TM 10-3930-638-24&P 1-16.   FUEL   SYSTEM FUEL INJECTORS, Four used; closed end, differen- 1. tial  pressure,  hydraulically  operated.  hole  type  injector. 2. ELECTRIC FUEL PUMP. Operates bon 24 Volts; pumps fuel from fuel tank through in-line fuel filter, and to fuel injection pump through primary and final fuel fi- ters. WARNING If NBC exposure is suspected, all air filter media should be handled by personnel wear- ing protective equipment. Consult your unit NBC Officer or NBC NCO for appropriate handling or disposal procedures. 3. AIR CLEANER. Dry type air cleaner. Filters air be- fore air is applied to intake manifold. 4.  FUEL  TANK.  27  gallon  capacity:  part  of  rear  chassis. 1-17.  EXHAUST  SYSTEM 5.  FUEL  INJECTION  PUMP.  Fuel  from  primary  and final fuel filters is routed to fuel injection pump where fuel is metered accurately and applied to each cylinckr at high pressure through fuel injector nozzles at precisely timed intervals. Fuel metering is controlled by the throt- tle shaft lever. which is connected by cable to operator’s acclerator  pedal.  Speee  regulating  governor  mounted  at top of fuel injection pump. Equipped with electrical so- lenoid for positive fuel shut-off. 6. FUEL FILTERS. Primary and final fuel fuel filters remove fuel oil impurities which may damage fuel injec- tion  pump  and/or  fuel  injectors. 7. FUEL STRAINER. Located at fuel tank. Blocks pas- sage of sediment to electric fuel pump. 8. IN-LINE FUEL FILTER. Filter injection arrange- ment for cold starting of engine. Connected by tube to intake  manifold. 1. MUFFLER. Muffles engine noise. Mounted on top of 2.   EXHAUST PIPE. Channels engine exhaust smoke/ engine. combustion by-products from engine to rear of truck. 1-8   Change   5