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TM 746-10
5-38. Truck Assemblies or Railway Car Trucks
d. Cover openings into the traction motors with
tape. Cover large openings with a double thickness of
greaseproof barrier material and secure in place with
a. Coat exposed machined surfaces with P-1.
tape.
b. Coat interior surfaces of journal boxes with P-
10. Seal openings into journal box lids with tape.
5-39. Brake Cylinders
c. Fill traction, motor-gear housings to the proper
level with operating lubricant.
Cushion cylinders with cellulosic cushioning material
and individually pack in triple-wall fiberboard boxes.
Section VI. TANK-AUTOMOTIVE COMPONENTS
the component. Items which require only physical and
5-40. Application
mechanical protection and do not require a preservative
shall be prepared per method III. Items which require
This section applies to tank-automotive and land
maximum protection from watervapor such as certain
mobility components of close-support equipment. This
electromechanical,
electrical,
and
hydroscopic
section is intended as general instructions for field use
components shall be prepared per method II.  Other
in preparing components for shipment and immediate
items which require watervaporproof protection shall be
use.
prepared per method IA. Items which require only water
resistant protection and items which require only a
5-41. General Instructions
preservative for protection from water shall be prepared
per method IC and method I, respectively.  Exterior,
Preparation of components for shipment should begin
unpainted, ferrous surfaces shall be preserved with thin
immediately  after  required  functional  testing  and
film preservative, grade 4 of MIL-C-16173. Unpainted
inspection to determine the condition of the item.
ferrous surfaces which will be protected from water by
a. Disassembly.
Components
will
be
sealed barrier material such as in methods II, IA, or IC
disassembled or reconfigured when necessary to meet
shall be preserved with preservative oil, VV-L800.
transport clearance requirements.  Components may
d. Packaging.  Each component which requires
also be disassembled when such disassembly will
mechanical or physical protection shall be packaged to
provide
for
more
efficient
and
economical
complete the required method of preservation and
transportation. A disassembled component should not
provide protection for the component.  Components
be shipped if the receiving activity will not be able to
should also be packed to protect other components in
reassemble the component.  Parts removed from a
the same shipment and to provide efficient handling.
component will be labeled and matchmarked to aid
Items protected by application of a preservative shall be
reassembly/disassembly.
wrapped in a barrier material conforming to type II,
b. Cleaning and drying.  Components should be
grade A, class 2 of MIL-B-121.  Small components
clean and free of foreign matter.  Critical surfaces
requiring cushioning shall be wrapped in PPP-C-1752.
should be cleaned to remove corrosion, soil, grease,
Small components requiring blocking shall be provided
perspiration,  and  any  acid  or  alkaline  residue.
with fiberboard pads conforming to type CF of PPP-F-
Petroleum base solvents should not be used on interior
320.
Small components shall be placed in bags
parts of air, oxygen, or vacuum systems, and petroleum
conforming to MIL-P-117 or placed in fiberboard boxes
solvents should not be used in hydraulic systems.
conforming to PPP-B-636.  The domestic class of
Cleaning methods should be per MIL-P-116. Cleaning
fiberboard is used inside bags, and weather-resistant
materials and cleaning operations must conform to safe
class is used outside bags.  Large components or
practices. Cleaning must be compatible with component
assemblies requiring method II protection such as
composition and intended use.
engines, transmissions, and final drives shall be
c. Preservation. Each critical surface susceptible
packaged in their reusable container, properly sealed,
to corrosion or deterioration by environmental conditions
and secured.  Large components and assemblies not
should be protected by application of compatible
having a reusable container shall be protected by barrier
preservatives per MIL-P-116.
Internal component
material
surfaces shall be preserved with operational fluids and
lubricants. Methods of preservation conforming to MIL-
P-116 should be applied per the chemical and physical
characteristics of
5-8

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