GROUP

NUMBER

BRAKES

Technical Service Bulletin
SUBJECT:

DATE

21-BR-002H
MODEL(S)

MARCH 2021

ALL

BRAKE SERVICE BEST PRACTICE RECOMMENDATIONS

This TSB supersedes 10-BR-001 to include new grease recommendations and brake service
best practices.
Description: This bulletin provides best practice recommendations when performing brake service
procedures.

Applicable Vehicles: All Hyundai vehicles
Table of Contents:
Warranty Information:............................................................................................2
Recommended Tools: ...........................................................................................2
Service Procedure:................................................................................................3
Front and Rear Brake Rotors ............................................................................3
Front Brake Calipers/Pads: FLOATING TYPE ONLY........................................4
Front Brake Calipers/Pads: FIXED TYPE ONLY ...............................................7
Rear Brake Calipers/Pads .................................................................................9
Rear Brake Drums/Shoes/Components .......................................................... 15
Brake Fluid Service ......................................................................................... 17
Brake Caliper Fluid Inspection ......................................................................... 18

Circulate To: General Manager, Service Manager, Parts Manager, Warranty Manager, Service
Advisors, Technicians, Body Shop Manager, Fleet Repair

BRAKE SERVICE BEST PRACTICE RECOMMENDATIONS

SUBJECT:

Warranty Information:
Normal warranty applies.
Recommended Tools:
NAME

PART NUMBER

PHOTO

On-car Brake Lathe
PFM 9.0 or higher version
by PRO-CUT

Air Bleeding Tool

Contact Bosch

09580-3D100

REMARK



Tool is available
through Bosch:
1-866-539-4248



Use as directed in the
vehicle’s shop manual or
TSB(s).
Previously provided to all
dealers as essential tools.
To order a replacement
contact Bosch:
1-866-539-4248


Active Hydraulic Boost (AHB)
Brake Air Bleeding Tool
Adapter

Brake Cleaner



09580-3D200

00232-19077

-

Brake Fluid,
DOT 3

12 oz
(354.9 mL)

00232-19033

-

Brake Fluid,
DOT 4

12 oz
(355 mL)

00232-19053

-

Copper Anti-Seize
Brake Lube
3M 08945

00232-19086

-



Dealer provided. Nonreimbursable shop
supplies.



Use fluid as specified in
the vehicle’s shop manual.



Use as directed in the
vehicle’s shop manual or
TSB(s).
Dealer provided. Nonreimbursable shop
supplies.




Silicone Paste
3M 08946


00232-19087



TSB #: 21-BR-002H

Silicone lubricant specified
for caliper slide pins.
Use as directed in the
vehicle’s shop manual or
TSB(s).
Dealer provided. Nonreimbursable shop
supplies.

Page 2 of 19
SUBJECT:

BRAKE SERVICE BEST PRACTICE RECOMMENDATIONS

SUBJECT:

Service Procedure:
Refer to the applicable vehicle shop manual or TSBs for service details.
Front and Rear Brake Rotors

NOTICE



1.

Always follow the brake lathe manufacturer’s recommendations for proper machining.
It is recommended to use an “on-car” brake lathe.
For more information on brake rotor service, refer to the applicable vehicle shop manual.
Measure rotor thickness BEFORE and
AFTER machining to ensure the brake rotor
is within specification.





Refer to the applicable vehicle shop
manual for minimum thickness.
When measuring the brake rotor for
minimum service thickness and runout,
remove all surface contamination and
corrosion to ensure an accurate
measurement.
Measure the thickness at 8 points (every
45 degrees) around the rotor, 5-10mm or
0.2-0.4” inboard of the outer edge.
Record these measurements on the
repair order sheet.

Measurement locations around rotor

2.

After machining, re-install the rotor (if removed) and caliper. Then, inspect the rotor runout.
 Refer to the applicable vehicle shop manual for recommended runout tolerance.
 Mount a dial indicator on the brake rotor 5-10mm or 0.2-0.4” inboard of the outer edge.
Record this measurement on the repair order sheet.

3.

Verify that the rotor is free of grease or other contamination. Clean with brake cleaner if
necessary.

4.

When re-installing the wheels, tighten the lug nuts in a star pattern to the torque specification
in the appropriate vehicle shop manual. This reduces runout from occurring.

5.

Tighten all bolts to the torque specification recommended in the appropriate vehicle
shop manual.

6.

