(2) EFS -- IAW EFS Maintenance Instruction UH--1 Helicopter, paragraph 5.4.
b. Gain access to aft center fuel cell access door.
(1) Non--EFS -- TM 55--1520--210--23P--2, figure 328, item 84.
(2) EFS -- IAW EFS Maintenance Instruction UH--1 Helicopter, figure 20, item 2.
c. Disconnect electrical leads and vent line from connectors on aft center fuel cell access door.
d. Non--EFS only.
(1) Remove access door, tilting and turning as necessary to allow attached fuel quantity transmit-
ter and float switches to pass through access port.
(2) Cover exposed open port.
e. EFS only.
(1) Disconnect frangible fittings IAW EFS Maintenance Instruction UH--1 Helicopter, figure 19,
items 2 and 3, from aft center fuel cell access door.
(2) Detach access door by removing four retainers, eight bolts, washers, sixteen screws and
(3) Pull the access door out approximately 3 1/2 inches and remove bolts and washers (4 each)
from upper and lower fuel quantity transmitter support brackets. Disconnect electrical leads and carefully re-
move access door. Remove fuel quantity transmitter and mounting brackets from fuel cell. Cover exposed
Examples of chafing fuel probe wires can be found by accessing the
utility helicopter web site at URL www.uhpo.redstone.army.mil. After
accessing site, go to SAFETY, then Aviation Safety Action Mes-
sages (ASAM). Access to the web site is controlled. Procedures to
obtain logon ID are accessible by clicking the register button.
f. Inspect both fuel quantity transmitter wire leads and the mounting bracket P/N 5340--UH--1--6821,
(TM 55--1520--210--23P--2, figure 328, item 99) for signs of chafing. Because fuel quantity transmitters are
sometimes replaced, chafing may not be evident on wire leads but brackets may show signs of chafing from
a previous installation.
g. If wire leads exhibit worn or chafing insulation, accomplish the correction of paragraph 9.a.
h. Wire leads that do not exhibit worn or chafed insulation must still be protected from future chafing
a. If wire leads exhibit worn or chafed insulation, replace fuel quantity transmitter, P/N
205--061--633--13, (TM 55--1520--210--23P--2, figure 328, item 107) with serviceable one from supply. Ac-
complish the installation of plastic spiral wrap tubing per paragraph 9.b. prior to installing the fuel quantity
transmitter on the aircraft.
b. For all new and existing fuel quantity transmitters with wires not exhibiting worn or chafed insulation,
install plastic spiral wrap tubing, identified in paragraph 10.c. as follows:
(1) Electrical connectors should be disconnected at the access panel.