PUMP GP-ENGINE OIL 2004497 - Caterpillar

Caterpillar: Confidential Yellow
PSP FOR EXHAUST GAS LEAKAGE BETWEEN TURBOCHARGER AND EXHAUST ELBOW - PS0190 3508 3512 MARINE ENGINES WORLDWIDE
  The information supplied in this service letter may not be valid after the termination date of this program.   Do not perform the work outlined in this Service Letter after the termination date without first contacting your Caterpillar product analyst.
PRODUCT SUPPORT PROGRAM FOR EXHAUST GAS LEAKAGE BETWEEN TURBOCHARGER AND EXHAUST ELBOW 3508, 3512, 3516 Marine Engines, PS0190, 1061 U-78 A-71 AU-65 B-29 C-72 E-63 O-60 See February 27, 1984 Problem The listed engines can develop exhaust gas leaks where the turbocharger connects to the exhaust elbow. This causes soot in the engine room. A new, dry-type exhaust elbow is now used in place of the water cooled elbow. This permits use of a short coupling, with two expander-type seals in the coupling, between each turbocharger and the exhaust elbow inlet. See Illustration. These new parts prevent smoke leaks around the joints. Affected Engines And Parts Needed All the listed engines in dealer and OEM inventories are immediately included in this PSP. Engines already delivered are included if exhaust gas leakage occurs. Model Serial No. Parts Needed 3508 Marine 96Y1-96Y617 1 - 4W1453 Elbow 3508 Marine 69Z1-69Z255 2 - 4W1454 Adapter 3512 Marine 66Z1-66Z153 2 - 4W1455 Coupling 4 - 4W1478 Seal Group 2 - 4W2359 Gasket 1 - 3S8313 Plug 8 - S1594 Bolt 8 - 5M2894 Washer 3512 Marine 50Y1-50Y539 1 - 4W1453 Elbow 3516 Marine 72Z1-72Z316 2 - 4W1454 Adapter 2 - 4W1456 Coupling 4 - 4W1478 Seal Group 2 - 4W2359 Gasket 1 - 3S8313 Plug 8 - S1594 Bolt 8 - 5M2894 Washer Action Requested (No Parts Stock Action Needed) Install the new parts on all the listed engines in your inventory