4/2 Way Valve With Thermostat

Special tools and workshop equipment required 

• Refractometer T10007
• Torque Wrench (5-50 Nm) V.A.G 1331
• Hose Clamp Pliers VAS 6340

Removing 

-- Drain the coolant. Refer to DRAINING AND FILLING .

-- Remove the generator. Refer to Removal and Installation .

-- Remove the throttle valve control module -J338-. Refer to INTAKE MANIFOLD AND ATTACHMENTS OVERVIEW .

-- Remove the coolant hoses from the 4/2 way valve with thermostat connections -A, B and D-.

-- Remove the coolant pipe from the connection -C-.

Fig 1: Identifying Thermostat Connection And Bolts

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Remove the bolts -3- from the 4/2 way valve -2-.

-- Pull the valve out of the cylinder block and then to the left in order to remove the connection -C- from the coolant pipe.

Installing 

-- First attach the 4/2 way valve and the connection -C- to the coolant pipe and then install them in the cylinder block.

-- Install the bolts -3- and tighten them to 15 Nm.

Fig 2: Identifying Thermostat Connection And Bolts

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Connect the coolant hoses as follows:

• -A- : bypass line to the cylinder head
• -B- : expansion tank
• -D- : radiator return line

-- Fill the cooling system. Refer to DRAINING AND FILLING .

-- Install throttle valve control module. Refer to INTAKE MANIFOLD AND ATTACHMENTS OVERVIEW .

-- Install the generator. Refer to Removal and Installation .