Brakes - Front Brake Rattling Noises
T-SB-0046-08April 22, 2008
Front Brake Rattle Noise
Service Category
Brake
Section
Brake (front)
Market
USA
Applicability
TSB SUPERSESSION NOTICE
The information contained in this TSB supersedes TSB No. BROO4-07.
^ The Title has been changed from "Front Brake Squeak" to "Front Brake Rattle Noise".
^ Applicability has been updated to include 2008 model year Corolla and Matrix vehicles.
^ Production Change Information has been updated with new VIN information.
^ Parts Information has been updated.
^ The Components illustration (Figure 1) has been updated.
^ Step 1 in the Repair Procedure has been modified.
TSB No. BR004-07 is Obsolete and any printed versions should be discarded. Be sure to review the entire content of this service bulletin before proceeding.
Introduction
Some customers may experience a front brake rattle type noise when the car is traveling over bumps. Updated front disc brake cylinder (caliper) mountings and disc brake pad support plates are available to eliminate this condition.
Production Change Information
This TSB applies to vehicles produced BEFORE the Production Change Effective VINs shown.
Parts Information
Warranty Information
APPLICABLE WARRANTY
^ This repair is covered under the Toyota Comprehensive Warranty. This warranty is in effect for 36 months or 36,000 miles, whichever occurs first, from the vehicle's in-service date.
^ Warranty application is limited to correction of a problem based upon a customer's specific complaint.
Components
Repair Procedure
1. Conduct a road test to verify the noise condition - front brake rattle noise will occur when the front tire runs over a depression in the road.
2. Remove and replace the front disc brake pad support plates (2 per each caliper).
NOTE
The procedures listed below are for one side and should be used for both the RH and LH side.
A. Remove the front wheel.
B. Remove the caliper by holding the front disc brake slide pin and removing the 2 bolts.
C. Remove the 2 front brake pads from the front disc brake cylinder mounting.
D. Remove the anti-squeal shims and the pad wear indicator plates from each pad.
E. Remove the 2 front disc brake pad support plates from the cylinder mounting.
F. Remove the front disc brake cylinder mounting by removing the 2 bolts.
G. Install the NEW disc brake cylinder mounting with the 2 bolts.
Torque: 107 N.m (1089 kg.cm, 79 ft.lbf)
H. Install the 2 NEW disc brake pad support plates.
Apply disc brake grease to the back of the brake pad support plate.
I. Install the front anti-squeal shims.
(1) Apply disc brake grease to the anti-squeal shims.
NOTE
^ When replacing worn pads, the anti-squeal shims MUST be replaced together with the pads.
^ Make sure to install the shims in the correct positions and directions.
^ Apply a thin layer of disc brake grease to the area that contacts the anti-squeal shim.
^ Disc brake grease can come out slightly from the area where the anti-squeal shim is installed. Be sure to wipe off any excessive grease to avoid pad contamination.
Make sure that disc brake grease is NOT applied onto the lining surface.
(2) Install the anti-squeal shims and the pad wear indicators to each pad. Make sure to install the pad wear indicators in the correct positions and directions.
J. Install the 2 front brake pads with anti-squeal shims to the disc brake cylinder mounting.
Apply a small amount of the disc brake grease (1 - 2 mm [0.04 - 0.08 in.] thick) to the areas shown in Figure 2.
NOTE
Do NOT apply grease to the friction surfaces of the brake pads or the disc rotor.
K. Install the caliper with the 2 bolts.
Torque: 34 N.m (350 kg.cm, 25 ft.lbf)
L. Install the front wheel.
Torque: 103 N.m (1050 kg.cm, 76 ft.lbf)
3. Road test the vehicle to confirm the front brake rattle noise is NO longer present.