TM-9-2320-361-24-2 Field Maintenance Manual Volume 2 for M44A2 Series Trucks
Page 842 of 1144
TM 9-2320-361-24-2 0423 00 0423 00-2 ENGINE COOLANT HEATER FUEL TUBE AND PREHEATER RESISTOR REPLACEMENT (Contd) REMOVAL NOTE Prior to removal, tag lead wires for installation. 1. Remove two screws (1), bracket (2), flange (3), and tapping plate (4) from heater housing (15). 2. Remove grommet (14) from hole (13) in heater housing (15) and slide up on lead (10). 3. Remove nut-assembled lockwasher (5), screw-assembled lockwasher (9), and lead (10) from preheater resistor (8). Discard nut-assembled lockwasher (5) and screw-assembled lockwasher (9). 4. Remove fuel tube (11) with preheat resistor (8) from burner (12). 5. Remove sleeve (6), nut (7), and preheat resistor (8) from fuel tube (11). Discard sleeve (6). INSTALLATION 1. Install preheater resistor (8), nut (7), and new sleeve (6) on fuel tube (11). 2. Install fuel tube (11) with preheater resistor (8) on burner (12). 3. Insert lead (10) through hole (13) in heater housing (15) and install on preheater resistor (8) with new screw-assembled lockwasher (9) and new nut-assembled lockwasher (5). 4. Install grommet (14) in hole (13) on heater housing (15). 5. Position tapping plate (4), flange (3), and bracket (2) on heater housing (15) and install with two screws (1). 6. Install coolant heater overheat switch and igniter (WP 0422 00). 7. Connect battery ground cable (WP 0126 00). 8. Release parking brake and remove wheel chocks (TM 9-2320-361-10).