Q4-55.
When applying the nylon barrier of a
NOTE: The use of nitrogen for pressure testing the
rubber-type bladder fuel cell, you should use
fuel system is recommended since nitrogen is an inert
what method of application?
gas, and therefore presents no explosive hazard when it
is introduced into a fuel cell containing fuel vapors. A
Q4-56.
The milled skins of an integral fuel cell are
source of dry air is not recommended because it would
normally fastened to the aircraft by what
increase the ratio of oxygen to fuel vapor in the cell, and
means?
the possibility of an explosion would be increased.
Q4-57.
A fuel leak that reappears 30 minutes after it
Suitable hoses and fittings to connect the testing
is wiped dry is classified as what category of
equipment to fuel the system
leakage?
A 0 to 5 psi pressure gauge installed downstream
Q4-58.
What is the first step you should take to stop a
of the nitrogen supply
fuel leak in an integral fuel cell?
Miscellaneous plugs and caps for blocking
Q4-59.
To allow the gun piston to return before
various lines and fittings
another cycle can begin, the trigger of a
sealant injector gun must be released
Q4-53.
The self-sealing fuel cells now in naval
approximately how often?
service are made up of what total number of
primary layers of material?
Q4-60.
What gas is used to pressure test a repair
made on an integral fuel cell?
Q4-54.
What is the main advantage of a bladder-type
fuel cell over a self-sealing fuel cell?
4-52
