Mk 76 Mod 5 Practice Bomb
The Mk 76 Mod 5 practice bomb (fig. 13-12) is
prepared for aircraft loading as discussed in the
Be extremely careful when handling a
practice bomb loaded with a signal. Jarring
or dropping the bomb may detonate the
signal. Do not, under any circumstances,
point either end of the bomb toward another
person. Loading personnel must not place
their bodies in line with the nose or tail end
of a bomb.
Remove the cotter pin and Mk 1 firing-pin
assembly from the nose. Inspect it for rust and
deformation. Ensure the firing-pin cup is not
deformed and the firing-pin point is below the
lip of its cup.
Inspect the blast tube for rust and obstructions.
Clean as required. When any obstructions are
noted, proceed as follows: Insert a plug gauge
SK923AS503 into the center cavity. The gauge
should slide into place until the shoulder rests
flush against the bomb. When the gauge
shoulder does not rest against the bomb, the
cavity is not clear. When the obstruction cannot
be removed, reject the bomb as unserviceable,
and dispose of it by following current in-
A signal cartridge must not be swollen or
deformed in any manner. The primer must
be flush with or slightly below the base of the
cartridge. If you attempt to install a
deformed signal, it can cause detonation.
Use extreme care when you handle a signal
cartridge. When a practice bomb is not used
after the signal has been installed, the signal
must be gently removed and replaced in the
original shipping container. The cartridge
can be reloaded and used later. Do not apply
pressure to force the signal cartridge or
firing pin assembly into the bomb because
the assembly could become deformed and
fire the signal.
With the firing pin assembly removed, elevate
the nose of the bomb. Insert the Mk 4 Mod 3 or
CXU-3A/B practice bomb signal, primer end
up, into the nose of the practice bomb. Slide it
gently into place. Do not use force. The base
Figure 13-12.Mk 76 Mod 5 practice bomb.