MIL-DTL-2845E (SH)
0.187-inch thickness. The canvas or rubber shall be secured to the strap to prevent
movement during transportation. Blade edge guards shall be free from damage or
defects prior to installation. Propellers less than 30 inches in diameter and
crated shall have the edges covered with a split heavy rubber hose or equivalent to
protect the blade edges. The split rubber hose shall be secured to the propeller by
any suitable means.
3.14.1.5 Repairs to preservation. When preservation is damaged, the damaged
area shall be inspected in accordance with NAVSEA S9245-AR-TSM-010/PROP and the
preservation repaired. Damage to the protective coating specified in 3.14.1.3 shall
be repaired by removing an area surrounding the damage by 1 inch in all directions.
The preservative coating shall be re-applied as specified in 3.14.1.3. Damaged
edge guards that may result in damage to the propeller shall be replaced. Damaged
straps and hub end closures shall be replaced if inadequate protection of the
propeller will result. Damaged areas shall be tagged or marked "DAMAGE
INVESTIGATED" with the date and investigating activity noted on the tag.
3.14.2 Propeller packing.
3.14.2.1 Controllable-pitch and bolted-on blades. Controllable-pitch
and bolted-on blades preserved as specified above shall be packed in hub sets.
References to eye bolts and propeller diameters specified herein shall be
disregarded. Multiple containers for a single hub set are required when the
size and/or weight of the blades is to large to permit handling by forklift.
Wood materials utilized for container construction shall be as specified in
3.8.2.2 for multiple trip use. Containers shall be assembled with corrosion
resistant (stainless steel) screws. Viewing ports shall be added to two sides
of the crate and shall be hinged with corrosion resistant (stainless steel)
hinges to permit visual examination of the crate interior. The viewing ports
shall be capable of being secured during transportation and storage.
Controllable pitch and bolted on blades shall be positioned in crates with the
blade serial number and stock number up. Crate tops shall be attached with
corrosion resistant (stainless steel) hex head bolts to permit removal and
reuse of the container top. The exterior of each container shall be marked as
specified in 3.14.4.4. Packing of controllable-pitch and single bolted-on
blades is shown on figure 3.
3.14.2.2 Monobloc. Propellers, 40 pounds and greater, shall be
individually packed and provided with lifting eye bolts to facilitate
propeller handling, including placement and removal from its shipping and
storage container. Monobloc propellers shall be marked as specified in
3.14.4.2. Container figures applicable to propellers will require modification
to accommodate propeller eye bolts.
3.14.2.2.1 Propellers, 30 inches in diameter and less. Propellers, 30
inches in diameter and less, shall be multiple or individually packed in
multiple-trip containers (see 6.2) as follows:
(a)
Multiple pack. - Propellers shall be packed in wood boxes (see
figure 4) in accordance with PPP-B-621, class 2, style 2, for type
3 load. Box components shall be joined by corrosion resistant
(stainless steel) screws. Wood materials utilized for container
construction shall be as specified in 3.8.2.2 for multiple trip
use. Sheathing, ends, and cleats shall be not less than 1-inch
lumber. A diagonal cleat to the same size as the regular cleats
shall be used on each end of the box. One intermediate set of
inside cleats or battens of not less than nominal 1- by 4-inch
lumber shall be nailed and clinched to the sides, top, and bottom
midway between the ends. Hubs of propellers shall be fitted with
suitable wood cones with drilled centers to fit a suitable tie
bolt on which propellers shall be strung. Tie bolts shall be
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