Section V. FUEL FILTERS

TM 5-3835-222-BD

Record the BDAR action taken. When the mission is completed, as soon as practicable, repair the

equipment using standard maintenance procedures.

5-15. Fuel injector Line, Rupture.

a. If a high pressure fuel line is damaged and there is not time for a better repair, cut the line and

weld or crimp shut the injector pump side. The engine will run for a limited time on fewer cylinders.

b. If a replacement line is not available, repair the defective line. Remove it from the equipment

and clean it. Braze pin holes closed. If the hole is too large for this procedure, cut out the section of

line. Use a piece of slightly large metal tubing as a sleeve, overlapping both cut ends of the injector

line. The sleeve should fit tightly over the injector line;. if it is too loose, crimp to get a tight fit. Then

braze or silver solder both ends of the sleeve to the fuel line.

Section V. FUEL FILTERS

5-18. General. Fuel filters are needed to remove dirt and water from the fuel. Dirt and water will

cause damage to the fuel injectors if fuel is not filtered. Fuel filters are normally mounted in series,

a primary and a secondary filter. Fuel filters should only be bypassed as a last resort.

5-17. Fuel Filter Clogged or Frozen. The first indication of clogged or frozen fuel filters will be a

failure of the engine to start or degraded performance due to insufficient fuel. Fuel filters, if drained

periodically, should not freeze. Clogged filters must be cleaned or changed to correct the problem.

Limitations:

Possible engine internal damage if filters are bypassed.

Personnel/Time Required:

1-2 soldiers - 15 - 30 minutes

Other Options:

Remove filter elements.

Procedural Steps:

Option 1: Cleaning filters.

a. Gain access to fuel filters.

b. Remove the fuel filter from the cannister.

c. Rinse the filter in a pan of fuel or blow out with compressed air; if frozen thaw out.

c. Reinstall the fuel filter.

e. Start the engine.

5-12