CHAPTER 5 FUEL SUPPLY SYSTEM

TM 5-3835-222-BD

CHAPTER 5

FUEL SUPPLY SYSTEM

BDAR FIXES SHALL BE USED ONLY IN COMBAT OR FOR

TRAINING AT THE DISCRETION OF THE COMMANDER.

(AUTHORIZED TRAINING FIXES ARE LISTED IN APPENDIX E.)

IN EITHER CASE, DAMAGES SHALL BE REPAIRED BY

STANDARD MAINTENANCE PROCEDURES

AS SOON AS PRACTICABLE.

CAUTION

A diesel engine can be severely damaged by using unfiltered fuels.

Section I. INTRODUCTION

5 - 1 . S c o p e . Fuel supply system consist of fuel storage tanks, fuel pumps, filters, tubes and

hoses needed to route the fuel. Some engines use electrical fuel pumps located in the tanks and

a mechanized engine mounted fuel pump to move the fuel. Other systems mount the fuel storage

tank in a location which allows gravity flow of the fuel to the engine assisted by an engine mounted

mechanical pump. Two filters are mounted in series to provide a primary and secondary filtration

system to trap dirt and other contaminants. Fuel filters must be checked for accumulations of dirt

and water. A diesel engine can be severely damaged by using unfiltered fuels.

5-2. Assessment Procedure.

Visually inspect

Damage found to:

-Fuel Tank . . . . . . . . . . . . . . . . . . . . . . . Go To Section II

-Fuel Lines . . . . . . . . . . . . . . . . . . . . . . Go To Section IV

-Fuel Filters.. . . . . . . . . . . . . . . . . . . . . Go To Section V

b. Check for impurities in the fuel such as water or dirt.

Damage found to:

c. Attempt To Operate

-Tank Or Lines . . . . . . . . . . . . . . . . . . . Go To Sections II or IV

-Pump lnoperative . . . . . . . . . . . . . . . Go To Section Ill

-Fuel Filters Inoperative. . . . . . . . . . Go To Section V

Damage Or Substandard Operation

d. Observe Operation

Of:

-Pumps Found . . . . . . . . . . . . . . . . . . . Go To Section Ill

-Fuel Filters . . . . . . . . . . . . . . . . . . . . . Go To Section V

5-1