FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM
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Car repair manuals for everyone.
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Mercedes Benz
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2003
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SL 55 AMG (230.474) V8-5.5L SC (113.992)
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Repair and Diagnosis
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Engine, Cooling and Exhaust
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Cooling System
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Auxiliary Water Pump
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Description and Operation
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Coolant Circulation Pump
Coolant Circulation Pump
Heating Water Circulation Pump
Task
The heating water circulation pump (M13) serves to maintain a constant flow of hot water through the heat exchanger in the event of low engine speeds and residual engine heat utilization.