TM 9-2320-260-34-2
17-9. ENGINE COOLANT HEATER FUEL TUBE AND PREHEAT RESISTOR REPLACEMENT
THIS TASK COVERS:
b. Installation
a. Removal
MATERIALS/PARTS
APPLICABLE MODELS
Sleeve (Appendix D, Item 508)
All
Screw-assembled lockwasher (Appendix D, Item 388)
TEST EQUIPMENT
REFERENCES (TM)
Multimeter (Appendix B, Item 115)
TM 9-2320-260-34P-2
TOOLS
EQUIPMENT CONDITION
General mechanic's tool kit
q Engine coolant heater fuel control valve removed
(Appendix B, Item 1)
Tool kit, electrical (Appendix B, Item 106)
q Engine coolant heater overheat switch and igniter
removed (para. 17-8).
NOTE
Tag wires for installation.
a.Removal
1. Remove two screws (l), 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
preheat resistor (8). Discard screw-assembled lockwaeher (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).
b. Installation
1. Install preheat resistor (8), nut (7), and new sleeve (6) on fuel tube (11).
2. Install fuel tube (11) with preheat resistor (8) on burner (12).
3. Insert lead (10) through hole (13) in heater housing (15) and install on preheat resistor (8) with new
screw-assembled lockwasher (9) and 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).
17-22
