GENERAL INSPECTION.

Flush with clean, hot water, or steam.

c. Prior to disassembly of the vehicle, the

exterior parts of the equipment should be

h. The electrical system battery exterior surfaces

thoroughly cleaned to remove accumulated mud,

tar, and grease. This procedure will facilitate

should be cleaned with a weak solution of baking

soda and water. Apply the solution with a bristle

inspection and disassembly. For cleaning exterior

brush to remove any corrosive buildup on the

parts, use a vapor pressure spray rinse cleaner.

b a t t e r y cable clamps and terminals and battery

d. For cleaning the exterior of the engine frame

tray.

and hoods, use Gun, Engine, Kerosene Spray,

Stock No. 7900-402730, or equivalent. Use

i. When cleaning hydraulic system components,

Military

Cleaning,

Aircraft

Compound,

use petroleum-free solvents. Clean and dry parts

Specification MIL-C-25769, in a mixture consisting

thoroughly to make sure that no residue remains.

of one part compound with four to nine parts dry

I f a coating of preservative is required prior to

c l e a n i n g solvent, Federal Specification P-D-680.

reassembly, apply a light film of preservative oil,

MIL-O-6083. If

Allow application to remain on item surface for

Military

Specification

a p p r o x i m a t e l y 10 minutes before rinsing. Rinse

petroleum-free solvents are not available for

with hot or cold water under pressure. If available,

cleaning, use hydraulic fluid compatible with that

use hot water under 80 to 120 pounds pressure. An

used in the vehicle system.

ordinary garden hose with nozzle may be used if

other equipment is not available. Rinse thoroughly.

D o not use gasoline or other petroleum

base products to clean or preserve

Do not clean tires, lubricant seals, rubber

hydraulic system components.

h o s e s , o r electrical components with

preceding cleaning agent.

j, Wash painted surfaces of vehicle with a

solution consisting of l/4 lb. of soap chips, Federal

e. Electrical parts, such as coils, junction blocks,

Specification P-S-579, to 1 gallon of water.

switches, a n d w i r i n g , incorporating insulating

55. GENERAL INSPECTION.

materials should not be soaked or sprayed with

cleaning solutions. Clean these parts with a clean,

lint-free cloth moistened with dry cleaning solvent,

a. Examine bearings for rusted or pitted balls,

Federal Specification P-D-680.

races, or separator. Examine balls and races for

brinnelling, abrasion, a n d serious discoloration.

f. Oil and fuel tanks and similar reservoirs should

The following are causes for bearing rejection:

be flushed, using a spray gun and dry cleaning

solvent.

1 . Cuts or grooves parallel to ball or roller

rotation.

2. Fatigue pits (as opposed to minor machine

marks or scratches).

D o not use soap or alkalies for cleaning

tank interiors.

3 . Cracks detected during magnetic particle

inspection.

g . The cooling system radiator core should be

cleaned with steam or hot water. If sediment

Note

within the core cannot be completely removed by

this method, the core may be boiled in a solution

Excluding defects which may cause bearing

of sodium carbonate and water. Use a solution of

binding or misalignment, nicks or gouges

one pound of sodium carbonate, Federal

outside race load areas are not cause for

S p e c i f i c a t i o n O-S-571, to each gallon of water.

rejection.

5-2