Bronco L6-300 4.9L VIN Y 1-bbl (1983)
Brake Pad: Customer Interest
Front Disc Brakes - Squealing Noise
Article No. 86-8-13
BRAKES - FRONT DISC - SQUEAL
LIGHT TRUCK 1980-86 E100/350, F100/350, BRONCO
If the subject vehicles are experiencing a brake squeal concern, they should be serviced by installing insulator pads. Information in TSB 85-3-10 should
not be used, this new service action supersedes the previous article with updated information.
The following procedures and precautions should be observed when servicing front brake squeal concerns.
^
Remove the caliper and clean the sliding surfaces with a wire brush. Apply a light coating of ESAM1C172-A(D7AZ-19590-A) lubricant to both
surfaces. Be careful not to get lube on rotors or linings. Wipe any excess lube off after assembly. Visually inspect rotors for any obvious damage
or scoring.
^
Check the front wheel bearing end play adjustment. Adjust the front wheel bearings using the procedures included in the Light Truck Shop
Manual, Sections 11-10 and 11-12.
NOTE:
The disc brake caliper and pads must be removed from the spindle prior to adjusting the front wheel bearings.
^
Clean lining and rotor surfaces. Remove any uneven glaze buildup on lining and rotor braking surfaces by sanding with medium to fine sandpaper
or emery cloth. Uniform rotor sanding can be accomplished by holding the paper against the rotor braking surface while manually turning the
rotor.
^
Remove any loose insulator material from the pad backing plates with sandpaper or an appropriate solvent.
This procedure applies only to the following models:
1980-86 E100/150, F100/150, Bronco, F250 4x2 under 6900 lbs. GVW (single piston calipers).
^
Install the service insulator (E1TZ-2B321-A) to the backing plate of the OUTBOARD pad and lining assembly (both L.H. and R.H. brake). Bond
the insulator to the back side of the brake pad assembly with ESA-M1C140-A1 (D7AZ-19554-C) adhesive. Apply adhesive to the light color side
of each insulator. Assure that insulator is centered on backing plate and that directions for applying adhesive are followed.
This procedure is for 1980-86 F250 4x2 over 6900 lbs. GVW, F250 4x4, F350, E250/350 (dual piston calipers).
^
Install the service insulator (E1TZ-2B321-B) to the back side of the INBOARD pad and lining assembly (both L.H. and R.H. brake). Bond the
insulator to the backing plate and lining assembly using the previously listed procedure.
^
Install the service shim (E6TZ-2B321-A) to the back side of the outboard pad and lining assembly (both L.H. and R.H. brake) by clipping the shim
over the straight edge of the backing plate. Be sure the shim is fully seated and centered on the straight edge of the backing plate.
NOTE:
For dual piston caliper application only.
^
Reinstall caliper to the spindle assembly.
NOTE:
DO NOT replace linings unless required for wear or additional concerns (Shop Manual, Section 12-24).
PART NUMBER
PART NAME
CLASS
E1TZ-2B321-A
Insulator
BM
E1TZ-2B321-B
Insulator
BM
E6TZ-2B321-A
Shim
B
D7AZ-19590-A
Lubricant
A
D7AZ-19554-C
Adhesive
AM
OTHER APPLICABLE ARTICLES: Supersedes 85-3-10
WARRANTY STATUS: Reimbursable within the provisions of the Warranty and Policy Manual.
OPERATION: SP2321A86A - 1980-85
TIME:
1.1 Hrs.
OPERATION: SP2321A86B - 1986
TIME:
1.0 Hr. DLR. CODING: Basic Part No. 2001 - Code: 56
