Catalyst (SCR) – Remove
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Start By:
a. Remove the temperature sensor for the
catalyst inlet. Refer to Disassembly and
AssemblyTemperature Sensor (Catalyst Inlet) – Remove and Install for the correct procedure
WARNING ：
Hot engine components can cause injury from burns. Before performing maintenance on the en-
gine, allow the engine and the components to
WARNING：
Wear goggles, gloves, protective clothing, and a National Institute for Occupational Safety and Health (NIOSH) approved P95 or N95 half-face respirator when handling a used Diesel Particu-
late Filter or Catalytic Converter Muffler. Failure to do so could result in personal injury.
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1. Disconnect the Original Equipment Manufacturer (OEM) exhaust system from connection (3) on Selective Catalyst Reduction (SCR) (5). Refer to the OEM for the correct procedure.
2. Loosen clamp assembly (1) for flexible exhaust pipe (2) to allow removal to SCR catalyst (5).
3. Disconnect clamps (4) from SCR catalyst (5).
4.Attach Tooling (A) and a suitable lift equipment to SCR catalyst (5). The weight of SCR catalyst is approximately 53 kg (117 lb). Ensure that the
SCR catalyst is correctly balanced.
5. Use the suitable lift equipment to remove SCR
catalyst (5). Ensure that flexible exhaust pipe (2) is not strained as the SCR catalyst is removed.
6. Remove clamp assembly (1) from flexible exhaust pipe (2).
7. If necessary, follow Step 7.a through Step 7.c to remove flexible exhaust pipe (2).
a. Loosen clamp assembly (7) for flexible exhaust pipe (2).
b. Remove flexible exhaust pipe (2). Ensure that the flexible exhaust pipe is not strained as the flexible exhaust pipe is removed.
c. If necessary, remove cover (6) from flexible exhaust pipe (2).
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8. If necessary, follow Step 8.a through Step 8.b to remove clamps (4).
a. Make temporary marks on clamps (4) for
installation purposes.
b. Remove clips (8) from pins (9) and remove
clamps (4) from the bracket.
c. Follow Step 8.a through Step 8.bto remove remaining clamps (4).