805786 Mercruiser SCREW

3. Loosen clamps (1), and remove and hose (2).4. Loosen clamps (3), and slide hose (4) down on the tube.5. Loosen clamps (6), and slide hose (8) down on the tube.6. Remove fan guards (5).7. Remove three bolts (7).8. Remove the water pump. The following steps are for the installation of the water pump. Check all the O-ring seal and the gasket. If damaged, use new parts for replacement.9. Be sure O-ring seal is in place on the water pump. Put clean oil on the O-ring seal. Put gasket (9) in place on bonnet (10). 10. Put the water pump in position on the engine, and install three bolts (7) in order to hold the water pump in place.11. Install hose assembly (4), and tighten clamps (3).12. Install hose assembly (2), and install clamps (1).13. Slide hose (8) up, and tighten clamps (6).14. Install fan guard (5).15. Fasten a hoist, and install the hood over the engine. Refer to the Topic "Lubricant Viscosities and Refill Capacities" in the "Operation and Maintenance Manual" for the proper filling procedure and the proper levels for the cooling system.Disassemble Water Pump
Start By:a. remove water pump 1. Remove bolt (15) and the washer. Remove bearing (12) and gear (10) as a unit.2. Use Tooling (A), (C) and a press, and remove bearing (12) from gear (10).3. Remove snap ring (8) with Tool (B).4. Remove two bolts (1). The washers, cover (14) and gasket (2) from water pump housing (18).5. Loosen bolt (13) approximately 6.4 mm (.25 in). Hit the bolt with a soft hammer to loosen impeller (16) from shaft (9).6. Remove bolt (13), washer (11), impeller (16), spring (3) and seal assembly (4) from shaft (9).7. Remove bearing (7) and shaft (9) as a unit.8. Use Tooling (A), (C) and a press to remove bearing (7) from shaft (9).9. Remove ceramic seal (5) and seal (17) from water pump housing (18).10. Use Tool (C) to remove lip seal (6) from the water pump housing.Assemble Water Pump
1. Install lip seal (6) in water pump housing (18) with Tool (C). The lip of the seal must be toward the bearings. Put clean engine oil on the lip of the seal.2. Install shaft (9) in bearing (7) with a press.3. Install shaft (9) and bearing (7) as a unit in water pump housing (18).4. Install snap ring (8) with Tool (B).
Clean water only is permitted for use as a lubricant for assembly. Do not damage or put hands on the wear surface of the carbon ring or the ceramic ring. Install the ceramic ring with the smoothest face of the ring toward the carbon seal assembly.
5. Put ceramic ring (5) in position in seal (17). Use hand pressure and Tool (D) to install the ceramic ring.6. Remove spring (3) from seal assembly (4). Use hand pressure and Tool (D) to install the seal assembly. Push seal assembly (4) on shaft (9) until it makes light contact with ceramic ring (5).7. Install spring (3) on seal assembly (4). Put impeller (16) in position on shaft (9), and install washer (11) and bolt (13) that hold it. Tighten bolt (13) to a torque of 38 1.5 N m (28 1 lb ft).8. Put gasket (2) and cover (14) in position on water pump housing (18), and install the two washers and bolts (1) that hold them.9. Install bearing (12) on gear (10) with a press.10. Position gear (10) and bearing (12) as a unit on shaft (9). Install the washer and bolt (15) that hold them together. Tighten bolt (15) to a torque of 97 7 N m (72 5 lb ft).End By:a. install water pump