Small Coolant Pipe

Special tools and workshop equipment required

Removing

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

-- Remove the bolts -arrows- and air guide.

Fig 1: Air Guide And Bolts

Courtesy of AUDI OF AMERICA, LLC

-- Remove both the lower air guide and the air guide hose.

-- Disconnect the connector -1- from the Mass Airflow (MAF) sensor -G70-.

Fig 2: Air Flow Housing, Electrical Connector And Guide Hose

Courtesy of AUDI OF AMERICA, LLC

-- Remove the air guide hose -2-.

-- Remove the bolt -4- and the air filter housing.

NOTE:

Ignore -3-.

-- Loosen the hose clamp -2-.

Fig 3: Air Guide Hose Bolts, Air Guide Pipe Hose Clamps & Electrical Harness Connector

Courtesy of AUDI OF AMERICA, LLC

-- Remove the bolt -4-.

-- Disconnect electrical connector -arrow-.

-- Remove the bolt -1- and remove the air guide pipe downward.

NOTE:

Ignore -3-.

-- Remove the bolts -arrows- and remove the electrical connectors -1 through 3- from the bracket.

Fig 4: Electrical Connectors And Bolts

Courtesy of AUDI OF AMERICA, LLC

-- Free up the electrical wiring harness on the small coolant pipe -arrow-.

Fig 5: Coolant Hoses, Bolts And Coolant Pipe

Courtesy of AUDI OF AMERICA, LLC

-- Remove bolts -2 and 3-.

-- Disconnect the small coolant pipe from the coolant pump and from the coolant hoses -1 and 4-.

Installing

Installation is carried out in the reverse order while noting the following:

NOTE:

The hose supports, air guide pipes and hoses must be free of oil and grease before installing.

Secure all hose connections with hose clamps of the same type as those equipped by the factory.

To mount the charge hoses on their connectors securely, spray the bolts on the used clamps with rust remover before installing.

-- Air guides, installing with connector. Refer to AIR GUIDE PIPES AND HOSES WITH CONNECTOR COUPLING

-- Fill the coolant system. Refer to COOLANT, DRAINING AND FILLING .