1995 Chrysler LeBaronFACTORY OEM SERVICE PROCEDURE

Proportioning Valve

  1. Install pressure gauge and "T" fitting between HCU and male end (master cylinder inlet) of faulty proportioning valve. See PROPORTIONING VALVE IDENTIFICATION table. Install another pressure gauge at female end of proportioning valve.
  2. Have an assistant hold brake pedal down to obtain master cylinder pressure reading on inlet gauge. Check reading on outlet gauge. Compare readings to specification. See BRAKE PRESSURE table. If readings are not as specified, replace proportioning valve.
PROPORTIONING VALVE IDENTIFICATION

Body Application (1) Split Point/Slope ID
All Models 14" Wheel Disc/Disc 435 psi/.43 WHT
(1) Split point is when proportioning valve changes rear brake pressure to prevent skidding. Slope is the pressure differential (percentage ratio) between front/rear brakes.
BRAKE PRESSURE

Master Cylinder Pressure (1) Split Point/Slope Outlet Pressure Rear Brake
1000 psi 441 psi/.45 640-720 psi
1000 psi 515 psi/.45 685-765 psi
1000 psi 588 psi/.45 725-805 psi
1000 psi 662 psi/.45 765-845 psi
1000 psi 294 psi/.30 460-540 psi
1000 psi 368 psi/.30 510-590 psi
1000 psi 441 psi/.30 560-640 psi
(1) Split point is when proportioning valve changes rear brake pressure to prevent skidding. Slope is the pressure differential (percentage ratio) between front/rear brakes.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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