Bobcat 331 - Fuel System (Cont’d)

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P–21159

Operation & Maintenance Manual–41–

331/331E/334 Excavator

FUEL SYSTEM (Cont’d)

Removing Water From The Fuel Filter

See the SERVICE SCHEDULE, Page 35 for the service

interval when to remove the water from the fuel filter.

Open the tailgate.

Loosen the drain (Item 1) [A] at the bottom of the filter

element to drain water from the filter.

Fuel Filter

See the SERVICE SCHEDULE, Page 35 for the service

interval when to replace the fuel filter.

Remove the filter element (Item 2) [A] and clean the area

around the filter housing.

Put oil on the seal of the new filter element; install the fuel

filter, and hand tighten.

Remove the air from the fuel system. (See below)

Removing Air From The Fuel System

After replacing the fuel filter or when the fuel tank has run

out of fuel, air must be removed from the fuel system before

starting the engine.

Open the fuel filter vent (Item 1) [B] and operate the hand

pump (priming bulb) (Item 2) [A] until the fuel flows from the

vent with no air bubbles.

Close the vent (Item 1) [B].

Start the engine. It may be necessary to open the vent

(Item 3) [B] (at the fuel injection pump) briefly until the

engine runs smoothly.

Draining The Fuel Tank

See the SERVICE SCHEDULE, Page 35 for the correct

service interval.

Remove the hose (Item 4) [B] from the fuel injection pump.

Route the hose to the bottom of the engine compartment

and out the tailgate.

Drain the fuel into a container.

Reuse, recycle or dispose of fuel in an environmentally safe

manner.

Diesel fuel or hydraulic fluid under pressure

can penetrate skin or eyes, causing serious

injury or death. Fluid leaks under pressure may

not be visible. Use a piece of cardboard or wood

to find leaks. Do not use your bare hand. Wear

safety goggles. If fluid enters skin or eyes, get

immediate medical attention from a physician

familiar with this injury.

W–2072–0496

Always clean up spilled fuel or oil. Keep heat,

flames, sparks or lighted tobacco away from

fuel and oil. Failure to use care around

combustibles can cause explosion or fire

which can result in injury or death.

W–2103–1285

P–21193