MIL-DTL-1213F
3.3.2.1.1 Cup. The cup shall be provided with a sturdy cover-locking spring to prevent the cover from
being shaken loose by vibration.
3.3.2.1.2 Base. The base shall be provided with two inside vertical grooves or ratchets, located 180°
apart against which the locking spring of the cup shall bear in order to provide a proportioning guide for
manually feeding grease and also to prevent change of position from vibration.
3.3.2.2 Non-Ratchet design. The non-ratchet design shown in MS35758 is acceptable.
3.3.3 Automatic feed (Type II). The design of automatic feed grease cups is as specified in MS35759.
3.3.3.1 Spring operated with tee handle (Class 1, Style 1).
3.3.3.1.1 Cup and cap. The cap shall be center drilled for passage of the threaded stem of the
plunger. The shank of the cup shall be drilled for a slotted plug or similar device securely contained to
regulate the flow of grease.
3.3.3.1.2 Plunger. The grease cup shall be provided with a plunger and threaded stem. The plunger
shall be actuated by a conical, open-end spring of sufficient strength to maintain a flow of grease. The
base of the plunger shall be provided with a non-metallic washer, snug fitting and securely placed to
prevent leakage of grease.
3.3.3.1.3 Tee handle. Travel of the plunger shall be controlled by a tee handle, threaded to conform
to the plunger stem threads. The tee handle shall be provided with a spring-loaded device to prevent
change of position from vibrations.
3.3.3.2 Spring operated without tee handle (Class 1, Style 2).
3.2.3.2.1 Cylinder. The cylinder shall be vented at the top. The lower end shall be threaded for
screwing it into the housing.
3.2.3.2.2 Housing. The housing shall be threaded at the top for screwing in the cylinder. A grease
fitting shall be screwed into the side.
3.2.3.2.3 Protective valve. The grease cup shall be provided with a protective valve screwed into the
bottom of a wiper disk seal. The seal and valve shall be actuated by a conical spring of predetermined
pressure. When it is the manufacturer s practice to furnish springs of different strengths according to
application, then shall be furnish one spring of each strength with every grease cup, with suitable
instructions for their application included in the unit package.
3.2.3.3 Diaphragm operated (Class 2).
3.2.3.3.1 Cylinder. The cylinder shall be vented at the top. The lower end shall be threaded for
screwing it into the housing.
3.2.3.3.2 Housing. The housing shall be threaded at the top for screwing in the cylinder. A grease
fitting shall be screwed into the side.
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