To Remove

Remove CAMSHAFT COVER WITH GASKET
Remove TIMING COVER
Fit the crankshaft pulley.
Lower the car and zero the engine by turning the crankshaft in the direction of rotation of the engine until the marking on the crankshaft pulley is aligned with the marking on the timing cover. The cam lobes on cylinder 1 intake and exhaust camshafts should be pointing up/in. (A)

Fig 1: Identifying Crankshaft Rotation Direction
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Remove the chain tensioner (A). Use 83 96 129 OIL FILTER TOOL, B207, AND CAMSHAFT DRIVE CHAIN TENSIONER .

Fig 2: Removing Chain Tensioner
Courtesy of SAAB-SCANIA OF AMERICA, INC.
Remove the lock ring (A) from the chain tensioner and remove the piston.

Fig 3: Identifying Chain Tensioner And Piston
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Remove the plug (A) from the cylinder housing.

Fig 4: Removing Plug From Cylinder Housing, Upper Bolt To Timing Chain Guide & Upper Timing Chain Guide Rail
Courtesy of SAAB-SCANIA OF AMERICA, INC.
Remove the upper bolt (B) to the timing chain guide at the inlet side.
Remove the upper timing chain guide rail (C).
Remove the lower bolt to the chain guide (A). Detach the lower section of the chain.

Fig 5: Removing Lower Bolt To Chain Guide, Camshaft Pinions & Tensioner Guide
Courtesy of SAAB-SCANIA OF AMERICA, INC.
Remove the camshaft pinions (B). Use a wrench to grip the camshaft flats when the bolts are loosened. Lift up the chain.
Remove the tensioner guide (C) by lifting it up. Inspect the condition of the guide. Replace if necessary.