a detachable handle, a base (3), a drum (2), and
worm wheel assembly (l), a worm (8), a shaft (4),
and a set of bevel gear (5), a ratchet (7), an
operating mechanism, a cable retainer, and a
spring-loaded retractor used to lay in or release the
ratchet lock (6). The base of the winch is bolted to
the stanchion and provides drum support for the
worm shaft, a bushed port for the operating
mechanism, and an opening for the retractor.
The worm wheel is pinned to the drum and is
provided with bushings and a retainer to lock it to
the drum shaft. The worm is keyed to the common
shaft and engages the worm wheel. The common
shaft (4), rotating in a ball bearing at one end,
passes through the shaft supports to receive the
larger of the bevel gears. The large bevel gear and
the ratchet are a composite assembly and are
mounted on the square end of the common shaft.
The large bevel gear engages the smaller bevel gear,
which is threaded and pinned to the shaft of the
operating mechanism that passes through the base
of the winch. On the same center line but below
the bevel gears, the spring-loaded retractor passes
through the base to engage that ratchet.
With the pawl handle inserted in the operating
mechanism and held, the retractor is pulled out
until the lugs clear the slots. The retractor is then
turned to engage the lugs in the opposing short slots
to hold the retractor out of the ratchet. The handle
may now be turned clockwise to tension or
counterclockwise to slacken. The energy of the
handles turning is transmitted through the set of
bevel gears to the common shaft to rotate the worm.
Rotation of the worm engages the worm wheel
pinned to the drum and tensions or slackens the
The deck winches, through the tensioning
pendants, provide a means of tensioning the lower
loading strap of the barricade webbing.
8. Vent valve assembly
3. Front cap
10. Piston rod gland
4. Rear cap
11. Piston gland
5. Piston rod
Figure 3-37.Hydraulic cylinder assembly.