TM10-3930-660-20 SECTION  III.  TECHNICAL  PRINCIPLES  OF  OPERATION Page Page General . . . . . . . . . . . . . . . . . . . . . . . 1-8 Transmission Cooling and Engine Fuel System . . . . . . . . . . . . . .1-8 Lubrication System . . . . . . . . . . . . . . . . . .1-10 Engine Lubrication System . . . . . . .1-9 Electrical System . . . . . . . . . . . . . . . . . . . . . .1-11 Engine Cooling System . . . . . . . . . . .1-10 Steering and Braking System . . . . . . . . . . . .1-12 Hydraulic System . . . . . . . . . . . . . . . . . . . . . . .1-13 1-15. GENERAL This section explains how components of the 6KVRRTFL work together. A functional description is given for the engine, electrical system, steering and brake systems, and  hydraulic  system. 1-16. ENGINE FUEL  SYSTEM WATER SEPARATOR. Removes water moisture from fuel. FUEL  FILTER. Removes larger particles from the fuel before it reaches the transfer pump. Has primary and secondary filter elements. FUEL TRANSFER PUMP. Pulls fuel from the fuel tank through the fuel filter, and sends it on to the fuel injection pump. FUEL INJECTION PUMP. Sends exact amount of fuel to the injector nozzles. FUEL INJECTOR NOZZLE. Turns the stream of fuel into a fine spray which permits good combustion in the cylinder. There is one nozzle for each cylinder. 1-8