machine.

pero ganun pa rin.

Meron ba magaling at mura magpa reface ng rotors sa qc area?

TIA