HOSE A. 0616789 - Caterpillar

At operating temperature, the engine coolant is hot and under pressure. Steam can cause personal injury. Check the coolant level only after the engine has been stopped and the fill cap is cool enough to touch with your bare hand. Remove the fill cap from the radiator slowly to relieve pressure. Cooling system conditioner contains alkali. Avoid contact with skin and eyes to prevent personal injury.
2. Release the pressure in the cooling system.3. Drain the coolant from the radiator until the level is just below the radiator top tank. 4. Loosen clamp (1), and disconnect upper radiator hose (3) from the radiator.5. Remove bolts (2), and remove upper and lower fan guards (5).6. Remove six bolts (4) that hold fan shroud (6) to the radiator. Put the fan shroud against the front of the engine. 7. Loosen six mounting bolts (7) that hold the fan assembly to the fan drive pulley. Remove fan (8), the spacer and mounting bolts as a unit. The following steps are for the installation of the fan assembly.8. Check the condition of the fan blades and the fan hub area. If any of the blades are damaged or if there are indications of cracks in the hub area, replace the fan.9. Install six mounting bolts (7) through fan (8) and the spacer. Put the fan, spacer and mounting bolts as a unit in position against the fan drive, and tighten the six mounting bolts.10. Put fan shroud (6) in position against the radiator, and loosely install six bolts (4) that hold it.11. Check the clearance between the fan blades and the fan shroud. The clearance should be the same at the top, bottom and sides of the shroud. If the clearance is not correct, reposition the fan shroud, and tighten the six mounting bolts that hold it.12. Reinstall the upper and lower fan guards (5).13. Connect upper radiator hose (3) to the radiator, and tighten the clamp that holds it to a torque of 5 N m (4 lb ft).14. Fill the cooling system with coolant to the correct level. See the Operation & Maintenance Manual for the correct filling procedure.