Engine Diagrams C Series Page E-10 Section E - Engine and System Identification Industrial Applications Left View - C8.3 - Industrial 1 Engine air inlet 2 Shutoff solenoid 3 M22 x 1.5 inlet (air) 4 Rear lifting bracket 5 Fuel filter 6 Fuel/water separator 7 Fuel transfer pump 8 3/4 x 16-inch UNF tap for magnetic pickup 9 Lubricating oil pan drain plug 10 Lubricating oil dipstick 11 Front engine mounting bracket 12 Engine dataplate 13 Fuel injection pump 14 Delivery valve 15 Fuel drain line 16 High-pressure fuel lines 17 1/2-inch NPTF inlet (air) 18 Intake air heater.