Solvent cleaning compound MIL-PRF-680 Type III is an environmentally compliant and
low-toxic material. However, it may be irritating to the eyes and skin. Use protective gloves
and goggles. Use in well-ventilated areas. Keep away from open flames and other
sources of ignition. Failure to do so may result in injury or death to personnel.
Improper cleaning methods and use of unauthorized cleaning solvents may injure
personnel and damage equipment. Refer to TM 9-247, Materials Used for Cleaning,
Preserving, Abrading, and Cementing Ordnance Materiel and Related Materials Including
Chemicals, for correct information.
Fire extinguishers should be placed nearby when using solvent cleaning compound.
Cloths or rags saturated with solvent cleaning compound must be disposed of IAW
authorized facilities' procedures.
Eye shields must be worn when cleaning with a wire brush. Flying rust and metal particles
may cause injury.
Particles blown by compressed air are hazardous. Use a maximum of 30 psi (207 kPa)
when cleaning components. DO NOT exceed 15 psi (103 kPa) nozzle pressure when
drying parts with compressed air. DO NOT direct compressed air against human skin.
Failure to follow this warning may result in injury to personnel. Make sure air stream is
directed away from user and other personnel in the area. To prevent injury, user must
wear protective goggles or face shield.
1. Cleaning instructions are the same for the majority of the parts and components of the H100C.
2. The importance of cleaning must be thoroughly understood by maintenance personnel. Great care and effort
are required in cleaning. Dirt and foreign material are a constant threat to satisfactory maintenance. The
following should apply to all cleaning, inspection, repair, and assembly operations.
a. Clean all parts before inspection, after repair, and before assembly.
b. To prevent contamination, hands should be kept free of any accumulation of grease, which can collect
dust, dirt, or grit.
After cleaning, all parts should be covered or wrapped to protect them from dust and dirt. Parts that are
subject to rust should be lightly oiled.
3. External Engine Cleaning.
a. Protect all electrical equipment that could be damaged by steam or moisture before steam cleaning.
b. Cover all openings before steam cleaning.
After cleaning, dry and apply a light coat of oil to all parts subject to rust.
d. Clear out all tapped (threaded) holes with compressed air to remove dirt and cleaning fluid.
4. Cleaning Disassembled Parts.
a. Place all disassembled parts in wire baskets for cleaning.
b. Dry and cover all cleaned parts.
Place parts on or in "racks" and hold for inspection or repair.
d. All parts subject to rusting must be lightly oiled and wrapped.
e. Keep all related parts and components together. Do not mix parts.