5010198DP Mercruiser STERNDRIVE, Alpha Gen II (1.98:1)

3306 Engine Shown1. Drain the coolant from the radiator into a suitable container for storage or disposal. Remove the hose from between the radiator and the water pump.2. On 3306 Engines, remove clamps (1) and slide the hose off the water pump elbow.3. Loosen clamp (3) and remove switch (4) from the water pump elbow.4. Remove water pump elbow (2) and the gaskets from the engine.5. Remove bolts (5) and water pump (6) from the engine.Install Water Pump
3306 Engine Shown1. Put the O-ring seal and water pump (6) in position on the engine, and install bolts (5) to hold them.2. Install the gaskets and water pump elbow (2).3. Tighten clamp (3), and install switch (4) in the water pump elbow.4. On 3306 Engines, slide the hose into position on the water pump elbow, and install clamps (1).5. Install the hose between the radiator and the water pump.6. Fill the radiator with coolant to the correct level. See the Operation & Maintenance Manual.Disassemble Water Pump
Start By:a. remove water pump FLUID SPILLAGE CONTAINMENT Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the machine. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to "TOOLS AND SHOP PRODUCT GUIDE, NENG2500", for tools and supplies suitable to collect and contain fluids in Caterpillar machines. Dispose fluids according to local regulations and mandates. 1. Remove bolt (1) and the washer. Remove bearing (2) and gear (3) as a unit.2. Use Tooling (A), (C) and a press, and remove bearing (2) from gear (3). 3. Remove snap ring (4) with Tool (B). 4. Remove bolts (5), the washers and cover (6) from the water pump. 5. Loosen bolt (7) 6.4 mm (.25 in). Hit the bolt with a soft hammer to remove impeller (8) from the shaft.6. Remove the spring and seal assembly from the shaft. 7. Remove bearing (9) and shaft (10) as a unit. 8. Use Tooling (A), (C) and a press to remove bearing (9) from shaft (10). 9. Remove the ceramic ring and seal (11) from the housing. 10. Remove lip seal (12) from the housing with Tool (C).Assemble Water Pump
1. Install the lip seal in the water pump housing with Tool (A). The lip of the seal must be toward the bearings. Put clean engine oil on the lip of the seal. 2. Install shaft (1) in bearing (2) with a press. 3. Install shaft (1) and bearing (2) in the housing as shown. 4. Install snap ring (3) 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 (4) in position in the rubber seal. Use hand pressure and the tool (which is with the replacement ring) to install the ceramic ring. 6. Remove the spring from seal assembly (5). Use hand pressure and the tool (which is with the replacement ring) to install the seal assembly. Push seal assembly (5) on the shaft until it makes light contact with ceramic ring (4). 7. Install spring (6) as shown. Put impeller (7) in position on the shaft, and install the washer and bolt that hold it. Tighten the bolt to a torque of 38 1.4 N m (28 1 lb ft). 8. Put the gasket and cover (8) in position on the water pump housing, and install the washers and bolts (9) that hold them. 9. Install bearing (10) on gear (11) with a press. 10. Make an alignment of pins (12) on gear (11) and the holes in shaft (1). Put the gear and bearing in position on the shaft, and install the washer and bolt that hold them together.End By:a. install water pump