Dry cleaning solvent SD-2, used to clean parts is potentially dangerous to personnel and property.
Do not use near open flame or excessive heat. Flash point of solvent 138F (59C).
b. Bolts, Nuts, and Screws - Check them all for obvious looseness, missing, bent, or broken condition. You can't try
them all with a tool, of course, but look for chipped paint, bare metal, or rust around bolt heads. If you find one you think Is
loose, tighten it, or report it to Organizational Maintenance.
c. Welds - Look for loose or chipped paint, rust, or gaps where parts are welded together. If you find a bad weld,
report it to Organizational Maintenance.
d. Electric Wires and Connectors - Look for cracked or broken insulation, bare wires, and loose or broken
connectors. Tighten loose connectors and make sure the wires are in good shape.
e. Hydraulic Lines and Fittings - Look for wear, damage, leaks, and make sure clamps and fittings are tight. Wet
spots show leaks, of course, but a stain around a fitting or connector can mean a leak. If a leak comes from a loose fitting
or connector, tighten it. If something is broken or worn out, report it to Organizational Maintenance.
3-5. Fluid Leakage.
It is necessary for you to know how fluid leakage affects the status of the hydraulic system. The following are definitions of
the types/classes of leakage you need to know to be able to determine the status of the mixer. Learn, then be familiar with
them and REMEMBER - WHEN IN DOUBT, NOTIFY YOUR SUPERVISOR!
Leakage Definitions for Crew/Operator PMCS
Equipment operation is allowable with minor leakages (Class I or II). Of course, consideration
must be given to the fluid capacity in the item/system being checked/inspected. When in doubt,
notify your supervisor.
When operating with Class I or II leaks, continue to check fluid levels as required in your PMCS.
Class III leaks should be reported to your supervisor or to Organizational Maintenance.
Seepage of fluid (as indicated by wetness or discoloration) not great enough to form drops.
Leakage of fluid great enough to form drops but not enough to cause drops to drip from Item being
Leakage of fluid great enough to form drops that fall from the Item being checked/inspected.