WETT001304 Komatsu Utility Europe Customer Service Department Pag.
Engine : Characteristics • • MODEL IVECO NEF S4D104E TYPE TURBO NET HORSEPOWER 99 HP / 2200 rpm TORQUE 398 Nm / 1400 rpm DISPLACEMENT 4,485 l COMPRESSION RATIO 17,5 : 1 bar Very clean engine In compliance with following homologations: 97/68 CE Stage 2 and EPA Tier 2 • • • High displacement (4,5 litres) to guarantee reserve of torque, power and low utilisation Reduced specific fuel consumption Reduced noise level WETT001304 Komatsu Utility Europe Customer Service Department Pag.
Engine : Gas Emission STAGE 2 normative: WB93/97R-5 Gas emissions 100% 8 1,1 75% 5 50% 7,8 0,5 25% 1 0% NOx HC Komatsu (g/kWh) WETT001304 Komatsu Utility Europe CO Emission Limit (g/kWh) Customer Service Department Pag.
Engine : Performance Curves WETT001304 Komatsu Utility Europe Customer Service Department Pag.
Engine : Main Concept WETT001304 Komatsu Utility Europe Customer Service Department Pag.
Engine : Main Concept WETT001304 Komatsu Utility Europe Customer Service Department Pag.
Engine : Fuel Injection Pump Structure Injection pump The pump is rotary type, and it is driven by a gear coupled with the camshaft gear. (S)4D104E - 1 Cut views Longitudinal section of injection pump 1. Membrane - 2. Adjusting hub nut - 3. Feeler - 4. Control lever - 5. Speed controller 6. Booster pump - 7. Driving shaft - 8. Cam disk - 9. Injection adjuster 10. Distributor piston - 11. Feed connection piece - 12. Hydraulic head 13. Control plate - 14. Control rod - 15. Counterspring.
Engine : Fuel Injection Pump Operation 1 Supply step 3 Feed end The distributor piston (6) is placed in the b.d.c. and the slide valve (8) shuts the bore for the fuel cut-off (7). The fuel is fed into the compression chamber via feed pipe (1) that is kept open by the solenoid valve (2). The distributor piston (6) opens the high-pressure chamber by means of pipe (4) during its lift to the T.D.C.
Engine : Fuel Injection Pump – LDA Device L.D.A. Mode of operation The LDA device adjusts the fuel throughput independent of the air pressure in the suction manifold. This air pressure acts upon the membrane (1) which is rigidly connected to the controller pin (4). The lower part of the controller pin (4) is provided with a conical mounting (5) with a feeler pin (6). By means of the axial displacement of the controller pin (4) the feeler pin (6) is also displaced and acts upon the stop lever (7).
Engine : Fuel Injection Pump – (L.F.B.) Mode of operation Description The load-dependent adjustment of the start of delivery (LFB) enables a "smoother" engine operation (reduced in noise). The LFB device is realised by means of the following changes: Governor collar with an additional bore to the anti pump bore. Controller shaft with an oblong hole and two cross holes Pump housing with a hole that is closed from outside by means of a ball and that is connected to the feed chamber. 1. 2. 3. 4. 5. 6. 7.
Engine : Fuel Injection Pump – (KKSB) The KKSB device allows to set the required cold start injection advance. WETT001304 Komatsu Utility Europe Customer Service Department Pag.
Engine : Fuel Injection Timing Inspection and adjustment WETT001304 Komatsu Utility Europe Customer Service Department Pag.
Engine : Turbocharger WETT001304 Komatsu Utility Europe Customer Service Department Pag.
Engine : Repair Kit Bearing (-0,25 mm) Bearing (-0,50 mm) Ring kit (+0,40 mm) Piston assy (+0,40 mm) Bearing (-0,25 mm) Bearing (-0,50 mm) WETT001304 Komatsu Utility Europe Customer Service Department Pag.
Engine : Workshop Data WETT001304 Komatsu Utility Europe Customer Service Department Pag.
Engine : Workshop Data WETT001304 Komatsu Utility Europe Customer Service Department Pag.
Engine : Workshop Data Heat exchanger Exhaust manifold Turbo compressor: - first step: 4-3-1-2 - second step: 1-4-2-3 Oil pan: - first step: from 1 to 16 - second step: from 17 to 32 WETT001304 Komatsu Utility Europe Customer Service Department Pag.
Engine : Workshop Data WETT001304 Komatsu Utility Europe Customer Service Department Pag.
Engine : Troubleshooting WETT001304 Komatsu Utility Europe Customer Service Department Pag.
Engine : Troubleshooting WETT001304 Komatsu Utility Europe Customer Service Department Pag.
Engine : Troubleshooting WETT001304 Komatsu Utility Europe Customer Service Department Pag.
Engine : Troubleshooting WETT001304 Komatsu Utility Europe Customer Service Department Pag.
Engine : Troubleshooting WETT001304 Komatsu Utility Europe Customer Service Department Pag.
Engine : Troubleshooting WETT001304 Komatsu Utility Europe Customer Service Department Pag.
