21389909 Volvo.Penta Heat insulation

2. Remove clip (1).3. Remove the bolts that hold bonnet (3) to the water pump and elbow (2), and remove the bonnet. 4. Remove tube (4) from the engine. Cap or plug all openings immediately.5. Remove the bolts that hold cover (5) to the water pump and elbow (6), and remove the cover.6. Remove the O-ring seal from the rear of the water pump. 7. Remove two nuts (9) and five bolts (8) that hold the water pump to the timing gear plate, and remove water pump (7).8. Remove the O-ring seal from the front of the water pump.Install Water Pump
1. Inspect the seals for wear or damage, and replace if needed. Put clean engine oil on the seals.2. Put the O-ring seal on the front of the water pump. 3. Put water pump (1) in position on the timing gear plate, and install the bolts and nuts that hold it. Make sure that the water pump gear and the gear in the front cover are in alignment. 4. Put the O-ring seal in position on the rear of the water pump.5. Put the gasket and cover (3) in position on elbow (4), and install the bolts that hold the cover to the elbow and water pump.6. Install tube (2) on the engine. 7. Make sure the O-ring seal is in place on adapter (6).8. Install the gaskets on the water pump and elbow (5).9. Put bonnet (7) in position on the adapter, and install the bolts that hold the bonnet to the water pump and elbow (5).10. Install the clip that holds the bonnet to the oil cooler.11. Fill the cooling system to the correct level. See the Operation Maintenance Manual.Disassemble Water Pump
Start By:a. remove water pump FLUID SPILLAGE CONTAINMENTCare 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. 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 Tool (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 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 Primer and clean shaft (13) and the seal counter bore in the pump housing10. 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 Tool (B) to install lip 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 30 oil on the O-ring seal.19. Install O-ring seal (3) on the adapter.20. Put adapter (4) in position on the housing. For more detailed information regarding the water pump, see the topic "Water Pump" in the Specifications Manual.End By:a. install water pump