2005/12/05 Caterpillar

Aftercoolers that are Made of a Stainless Steel Alloy are Now Available {1063}

Usage:

Engine: G3516B (S/N: CEY1-UP; 7EZ1-UP) G3520B (S/N: BGW1-UP)
Generator Set: G3516B (S/N: ZBB1-UP; CSC1-UP; ZBC1-UP; CME1-UP) G3520B (S/N: CWD1-UP)
Power Module: PMG3516 (S/N: CFD1-UP)

A new aftercooler core is available for the above engine applications that use low pressure gas fuel systems. The stainless steel alloy is able to resist the severe environment that is created by the following conditions:

Gaseous fuel with concentration levels of H₂S that are greater than 3 Part Per Million (PPM)
High relative humidity conditions that are greater than 50 percent

In this environment, heavy corrosion may occur in an aftercooler core that is made of copper.

Refer to the following Tables that list the replacement part numbers for the engine applications that are affected.

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Table 1
G3520B Engines
Qty	Part Number	Part Reference Number
3	153-4053 Gasket	269-6919 Water Aftercooler Gp 275-0563 Fresh Water Heat Exchanger Group
2	274-8017 Aftercooler Core As
2	269-6915 Adapter	269-6917 Water Lines Gp
1	269-6911 Tube As
1	269-6912 Tube As
2	8C-5098 Tube Joint
4	8T-1919 O-Ring Seal	269-6918 Water Lines Gp
1	269-6913 Tube As
1	269-6914 Tube As

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Table 2
G3516B Engines
Qty	Part Number	Part Reference Number
1	267-1305 Bracket	263-3825 Fuel Lines Gp
1	267-1306 Plate As
1	5R-9779 Gasket
1	262-5495 Tube	262-5497 Water Lines Gp
1	262-5496 Tube
1	6J-3840 Tube Joint
1	8T-2657 Tube Joint
2	171-4358 O-Ring Seal
2	153-9963 Ring	262-5502 Water Lines Gp
4	157-1435 Clamp
2	157-1437 Bracket
1	262-5500 Tube As
1	262-5501 Tube As
1	266-8518 Tube
6	8T-1919 O-Ring Seal
1	8T-6762 Pipe Plug
3	152-5705 Gasket	262-5494 Water Aftercooler Gp 256-0621 Water Aftercooler Gp
2	197-8674 Core
2	3B-9067 Drain Cock
4	8T-6764 Pipe Plug
4	4N-1418 Radiator Inlet Gasket
4	172-1249 Plate
1	263-5079 Flange	263-5080 Turbocharger Adapter Gp
1	177-6911 O-Ring Seal	263-5080 Turbocharger Adapter Gp
1	263-3947 Plate As	263-3948 Air Lines Gp
1	8N-0392 Gasket	263-3948 Air Lines Gp