Identifying Oil Pumps on Certain C27, C32, and 3412 Engines {1304} Caterpillar

Electric Power Generation

C27 PET GEN SET (S/N: R8W1-UP)

Generator Set

C27 GEN SET (S/N: N1B1-UP; GDS1-UP; T4Z1-UP)

C32 (S/N: BT41-UP; WJD1-UP; PHT1-UP)

C32 GEN SET (S/N: AL61-UP; K7C1-UP; NRC1-UP; SXC1-UP; JAZ1-UP)

Industrial Engine

C27 (S/N: AT41-UP)

C27 INDUSTRIAL (S/N: RAM1-UP; TWM1-UP)

C32 INDUSTRIAL (S/N: TLD1-UP; NST1-UP)

Locomotive Engine

C27 LOCO (S/N: WJC1-UP)

Marine Engine

C32 MARINE (S/N: RSD1-UP; RPM1-UP; SDN1-UP; RNY1-UP)

C32 MARINE GS (S/N: DSJ1-UP; RTK1-UP)

Petroleum Engine

C32 PETROLEUM (S/N: B2C1-UP; SDK1-UP; SMP1-UP)

Petroleum Power Train Package

C27 KNOCKDOWN K (S/N: 1271-UP)

C32 KNOCKDOWN K (S/N: 1321-UP)

C32 PET GENSET (S/N: PEF1-UP)

C27, C32, and 3412 engines equipped with certain engine oil pumps may experience low oil pressure or no oil pressure. Casting codes between 40501 to 50215 should be replaced.

The engine oil pump part numbers are listed in Table 1.

Identify Pump Casting Code

Illustration 1	g06097049

Illustration 2	g06097118
View A (1) Foundry code (2) Date code

Illustration 3	g06097123
View B (3) Serial number

Illustration 4	g06097053
Date code 50110

The following explains how to read date code 50110.

• 5 - year - 2015

• 01 - month - January

• 10 - day - 10