3406E and 3456 Industrial Engines – Fuel Manifold

Remove & Install Fuel Manifold

Fluid Spillage Containment

Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the machine. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to “Tools And Shop Products Guide”, NENG2500 for tools and supplies suitable to collect and contain fluids in Caterpillar machines. Dispose of fluids according to local regulations and mandates.

1. Put marks on the fuel lines connected to fuel manifold (1) for purposes of identification. Disconnect the fuel lines to fuel manifold (1).

2. Remove the support clip holding wire (2) to the cylinder block. Disconnect wire (2) at the connector.


Upon installation, the connector must pull into the receptacle using the Allen screws. A clip holds the Allen screws into the connector. Removing the screws will damage the seals.

3. Remove bolts (3) holding fuel manifold (1) to the cylinder block. Remove fuel manifold (1).

4. Install fuel manifold (1) in the reverse order of removal.