INSTALLING
- Tightening specification (Scheme 181)
Note. Replace seals and sealing rings. Replace bolts that are tightened to the specification.
| CAUTION | Risk of contaminating lubricating system and bearing. Cover open parts of engine. |
| WARNING | Danger of eye injury. Wear protective goggles. |
Using a rotating plastic brush, remove any remaining sealant from the cylinder head and guide frame.
Clean sealing surfaces, must be free of oil and grease.
Oil running surfaces of both camshafts.
Place the camshafts in the cylinder head, being careful of their position so the guide frame can be laid on top without tension.
Scheme 204
- Intake camshaft
- Exhaust camshaft
- Groove on the end of the shaft must lie as shown in illustration.
Scheme 205
- Exhaust camshaft
- Intake camshaft
- Groove on the end of the shaft must lie as shown in illustration.
Scheme 206
Check the location of the compressor ring ends.
- The compression ring ends -1 and 2- must face upward or downward, and must never face sideways.
Note. Note the expiration date of the sealing compound.
Cut the tube nozzle at the front marking (nozzle diameter approximately 2 mm).
Scheme 207
Lay the seal -2- in the groove on the guide frame.
Scheme 208
| CAUTION | Risk of contaminating camshaft bearing with excess sealant. Do not apply sealant beads thicker than indicated. |
Apply sealant beads -1, 3 and 4- to the clean guide frame sealing surfaces as shown in the illustration.
- Thickness of sealant beads: 2.5 mm.
Note. The guide frame must be installed within 5 minutes after applying the sealant.
Place the guide frame on the cylinder head.
Note. Ensure camshafts can be inserted in guide frame axial bearing without force.
Insert the T40116 in the guide frame and cylinder head.
Scheme 209
Tighten the guide frame bolts. (Scheme 181)
Note. The sealant must harden for approximately 30 minutes after installing the guide frame.
Drive in the sealing plugs -arrows- until they are flush.
Scheme 210
Remove the T40116 with the impact puller T10133/3.
Scheme 211
Rotate intake camshaft to "TDC" and tighten camshaft adjuster screw -2- on camshaft with a socket SW 24 -1- inserted between.
Scheme 212
Note. When tightening the bolt, use pliers to counterhold the socket.
Position a lever or ratchet with the T10035 on the bolt and turn the camshaft until the threaded hole for the T40070 faces up.
Then install the T40070 loosely on the intake camshaft.
- The T40070 is correctly positioned when the holes for the cylinder head bolts remain free.
Change the camshaft adjuster bolt -2- and the 24 mm socket -1- to the exhaust camshaft.
Scheme 213
Turn the exhaust camshaft until the threaded hole for the T40070 faces up.
At the same time, position a 24 mm open end wrench on the T40070 and turn the T40070 against the exhaust camshaft -arrow-.
Install the T40070 on the exhaust camshaft by hand to prevent damage to the threads (a second technician is needed).
Tighten the T40070 to 25 Nm -arrows-.
Turn the crankshaft to "TDC" in direction of engine rotation -arrow-.
Scheme 214
Install the 3242 in the hole and tighten to 20 Nm. Turn the crankshaft -1- back and slightly to completely center the bolt, if necessary.
Scheme 215
Install in reverse order of removal paying attention to the following
Install the high pressure pump. Refer to REMOVAL AND INSTALLATION .
Position the camshaft timing chain on the camshafts CAMSHAFT TIMING CHAINS .
| CAUTION | Risk of damaging valves and piston heads after working on the valve train. The motor must not be started for about 30 minutes after installing camshafts because the hydraulic equalization elements must seat themselves. To ensure valves do not strike pistons when starting, carefully rotate engine at least 2 full revolutions. |
- The transmission is removed. Refer to «REMOVAL AND INSTALLATION»(/audi/s5/i-2007-2011/remont/transmission-control-systems/#controls-housing-manual-transmission-0b4-awd-coupe) or «REMOVAL AND INSTALLATION»(/audi/s5/i-2007-2011/remont/transmission-control-systems/#controls-housing-automatic-transmission-0b6-awd-coupe) .
Remove timing chain lower cover. Refer to LOWER TIMING CHAIN COVER .
Remove the camshaft timing chains from the camshafts. Refer to CAMSHAFT TIMING CHAINS .
Scheme 216
| CAUTION | If the running direction is reversed on a used camshaft timing chain, it could be destroyed. Paint arrows to mark the timing chain running direction so it can be installed again. |
Remove bolts -1 and 2- and remove the left chain tension and left camshaft timing chain.
Remove bolts -1 and 2- and remove the right chain tension and right camshaft timing chain.
Scheme 217
- Tightening specification, refer to «CAMSHAFT TIMING CHAINS OVERVIEW»(/audi/s5/i-2007-2011/remont/mechanical/#42l-cylinder-head-valvetrain-engine-codes-caua-coupe) .
Note. If the tensioning element was removed from the chain tensioner, then the installation position must be noted: Hole in housing floor faces toward chain tensioner, piston faces toward tensioning rail. Replace bolts that are tightened to the specification. Replace the seals
| CAUTION | Risk of damaging valves and piston crowns. If the camshafts are rotated, crankshaft may not rest with any piston at "TDC". |
Press the guide rails for the left or right camshaft timing chain tensioner in -arrow- as far as the stop and secure the chain tensioner with a T40071.
Scheme 218
Clean the oil strainer -2- in both chain tensioners if necessary.
Scheme 219
Position a new seal -3- on the rear of the chain tensioner -1-.
Insert the chain tensioner on the left cylinder head and position the camshaft timing chain according to the markings made during removal, as shown in the illustration.
Fasten bolts -1 and 2-.
Insert the chain tensioner on the right cylinder head and position the camshaft timing chain according to the markings made during removal, as shown in the illustration.
Fasten bolts -1 and 2-.
Install in reverse order of removal paying attention to the following
Position the camshaft timing chain on the camshafts INSTALLING .
Install timing chain lower cover. Refer to LOWER TIMING CHAIN COVER .