Sailing Britaly · video

What this video covers

Water leaking from the witness holes of a Volvo Penta raw water pump indicates a failed lip seal.Watch Replacing the seal does not require removing the pump from the engine.0:59 To extract the old seal, remove the pump cover and impeller, then use a flat-bladed screwdriver to pry the seal out by rotating the tool against the internal plastic spacer.2:11 The standard replacement seal for this application measures 12mm internal diameter, 24mm external diameter, and 7mm thickness.3:05 These parts are available from industrial seal stockists at a lower cost than branded marine replacements.2:39 As a temporary emergency repair, a custom-sized O-ring cut from a DIY O-ring kit and placed behind the seal housing can compress the existing seal against the shaft to stop leaks.5:08

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