Brakes - Squeak During Heavy Brake Application
Number 86-5-7 Date 3/86Subject: PROPORTIONER VALVE SQUEAK
1984-1985 6000 STE 1986 6000 STE WITHOUT ANTILOCK BRAKE SYSTEM (JM4)
Some vehicles may exhibit a short, squeaking noise during heavy, fast, brake apply. This noise only occurs while the brake pedal is being depressed and stops immediately when the brake pedal stops. The squeak comes from the proportioner valves attached to the master cylinder. The squeak does not affect brake performance. Vehicles found objectionable, can be corrected by installing new front and rear proportioner valves.**
Old Part Numbers 18010934 (Front) Code FY
18010936 (Rear) Code RY
New Part Numbers 18014134 (Front) Code FR
18014135 (Rear) Code RR
** Front refers to the proportioner valve closest to the front of
the vehicle, and rear is the one closest to the dash.
Use applicable labor time and operation number.