BRAKE HEIGHT SENSING VALVE ADJUSTMENT PROCEDURE

Model and Year: 1986 CHEVROLET STATION WAGON

TO: ALL CHEVROLET DEALERS

Component service parts will not be available to dealers to service the Power Master Brake assembly.

After performing diagnosis, as outlined in the 1986 Chassis Service Manual, if unit replacement or internal repairs are necessary, a remanufactured power master unit should be installed.

P/N 18013682 POWER MASTER UNIT

Follow the instructions in Chevrolet Shop Manual Section 5D4-7-5D4-9, and included information in parts package to assure proper installation and operation.

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.