E 350 1 Ton Van V10-6.8L VIN S (1997)
HEATER CORE PRESSURE TEST - ON-BENCH
1. Drain the engine cooling system.
2. Remove the heater core.
3. Connect the four-inch test heater water hoses to the heater core.
4. Install the plug and adapter.
5. Connect the Radiator/Heater Core Pressure Tester to the adapter.
6. Apply 206 kPa (30 psi) of air pressure to the heater core.
7. Submerge the heater core in water.
8. If a leak is observed, repair or replace the heater core.
