Height Sensing Proportioning Valve
- Raise vehicle. Allow rear axle to hang free (no load condition), with wheels on. Remove nut from valve shaft and remove lever assembly. See Fig 1 .
- Rotate valve shaft to permit installation of adjustment gauge. Center hole of adjustment gauge must seat on "D" shape of valve shaft and gauge tang must seat in valve mounting hole. See Fig 1 .
- Install lever on valve shaft by pushing plastic bushing and clip assembly over serrations on valve shaft using a "C" clamp or pliers. When properly installed, serrations on valve shaft fully engage plastic bushing.NOTE: Do not drive lever assembly on valve shaft by using nut as proper valve setting may be disturbed.
- Install nut and tighten to 70-98 In. lbs. (8-11 N.m). Break tang on adjustment gauge to allow valve assembly to rotate freely. Lower vehicle and test brakes.