You can get lubricants in three forms. hey are fluids, semisolids and solids. Additives improve the physical properties or performance of a lubricant. We all know that oils are fluids, and greases are semisolids. You probably think of graphite, molybdenum disulfide, talc, and boron nitride as additives. In fact, they are solid lubricants. A solid lubricants molecular structure is such that its platelets will readily slide over each other. Solid lubricants can be suspended in oils and greases.

There are many different types of approved lubricants in use for naval aircraft. Because the lubricants used will vary with types of aircraft and equipment, it is impractical to cover each type. Some of the more common types are described in table 3-5.

Different types of lubricants maybe applied by any one of several methods. Common methods are by grease gun, by oil/squirt cans, by hand, and by brush. 

GREASE GUNS. There are numerous types and sizes of grease guns available for different equipment applications. The lever and one-handed lever guns are two of the most common types in use. The grease gun may be equipped with a flexible hose instead of a rigid extension. Different nozzles can be attached to the

Table 3-5.Common Military Lubricants and Their Use








Figure 3-13.Types of grease guns.

grease guns for different types of fittings. See figure 3-13.

OIL/SQUIRT CAN. The oil/squirt cans are used for general lubrication. Always use the specified oil for the part being lubricated. Before using an oilcan, always check to make sure the oil can contains the proper lubricant.

HAND. This method of lubrication is generally used for packing wheel bearings. It involves using grease in the palm of your hand to pack the bearings. BRUSH.This method of lubrication is used when it is necessary to cover a large area, or for coating tracks or guides with a lubricant.