Brake Pad Change
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ScribdTranslationsSTUDY MATERIAL LIGHT CHASSIS STUDENTS, WEEKLY FROM 9 TO 11
HOURS.
DISASSEMBLY OF DISC BRAKE PADS
Loosen the nuts or bolts of the wheels, then place the
vehicle and remove the tires.
2. Identify that it is necessary to change the brake pads, (helping yourself with
a light observe the thickness of the brake pad, if said thickness is
bring the brake pad closer, it is time to change it.
3. It is necessary to release the steering wheel lock to perform manipulation.
From the direction, it is recommended to leave a glass below.
4. Open the bleeder of a caliper, place a tray underneath.
this, with a large flat screwdriver, will look for a way to
lever and return the caliper piston.
Once the piston has returned, close the bleeder and perform the same.
procedure in the other wheel.
6. Sometimes it is necessary to repeat the procedure, because when
the moment of pressing one caliper or another tends to return a
little, due to the internal connection that they have in the pump
of braking.
7. Loosen the caliper screws, (remember that we have screws and
screw bolt.
8. Remove the caliper and hang it from the suspension or from something.
structure of the fender, this with the aim that the weight
Do not damage the pressure hose with the caliper.
9. Check the pressure hose for cracks.
the outer layer indicates that it is already very dry and therefore it is already
It is necessary to change that piece.
10. Loosen the screws of the caliper holder, only if the holder
caliper obstructs removing the disc.
11. Remove the disk and clean the diameter with a wire brush.
exterior and the surface where the bolts work, with the purpose of
look for the engraving of the minimum thickness.
12. With a vernier, measure the thickness of the disc:
a) If the disk has no lip, ridge, or edge, compare directly
the thickness measured with the recorded reading, the thickness of the disk
it must be greater.
b) If you have an eyebrow, subtract 2 millimeters from the obtained measurement with
the vernier.
c) If the disc has excessive edge and has grooves, subtract up to 5
millimeters of the measured thickness; depending on the depth
of these.
13. Compare the reading obtained with the vernier and the one recorded in.
the disk, the reading obtained should always be greater than
recorded on the disk, if it is less than or equal, that disk is no longer usable.
Note: remember that in the rectification process material is removed, if
the disc does not meet these conditions it is necessary to replace it
for a new one.
Professor Fernando Tolentino
STUDY MATERIAL FOR LIGHT CHASSIS STUDENTS, WEEKLY FROM 9 TO 11
HOURS.
14. If the disc meets the specifications, take it to
rectify.
Remember that brake pads should be changed in pairs, that is
For front wheels and rear wheels, it is not advisable to change.
brakes individually because it compromises the effectiveness of the
braking. Approximately the front brake pads are changed 3 times
due to a change of the rear ones.
INSTALLATION OF DISC BRAKE PADS
Once the discs have been rectified, we will proceed to break the lines.
of the burin cut, (if we do not do this, we will cause in the
new brake pads installed an irregular wear in the form of
grooves, premature crystallization, and short-term squeaking. The
recommendation is cleanliness during the assembly stage.
2. It is recommended to re-measure the thickness of the disk; a disk
reached 3 to 4 rectified before replacing it.
3. Sand the disc dry tangentially to the cutting lines of the
I first sand with a red #40 sandpaper and then with
one of #80. The finish should be in an "X" shape throughout the
contact surface with the pad.
4. Wash the disk very well to remove metal residues, it
it is recommended to use liquid soap and a colored dishcloth
green.
5. Dry the disc quickly to prevent it from rusting, (blow with
air pressure.
6. Once the disks are dry, place them in their corresponding dough and
Hold it with the fastening screw or a bolt or nut to secure it.
the disk to the dough.
7. Ensure that the caliper hardware and the caliper bracket are
clean, so it is recommended to wash with water and soap.
8. Make sure your hands are free of oil, gasoline, grease or
any type of solvent, avoid touching the contact surface with
the dirty fingers.
9. Lubricate the hardware with special brake grease based on
silicons, if it has rubber or latex components. If the surface
Friction is metal on metal; you can use grease for the bearing, but
in very small quantities. (The fittings are all the elements
metallic parts to hold the brake pads.
10. Assemble the brake pads by identifying the piston side and the wheel side.
Mount the caliper bracket and caliper with sufficient torque (remember
that here the braking force of the vehicle is concentrated.
11. Put on the wheels and follow the procedure for
settlement of brake pads
Settlement of brake pads
Professor Fernando Tolentino
STUDY MATERIAL FOR LIGHT CHASSIS STUDENTS, WEEKLY FROM 9 TO 11
HOURS.
Settlement is the process in which two materials combine.
superficially to achieve optimal functioning, in this case a
metallic dial element with a friction element, (either
semimetallic, asbestos, or ceramic), its purpose is to prevent
overheating (which causes crystallization) and vibrations (which cause
(squeaks), and together that the vehicle does not brake efficiently.
Drive your vehicle at 20 to 30 kilometers per hour, brake
smoothly until reaching the total high. Repeat it 15 to 20 times.
2. Drive the vehicle at 90 to 100 kilometers per hour, brake.
suddenly for short periods to reach a speed of 70
80 km per hour. Repeat it 5 to 8 times.
3. In the same way, it is recommended to the user as far as
if possible, avoid panic braking over a distance of 50 to 100 km
km.
Remember, the braking power is 5 times the power of the engine.
due to the safety factor.