SEAL 7D7837 - Caterpillar

Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A - Bellows Protector 1
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 Particulate Filter or Catalytic Converter Muffler. Failure to do so could result in personal injury.
The muffler, catalytic converter/muffler, and diesel particulate filter will become extremely hot during engine operation. A hot muffler, catalytic converter/muffler and diesel particulate filter can cause serious burns. Allow adequate cooling time before working on or near the muffler, catalytic converter/muffler and diesel particulate filter.
Do not strike any part of the assembly of the Diesel Particulate Filter (DPF). Do not allow any object to contact the internal element of the DPF. If the internal element of the DPF becomes damaged, the assembly must be replaced.
Illustration 1 g03020017
Illustration 2 g03013138
Typical example
Illustration 3 g03013381
Typical example
If necessary, remove the Original Equipment Manufacturer's (OEM) exhaust tube assembly from outlet (4). Refer to the OEM for the correct procedure.
Make temporary alignment marks on DPF (6) and clamps (11) in Positions (A), (B), (C) and (D) in order to ensure that the DPF is installed in the original position.
If the DPF is installed onto the flywheel housing, install Tooling (A) in Position (E) in order to maintain correct alignment of flexible exhaust pipe assembly (8).
Disconnect the flexible exhaust pipe assembly (8). Refer to Disassembly and Assembly, "Flexible Exhaust Pipe - Remove and Install" for the correct procedure.
Make a temporary mark on Diesel Particulate Filter (DPF) (6) in order to show the direction of the flow for the exhaust gases.
Disconnect the wiring harness from connection (1) for temperature sensor (9). Note: Make temporary identification marks on all connections for assembly purposes.
Disconnect the wiring harness from connection (2) for temperature sensor (3) Note: Make temporary identification marks on all connections for assembly purposes.
Disconnect pressure sensor tube assembly (5) from the DPF. Note: Make temporary identification marks on the tube assembly for assembly purposes.
Disconnect pressure sensor tube assembly (7) from the DPF. Note: Make temporary identification marks on the tube assembly for assembly purposes.
Remove bolts (10) from clamps (11). Remove the clamps from the DPF in order to allow removal of the DPF.
Attach a suitable lifting device to the DPF . The weight of the DPF is approximately 15 kg (33 lb).
Use the suitable lifting device in order to remove the DPF from bracket (12).
If necessary, remove temperature sensor (3) and temperature sensor (9). Refer to Disassembly and Assembly, "Temperature Sensor (DPF) - Remove and Install" for the correct procedure.