ensure thorough purging of the bearing. Ensure all the old grease is purged from the assembly.
Immediately collect a swab of the purged grease using a tongue depressor and a sampling bottle.
The sampling bottle should be filled from one half to full for an adequate sample. Failure of a
swashplate to accept grease requires investigation and correction prior to releasing aircraft for
flight.
(4) Once the sample is taken, the bottle label should be filled out as completely as possible
to avoid confusion with other grease samples.
(5) Submit the grease sample to the AOAP laboratory with a completed DD Form 2026 or
DA Form 5991-E.
(6) Record the AOAP sampling action on DA Form 2408-20, Oil Analysis Log,
maintained for the swashplate, in accordance with DA Pamphlet 738-751.
d. Scissors and Sleeve Assembly. Visually inspect parts of the scissors hub assembly and
boot for signs of heat. Any heat discoloration or distortion of components should be reported
immediately to maintenance personnel. After the visual inspection, follow the same procedures
outlined above for the swashplate.
e. New Oil Samples. When a unit begins to use a new `lot' or batch number of oil, a sample
of the clean, new oil shall be submitted to the AOAP laboratory for analysis. This will enable
the laboratory to make adjustments for any changes in the lubricant chemical formulation of
metallic compounds that may have been introduced at the refinery as oil additives. Indicate on
the accompanying Oil Analysis Request form that the sample is new oil and not a sample from a
component. Also indicate which operating units will be using the new oil supply.
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