Perkins 415GM - How to Check the Impeller of the Raw Water Pump

Chapter 4 N39453
Page 50
How to check the impeller of the raw water pump
1. Ensure that the seacock is closed.
2. Release the four setscrews (H1) which fasten the end plate (H2) of the raw water pump and remove the
plate and ‘O’ ring (H3). When the end plate of the raw water pump is removed, some raw water will ow from
the pump.
3. Remove the rubber end cap (H4) and then pull the impeller from the shaft (I).
4. Clean the contact surfaces of the pump body and the end plate.
5. Inspect the rubber impeller for excessive wear or for damage and renew it, if necessary. Apply Spheerol
SX2 grease or liquid soap to the blades of the impeller and t the impeller into the housing with the blades
bent counter-clockwise (H). Fit the rubber end cap.
6. Gease a new ‘O’ ring (H3), insert into the pump body groove.
7. Fit the end plate (H2) and tighten the end plate screws.
8. Open the seacock.