Brake Maintenance

**jick.cejoco** · September 30th, 2016 05:45 PM

Most common practices:
Replace brake pads when the friction material is thinner than the backing plate of the pads
Replace the pads if they are contaminated by petroleum products
Replace the pads if they had been overheated
Resurface the brake rotors if they are warped, tapered, cracked or have less than 0.020 inch above the minimum thickness
Replace the brake shoes if they have less than mm above the river heads of friction material
Replace the shoes if the had been contaminated by petroleum products
Replace the shoes (bonded type) if the shoe lining is equal to or thinner than the shoe arc
Replace the brake drums if they are cracked or less than 0.020 inch smaller than the maximum diameter. The brake drums must be within 0.020 inch diameter of each other on the same axle
Replace the brake fluid at least every two years.

**myas110** · September 30th, 2016 05:49 PM

Originally Posted by erdiedizon

Palagi ba mahina sir? Or baka u just passed by sa water? Pag basa ang mga preno medyu mahina talaga.
Otherwise could be other things yan, check nyu po baka my leak ang fluid somewhere.

Sent from my SM-N910G using Tsikot Forums mobile app

I haven't passed thru water. pero lately ko lang naexperience yung brakes niya mahina ang kagat ng preno.

**red_one** · September 30th, 2016 05:53 PM

Originally Posted by myas110

kapag mahina na ba ang kagat ng preno, ano kaya ang mga reasons?

- kulang ba ang brake fluid sa reservoir?
- brake pads are thinner?
- yung shoes niya maluwag (dun sa may disc brake)
- or anything else?

Check everything on your list. Kailan huling ngpalit ng brake fluid? You need to drain and change every 2 years.

Sent from my D5833 using Tapatalk

**Wh1stl3r2** · September 30th, 2016 06:01 PM

Tires could also be a factor. Also, friction material hardening over time. Do your rotors have grooves on them?

**Gian Paulo** · October 4th, 2016 11:11 AM

My brake does not still shows sign of concern. But it is till necessary to reface the rotors even if not changing the pads? Or just plain cleaning of my brake system all 4 wheels and replacement of brake fluid is enough? or do i have to change na lang the pads in service for more than 5 years? Thanks mga Bro.

**jick.cejoco** · October 4th, 2016 11:22 AM

Originally Posted by Gian Paulo

My brake does not still shows sign of concern. But it is till necessary to reface the rotors even if not changing the pads? Or just plain cleaning of my brake system all 4 wheels and replacement of brake fluid is enough? or do i have to change na lang the pads in service for more than 5 years? Thanks mga Bro.

your new brake pads are generally flat when manufactured, when you install them on used brake rotors that are not flat, the contact between the rotor and the pads are not at 100 %. it requires a long break in period or bedding in period for the pads to be 100% contact with the rotors. if the friction surfaces of the rotors at least appear to be flat, you might be able to get away with it by just deglazing the rotors (using a coarse sandpaper 180-240 grit) to remove the glaze and shorten the bedding in time. when in doubt, have them resurfaced.

**rileykyrra** · October 19th, 2016 11:50 AM

Originally Posted by jick.cejoco

Most common practices:
Replace brake pads when the friction material is thinner than the backing plate of the pads
Replace the pads if they are contaminated by petroleum products
Replace the pads if they had been overheated
Resurface the brake rotors if they are warped, tapered, cracked or have less than 0.020 inch above the minimum thickness
Replace the brake shoes if they have less than mm above the river heads of friction material
Replace the shoes if the had been contaminated by petroleum products
Replace the shoes (bonded type) if the shoe lining is equal to or thinner than the shoe arc
Replace the brake drums if they are cracked or less than 0.020 inch smaller than the maximum diameter. The brake drums must be within 0.020 inch diameter of each other on the same axle
Replace the brake fluid at least every two years.

sir what do you mean po contaminate ng petroleum products?
like langis or grease?
pinunasan ko p nmn ng langis ung steel rim ko.tsktsk

**StockEngine** · December 20th, 2016 05:43 AM

Ultimate car brake test video (Explosion!) - YouTube

**miked** · December 23rd, 2016 09:15 AM

my brake system is funny.....

just serviced my front brakes kagabi at eto mga ginawa ko:

1. brake pad replacement (bosch)
2. replacement of rubber boots ng slide pin at lock bolt....as well as greasing it with silicone grease.... (hindi ko pinalitan ang square seals at rubber boots ng piston)
3. disc refacing. 21 mm thickness after. (replacement limit is 20.6 mm)
4. replacement of the brake fluid pati na rin sa clutch.

ngayon, mas malambot yung first pump kesa sa second pump during brake application....after 1 liter of brake fluid e ganun pa rin.

i suppose malambot nga siguro ang bosch...humihinto naman.

still under going bedding-in procedures as per the instruction manual ng bosch.

**barako ba ma** · December 23rd, 2016 01:31 PM

Originally Posted by miked

my brake system is funny.....

just serviced my front brakes kagabi at eto mga ginawa ko:

1. brake pad replacement (bosch)
2. replacement of rubber boots ng slide pin at lock bolt....as well as greasing it with silicone grease.... (hindi ko pinalitan ang square seals at rubber boots ng piston)
3. disc refacing. 21 mm thickness after. (replacement limit is 20.6 mm)
4. replacement of the brake fluid pati na rin sa clutch.

ngayon, mas malambot yung first pump kesa sa second pump during brake application....after 1 liter of brake fluid e ganun pa rin.

i suppose malambot nga siguro ang bosch...humihinto naman.

still under going bedding-in procedures as per the instruction manual ng bosch.

your brakes is spongy. part of pascal's principles, liquids cannot be compressed. there is still air in the system