E 420 (210.072) V8-4.2L (119.985) (1997)
Timing Cover: Service and Repair
Front Covers at Top, Removal and Installation
Preceding work:
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Cylinder head covers removed. See: Cylinder Head Assembly/Valve Cover/Service and Repair
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Poly V-belt removed. See: Drive Belts, Mounts, Brackets and Accessories/Drive Belt/Service and Repair
Procedure:
Left front cover (30a) on version with power steering pump: unbolt power steering pump with supporting plate (11). Tighten to 25 Nm on
reassembly
NOTE:
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This is done by removing bolt at front (2) and bolts at rear (1).
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When installing bolt at front (2), coat with sealant 002 989 47 20 10.
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If tandem pump is fitted, pump remains installed; unscrew bottom left bolt for front cover with extended hexagon socket bit.
Right front cover with secondary air injection: unbolt secondary air injection valve at air pump support, push to the side, bolt on.
Cover on either/both side(s)
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Connector of camshaft adjuster solenoid (Y49): unplug, plug in.
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Unbolt and remove front cover (30) and (30a).
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Clean sealing surfaces.
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Coat contact surfaces of front cover (30) and (30a) to cylinder head with sealant 002 989 47 20 10.
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Coat bolts (28) and (29) with sealant 002 989 47 20 10.
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Install front covers (30) and (30a). Pay attention to dowel pins. Tighten to 25 Nm.
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Remainder of installation is reverse of removal procedure. Observe notes and tightening specifications.
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Run engine and check for leaks.
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Tightening torques:
Bolts of front covers 25 Nm