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Remove/install |
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| 1 |
Switch off ignition |
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| 2 |
Remove air filter housing |
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AR09.10-P-1150SX |
| 3 |
Remove chain tensioner |
 Install new chain tensioner
. The previously installed chain tensioner must not be reinstalled because during removal, its pressure pin is pressed into the end position. The thrust pin latch prevents this return stroke. This would overstretch the timing chain on reinstalling. |
AR05.10-P-7800SX |
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Right-hand side |
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| 4 |
Remove camshaft adjuster for right exhaust camshaft (1) |
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AR05.20-P-7201SY |
| 5 |
Remove cap (26) |
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| 6 |
Detach center valve (7) |
Observe loosening direction.
Tightening of center valve (7) may only take place for a removed chain tensioner. Malfunctions of camshaft adjustment can occur otherwise. |
AR05.20-P-7201-06VA |
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*BA05.20-P-1009-02A |
| 7 |
Remove the right cylinder head cover |
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AR01.20-P-5014SY |
| 8 |
Mark timing chain relative to the camshaft adjuster (15) using color codes (25) |
Engine positioned at 40° crankshaft angle after ignition TDC.
Check position of intake camshaft (3) based on color coding (25). |
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| 9 |
Remove tensioning rail (24) |
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AR05.10-P-8127SX |
| 10 |
Remove center valve (7) and pulse wheel (11) |
Check dowel pin (18) and pin (19). If a dowel pin (18) or pin (19) is sheared off then this must be removed from camshaft adjuster (15).
Always replace pulse wheel (11). When tightening center valve (7) there is a risk that dowel pin (18) or pin (19) may shear off at pulse wheel (11).
Lubricate center valve (7) at contact surface with pulse wheel (11) before assembly.
Align dowel pin (18) on pulse wheel (11) with bore (20) in camshaft adjuster (15). |
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| 11 |
Remove timing chain from camshaft adjuster (15) and detach camshaft adjuster (15) forwards from intake camshaft (3) |
Lubricate contact surfaces to intake camshaft (3) and camshaft adjuster (15) before mounting camshaft adjuster (15).
Align color coding (25) on camshaft adjuster (15) and timing chain with each other. Align dowel pin (21) in the camshaft adjuster (15) with fitted bore (22) in intake camshaft (3). |
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Left-hand side |
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| 12 |
Remove camshaft adjuster for the left exhaust camshaft (2) |
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AR05.20-P-7201SY |
| 13 |
Remove cap (27) |
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| 14 |
Detach center valve (8) |
Observe loosening direction.
Tightening of the center valve (8) may only take place for a removed chain tensioner. Malfunctions of the camshaft adjustment can occur otherwise. |
AR05.20-P-7201-06VA |
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*BA05.20-P-1009-02A |
| 15 |
Remove left cylinder head cover |
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AR01.20-P-5014SX |
| 16 |
Mark timing chain relative to the camshaft adjuster (16) using color codes (25) |
Engine positioned at 40° crankshaft angle after ignition TDC.
Check position of intake camshaft (4) based on color coding (25). |
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| 17 |
Remove center valve (8) and pulse wheel (12) |
Check dowel pin (18) and pin (19). If a dowel pin (18) or pin (19) is sheared off then this must be removed from camshaft adjuster (16).
Always replace pulse wheel (12). When tightening center valve (8) there is a risk that dowel pin (18) or pin (19) may shear off at pulse wheel (12).
Lubricate center valve (8) at contact surface with pulse wheel (12) before assembly.
Align dowel pin (18) for pulse wheel (12) with fitted bore (20) in camshaft adjuster (16). |
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| 18 |
Remove timing chain from camshaft adjuster (16) and detach camshaft adjuster (16) towards the front from intake camshaft (4) |
Lubricate contact surfaces to intake camshaft (4) and camshaft adjuster (16) before the mounting camshaft adjuster (16).
Align color coding (25) on camshaft adjuster (16) and timing chain with each other. Align dowel pin (21) in camshaft adjuster (16) with fitted bore (22) in intake camshaft (4). |
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| 19 |
Install in the reverse order |
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Checking |
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Risk of accident
caused by vehicle starting off by itself when engine is running. Risk of injury
caused by contusions and burns during starting procedure or when working near the engine as it is running |
Secure vehicle to prevent it from moving by itself.
Wear closed and snug-fitting work clothes.
Do not touch hot or rotating parts. |
AS00.00-Z-0005-01A |
| 20 |
Conduct engine test run and check engine for leaks |
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