TM 55-1560-307-13&P
3-23.
FUEL FLOAT ASSEMBLY. Replace.
This task covers:
a. Removal.
b. Inspection.
c. Installation.
INITIAL SETUP
Tools: 3/4 and 1/4 in. Wrench, 24 in.
Adjustable Wrench, Putty Knife
Steel Measuring Tape
Materials/Parts:
Packing Preformed (79, 80, Fig C-3),
Appx C
Float Switch (83, Fig C-2), Appx C
Sealant (item 15, Appx D)
MIL-S-8802E/3, Type II, Class B-2
Equipment Conditions:
Refer to Figure 3-13.
Tank must be empty and separate
from other tanks.
Tank access cover removed.
Tank grounded.
Tank must be purged. Refer to
Chapter 3, paragraph 3-25.
GENERAL SAFETY INSTRUCTIONS
WARNING
Injury to personnel and equipment
may occur if the purging maintenance
procedure above is not performed.
The fuel vapor and air mixture in the
tank can cause a violent explosion
setoff by sparks from tools being
dropped in tank.
REMOVAL
1.
Remove sealant with putty knife.
2.
Remove tank plug (5) using adjustable wrench.
3.
Disassemble on workbench. Refer to Appx C,
Figure C-2.
4.
Remove nuts (1), washers (2), screws (3) from
receptacle (4).
5.
Remove nuts (6), bracket (7), and packing (8).
6.
If defective, replace float switch (9) as follows:
a.
Unsolder wires from receptacle (4).
b.
Remove float switch from tubes (10 & 11), and
remove packing (12).
INSPECTION
1.
Inspect
electrical
wire
harness
for
frayed
insulation, broken wires, or loose pin to wire connection.
2.
Test float switch (9), replace if
defective. Refer to step (6) above.
ASSEMBLY/ INSTALLATION
1.
Install packing (12) on float switch (9), and guide
electrical wires through tubes (10 & 11).
2.
Install nut (6), packing (8), plug (5), bracket (7).
Do not tighten any of the nuts (6) onto plug (5) at this
time.
3.
Solder wires to receptacle (4) pins, and install
screws (3), washers (2), and nuts (1).
4.
Seal areas with sealant (item 15,
Appx D).
5.
Install assembled components in tank and tighten
tank plug (5).
6.
Adjust tube (10) to meet 2.5 inch clearance
between float (9) and bottom of tank.
7.
Tighten nuts (6) after adjustment, and seal center
of tube (10) and entire area around plug (5) with sealant
(item 15, Appx D).
3-34
