2014/08/01 Caterpillar

A New Oil Screen is Used on the High-Pressure Fuel Pump Adapter on C175 Engines {1151, 1162, 1206}

Usage:

Electric Power Generation: C175-16 (S/N: WYB1-UP)
Engine: C175-16 (S/N: M6A1-UP; Y3A1-UP; M6B1-UP; WYC1-UP; P6L1-UP; R1X1-UP; 3A91-UP) C175-20 (S/N: BXR1-UP)

Engine News SEBD9901, 03 October 2013, "A New Oil Screen is Used on the High-Pressure Fuel Pump Adapter on C175 Engines". Disregard the previous article, refer to the article that follows.

Description of Change: A new screen is used on the high-pressure fuel pump drive adapter. The screen filters return oil flow from the high-pressure fuel pump to the front gear train. The screen helps to prevent possible contamination of the engine front gear train from the high-pressure fuel pump gear train.

Adaptable To: The new 459-6534 Screen As replaces the existing 440-4285 Screen As. The new screen assembly is adaptable back to first production of the serial numbers listed above. Refer to Table 2 for the effective serial numbers.

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Illustration 1	g03454722
(1) 459-6534 Screen As

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Table 1
Required Parts
Qty	Part Number
1	3P-1156 O-Ring Seal
1	6V-5553 O-Ring Seal
1	330-3517 O-Ring Seal
1	459-6534 Screen As

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Table 2
Effectivity
S/N:M6A01008-UP
S/N:M6B01005-UP
S/N:P6L01063-UP
S/N:R1X00114-UP
S/N:WYB01556-UP
S/N:WYC01003-UP
S/N:BXR01100-UP
S/N:Y3A00125-UP
S/N:3A900135-UP