Its caster wheels allow it to be maneuvered in any
Mk 21 Mod 0 Dolly
direction. Adjustable wheel assemblies provide
The Mk 21 Mod 0 dolly (formerly called the
bearing surfaces for cylindrical weapons from 9 to
universal dolly) is ideal for handling cylindrical mine
22 1/2 inches in diameter. When unlocked, the wheel
sections of various lengths and diameters. It is used for
assemblies permit rotation of the loads to positions
the general mines, as well as the various other sections
convenient for installing smaller components. Load
of the Mk 67 mine. Its height is adjustable, between
rotation is restricted by locking one of the wheel
18 1/2 inches and 28 inches, and its length can also be
assemblies (lock-wheel assembly) with a locking
adjusted, between 10 1/2 inches and 46 1/2 inches,
screw that seats in any one of the index holes in the
depending on the section supported. The Mk 21 dolly,
associated wheel support.
as shown in figure 2-13, is constructed of tubular
aluminum and has a capacity of 1,600 pounds. It is
The improved Mk 11 Mod 1 weapons dolly has a
equipped with lockable casters and clips that hold the
welded gusset on each wheel support to prevent
accessory extension tubes when they are not in use.
spreading. It also has support beams that run the entire
length of the dolly. This eliminates the tool tray found
AERO 51B MUNITIONS TRAILER
on the Mk 11 Mod 0 dolly, but gives better wheel
support handling of explosive sections of Mk 56 and
The Aero 51B munitions trailer is a flat-bed trailer
Mk 67 for the full length of the dolly. The Mk 11 Mod 0
used for intrabase transportation of small quantities of
mines and destructors between magazines, assembly
dolly is obsolescent.
shops, staging areas, airfields, and dockside locations,
The Mk 11 weapons dolly has an instruction plate
depending on the distance. The trailer, as shown in
that shows the proper wheel axle positions for various
figure 2-14, has an automotive-type chassis with two
diameter mines. Position locks under each end of the
axles and four single wheels. It is equipped with
dolly, anchor it to the deck, and permit it to be used as a
hydraulic-surge brakes, as well as mechanical parking
stationary work platform. A tie-down strap secures the
brakes. A tow bar and a cable harness are provided for
load, When handling crated mines, store the wheel
connection to any of a variety of tractors and trucks.
assemblies below the bed at each end of the dolly.
Accessory items (such as chocks, tie-down straps, and
BUCKLE AND
STRAP (2)
BLOCK
CLIP
ACCESSORY
TUBE
JACK (2)
TUBING
CASTER LOCK (4)
CASTER (4)
MNf02013
Figure 2-13.--Mk 21 Mod 0 dolly.
2-20
