SECONDARY AND FINAL FUEL FILTERS TESTING AND MAINTENANCE - continued

TM 9-2320-361-24-1

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SECONDARY AND FINAL FUEL FILTERS TESTING AND MAINTENANCE (Contd)

TESTING FUEL PRESSURE

WARNING

Diesel fuel is flammable. Do not perform fuel system

procedures near open flames. Injury or death to personnel may

result.

NOTE

Fuel filters may have one or two bleeder valves. Remove only

one bleeder valve for testing fuel pressure.

Remove bleeder valve (1) or (4) from top of fuel filter head (5).

Install adapter (3) and fuel pressure gauge (2) on bleeder valve (1) or (4) opening of fuel filter

head (5).

CAUTION

Do not start engine. Starting engine may damage fuel pressure

gauge.

Turn accessory switch to ON position (TM 9-2320-361-10) to start fuel pump.

Read pressure on fuel pressure gauge (2).

a. If pressure reads at least 2 psi (13.8 kPa), condition of all fuel filters is satisfactory.

b. If pressure reads below 2 psi (13.8 kPa), turn accessory switch to OFF position

(TM 9-2320-361-10) and inspect fuel supply tubes (9) for damage. If necessary, replace primary

fuel filter (WP 0063 00). If pressure is still not at least 2 psi (13.8 kPa), continue with fuel filter

draining and replace secondary and final fuel filter.

DRAINING

WARNING

Accidental or intentional introduction of liquid contaminants

into the environment is a violation of state, federal, and

military regulations. Refer to Army POL (WP 0001 00) for

information concerning storage, use, and disposal of these

liquids. Failure to do so may result in damage to environment

and health of personnel.

NOTE

Use a drain pan to capture any draining fuel. Dispose of fluids

in accordance with local policy and ordinances. Ensure all spills

are cleaned up.

Open two drain valves (7) to drain fuel from secondary fuel filter housing (8) and final fuel filter

housing (6).

Close two drain valves (7).

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