Jeep Wagoneer/Commando/Cherokee 1957-1983 Repair Information

Proportioning Valve

Print

See Figures 1, 2, 3 and 4

Click image to see an enlarged view

Fig. Fig. 1: Common type D combination valve used on early 1970s models



Click image to see an enlarged view

Fig. Fig. 2: Metering valve tool installation on the type D combination valve



Click image to see an enlarged view

Fig. Fig. 3: Type W combination valve introduced on the late 70s models



Click image to see an enlarged view

Fig. Fig. 4: Metering valve tool installed on a type W combination valve

The 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. On the Wagoneer, Cherokee and J-Series truck, through 1983, two different types of valves were used. On models in the early 1970s, a D-type valve was used, in the late 1970's, a W-type was also used. They are similar in appearance and the only significant difference is in the method of holding open the valve during bleeding. Type W uses tool J-26869; type D uses tool J-23709. The valves are not interchangeable, however. In late 1983, the W-type became the only type used on the Grand Wagoneer and J-Series truck.

On the Wagoneer, Cherokee and J-Series truck through 1983, the valve is located on the frame rail, directly under the driver's position.

REMOVAL & INSTALLATION Types D and W Proportioning Valve



  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.  

 
label.common.footer.alt.autozoneLogo