500SEC (140.070) V8-5.0L (119.970) (1993)
Water Pump: Service and Repair
Preparation
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Viscous fan clutch carrier removed. See: Radiator Cooling Fan/Fan Clutch/Service and Repair
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Harmonic balancer and drive belt removed. See: Engine
Removal and Installation
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Detach coolant hoses (4), (5) and (6), attach.
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Unbolt connection cover at top (2) with engine lifting eye (1), bolt on
Tighten to: 21 Nm.
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Replace gasket (2a).
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Model 210 With Secondary Air Injection: unbolt retaining plate with switchover valve for secondary air injection at coolant pump (3), bolt on.
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Unbolt coolant pump (3).
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Clean sealing surfaces.
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Replace gasket (3a).
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Install coolant pump (3) on, bolt on.
Tighten to: 21 Nm.
Pay attention to different bolt lengths, see bolt diagram illustration above.
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Check cooling system for leaks. See: Testing and Inspection
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Tighten the bolts of cover at top to coolant pump to: 21 Nm