With Antilock Brakes

Fig. 37 Proportioning Valve Pressure Test Connections:

On vehicles with Teves Mark IV ABS system refer to "Anti-Lock Brakes" section for "Testing" procedures.

All ABS components use an ISO type tubing flare. Ensure proper adapters with ISO type flare are used when installing test gauges.
1. Install one gauge of set No. C-700A or equivalent, between hydraulic assembly and male end (inlet) of valve.
2. Install second gauge of set No. C-700A or equivalent at female end (outlet) of valve.
3. While watching inlet and outlet pressure gauges, have an assistant depress the brake pedal. Note gauge readings, then refer to "Hydraulic Brake Controls Specifications" chart.
4. If pressures are not within specifications replace proportioning valve.