Assembly Instruction for the New 3400 Oil Pump Body Serviced Assembly{1304} Caterpillar

Generator Set Engine:

3406 (S/N: 75Z1-UP)

3406B (S/N: 2WB1-UP; 4JK1-UP; 9PL1-UP; 4PM1-UP)

3406C (S/N: 4RG1-UP; 2AM1-UP; 4BM1-UP; 4ZR1-UP; 1LS1-UP; 8FS1-UP; 9ES1-UP; KPS1-UP; LRX1-UP)

3406E (S/N: 9NN1-UP; 8AZ1-UP)

Industrial Engine:

3406 (S/N: 90U1-UP)

3406B (S/N: 6TB1-UP)

3406C (S/N: 7141-UP)

3406E (S/N: 6BR1-UP)

Machine Engines: 3406 3406B 3406C 3406E

Marine Engine:

3406 (S/N: 91U1-UP)

3406B (S/N: 4TB1-UP)

3406C (S/N: 3ER1-UP; 1SS1-UP)

3406E (S/N: 9WR1-UP)

On-highway Engine:

3406 (S/N: 92U1-UP)

3406B (S/N: 7FB1-UP; 8TC1-UP; 4MG1-UP; 5YG1-UP; 3ZJ1-UP; 5KJ1-UP; 2EK1-UP; 4CK1-UP)

3406C (S/N: 8PN1-UP)

3406E (S/N: 5EK1-UP; 1MM1-UP; 2WS1-UP; 5DS1-UP; 6TS1-UP; 1LW1-UP)

Introduction

This instruction provides the information in order to assemble the oil pump body and the oil pump idler gear.

The 236-9918 Body Assembly is a service replacement for the following: 4N-0513 Oil Pump Body Assembly , 6N-2343 Pump Body Assembly and 235-1587 Body Assembly . When you replace your oil pump, look for an idler gear assembly. If you replace a pump with an idler gear, refer to ""Oil Pump Body with an Idler Gear" ". If you replace a pump that does not have an idler gear, refer to ""Oil Pump without an Idler Gear" ".

Oil Pump Body with an Idler Gear

Illustration 1	g01019892
Oil pump housing with an idler gear

If you replace an oil pump body that has an idler gear assembly, you need to remove the pipe plug. Remove the pipe plug from location (1) before you assemble the idler gear.

Oil Pump without an Idler Gear

Illustration 2	g01019893
Oil pump housing without an idler gear

If you replace an oil pump that does not have an idler gear, leave pipe plug (2) installed in the housing. Do not remove pipe plug (2) .