Checking / setting turbo1 pressure regulator

Preparation

To simplify the following text, the terms turbo1 and turbo2 are used.

turbo1 is for cylinders 1,2, and 3. turbo2 is for cylinders 4, 5, and 6.

NOTE:

Always check / set both the pressure regulators.

Fig 1: Identifying Engine And Stabilizer Brace

Courtesy of VOLVO CARS OF NORTH AMERICA.

Remove

the screw for the engine stabilizer brace mounting on the engine
the cross stay between the suspension turrets
the plastic charge air pipe. Place to one side
the plastic intake pipe. Put it to one side.

Remove the pressure regulator hoses at the T-piece

Position the turbo1 pressure regulator hose so that it can be reached from underneath the car later on.

Fig 2: Identifying Split Pin From Lever And Push Rod

Courtesy of VOLVO CARS OF NORTH AMERICA.

Raise the car.

Remove the lower splash guard.

Pull down the hose from the pressure regulator.

Remove the split pin from the lever.

Lift off the push rod.

Connecting test equipment

Fig 3: Identifying Manometer Must Always Hang Vertically From Its Hook When Taking Readings

Courtesy of VOLVO CARS OF NORTH AMERICA.

Connect

manometer 9995646 to the pressure regulator hose
pressure regulator 9995544 to the manometer.

NOTE:

When taking readings the manometer must always hang vertically from its hook. This is to ensure that the correct values are obtained. Set the three-way junction handle to the middle position.

Screw out the adjustment screw for the pressure regulator completely.

Connect compressed air to pressure regulator.

Screw in the adjustment screw for the pressure regulator so that the manometer displays the value applicable to the relevant engine, according to the chart below.

The three-way junction connector has a vent (drilled hole) where it connects to the pressure regulator to facilitate setting the correct pressure.

Engine	Adjustment pressure
B6284T	45 kPa

Checking and adjusting push rod

Fig 4: Identifying Pushing Lever For Boost Pressure Control Valve Towards Turbocharger Housing

Courtesy of VOLVO CARS OF NORTH AMERICA.

Push the boost pressure control (BPC) valve lever towards the turbocharger (TC) housing. The boost pressure control (BPC) valve should be closed.

Check that the push rod locates on the lever lug.

If necessary, adjust the push rod until it locates.

NOTE:

The boost pressure control (BPC) valve spindle must be mounted on the lever when the lock-nut is adjusted.

The diaphragm in the pressure regulator will be damaged if the push rod is twisted.

Finishing

Fig 5: Identifying Split Pin From Lever And Push Rod

Courtesy of VOLVO CARS OF NORTH AMERICA.

Install the split pin on the lever.

Tighten the locknut on the lever.

Remove the test equipment.

Insert the hose upwards following previous routing.

Install the lower splash guard.

Lower the car.