B Series Truck 4WD L4-2606cc 2.6L SOHC (1992)
Brake Rotor/Disc: All Technical Service Bulletins
Brakes - Pedal Pulsation
Bulletin No.: 002/94
Issued: 1/27/94
Revised
Category: P
Applicable Model/s
1990-93 B-Series
Subject
BRAKE PEDAL PULSATION
APPLICABLE MODELS/VINS
All 1990 - 93 B-Series Trucks
DESCRIPTION
Some vehicles may experience brake pedal pulsation/vibration when braking. This is caused by rust spots on the disc plate(s)/brake rotor(s). This
condition occurs on vehicles operated in areas where large amounts of de-icing road salt are used in the winter.
REPAIR PROCEDURE
If the above condition occurs, machine affected disc plate(s)/brake rotor(s) and replace brake pad(s). A new disc plate/brake rotor has a thickness of 20
mm (0.79 in.). Minimum allowed disc plate/brake rotor thickness is 18 mm (0.71 in.).
CAUTION:
BE AWARE OF THE MINIMUM ALLOWABLE THICKNESS (STAMPED ON THE SURFACE) WHEN MACHINING THE DISC
PLATE/BRAKE ROTOR. If thickness is below minimum allowed, replacement is necessary. Follow instructions in section P of the workshop
manual for brake removal and installation.
PARTS INFORMATION
Part Number
Description
Qty.
UB39 33 251A
Disc Plate/Brake Rotor
1
UB71 49 280
Brake Pad
1
WARRANTY INFORMATION
(Applies To Vehicles Covered Under Normal Warranty)
Warranty Type:
A
Customer Comment Code:
83
Damage Code:
gY
