FENDER AS-REAR 2435857 - Caterpillar

Removal Procedure
Table 1
Required Tools    
Tool     Part Number     Part Description     Qty    
A     -     Snap-On S6176 Socket     1    
B     -     Loctite Nickel
Anti-Seize Compound     1    
Hot engine components can cause injury from burns. Before performing maintenance on the engine, allow the engine and the components to cool.
Open the hood.
Illustration 1 g03812616
Illustration 2 g03812619
Use Tooling (A) to remove nitrogen oxide sensor (2) from the clean emissions module. Cut cable straps (1).
Cut cable straps (3) . Disconnect harness assembly (6). Remove bolts (4). Remove module (5) and nitrogen oxide sensor (2). Repeat for the other nitrogen oxide sensor.Installation Procedure
Install nitrogen oxide sensor (2) in the reverse order of removal.
Lightly lubricate the threads of nitrogen oxide sensor (2) with Tooling (B) .Note: If a new nitrogen oxide sensor is being installed do not apply Tooling (B) to the threads. New nitrogen oxide sensors should have the required lubricant already on the threads.
Use Tooling (A) to install nitrogen oxide sensor (2) into the clean emissions module. Tighten nitrogen oxide sensor (2) to a torque of 50 N m (37 lb ft).