477770 Volvo.Penta Coolant pump

At operating temperature, the engine coolant is hot and under pressure. The radiator and all lines to heaters or the engine contain hot water or steam. Any contact can cause severe burns. Look at the sight gauge to check the coolant level. The coolant level should be in the green range. If necessary, remove the fill cap only after the engine has been stopped and the cap is cool enough to remove with your bare hand. Remove the cooling system fill cap slowly to relieve pressure. Cooling system condition contains alkali that can cause personal injury. Avoid contact with the skin and eyes and do not drink. Allow cooling system components to cool before draining.
Put identification on all lines, hoses, wires and tubes for installation purposes. Cap and plug all lines, hoses and tubes to prevent foreign material from entering the system. 1. Drain the coolant from the cooling system in a suitable container for storage or disposal. The capacity of the system is 136 liter (36 U.S. gal.).2. Disconnect three hose assemblies (2) from the water pump cover.3. Disconnect hose (1) to the water pump cover. 4. Loosen two hose clamps (4) and position hose (3) away from the water pump cover.5. Remove two bolts (5) from the upper flange.6. Remove five bolts (6) and remove the water pump cover and the gasket. 7. Remove four bolts (8) from the lower flange.8. Remove four nuts and one bolt (7) from the water pump flange and remove the water pump. Install in the reverse order. 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 hydraulic system and the cooling system.9. Fill the cooling system with coolant to the correct level.End By:a. install V-beltsDisassemble & Assemble Water Pump
Start By:a. remove water pump The water pump seal can be replaced without removing the water pump from the engine.An intermittent leakage of a small amount of coolant from the hole in the water pump housing is not an indication of a water pump seal failure. This is required to provide lubrication for the seal. Replace the water pump seal only if a large amount of leakage or a constant flow of coolant is observed draining from the water pump housing. 1. Remove O-ring seal (3) from adapter (4). Remove the adapter from housing (7). Remove the O-ring seal from the outside of the adapter.2. Remove bolt (1) and washer (2). Use Tooling (A) to remove impeller (6) from shaft (13).3. Remove spring and seal (5) from the shaft.4. Remove four bolts (16) from retainer (12) that hold the shaft assembly to the pump housing. Remove O-ring seal (18) from housing (7).5. Remove gear and shaft assembly (17) from the housing. Remove bolt (15), retainer (14), and retainer (12) from the shaft assembly.6. Use a press to remove shaft (13) from the gear. Remove bearing (9), spacer (10), and bearing (11) from the shaft.7. Remove lip-type seal (8) from the housing.8. Turn the housing over, and remove ceramic ring (20) and seal (19) from the housing. The following steps are for the assembly of the water pump.9. Use 6V-1541 Quick Cure Primerand clean shaft (13) and the seal counter bore in the pump housing.10. Install bearing (9), spacer (10), and bearing (11) on shaft (13).11. Put retainer (12) and gear (17) on the shaft assembly. Install retainer (14) and bolt (15) on the shaft.12. Use Tooling (B) to install lip-type seal (8) in housing (7). Install seal with the lip toward the inside of the housing. Put a small amount of clean engine oil on the lip of the seal.13. Install a new O-ring seal (18) on the housing.14. Put gear and shaft assembly (17) in position in the housing. Install bolts (16) that hold retainer (12) to the housing.
Clean water only is permitted for use as a lubricant for assistance at installation. 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.
15. Put ceramic ring (20) in position in seal (19). Use hand pressure and Tool (C) to install the ceramic ring in the housing.
Avoid contaminating the seal faces with grease or oil. Also, avoid stretching the rubber seal during installation.
The carbon seal assembly must rotate with the water pump shaft after installation.16. Separate spring from seal (5). Use hand pressure and Tool (C) to install the seal on the shaft of gear and shaft assembly (17). Push the seal on the shaft until the seal faces make light contact. Install the spring on the shaft.17. Put impeller (6) in position on the shaft. Install washer (2) and bolt (1) that hold the impeller. Tighten the bolt to a torque of 39 3 N.m (29 2 lb.ft.).18. Install the O-ring seal on the outside diameter of adapter (4). Put a small amount of clean SAE 30Woil on the O-ring seal.19. Install O-ring seal (3) on the adapter.20. Put adapter (4) in position on the housing.End By:a. install water pump