Sprinter 2500 V6-3.0L DSL Turbo VIN 45 (2007)
Power Steering Pump: Testing and Inspection
DIAGNOSIS AND TESTING - PUMP LEAKAGE
The pump is serviced as an assembly and should not be disassembled. The plastic pump reservoir and the reservoir O-rings can be replaced.
Check for leaks in the following areas:
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Pump shaft seal behind the pulley
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Pump to reservoir O-ring
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Reservoir cap
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Pressure and return lines
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Flow control valve fitting