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Home >> Audi >> 2021 >> TT Quattro RS >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 52 (Cylinder Head, VALVETRAIN (Servicing - 4-Cylinder 2.0L 4V TFSI Engine (Ea 888 Generation III)) [Roadster]) >> 15 Cylinder Head, VALVETRAIN >> VALVETRAIN >> Camshaft, Removing And Installing >> Camshaft, Removing And Installing, Engine With One Camshaft Adjuster >> Installing

Camshaft, Removing And Installing, Engine With One Camshaft Adjuster: Installing

WARNING: This page is about a different variant/trim than selected.

Camshafts, Installing 

NOTE:

Sealing surfaces must be completely free of oil and grease.

Pay attention that all roller rocker levers rest on the valve stem ends.

-- If the crankshaft was turned in the meantime, bring the piston for cylinder 1 to TDC and then turn the crankshaft back again slightly.

-- Remove any sealant residue from the groove on the cylinder head cover as well as on the sealing surfaces.

-- Clean the sealing surfaces. They must be free of oil and grease.

-- Lubricate the running surfaces of both camshafts.

-- Place the intake camshaft -A- in the cylinder head. Turn the cam lobes of cylinder 4 -arrows- upward.

Fig 1: Identifying Intake Camshaft And Cylinder Head
GWWN15-10932Courtesy of AUDI OF AMERICA, LLC

-- Insert the exhaust camshaft -1- in the cylinder head cover. Turn the cam lobes of cylinder 4 -arrows- upward.

Fig 2: Identifying Exhaust Camshaft And Cylinder Head Cover
GWWM15-10035Courtesy of AUDI OF AMERICA, LLC

-- Turn the intake camshaft -1- and the exhaust camshaft -2- until the markings -arrows- are in the position shown.

Fig 3: Identifying Intake Camshaft And Exhaust Camshaft
GWWM15-10036Courtesy of AUDI OF AMERICA, LLC

-- The cams of the intake camshaft -1- and the exhaust camshaft -2- must point upward as shown -arrows-.

Fig 4: Identifying Intake Camshaft And Exhaust Camshaft
GWWM15-10037Courtesy of AUDI OF AMERICA, LLC

-- Apply the sealant on the clean sealing surface of the cylinder head cover as shown -arrows-.

GWWA15-12199Courtesy of AUDI OF AMERICA, LLC
CAUTION:

Risk of engine damage due to excess sealant in the lubrication system.

- Do not apply sealant bead thicker than indicated.

-- Mount the cylinder head cover on the cylinder head.

-- Lightly push on the cylinder head cover by hand and while doing so turn the camshaft slightly until the cylinder head cover lays >>free of tension<< on the cylinder head.

Fig 5: Identifying Cylinder Head Cover
GWWM15-10032Courtesy of AUDI OF AMERICA, LLC

-- Replace the cylinder head cover bolts.

-- Tighten the bolts in several steps. Refer to Figure for the tightening sequence.

NOTE:

Pay attention that the cylinder head cover is not tilted.

-- Turn the intake camshaft with the : T40266  in direction of -arrow A- until the marks -1 and 2- align. Push the : T40271/2  in the chain sprocket splines -B-.

Fig 6: Identifying Intake Camshaft With Adapter T40266
GWWN15-10973Courtesy of AUDI OF AMERICA, LLC

-- Turn the exhaust camshaft using the : T10172A  in direction of -arrow A- until the markings -1 and 2- align. Slide the : T40271/1  into the chain sprocket splines in direction of -arrow B-. The mark -2- is offset slightly to the right.

Fig 7: Identifying Camshaft Lock T40271/1
GWWM15-10033Courtesy of AUDI OF AMERICA, LLC

-- Turn the crankshaft on the hex fitting -2- to the "TDC point". The flat area -1- faces upward toward the cylinder head when in the "TDC point".

GWWA15-12084Courtesy of AUDI OF AMERICA, LLC

Installing the Camshaft Timing Chain 

Fig 8: Camshaft Timing Chain And Camshaft Sprocket
GWWM15-10029Courtesy of AUDI OF AMERICA, LLC

-- Engage the camshaft timing chain with the painted links -arrows- on the camshaft pins.

