Camshafts, Removing And Installing

Special tools and workshop equipment required 

• Adhesive lubricating paste

Removal

Proceed as follows:

-- Remove camshaft timing chain from camshafts, refer to CAMSHAFT TIMING CHAIN, REMOVAL FROM CAMSHAFTS .

-- Remove control housing -arrows- carefully remove from camshaft compression rings.

Fig 1: Locating Control Housing-To-Cylinder Head Bolts

Courtesy of AUDI OF AMERICA, LLC

-- Lay aside camshaft timing chain.

-- Remove intake camshaft -A- as follows:

Fig 2: Camshafts - Tightening Specifications And Tightening Sequence

Courtesy of AUDI OF AMERICA, LLC

1. Remove bearing caps 1 and 13.
2. Remove bearing caps 3 and 11.
3. Remove bearing cap 7.
4. Loosen bearing caps 5 and 9 alternately and in a diagonal sequence, and remove.

-- Remove exhaust camshaft -B- as follows:

1. Remove bearing caps 2 and 14.
2. Remove bearing caps 4 and 12.
3. Remove bearing cap 8.
4. Loosen bearing caps 6 and 10 alternately and in a diagonal sequence, and remove.

-- Carefully remove camshafts and place on a clean surface.

Installation

• Tightening specifications, refer to VALVE TRAIN OVERVIEW  and Figure.

Proceed as follows:

-- Insert support elements in cylinder head.

Fig 3: Identifying Roller Cam Followers And Support Elements

Courtesy of AUDI OF AMERICA, LLC

-- Lay roller rocker lever -1- on valve stem ends and clip in support elements -2-.

-- Oil running surfaces of both camshafts.

Fig 4: Camshaft Identification, Valve Timing

Courtesy of AUDI OF AMERICA, LLC

-- Camshaft marking between cylinder 4 and 5 cam pair:

A -

Exhaust camshaft - Identification 022 - Index 101

B -

Intake camshaft - Identification 022 - Index 102

-- Place camshafts in cylinder head camshaft bearing so that they stand at "TDC".

Fig 5: Identifying Camshaft Bar T10068 A Engage In Shaft Grooves

Courtesy of AUDI OF AMERICA, LLC

• Camshaft BarT10068 A must be situated in grooves in both camshafts.

-- Remove Camshaft BarT10068 A.

Bearing cap location:

Fig 6: Identifying Points Of Intake And Exhaust Camshaft Bearing Cap Face Outwards

Courtesy of AUDI OF AMERICA, LLC

• Points -arrow A- of intake and exhaust camshaft bearing caps face outwards.
• Identification on bearing caps is legible when read from intake side.

-- Coat contact surface -shaded- on bearing cap 7 and 8 with adhesive lubricating paste; adhesive lubricating paste

Fig 7: Coating Bearing Caps 7 And 8 Contact Surface With Adhesive Lubricating Paste

Courtesy of AUDI OF AMERICA, LLC

-- Tighten camshaft bearing cap, refer to Figure.

Fig 8: Camshafts - Tightening Specifications And Tightening Sequence

Courtesy of AUDI OF AMERICA, LLC

-- Position camshafts at "TDC".

Fig 9: Identifying Camshaft Bar T10068 A Engage In Shaft Grooves

Courtesy of AUDI OF AMERICA, LLC

• Camshaft BarT10068 A must be situated in grooves in both camshafts.

NOTE:

Turn the camshaft back and forth slightly with a wrench -arrows- if necessary to insert the Camshaft BarT10068 A.

Fig 10: Counter-Holding At Camshaft Using Wrench

Courtesy of AUDI OF AMERICA, LLC

-- Unclip screen -2- on back side of control housing -1- and clean.

Fig 11: Backside Of Control Housing & Screen

Courtesy of AUDI OF AMERICA, LLC

-- Lightly lubricate camshaft compression ring contact surface in control housing.

-- Lightly oil camshaft compression ring contact surfaces and carefully slide control housing over camshaft compression rings.

-- Tighten control housing -arrows-.

Fig 12: Locating Control Housing-To-Cylinder Head Bolts

Courtesy of AUDI OF AMERICA, LLC

-- Install camshaft timing chain (adjusting timing), refer to CAMSHAFT TIMING CHAIN, REMOVAL FROM CAMSHAFTS .