SEAL-RING 2108354 - Caterpillar

Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A - Loctite Nickel Anti-Seize Lubricant -
Hot engine components can cause injury from burns. Before performing maintenance on the engine, allow the engine and the components to cool.
Remove Left and Right hoods.
Remove Exhaust Flex Pipe.
Illustration 1 g06094141
Remove cable strap (3) and disconnect harness connector (5). Remove temperature sensor (1).
Remove clamp (6). Disconnect and set to the side diesel exhaust fluid lines (2) and harness connectors (4).
Illustration 2 g06090065
Disconnect clamp (9). Remove three bolts and washers (7). Remove clamp (8) and bracket (10).
Illustration 3 g06090083
Disconnect and remove ammonia sensor (11) and nitrogen oxide sensor ( exhaust pipe out ) (12). Position sensors (11) and (12) to the side.
Remove temperature sensor (13). Remove tube assembly (14).
Illustration 4 g06090150
Remove four bolts (16) and Catalyst (SCR) (15).
Illustration 5 g06090163
If necessary, remove seven nuts (18) and mount assembly (17).Install Procedure
Install catalyst ( SCR ) (15) in reverse order of removal.
Apply tooling (A) to the threads of temperature sensor (1) and temperature sensor (13).
Apply tooling (A) to the threads of ammonia sensor (11) and nitrogen oxide sensor (12).
Tighten temperature sensor (1) and (13) to a torque of 45 5 N m (33 4 lb ft).
Tighten ammonia sensor (11) and nitrogen oxide sensor ( exhaust pipe out ) (12) to a torque of 50 10 N m (37 7 lb ft).