2-5. Exercising Recoil Mechanisms and Equilibrators Under Extreme Climatic Conditions.
a. The extreme temperatures of the arctic's and tropics will affect the rate of corrosive action.
b. The heat of the tropics will lower the viscosity of the hydraulic fluid, thereby causing the film of fluid between the
packings and sliding surfaces to dry out more quickly. Consequently, more frequent exercising will be required to maintain
the necessary film of fluid. An increase of 18'F has been found to approximately double the rate of corrosion due to
c. The freezing temperatures of the artics will also affect the efficiency of the fluid seal and packings.
d. It is impractical to prescribe the increased frequency at which recoil mechanisms should be exercised in various
climates. On hydropneumatic systems under extreme climatic conditions, special inspections must be made of the
surfaces of the recoil piston rod and cylinder on which the stuffing and piston packings rest when in battery position. This
inspection should be made while the recoil mechanism is being exercised, in accordance with instructions in paragraph 1-
3c. The frequency of exercising should be increased in accordance with the findings of the above inspections.