Neon L4-2.0L VIN C (1997)
Brake Proportioning/Combination Valve: Tools and Equipment
Proportioning Valve Pressure Test Fitting
Proportioning Valve Pressure Test Gauge Set
GENERAL INFORMATION
The new in-line proportioning valves used on this vehicle, require new pressure fittings to test for proper proportioning valve function. The
pressure fittings are installed before and after the proportioning valve being tested to verify proportioning valve is maintaining the required
hydraulic pressure to the rear wheel brake which it controls.
CONDITION
If a condition of premature rear wheel skid occurs on a vehicle the proportioning valve should always be tested prior to it being replaced. This is
due to the fact that there are conditions other then a faulty proportioning valve which can cause a premature rear wheel skid.
TOOLS
Testing proportioning valve pressures on a vehicle with or without ABS requires using the same special tools. There are 4 new Pressure Fittings,
Special Tool 6805 or equivalent which are to be used for testing the proportioning valves. These same pressure fittings are used if the
proportioning valves are either mounted in the HCU, on an antilock equipped vehicle, or in-line on the brake tube on non-antilock equipped
vehicles. The pressure gauges used with the pressure test fittings for testing the in-line proportioning valves on both non-ABS and ABS brakes, is
the Pressure Gauge Set, Special Tool C-4007-A, or equivalent currently used for testing the combination valve.
