HOSE AS 3904978 - Caterpillar

Removal Procedure
Table 1
Required Tools    
Tool    Part Number    Part Description    Qty    
A     1U-6396     O-Ring Assembly Compound     -    Start By:
Remove the water temperature regulator housing. Refer to Disassembly and Assembly, "Water Temperature Regulator Housing - Remove".
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
Note: Put identification marks on all hoses, on all hose assemblies, on all wires, and on all tube assemblies for installation purposes. Plug all hose assemblies and all tube assemblies. This helps to prevent fluid loss, and this helps to keep contaminants from entering the system.
Drain the cooling system coolant. Refer to Operation and Maintenance Manual, "Cooling System (ELC) Coolant - Change" for the correct procedure. Refer to Operation and Maintenance Manual, "Capacities - Refill" for the capacity of the cooling system.
Illustration 1 g02160662
Remove tube assemblies (1). Remove elbows (2) .
Illustration 2 g01852435
Remove bolts (3) and remove the water pump cover (4) .
Illustration 3 g01852493
Remove two bolts and insulation (5) .
Remove bolts (6) and remove water pump (7) .Installation Procedure
Note: Check the O-ring seals, the gaskets, and the seals for wear or for damage. Replace the components, if necessary.
Install the water pump in reverse order.
Apply Tooling (A) on all O-ring seals prior to installation.