TM 10-3950-672-10
6-1.4
Lubrication Points. A regular frequency of lubrication must be established for all lubrication points.
Normally, this is based on component operating time. The most efficient method of keeping track of lube requirements is
to maintain a job log indicating crane usage. The log must use the engine hourmeter to ensure coverage of lube points
that will receive attention based on their readings. Other lubrication requirements must be made on a time basis, i.e.,
weekly, monthly, etc.
All oil levels are to be checked with the crane parked on a level surface in transport position, and while
the oil is cold, unless otherwise specified.
On plug-type check points, the oil levels are to be at the bottom edge of the check port.
On all hoists with a check plug in the drum, the fill plug shall be directly on top of the hoist, and the check
plug level.
All grease fittings are SAE standard unless otherwise indicated. Grease non- sealed fittings until grease
is seen extruding from the fitting. One ounce (28 grams) of EP-MPG equals one pump on a standard 1.0 lb (0.45 kg)
grease gun.
Over lubrication on non-sealed fittings will not harm the fittings or components, but under lubrication will
definitely lead to a shorter lifetime.
On sealed U-joints, care must be exercised to prevent rupturing seals. Fill only until expansion of the
seals first becomes visible.
Unless otherwise indicated, items not equipped with grease fittings, such as linkages, pins, levers, etc.,
should be lubricated with oil once a week. Motor oil, applied sparingly, will provide the necessary lubrication and help
prevent the formation of rust. An Anti-Seeze compound may be used if rust has not formed, otherwise the component
must be cleaned first.
Grease fittings that are worn and will not hold the grease gun, or those that have a stuck check ball, must
be replaced.
Where wear pads are used, cycle the components and relubricate to ensure complete lubrication of the
entire wear area.
6-1.5
Lubrication Chart. The following describe the lubrication points and gives the lube type, lube interval,
lube amount, and application of each. Each lubrication point is numbered, and this number corresponds to the index
number shown on the Lubrication Chart, Figure 6-1.
Index No.
Description/Lube Requirement
1
Hook Block Swivel Bearing.
Lube Type - EP-MPG
Lube Interval - Weekly
Lube Amount - Until grease extrudes
Application - 1 grease fitting
6-5
