45710 Mercruiser "O" RING, REVERSE LOCK VALVE

3. Remove the bolts and retainers from both ends of tube (1) and remove tube (1).4. Remove the bolts and remove damper guard (2). 4. Remove eight bolts (3) and ring (4). 5. Remove three bolts (6) and remove housing (5). 6. Remove four bolts (7) securing the water pump to the water line adapter. 5. Fasten a hoist to water pump (8). Remove four bolts (9) remove and water pump (8). The weight of water pump (8) is 27 kg (60 lb). Pull the water pump straight out of the front housing to disengage the pump drive shaft. Installation of the water pump is accomplished in the exact reverse order from removal.6. Install a new O-ring seal on the rear side of the water pump and lubricate with clean engine oil. Make sure that the gasket is in position on the water line adapter.7. Make sure when installing the water pump that the splines in the pump shaft are correctly engaged with the pump drive splines.8. If necessary, make replacements to the O-ring seals on each end of the pipe (2) and put clean engine oil on the seals.Disassemble Water Pump
Start By:a. remove water pump 1. Remove elbow (1) from housing assembly (2). Remove the O-ring seal from elbow (1). 2. Remove O-ring seal (5) from the back of housing assembly (2).3. Remove washer (4) that holds shaft assembly (3) in housing assembly (2). 4. Remove cover (6) from housing assembly (2) by removing three bolts. Remove the O-ring seal from cover (6). 5. Loosen nut (8) and the washer that hold impeller (7) to the pump shaft. Use tooling (A) to loosen impeller (7) from the end of the pump shaft. Remove tooling (A), nut (8), the washer and impeller (7) from the pump shaft and housing assembly (2). 6. Remove spring (10) from seal assembly (9) and shaft assembly (3).7. Use a soft faced hammer and push shaft assembly (3) out of seal assembly (9) and housing assembly (2). Remove seal assembly (9) from housing assembly (2). 8. Remove ceramic seal (11) from the rubber ring. Remove the rubber ring from housing assembly (2). 9. Remove seal (12) from the back of housing assembly (2).Assemble Water Pump
1. If necessary, make a replacement of the two filters in the pump housing at location (13).2. If necessary, make a replacement of plug (14) and the seal.3. Use tooling (A) to install the seal in the housing assembly. Make sure the lip of the seal is toward the outside as shown. Put clean engine oil on the lip of the seal. 4. Install shaft assembly (3) in housing assembly (2). Install washer (4) and the bolts to hold shaft assembly (3) in position. Install O-ring seal (5) on the back of housing assembly (2).
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.
Typical Example5. Put ceramic seal (11) in position in the rubber ring. Use hand pressure and the tool (which is with the replacement seal) to install the ceramic seal.
Typical Example6. Remove the spring from seal assembly (9). Use hand pressure and the tool, (which is with the replacement seal), to install the seal assembly. Push the seal assembly on the shaft until the seal faces make light contact.
Typical Example7. Install spring (10) on the carbon seal assembly.8. Put impeller (7) in position on the pump shaft as shown. 9. Install the washer and nut (8). Tighten nut (8) to a torque of 200 25 N m (150 18 lb ft). 10. Make sure the studs for cover (6) are tightened in the pump housing. Tighten the studs to a torque of 27 4 N m (20 3 lb ft).11. Put clean engine oil on O-ring seal (15) and install it on cover (6). Put cover (6) in position and install the nuts to hold it to the pump housing. 12. Put clean engine oil on the O-ring seal and install it in elbow (1). Put elbow (1) in position on housing assembly (2) and install the bolts to hold the unit together.13. Put clean engine oil on the O-ring seal and install it on the back of housing assembly (2).End By:a. install water pump