BREATHER 4169885 - Caterpillar

Fuel leaked or spilled onto hot surfaces or electrical components can cause a fire. To help prevent possible injury, turn the start switch off when changing fuel filters or water separator elements. Clean up fuel spills immediately.
Do not allow dirt to enter the fuel system. Thoroughly clean the area around a fuel system component that will be disconnected. Fit a suitable cover over disconnected fuel system component.
Illustration 1 g01118416
Typical example
(1) Screw
(2) Element
(3) Glass bowl
(4) Sensor connection
(5) Drain
(6) Bottom cover
Turn the fuel supply valve (if equipped) to the OFF position.
Place a suitable container under the water separator. Clean the outside of the water separator.
Open the drain (5). Allow the fluid to drain into the container.
Tighten the drain (5) by hand pressure only.
Hold the element (2) and remove the screw (1). Remove the element and the glass bowl (3) from the base. Discard the old element.
Clean the glass bowl (4). Clean the bottom cover (6).
Install the new O ring seal. Install the bottom cover onto the new element. Install the assembly onto the base.
Install the screw (1) and tighten the screw to a torque of 8 N m (6 lb ft).
Remove the container and dispose of the fuel safely.
Open the fuel supply valve.
Prime the fuel system. Refer to the Operation and Maintenance Manual, "Fuel System - Prime" for more information.