CAP AS-BEARING 1540389 - Caterpillar

Start By:
Remove the exhaust elbow.
Personal injury or death may result from failure to adhere to the following procedures.Fuel leaked or spilled onto hot surfaces or electrical components can cause a fire.Clean up all leaked or spilled fuel. Do not smoke while working on the fuel system.Turn the disconnect switch OFF or disconnect the battery when changing fuel filters.
Personal injury can result from hot coolant, steam and alkali.At operating temperature, engine coolant is hot and under pressure. The radiator and all lines to heaters or the engine contain hot coolant or steam. Any contact can cause severe burns.Remove cooling system pressure cap slowly to relieve pressure only when engine is stopped and cooling system pressure cap is cool enough to touch with your bare hand.Do not attempt to tighten hose connections when the coolant is hot, the hose can come off causing burns.Cooling System Coolant Additive contains alkali. Avoid contact with skin and eyes.
Hot engine components can cause injury from burns. Before performing maintenance on the engine, allow the engine and the components to cool.
Drain the coolant. Refer to Operation and Maintenance Manual, "Cooling System Coolant (ELC) - Change" for the correct draining and filling procedure.
Illustration 1 g03865720
Remove bolts (1) and cover (2).
Illustration 2 g06004716
Remove all clips (4). Disconnect soot sensors (3) and (5).
Illustration 3 g06004751
Disconnect harness assembly (6). Disconnect hose assemblies (7), (8), and (9).
Illustration 4 g06004914
Remove bolt (10) and reposition hoses (11).
Illustration 5 g06004839
Illustration 6 g06008586
Attach a suitable lifting device to clean emissions module assembly (12). The weight of clean emissions module assembly (12) is approximately 160 kg (350 lb).
Remove mounting bolts (13) and clean emissions module assembly (12).
Illustration 7 g06008613
Disconnect harness assembly (14).
Illustration 8 g06008633
Disconnect harness assembly (15).
Illustration 9 g06008661
Attach a suitable lifting device to clean emissions module (16). The weight of clean emissions module (16) is approximately 109 kg (240 lb). Remove bolts (17) and clean emissions module (16).
Illustration 10 g06008716
Disconnect nitrogen oxide sensors (19). Remove bracket assembly (18).Installation Procedure
Install clean emissions module (16) in the reverse order of removal.
Apply Tooling (A) to the threads of nitrogen oxide sensors (19).
Tighten nitrogen oxide sensors (19) to a torque of 50 10 N m (37 7 lb ft).
Tighten soot sensors (3) and (5) to a torque of 1.2 0.2 N m (10.6 1.8 lb in).