Brakes - Sticking/Binding/Grabbing

Article No.
93-11-7

05/26/93

BRAKES - STICK/BIND/GRAB - FRONT CALIPER PINS CORRODED

LIGHT TRUCK:
1987-90 BRONCO II
1987-92 AEROSTAR, BRONCO, ECONOLINE, F-150-350 SERIES, RANGER
1988-92 F SUPER DUTY
1991-92 EXPLORER

This TSB article is being republished in its entirety to include F Super Duty vehicles.

ISSUE:
Sticking, binding or grabbing of the brakes may be caused by brake caliper slide pins that are corroded. The corrosion does not allow the brake caliper assembly to move freely.

ACTION:
Install the new improved caliper pins that are corrosion resistant. Refer to the following Service Procedure for service details.

SERVICE PROCEDURE

1. Remove the caliper and pins. Refer to the applicable Light Truck Service Manual for service details.

NOTE:
IF PADS ARE DAMAGED OR WORN, PAD REPLACEMENT IS REQUIRED.

2. Clean the upper and lower knuckle pin grooves, upper and lower knuckle inner pad grooves, and the upper and lower caliper pin grooves with a wire brush or portable wire wheel.

WARNING:
USE SAFETY GLASSES AND AN AIR RESPIRATOR WHEN CLEANING THE GROOVES.

3. Apply a light coat of lubricant (D7AZ-19590-A) to the upper and lower knuckle inner pad grooves and upper and lower caliper pin grooves.

CAUTION:
LUBRICANT SHOULD NOT BE USED ON ROTORS, LININGS OR CALIPER PISTON BOOTS.

4. Re-assemble the caliper using the new pins, (F2TZ-2C150-A) for all vehicles except F Super Duty. Use new pins (F2TZ-2C150-B) for F Super Duty vehicles.

NOTE:
NORMAL BRAKE MAINTENANCE REQUIREMENTS LISTED IN THE OWNER MANUAL SHOULD BE PERFORMED EVERY 15,000 MILES.

PART NUMBER PART NAME CLASS

D7AZ-19590-A Lubricant-Disc Brake AM
F2TZ-2C150-A Pin-Brake Caliper B
F2TZ-2C150-B Pin-Brake Caliper (F Super B
Duty)

OTHER APPLICABLE ARTICLES:
NONE

SUPERSEDES:
92-12-14

WARRANTY STATUS:
Eligible Under Bumper To Bumper For 1992 Models And Basic Warranty Coverage For All Other Model Years

OPERATION DESCRIPTION TIME
931107A Aerostar/Ranger/Bronco II, 0.8 Hr.
(Through 1990), Explorer
(Starting 1991), F-Series
Under 8500 GVW, Bronco
And Econoline Under 8500
931107B F-Series Over 8500 GVW 0.9 Hr.
And Econoline Over 8500
GVW Through 1991
931107C F Super Duty Front 1.2 Hr.
931107D F Super Duty Rear 1.2 Hr.
931107E F Super Duty Front And 2.1 Hr.
Rear

DEALER CODING
BASIC PART NO. CONDITION CODE
2C150 41

OASIS CODES:
301000