Section VI. TANK-AUTOMOTIVE COMPONENTS

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

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

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