-- Place the camshaft timing chain on the intake camshaft, exhaust camshaft and the crankshaft. Position the painted chain links -arrows- on the marks on the chain sprockets.

Fig 9: Camshaft Timing Chain On Intake Camshaft
GWWM15-10025Courtesy of AUDI OF AMERICA, LLC

-- Install the guide rail -2- and tighten the bolts -1-.

Fig 10: Identifying Bolts And Glide Rail
GWWM15-10028Courtesy of AUDI OF AMERICA, LLC

-- Install the upper guide rail -1-.

Fig 11: Identifying Guide Rail
GWWM15-10034Courtesy of AUDI OF AMERICA, LLC

The help of a second technician is necessary for the following step.

Fig 12: Identifying Counterhold - Kit - Multiple Use T10172
GWWM15-10030Courtesy of AUDI OF AMERICA, LLC

I -  Turn the exhaust camshaft using the : T10172A  slightly in direction of -arrow A-. Slide the : T40271/1  out of the chain sprocket splines in direction of -arrow B-.

II -  Release the camshaft in the direction of -arrow C-, until the timing chain touches the guide rail -1-. Hold the camshaft in this position, install the tensioning rail -2- and tighten the bolts -3-. Release the camshaft.

-- Turn the intake camshaft with the : T40266  in direction of -arrow 1- until the : T40271/2  can be pushed out of the chain sprocket splines -2-. Release the camshaft.

Fig 13: Identifying Assembly Tool T40266 And Camshaft Clamp T40271/2
GWWA15-11429Courtesy of AUDI OF AMERICA, LLC

-- Remove the : T40271/1  and : T40271/2  .

-- Install the bolts -arrows- and tighten them. Tightening specification -item  ) Bolt.

Fig 14: Identifying Bolts
GWWA15-11390Courtesy of AUDI OF AMERICA, LLC

-- Mount the bearing bracket and the bolts -arrows- hand-tight.

-- Remove the : T40267  .

Fig 16: Securing Chain Tensioner With T40267
GWWA15-11392Courtesy of AUDI OF AMERICA, LLC

-- Tighten the bearing bracket bolts -arrows-. Tightening specification OVERVIEW - CAMSHAFT TIMING CHAINS .

Fig 17: Bearing Bracket Bolts
GWWA15-10444Courtesy of AUDI OF AMERICA, LLC

-- Install the chain tensioner -2- and tighten the bolt -1-. Remove the : T40011  , the oil pump chain tensioner must come into contact with the cut-out in the oil pan upper section -arrow-.

Fig 18: Identifying Chain Tensioner
GWWN15-10947Courtesy of AUDI OF AMERICA, LLC

-- Check the adjustment. The painted chain links -arrows- must line up with the markings on the chain sprockets.

Fig 19: Identifying Painted Chain Links Must Line Up With Markings On Chain Sprockets
GWWN15-10975Courtesy of AUDI OF AMERICA, LLC

-- Install the control valve -item  ) Control Valve.

-- Let the engine turn a second time in the direction of engine rotation.

NOTE:

Due to the ratio, the painted chain links no longer match up after the engine has been turned.

-- Remove the : T10531/4  and remove the : T10531/3  .

Fig 20: Identifying Assembly Tool - Turning Over Tool T10531/3
GWWN15-10976Courtesy of AUDI OF AMERICA, LLC

-- Install the lower timing chain cover. Refer to LOWER TIMING CHAIN COVER, REPLACING .

-- Install the engine support. Refer to ENGINE SUPPORT, REMOVING AND INSTALLING .

-- Install the vacuum pump. Refer to VACUUM PUMP, REMOVING AND INSTALLING .

-- Install the high pressure pump. Refer to HIGH PRESSURE PUMP, REMOVING AND INSTALLING .

-- Install the upper timing chain cover. Refer to TIMING CHAIN COVER, REMOVING AND INSTALLING, ENGINE WITH TWO CAMSHAFT ADJUSTERS .

There are additional procedures depending on the model. Refer to the appropriate Service Information .

After Removing or Replacing the Camshafts the Adaptation Values for the Chain Length must be Adapted Again.

-- Connect the Vehicle Diagnostic Tester.

-- Select Diagnostic  operating mode and Start diagnostics  .

-- Select the Select individual test  tab and select the following tree structure consecutively:

Tightening Specifications 

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