Checking the High Pressure

WARNING: This page is about a different car, the 2004 Volvo S40, 2003 Volvo S40, 2002 Volvo S40, 2001 Volvo S40, and 2000 Volvo S40. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Testing Power Steering System (2 Of 2)

Courtesy of VOLVO CARS OF NORTH AMERICA.

Close the intake cock on the manometer. Keep the cock closed for 3 seconds.

Read off and note the measurement results.

Repeat the check twice.

NOTE: The outlet cock must not be closed for longer than 10 seconds. This is to prevent damage to the power steering pump.

Pressure = Nominal, pressure variations within 3.5 MPa (35 bar), the system is OK.
Pressure check completed .

Install the high pressure hose on the power steering pump. Bleed the pump. See Install the Oil Pipe And the Hose On the Power Steering Pump and Fill And Bleed the Power Steering System
Pressure above nominal, the pressure variations are not within 3.5 MPa (35 bar)
Pressure below nominal, pressure variation within 3.5 MPa (35 bar). See Install the Control Valve .

NOTE: Nominal pressure in the high pressure check is 9.6 MPa (98 bar Saginaw), 11.0 MPa (110 bar ZF).