Jeep Wrangler/YJ 1987-1995 Repair Guide

Combination/Proportioning Valve

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The combination/proportioning valve is actually a three-part unit, containing a metering valve, pressure differential valve and brake pressure warning switch. If any of these functions fails, the unit must be replaced. It is not repairable.

The valve is located on the left fender panel, just below the master cylinder.

REMOVAL & INSTALLATION



Without ABS

See Figure 1

For vehicles equipped with an Anti-lock Brakes System (ABS), please refer to removal and installation of the Combination Valve in the Anti-lock Brake portion of this section.



Click image to see an enlarged view

Fig. Fig. 1: Brake line routing and combination/proportioning valve location-without ABS

  1. Disconnect the brake lines at the valve and plug them.
  2.  
  3. Unbolt and remove the valve.
  4.  
  5. Installation is the reverse of removal. Bleed the system.
  6.  

 
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