TM 5-4610-218-12
b. Preventive Maintenance. The preventive
b. Loading by Lifting.
maintenance services (paragraph 4-14) will be per-
(1) If a crane with a lifting capacity in excess
formed on eahc major item of equipment and each
of 24,000 pounds (10,891.20 kg) is available, the
group of minor items of equipment when the equip-
construction of a loading ramp is not necessary.
ment is initially placed in limited storage. Required
(2) Attach the sling assembly as illustrated in
maintenance will be performed promptly to insure
that the equipment is mechanically sound and
ready for immediate use.
CAUTION
c. Cleaning.
(1) Backwash the diatomite filter elements
Before starting to load the equipment,
throughly (paragraph 2-7).
be sure there are no over head wires
and cables in the way. Check for hoist
(2) Clean or flush all mud and dirt from the
and swing clearances.
unit and remove all chemicals from the tanks.
(3) Wash the unit with clean soapy water and
(3) Lift the unit a few inches off the ground to
flush it with clear water.
test for balance and crane capacity and operation.
(4) Drain the water from the pumps, and flush
(4) If the balance is correct the crane is oper-
the pump housing with clean water.
ating properly, continue the lift until the unit is
higher than the height of the carrier. Swing the
(5) Drain the gasoline from the engines of the
unit over the carrier and lower it into place slowly
pump and generator if this equipment is with the
and remove the slings.
water purification unit.
(5) Remove the slugs and secure the truck to
(6) Drain the fabric tanks thoroughly and
the carrier as in paragraph 4-98d below.
clean them with soap and water, rinse them with
clean filtered water and dry thoroughly.
c. Loading by Ramp.
(7) Clean all miscellaneous items, such as fit-
(1) If a permanent ramp is not available, a
tings, tools, and hoses.
temporary ramp must be constructed from the
ground to the carrier. Use sufficiently heavy mate-
(8) Clean all external metal surfaces of the
rial. Use at least 6' x 6' (1.829 x 1.829 m) timbers,
trailer and van body with dry cleaning solvent P-D-
cleated together side-by-side, for each tread. Make
680 or by steam cleaning. Dry thoroughly after
the incline angle as gradual as practical and sup-
washing and cleaning.
port the ramp planks by blocking along their
lengths to avoid sagging or slipping.
CAUTION
(2) Pull or push the trailer up the ramp on the
Do not use cleaning solvent on rubber
carrier using any feasible means available which
will not damage the unit. Follow up the forward
tires and electrical insulation. It is
highly destructive to these items. Pro-
movement of the trailer by chocking behind the
wheels as it moves up the ramp.
tect all electrical components from
steam cleaning by sealing openings
d. Blocking and Lashing. Block the wheels of
with pressure-sensitive tape.
the trailer securely by placing a block 8 inches
(20.32 cm) high, sloped to fit the contour of the
(9) If the trailer or van shows evidence of rust
wheel, in front and back of each wheel. Fasten the
or corrosion, clean it by wire brushing, buffing,
blocks securely to the floor of the carrier. Lash the
sanding, or scraping. After removing rust, or corro-
unit down tight on the carrier with heavy wire or
sion, wipe the area with a lint-free cloth moistened
wire rope. Utilize the lifting eyes and the lunette
in dry cleaning solvent P-D-680.
for attaching the tiedowns.
purification unit are made of nonferrous metals and
4-99. Preparation and Limited Storage of Water
need not be protected against rust, however, a light
Purification Unit.
coat of oil or permanent type corrosion preventative
a. Inspection. Make a complete inspection of
should be sprayed or painted on the shafts, exposed
the water purification unit as described in para-
gears, and threaded areas. Paint all surfaces where
graph 4-14.
the paint film has been removed.
4-175
