Fuel System - Operation and Tests/Fuel Injection Nozzles CTM3274 (01JUL99) 220-23 Saran Liter Engines 060799 PN=362 FUEL INJECTION NOZZLES - GENERAL INFORMATION Fuel injection nozzles are of the multi-orifice type. The nozzle spray tip (1) forms an integral unit with nozzle body (4) from which it cannot be separated. The injection nozzle is secured in the cylinder head by three superimposed spring clamps which press on a location clamp and a cap screw. The contact pressure is limited by a spacer ring. The nozzle is sealed in the cylinder head at its lower end with a carbon stop seal (2). The top end is sealed with seal washer (5).
Clamp (19) ensures correct position of the complete fuel injection nozzle in the cylinder head. The leak-off line is connected by T-piece (14), which is fitted on the nozzle body and secured with grommet (18) and hex. nut (17). The fuel injection nozzle works basically in the same -UN-08MAR95 way as a normal spray type nozzle. Its opening pressure is adjusted by the pressure adjusting screw (16). The valve lift of nozzle valve (3) is adjusted by screw (12) located in pressure adjusting screw (16). CD30040 The carbon stop seal (2) prevents carbon from collecting around nozzle in cylinder head. The fuel injection nozzles have four orifices.
1—Spray tip 12—Lift adjusting screw 2—Carbon stop seal 13—Lock nut 3—Nozzle valve 14—T-piece 4—Nozzle body 15—Lock nut 5—Seal washer 16—Pressure adjusting 6—Connection for screw injection line 17—Hex. nut 7—Nozzle valve guide 18—Grommet 8—Union nut 19—Location clamp 9—Spring seat 20—Nipple 10—Adjustable pressure 21—Filter screen spring 22—Fuel pressure line 11—Spacer washer CD,3274,G220,11-19-15MAY92 220 23