ARMY TM 9-6115-643-24
AIR FORCE TO 35C2-3-445-22
e. With fuel level sender arm resting freely in what would be an empty position, multimeter should indicate between
216 and 264 ohms.
f. Move fuel level sender arm up to what would be a full position and multimeter should indicate between 29.7 and
36.3 ohms.
g. Replace fuel level sender if indications are not as above.
h. Install fuel level sender, paragraph 2.89.4.
2.89.4. Installation.
a. Remove cover in fuel tank opening.
b. Clean, make flat and smooth mating surfaces to gasket (36, FIGURE 2-27) ensuring no foreign material enters
fuel tank. Apply sealant (item 19, Appendix C) to both sides of gasket (36).
c. Insert fuel level sender (35) and gasket (36) into fuel tank. Ensure float is in same position as removed.
d. Install screws (32), Washers (33), and flatwashers (34).
e. Connect electrical lead, remove tag, and dose Ieft side engine access door.
f. Connect negative battery cable. Close battery access door.
2.90. LOW LEVEL/AUXILIARY FUEL PUMP FLOAT SWITCH.
2.90.1. Inspection.
a. Shutdown generator set.
b. Open Ieft side engine access door.
c. Inspect low fuel Ievel/auxiliary fuel pump float switch (40, FIGURE 2-27) for loose connections and mounting, and
other damage.
d. Close left side engine access door.
2-90-2. Removal.
a. Shutdown generator set.
b. Open battery access door and disconnect negative battery cable.
c. Open left side engine access door, tag and disconnect low fuel Ievel/auxiliary fuel pump float switch (40, FIGURE
2-27) electrical connector.
d. Remove screws (37), Iockwashers (38), flatwashers (39), float switch (40), and gasket (41) from fuel tank.
e. Cover opening in fuel tank
2.90.3. Testing.
a. Shutdown generator set.
b. Remove low fuel level/auxiliary fuel pump float switch, paragraph 2.90.2.
c. Position float switch in vertical position, similar to position as installed in fuel tank
d. For the top float, set multimeter for ohms and connect positive lead to pin 2 and negative lead to pin 1 of float switch
electrical connector.
e. With upper or Iower float moving toward the down position, the multimeter should indicate continuity 1/4 inch before
float reaches the down position.
Change 1 2-131
