FED-STD-791 Lubricants, Liquid Fuels, And Related Products, Testing Method OfThis test method standard is composed of standard test methods for sampling, inspecting and testing lubricants, liquid fuels and related products. It is issued pursuant to the Federal Property and Administration Services Act of 1949, as amended and its application to the purchase of commodities referred to herein is mandatory on all Federal agencies.

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'�NOTE:This draft dated 15 April 2006' by DasH - Page 28 of 460

FED-STD-791D

6.3 Remove the worker from the machine, making certain that plunger is pushed all the

way down.

6.4 Open the vent cock and insert the thermometer as in "Procedure for Worked

Penetration" of ASTM D 217.

6.5 Place grease worker in the water bath, bring temperature of sample to 25� " 1�C (77�

" 2�F) and determine worked penetration in accordance with ASTM D 217.

7. CALCULATIONS

7.1 This section is not applicable to the test procedure.

8. REPORTING

8.1 Report penetration after mechanical working as determined in paragraph 6.5.

9. PRECISION

9.1 Precision data have not been developed for this method.

Method Prepared By:

Navy - NADC - 1986