The locating pin -T40060- has a flat -2-, which facilitates its installation when the camshaft and cylinder head fixation holes are slightly shifted. First, insert the dowel pin so that the pin -1- is perpendicular to the camshaft axis. To achieve the correct position "TDC" Move the pin -1- 90°-arrow- so that it is perpendicular to the camshaft axis.
Risk of damage due to jumping of the camshaft timing chain. Turn the crankshaft only in the direction of engine rotation. Turn the crankshaft to position "TDC": The camshafts must be secured with pins -T40060-; The pin -arrow- in the locating pin -T40060- must be perpendicular to the axis of symmetry of the camshaft for cylinder bank 1 (right).
The pin -arrow- in the locating pin -T40060- must be perpendicular to the axis of symmetry of the camshaft for cylinder bank 2 (left).
Unscrew the screw plug -arrow-marks "TDC" from the top of the oil pan using a long Allen key with a ball head.
If necessary, tighten the fixing bolt -3242- to 20 Nm in the hole: turn the crankshaft -1- until the bolt is completely centered.
To protect against cuts, wrap the tip and cutting edge of a 3.3 mm drill with electrical tape. Press the left camshaft chain tensioner shoe -in the direction of the arrow- and lock the chain tensioner with a 3.3 mm diameter drill -pos. 1-. Risk of malfunction due to reversal of an already used camshaft drive chain. To reassemble, mark the direction of travel of the drive chain with an arrow and use paint for this. Remove locating pin -T40060- from both camshafts.
Unscrew bolt -3- and remove tensioner bar. Unscrew the bolts -1- of the damper bar and -2- of the camshaft chain drive sprocket. Remove the chain sprocket, damper bar and left camshaft drive chain.
To protect against cuts, wrap the tip and cutting edge of a 3.3 mm drill with electrical tape. Press the right camshaft chain tensioner damper bar -in the direction of the arrow- and lock the chain tensioner with a 3.3 mm diameter drill -pos. 1 -.
Risk of malfunction due to reversal of an already used camshaft drive chain. To reassemble, mark the direction of travel of the drive chain with an arrow and use paint for this. Unscrew the bolts -1 - of the chain tensioner, as well as -2- and -3- of the camshaft chain sprocket. Remove the chain sprocket, tensioner and right camshaft drive chain.
Installation
The crankshaft -1- is secured in position using a locking screw -3242- "TDC". The chain drive drive chain is installed. Replace bolts that were overtightened. Risk of damage to valves and piston crowns. When turning the camshaft, not one piston of the crankshaft should be in "TDC". Make sure that the camshafts of both cylinder heads are in position "TDC". The camshafts must be secured with pins -T40060-. The pin -arrow- in the locating pin -T40060- must be perpendicular to the axis of symmetry of the camshaft for cylinder bank 1 (right).
The pin -arrow- in the locating pin -T40060- must be perpendicular to the axis of symmetry of the camshaft for cylinder bank 2 (left). Remove locating pin -T40060- from both camshafts.
If the camshafts cannot be secured, their position can be adjusted using the adapter -T40061- by screwing the chain drive sprocket bolts into the camshaft.
Install the left camshaft chain with the camshaft chain sprocket, damper bar and tensioner bar. The longitudinal holes in the camshaft chain sprocket must be centered relative to the threaded holes of the camshaft. Tighten bolts -1 - and -3- of the damper bar and tensioner bar. Do not screw in both bolts -2- of the camshaft chain sprocket completely. The sprocket should turn on the camshaft, but should not warp. Secure left camshaft with locating pin -T40060-. The pin -arrow- in the dowel pin -T40060- must be parallel to the axis of symmetry of the camshaft chain drive. Remove the drill bit -4- from the hole; this releases the left chain tensioner.
Install the right camshaft drive chain along with the sprocket and chain tensioner. The longitudinal holes in the camshaft chain sprocket must be centered relative to the threaded holes of the camshaft. Tighten the chain tensioner bolts -1-. Do not fully screw in both camshaft chain sprocket bolts -2. The sprocket should turn on the camshaft, but should not warp. Secure the right camshaft with the locating pin -T40060-. The pin -arrow- in the dowel pin -T40060- must be parallel to the axis of symmetry of the camshaft chain drive. Remove the drill -3- from the hole; this releases the right chain tensioner.
Tighten right camshaft chain sprocket with adapter -T40062- and torque wrench to 20 Nm clockwise -arrow- and maintain pretension. Tighten bolts -1- and -2-. Remove adapter -T40062- and locating pin -T40060-. Tighten the remaining right camshaft chain sprocket bolts.
Tighten left camshaft chain sprocket with adapter -T40062- and torque wrench to 15 Nm clockwise -arrow- and maintain pretension. Tighten bolts -1- and -2-. Remove adapter -T40062- and locating pin -T40060-. Tighten the remaining left camshaft chain sprocket bolts.
Release retaining bolt -3242-.
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