TM-1-1500-344-23-2
AIRCRAFT VOLUME II
TECHNICAL MANUAL; CLEANING AND CORROSION CONTROL
APRIL 2009
TM-1-1500-344-23-2 - Page 169 of 240
NAVAIR 01-1A-509-2
TM 1-1500-344-23-2
15 April 2009
c. Wash with a solution of one part aircraft cleaning
compound (MIL-PRF-85570 Type II) in 14 parts fresh
water.
d. Rinse thoroughly with fresh water.
e. Dry with cloth, paper towels or air pressure less
than 10 psi.
Compound, Corrosion Preventive
4
MIL-PRF-81309
f. Where possible, flush with water displacing CPC
(MIL-PRF-81309 Type II). Preserve and package blade
before sending to the appropriate ACC/SPM for
engineering evaluation and repair.
9-8.2.9. Helicopter Transmission, Rotor Head, and
Rotor Hub. Helicopter transmission, rotor head, and
rotor hub cases are often constructed of magnesium.
Magnesium parts exposed to salt water or fire fighting
chemicals require immediate and thorough
decontamination and preservation.
9-8.2.9.1. External Surface Contamination. Treat
helicopter transmissions, rotor heads, and rotor hubs
with external surface contamination as follows:
a. Rinse with fresh water.
Compound, Aircraft Cleaning
2
MIL-PRF-85570
b. Wash with a solution of one part aircraft cleaning
compound (MIL-PRF-85570 Type II) in 14 parts fresh
water and rinse thoroughly.
Compound, Corrosion Preventive
4
MIL-PRF-81309
c. Liberally apply water displacing CPC
(MIL-PRF-81309 Type II) to all affected areas.
d. Lubricate all pressure lubrication points to
completely displace all contaminated lubricant.
9-8.2.9.2. Internal Surface Contamination. If internal
surface contamination of helicopter transmission rotor
heads and gearboxes is suspected, immediately contact
the appropriate ACC/SPM for assistance and
decontamination procedures. Treat helicopter
transmissions, rotor heads, and rotor hubs having
internal contamination as follows:
a. Drain all fluids. Partial disassembly is authorized
to accomplish thorough draining. Ensure that pressure
systems are drained.
b. Thoroughly flush all surfaces and passages with
fresh water.
Compound, Aircraft Cleaning
2
MIL-PRF-85570
c. Flush all surfaces and passages with a solution of
one part aircraft cleaning compound (MIL-PRF-85570
Type II) in 14 parts fresh water.
d. Thoroughly rinse all areas with fresh water.
e. Allow to drain thoroughly.
Compound, Corrosion Preventive
4
MIL-PRF-81309
f. Liberally apply water displacing CPC
(MIL-PRF-81309 Type II) to all surfaces. This may be
accomplished by fill and drain (preferred), flushing, or
spraying. With the housing full of CPC, rotate the main
shaft approximately five revolutions. After the CPC has
remained in the housing for 4 hours, drain and replace
plugs.
g. Service transmission in accordance with
maintenance instruction manuals (MIMs) if going back
in service or leave as preserved if shipping out.
h. Lubricate all pressure lubrication points to
completely displace all contaminated lubricant.
9-8.3. AIRCRAFT FUEL SYSTEMS. For emergency
treatment of aircraft fuel systems contaminated with
seawater through means other than water, crash, or fire
damage, refer to NAVAIR 01-1A-35 (Navy) or
Appendix B, Section V (Army).
9-15/(9-16 Blank)
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