Camshaft Timing Chain, Removing From Camshafts: Installing
- Tightening specifications, refer to OVERVIEW - CAMSHAFT TIMING CHAINS .
Replace the bolts that were tightened with an additional turn.
Risk of damaging valves and piston crowns.
- If camshafts are rotated, crankshaft may not rest with any piston at "TDC".
- The timing mechanism drive chain is installed, refer to TIMING MECHANISM DRIVE CHAIN, REMOVING AND INSTALLING .
- Crankshaft -1- secured in "TDC" using Crankshaft Locking Pin T40069.
- Secure the camshafts in the "TDC" position on both cylinder heads using the Camshaft Clamp T40133 -arrows- (25 Nm).
The cylinder head for cylinder bank 2 (left) is shown in the illustration.
The engine could be damaged.
- The camshaft chain sprockets must only be installed according to the following work steps:
- Install the camshaft chain sprockets according to the marks applied during removal.
- When mounting the camshaft chain sprockets, make sure that the pins on the camshaft chain sprockets engage in the holes on the camshafts in direction of -arrows-.
- Turn the camshaft chain sprocket on the camshaft counterclockwise until it stops in direction of -arrow-.
- The marking point -1- must align with the adjustment window -2-.
The engine could be damaged.
- The camshaft adjuster must only be installed according to the following work steps:
- Install the camshaft adjuster according to the marks applied during removal.
- The groove -1- in the camshaft adjuster must align with the adjustment window -2-.
-- Mount the left camshaft timing chain onto the drive chain sprocket, install the camshaft adjuster and camshaft chain sprocket and install the bolts -1- and -2- loosely.
- The camshaft adjuster and the camshaft chain sprocket must be able to still be rotated on camshaft and must not tip.
-- Remove the Locking Pin T40071.
-- Install the camshaft adjuster on the right cylinder head according to the markings applied during removal.
-- Mount the right camshaft timing chain onto the drive chain sprocket, install the camshaft adjuster and camshaft chain sprocket and install the bolts -1- and -2- loosely.
- The camshaft adjuster and the camshaft chain sprocket must be able to still be rotated on camshaft and must not tip.
-- Remove the Locking Pin T40071.
-- Mount the Wrench - Pin Type3212 onto the camshaft chain sprocket for the right exhaust camshaft.
-- Have a second technician hold the camshaft timing chain tensioned by pressing on the camshaft sprocket in the direction of -arrow-.
-- Tighten the bolts as follows while the camshaft chain sprocket is still held under tension.
| Step | Bolt | Tightening specification |
|---|---|---|
| 1. | to the exhaust camshaft 80 Nm | |
| 1. | -1- | to the intake camshaft 80 Nm |
For Camshaft Adjusters with Three Notches
-- Position the Wrench - Camshaft T40269 on the camshaft adjuster for the left intake camshaft.
-- Position the Torque Wrench 1332 40-200Nm VAG1332 with the Torque Wrench 1332 Insert - Open Ring Wrench - 24mm VAG1332/9 on the Wrench - Camshaft T40269.
-- Have a second technician hold the camshaft timing chain tensioned to approximately 40 Nm by pressing the Torque Wrench 1332 40-200Nm VAG1332 in the direction of -arrow-.
For Camshaft Adjusters with Four Notches
-- Position the Camshaft Adjuster Key T40079 on the camshaft adjuster for the left intake camshaft.
-- Position the Torque Wrench 1332 40-200Nm VAG1332 with the Torque Wrench 1332 Insert - Open Ring Wrench - 24mm VAG1332/9 on the Camshaft Adjuster Key T40079.
-- Have a second technician hold the camshaft timing chain tensioned to approximately 40 Nm by pressing the Torque Wrench 1332 40-200Nm VAG1332 in the direction of -arrow-.
-- Have a second technician hold the camshaft timing chain tensioned by pressing on the counterhold tool in the direction of -arrow-.
Continuation for All:
-- Tighten the bolts as follows while the camshaft adjuster is still held under tension.
| Step | Bolt | Tightening specification |
|---|---|---|
| 1. | -1- | to the exhaust camshaft 80 Nm |
| 1. | to the intake camshaft 80 Nm |
-- Tighten the camshaft adjuster bolts and the camshaft chain sprocket on the left cylinder head as follows:
| Step | Bolt | Tightening Specification |
|---|---|---|
| 2. | -1- | To the exhaust camshaft final tightening specification, refer to -item 2- Bolt (See Figure) |
| 2. | -2- | To the intake camshaft final tightening specification, refer -item 1- Bolt (See Figure) |
-- Tighten the camshaft adjuster bolts and the camshaft chain sprocket on the right cylinder head as follows:
| Step | Bolt | Tightening Specification |
|---|---|---|
| 2. | -1- | To the intake camshaft final tightening specification, refer to -item 3- Bolt (See Figure). |
| 2. | -2- | To the exhaust camshaft final tightening specification, refer to -item 1- Bolt (See Figure) |
-- Remove the Camshaft Clamp T40133 on both cylinder heads -arrows-.
The cylinder head for cylinder bank 2 (left) is shown in the illustration.
-- Remove the Crankshaft Locking Pin T40069.
-- Using the Crankshaft Socket T40058 and a ring wrench, turn the crankshaft two turns in the direction of engine rotation -arrow- until it is back at "TDC".
If it is accidentally rotated beyond "TDC", rotate it back approximately 30° and set it to "TDC" again.
- The threaded holes -arrows- in the camshafts must face upward.
-- Install the Camshaft Clamp T40133 in both cylinder heads and tighten -arrows- to 25 Nm.
-- Install the Crankshaft Locking Pin T40069 directly in the hole.
- The Crankshaft Locking Pin T40069 must engage in the locating hole in the crankshaft -1-, otherwise repeat the adjustment.
-- Remove the camshaft locating pins on both cylinder heads.
-- Remove the crankshaft holder.
Installation is performed in reverse order of removal, while noting the following:
-- Install the locking bolt "TDC" mark crankshaft, refer to Fig 20.
-- Install the A/C compressor, refer to A/C COMPRESSOR, REMOVING AND INSTALLING ON BRACKET .
-- Install the engine oil cooler, refer to ENGINE OIL COOLER, REMOVING AND INSTALLING .
-- Install the lock carrier brace, refer to LOCK CARRIER .
-- Install the ribbed belt, refer to RIBBED BELT, REMOVING AND INSTALLING .
-- Install the noise insulations, refer to OVERVIEW - NOISE INSULATION .
-- Install the cylinder head covers. For the left side, refer to LEFT CYLINDER HEAD COVER, REMOVING AND INSTALLING and for the right side, refer to RIGHT CYLINDER HEAD COVER, REMOVING AND INSTALLING .
-- Install the left and right timing chain covers, refer to LEFT AND RIGHT TIMING CHAIN COVERS, REMOVING AND INSTALLING .