CAT CGI Bellows and Piping Inspection

m2 mm 49.02.000

On vehicles with CAT engines, inspect the CGI bellows and piping for evidence of damage or leakage. See Fig..

Notice: A leak in the CGI piping, including the bellows, will allow unfiltered air and contaminants into the engine intake, and can cause serious engine damage.

Note: Because the CGI bellows is covered with a metal mesh, it is difficult to see cracks or damage that may cause a leak.

  1. If the bellows is damaged or leaking, replace it. See Replacement of the CAT CGI Bellows for the replacement procedure.

    1. Clamp

    2. Inlet Pipe

    3. U-Clamp

    4. Forward Pipe-Support Brace

    5. Slip Clamp

    6. CGI Bellows

    7. Center Pipe-Support Brace

    8. Center Pipe

    9. Clamp

    10. Outlet Pipe

    Fig. 1, CAT EPA07 Exhaust Installation with CGI Bellows

  2. Check the CGI piping and each exhaust seal clamp for leakage, wear, cracks, or damage. Replace damaged components as needed. If leakage exists at a clamp, tighten the nuts to the required torque. If leakage persists, install a new exhaust seal clamp. Do not reuse seal clamps. Once a seal clamp is loosened or removed, it must be replaced. If any of the components is damaged or leaking, replace it. See Replacement of the CAT CGI Bellows for the replacement procedure.
Note:
Parent topic: Exhaust
Document Number: 0000119750
Manual Publication Date: 2024-05-23
Topic Publication Date: 2024-11-06