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TSB 08-3-5

02/18/08

REAR BRAKE NOISE - ROTATIONAL CHIRP -
VEHICLES BUILT BEFORE 10/5/2007

FORD:
2008 Escape

MERCURY:
2008 Mariner

This article supersedes TSB 07-22-1 to update the Service Procedure.

ISSUE
Some 2008 Escape and Mariner (Excludes Hybrid) vehicles built before 10/5/2007 may exhibit a noise from the rear brakes while coming to a stop. This condition does not affect brake performance. The noise is typically described as a cyclic, scraping, or rotational chirp noise.

ACTION
Follow the Service Procedure steps to correct the condition.

SERVICE PROCEDURE
Vehicles built prior to 6/15/2007 follow both procedures A and B.
Vehicles built after 6/15/2007 perform only procedure B.

NOTE
PERFORMING PROCEDURE B IS THE MOST CRITICAL PART OF THIS REPAIR. ADDING LUBRICANT TO THE WHEEL CYLINDER PISTONS WILL REDUCE FRICTION BETWEEN THE WHEEL CYLINDER PISTON AND ALUMINUM WHEEL CYLINDER WALL ELIMINATING NOISE SOURCE.

PROCEDURE A
1. Replace the rear brake shoes. Refer to Workshop Manual (WSM), Section 206-02.
2. Apply Motorcraft(R) Silicone Brake Caliper Grease and Dielectric Compound to the contact points between the shoe and the rear backing plate. Ensure grease will not contact brake lining surface.

PROCEDURE B
1. Remove the rear brake shoe return springs.
2. With the brake shoe return springs removed push the leading or trailing shoe into the wheel cylinder until the shoe bottoms out. The wheel cylinder dust boot (opposite depressed shoe) will have to be pulled back to reveal the wheel cylinder piston.
3. Apply Motorcraft® Silicone Brake Caliper Grease and Dielectric Compound around the wheel cylinder pistons and then repeat procedure for opposite side wheel cylinder pistons.
4. Once both wheel cylinder pistons have been lubricated, shuttle the pistons side to side three (3) or more times to distribute the lubricant and ensure smooth movement.

Parts Block
PART NUMBER
PART NAME
8L8Z-2200-BDBrake Lining Kit
XG-3-AMotorcraft(R) Silicone Brake Caliper Grease and Dielectric Compound
WARRANTY STATUS: Eligible Under Provisions Of New Vehicle Limited Warranty Coverage

IMPORTANT: Warranty coverage limits/policies are not altered by a TSB. Warranty coverage limits are determined by the identified causal part.

OPERATION
DESCRIPTION
TIME
080305A2008 Escape/Mariner Built Prior To 6/15/2007: Replace the Rear Brake Shoes Includes Time To Apply Silicone Lubricant to Contact points And Wheel Cylinder Pistons (Do Not Use With 2001BB 2001B1B)
1.0 Hrs.​
080305B2008 Escape/Mariner Built After 6/15/2007: Apply Silicone Lubricant to Wheel Cylinder Pistons, Includes Time To Remove and Re-Install Rear Brake Shoe Return Springs (Do Not Use With 2001BB, 2001B1B)
0.7 Hr.​
DEALER CODING
BASIC PART NO.
CONDITION CODE
2200
42​
 

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Bulletin No: 04-002/08

Last Issued: 02/07/2008

Subject:
REAR BRAKE NOISE - ROTATIONAL CHIRP

BULLETIN NOTE
This bulletin supersedes the previous bulletin 04-003/07, issued on 12/14/07. The DESCRIPTION, REPAIR PROCEDURE, and WARRANTY INFORMATION have been revised.

APPLICABLE MODEL(S)/VINs
2008 Tribute vehicles produced before October, 5, 2007

(Service Bulletin is not applicable to Tribute Hybrid)

DESCRIPTION
Some vehicles may exhibit a rear brake noise when coming to a stop. The noise is sometimes described as a cyclic, scraping, or rotational chirp noise. This condition does not affect brake performance. Depending on the type of rear brake shoes that are installed on the vehicle, proceed to the correct repair procedure below.

^ Built BEFORE 06/15/07, with OEM rear brake shoes installed, perform REPAIR PROCEDURE "A" AND "B"
^ Built 06/15/07 to 10/04/07, with revised "bent tab" rear brake shoes installed, perform REPAIR PROCEDURE "B" ONLY

NOTE:
PERFORMING REPAIR PROCEDURE "B" IS THE MOST CRITICAL PART OF THIS REPAIR. ADDING LUBRICANT TO THE WHEEL CYLINDER PISTONS WILL REDUCE FRICTION BETWEEN THE WHEEL CYLINDER PISTON AND ALUMINUM WHEEL CYLINDER WALL ELIMINATING THE NOISE SOURCE.



REPAIR PROCEDURE "A"
(For vehicles built BEFORE June 15, 2007 with OEM rear brake shoes installed)
1. Replace rear brake shoes with revised "bent tab" brake shoes according to the Workshop Manual (section 04-11 BRAKE SHOES REMOVAL/INSTALLATION).

2. Apply Mazda silicone brake grease to contact points between brake shoe and rear backing plate.
NOTE:
Ensure grease will not contact brake lining surface.

3. Repeat procedure for opposite side brake shoe and rear backing plate.

4. Proceed to REPAIR PROCEDURE "B".

REPAIR PROCEDURE "B"
(For vehicles built BEFORE June 15, 2007 with OEM rear brake shoes installed, AND for vehicles built from June 15, 2007 to October 04, 2007 with revised "Bent Tab" type rear brake shoes installed)
NOTE:
PERFORMING REPAIR PROCEDURE "B" IS THE MOST CRITICAL PART OF THIS REPAIR. ADDING LUBRICANT TO THE WHEEL CYLINDER PISTONS WILL REDUCE FRICTION BETWEEN THE WHEEL CYLINDER PISTON AND ALUMINUM WHEEL CYLINDER WALL ELIMINATING THE NOISE SOURCE.

1. Remove rear brake shoe return springs.

2. Push leading or trailing brake shoe into wheel cylinder until brake shoe bottoms out.
NOTE:
The wheel cylinder dust boot (opposite depressed brake shoe) will have to be pulled back to reveal the wheel cylinder piston.

3. Apply Mazda silicone brake grease around wheel cylinder pistons.

4. Repeat procedure for opposite side wheel cylinder pistons.

5. Once both wheel cylinders have been lubricated, shuttle pistons side to side three (3) or more times to distribute lubricant and ensure smooth movement.

6. Verify repair.

PART(S) INFORMATION
Part Number​
Description​
Qty.​
Notes​
ZZC1-49-240A​
Rear Brake Shoes (Left)​
1​
"Bent Tab" type​
0000-77-XG3A​
Mazda Silicone Brake Grease(Left)​
1​
WARRANTY INFORMATION
Warranty Type
A​
Symptom Code
82​
Damage Code
9E​
Part Number Main Cause
ZZC1-9-240A​
Quantity
1​
Operation Number / Labor Hours:
YY482ARX / 1.0 Hrs (Repair Procedure "A" and "B" - For vehicles built BEFORE 6/15/07)
YY482XRX / 0.7 Hrs (Repair Procedure "B" - For vehicles built AFTER 6/15/07)​
NOTE:
The warranty for this repair is 12 months or 12,000 miles, whichever comes first.
 
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