Plymouth Workshop Manuals
PB 150 V8-318 5.2L VIN T 2-BBL (1983)
Brakes and Traction Control > Hydraulic System, Brakes > Brake Proportioning/Combination Valve > Component Information > Description and Operation > Brake Warning Switch Description > Page 2648
Brake Proportioning/Combination Valve: Description and Operation
Fig. 23 Type 1, Combination Valve
Fig 2 Brake Warning Switch / Hold Off Valve (Cut Away View)
NOTE: This valve is part of a combination valve. See Application and ID.
The proportioning valve section transmits full input pressure to the rear brakes up to a certain point, called the split point. Beyond that point it
On light pedal applications, approximately equal brake pressure will be transmitted to the front and rear brakes.
At higher pressures, the pressure transmitted to the rear brakes will be lower than to the front brakes to prevent premature rear wheel lock-up
If hydraulic pressure is lost in the front brake system, rear brake system hydraulic pressure moves the brake warning switch piston and opens a
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