Fuel and Turbocharger Cooling System Pressure Test

Fuel and Turbocharger Cooling System







Component Tests

Fuel and Turbocharger Cooling System Pressure Test

WARNING: Always allow the engine to cool before opening the cooling system. Do not unscrew the coolant pressure relief cap when the engine is operating or the cooling system is hot. The cooling system is under pressure; steam and hot liquid can come out forcefully when the cap is loosened slightly. Failure to follow these instructions may result in serious personal injury.

1. Remove the pressure relief cap. Fill with the coolant as necessary. Use a 50/50 mix of engine coolant and distilled water. Fit the Pressure Test Kit (or equivalent) to the coolant expansion tank using an aftermarket adapter.

2. NOTICE: Do not pressurize the cooling system beyond 138 kPa (20 psi) or damage to the fuel and turbocharger cooling system may occur.

NOTE: If the plunger of the Pressure Test Kit (or equivalent) is depressed too fast, an incorrect pressure reading will result.

Pump the cooling system to a maximum of 138 kPa (20 psi) and hold for 2 minutes. If the pressure drops within this time, inspect for leaks and repair as necessary.