ELEMENT (primary) 4M9378 - Caterpillar

Gas EngineG3516B (S/N: N6E1-UP)Industrial EngineG3520B (S/N: GLF1100-UP)Petroleum EngineG3520B PETROLEUM (S/N: TPC1001-UP)Description Of Change: The new air inlet elbow improves the mixing strategy of the fuel and air in the inlet. The air lines and fuel lines have been updated as well to make them compatible with the new elbow.Adaptable To: The new air inlet elbow, air inlet lines, and fuel lines replace the former air inlet elbow, air inlet lines, and fuel lines.The new air inlet elbow, air inlet lines, and fuel lines are adaptable to the above engines back to first production.Note: The new parts are not compatible with the former parts. All parts must be upgraded at the same time.Reference: Special Instruction, REHS9718 for installation instructions.Note: The former parts are still serviceable.The new and former parts are listed in Table 1.
Table 1
New Parts Description Former Parts
463-6667 Air Inlet Elbow Gp 332-3758, 326-7939
463-6668 Fuel Lines Gp 384-0730, 328-2643
463-6669 Air Lines Gp 382-6035, 328-2638 This change is effective for the serial numbers listed in Table 2.
Table 2
Effective Serial Number
S/N:N6E00347-UP
S/N:TPC01191-UP
S/N:GLF01109-UP