After installing the machined rotors or installing new rotors, perform a brake burnishing
procedure.
1. Drive the vehicle and accelerate to 50 mph.
Apply the brakes using moderate force (about 0.3g deceleration rate), and slow the
vehicle to 10 mph. This action will take approximately 6 seconds.
2. With as little cooling time as possible, repeat this braking event 10 times.

TSB #: 21-BR-002H

Page 3 of 19
SUBJECT:

BRAKE SERVICE BEST PRACTICE RECOMMENDATIONS

SUBJECT:

Front Brake Calipers/Pads: FLOATING TYPE ONLY

NOTICE


1.

For more information regarding brake caliper and pad service, refer to the applicable vehicle
shop manual.
When performing the brake service on
floating type calipers, always remove, clean,
and inspect the caliper slide pins and boots.
Apply Silicone Paste, P/N 00232-19087 to
the caliper slide pins before reinstallation.

NOTICE





This procedure does not apply to
fixed-type calipers.
Use caliper slide pin recommended
lubricant.
Do not over-lubricate the slide pins.
If too much lubricant is applied to the
slide pins, air can be trapped at the
end of the pin creating an “air spring”.
This condition causes the caliper/pad
assembly to drag on the rotor.

!

!

CAUTION

Do not hang the caliper with the brake
hose.
2.

Remove the pads, and clean the pad backing plate and insulators/shims of debris.
Never reuse shims on new pads.
Inspect the pad friction surface for even wear and pad thickness. Refer to the applicable
vehicle shop manual for service limits.
Grease should not be applied to the pad backing plate unless instructed by the shop manual
or TSB(s), as it could trap debris, and increase the chance of noise or dragging.

TSB #: 21-BR-002H

Page 4 of 19
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SUBJECT:

3.

BRAKE SERVICE BEST PRACTICE RECOMMENDATIONS

Remove the pad retainers, and clean the
contact surface of the caliper from debris
and corrosion. Use a wire brush if
necessary. Apply a light coat of Copper
Anti-Seize Brake Lube, P/N 00232-19086,
(A) to prevent further corrosion.
Clean and inspect the retainers if the pads
are reused. Discard damaged retainers.
Always use the retainers included with the
new pads.

A

4.

Inspect the caliper for brake fluid leaks.
Follow the Brake Caliper Fluid Inspection
procedure on page 18.

NOTICE
If a fluid leak is found at the banjo bolt
area between the brake line and the
caliper, replace the copper washers on
the banjo fitting.

TSB #: 21-BR-002H

Page 5 of 19
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SUBJECT:

BRAKE SERVICE BEST PRACTICE RECOMMENDATIONS

5.

When re-installing the brake pads, install the
pad with the wear indicator on the inside, as
shown.

6.

Tighten all bolts to the torque specification recommended in the appropriate vehicle
shop manual.

TSB #: 21-BR-002H

Page 6 of 19
SUBJECT:

BRAKE SERVICE BEST PRACTICE RECOMMENDATIONS

SUBJECT:

Front Brake Calipers/Pads: FIXED TYPE ONLY

NOTICE


1.

For more information regarding brake caliper and pad service, refer to the applicable vehicle
shop manual.
When performing the brake service on fixed
type calipers, always remove and clean the
guide pins (B) and locking retainers (C)
using a non-abrasive method.
Inspect the pins for deformation or corrosion
that would inhibit the pads from moving
freely. It is not recommended to grease the
pins unless instructed by the shop manual or
TSB(s).

!

!

B

C

CAUTION

Do not hang the caliper with the brake
hose.
2.

Remove the pads, and clean the pad backing plate and insulators/shims of debris.
Never reuse shims on new pads.
Inspect the pad friction surface for even wear and pad thickness. Refer to the applicable
vehicle shop manual for service limits.
Grease should not be applied to the pad unless instructed by the shop manual or TSB(s), as
it could trap debris, and increase the chance of noise or dragging.

TSB #: 21-BR-002H

Page 7 of 19
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SUBJECT:

3.

BRAKE SERVICE BEST PRACTICE RECOMMENDATIONS

Clean and inspect the pad springs (D) if the
pads are reused. Discard damaged springs.
Always use the parts included with new
pads.

D

4.

Inspect the caliper for brake fluid leaks.
Follow the Brake Caliper Fluid Inspection
procedure on page 18.

NOTICE
If a fluid leak is found at the banjo bolt
area between the brake line and the
caliper, replace the copper washers on
the banjo fitting.

5.

Tighten all bolts to the torque specification recommended in the appropriate vehicle