ENGINE AR-PRIMARY 2421329 - Caterpillar

Removal Procedure
The element filter has a fuel filter element in a filter case. The element filter is combined with the fuel priming pump.Removal Procedure for the Element Filter
Note: There is an option for the three cylinder engine. The fuel filter and the fuel priming pump can be installed onto the application rather than onto the engine. If this is the case, refer to the appropriate OEM information as well to this text.
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Dispose of all fluids according to local regulations and mandates.
Illustration 1 g01010637
Typical example
Illustration 2 g01010595
Typical example
Place a suitable container below the filter in order to collect the spilled fuel. Thoroughly clean the outside surfaces of the fuel filter. Open the drain (1) in order to drain the fuel from the filter.
Use a suitable strap wrench to loosen the filter case (2). Remove the filter case (2) from the filter head (5).
Push down against the spring pressure that is applied to the filter element (4). Rotate the filter element (4) counterclockwise in order to release the filter element from the filter case (2).
Discard the filter element (4) and the O-ring (3). Installation Procedure
The element filter has a fuel filter element in a filter case that combined with the fuel priming pump.Installation Procedure for the Element Filter
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 3 g01010637
Typical example
Illustration 4 g01010595
Typical example
Thoroughly clean the inside of the filter case (2) and thoroughly clean the lower face of the filter head (5).
Inspect the thread of a new filter element (4) in order to ensure that the thread is not damaged. Inspect the thread of the adapter in the filter head (5) in order to ensure that the thread is not damaged.
Inspect the condition of the spring and ensure that the spring is correctly located within the filter case (2).
Install the new filter element (4) into the filter case (2). Push the filter element against the spring pressure and rotate the filter element in a clockwise direction in order to secure the filter element within the filter case (2).
Lightly lubricate a new O-ring (3) with clean fuel oil. Install the new O-ring (3) into the recess within the filter case (2).
Close the drain (1).
Remove the air from the fuel system. Refer to the Operations and Maintenance Manual, "Fuel System - Prime". Remove the suitable container and dispose of the fuel that has drained as waste.