TASK 70-21-23-110-053
1 . General.
A.This procedure is for general hand-wipe cleaning of metallic parts, both titanium and non-titanium hardware. For hand-wipe cleaning of composite materials, refer to procedure TASK 70-46-01-350-030, Masking and Cleaning of Epoxy and Polyester Matrix Thermosetting Composite Materials.
B.This procedure may be used as an alternate to TASK 70-21-01-110-001, Cleaning Method No. 1 - Solvent Degreasing, or TASK 70-21-22-110-042, Cleaning Method No. 22 - Light Duty Aqueous Cleaning, whenever localized hand-wipe cleaning would be an effective alternative to cleaning the entire part by one of the other methods.
C.Cleaners should be applied to the wipe cloths from dispensers that prevent contamination of the working fluid.
D.Some cleaners will require post-rinsing with water and others are very slow to dry. These conditions must be considered when using these products before Fluorescent Penetrant Inspection (FPI). Process known defect standards or parts with the selected cleaner if used prior to FPI to ensure that the process capability is maintained.
2 . Equipment.
Subtask 70-21-23-110-531
E.Proper Personal Protection Equipment shall be used and shall include, but not be limited to, protective gloves and eye wear. Specific equipment for safe handling will be described in the manufacturer's Material Safety Data Sheet for the specific cleaner.
F.Hand-wipe cleaning shall be performed in an area with proper ventilation.
G.Various types of bristle brushes for part configuration or cleaning pads C10-010   may be used in addition to the wiping cloths C10-182  , clean, white, lint-free cotton cloths, or unsized cheesecloth.
3 . Materials.
Subtask 70-21-23-110-532
NOTE:
The following materials are required for the application of this process.
 
Solvents for Wipe Procedure - Table 1
 
Consumable Product
No.
 
Methyl-Ethyl-Ketone
C04-001  
 
Stoddard
C04-002  
 
Acetone
C04-003  
 
Isopropyl Alcohol
C04-035  
 
50/50 Toluene/Isopropyl Alcohol
C04-036  / C04-035  
 
Methyl-Propyl-Ketone
C04-196  
 
MagChem Diestone MTK
C04-197  
 
Positron
C04-198  
 
Selig CE-SX-94, GB-SX-94, L-SX-94
C04-199  
 
SkyKleen 1000 Aviation Solvent
C04-200  
 
Turco 4460-BK
C04-201  
 
Turco 6869
C04-202  
 
Bioact 105 Precision Cleaner
C04-251  
 
Supersolve AS
C04-256  
 
MagChem Diestone MSK
C04-260  
 
Diestone DLS
C04-281  
 
Novec HFE-7100
C04-261  
 
Vertrel XF
C04-262  
 
Lotoxane Fast
C04-269  
 
Magnaflux SKC-S
C04-282  
 
Supersolve (Aerosol)
C04-284  
 
Lotoxane Fast Wipes*
C04-285  
 
SkyKleen 2000 Aviation Solvent
C04-303  
 
NOTE:
* Lotoxane Fast Wipes consists of cloths impregnated with C04-269  Lotoxane Fast solvent.
 
Aqueous Cleaners for Spray or Wipe Procedure - Table 2
 
Consumable Product
No.
Concentration
Rinse Required?
 
Gas Path Cleaner Type II RTU
Note 1
C04-140  
As Received
Yes
 
Gas Path Cleaner Type II
Note 2
C04-140  
20%
Yes
 
Turco 6780
C04-203  
Full Strength
No
 
Ardrox Aviaclenz 6077 Window Cleaner Plus
C04-204  
Full Strength
No
 
MagChem Evasol
C04-205  
Full Strength
No
 
Nuvite Nu-Gear-Sc
C04-206  
20-25 v/v
Yes
 
Bio-T-Max
C04-207  
Full Strength
Yes
 
NOTE 1: Type III RTU cleaners that meet MIL-PRF-85704C may be used in place of the Type II RTU cleaners for this procedure.
NOTE 2: Type III cleaners that meet MIL-PRF-85704C may be used in place of the Type II cleaners for this procedure.
4 . Procedure.
Subtask 70-21-23-110-533
H.Wipe the part with cloth saturated with one of the cleaners identified in Table 1. When using cleaners identified in Table 2, spray or wipe application may be used.
NOTE:
Various types of bristle brushes suitable for the part configuration or cleaner pads C10-010   may be used in addition to the wiping cloths to enhance the cleaning process. When using brushes or cleaning pads, a final wipe of the part surface should be performed with a cloth C10-182    saturated with the cleaner being used.
CAUTION:
TITANIUM PARTS MAY BE DAMAGED WHEN EXPOSED TO CHLORIDE CONTENT BEYOND ACCEPTABLE LIMITS.
I.Flush the part completely with clean water when indicated in Table 2 as follows:
(1)If this procedure is used on titanium, titanium is subject to the following requirements regarding chloride. Refer to TASK 70-00-05-800-006, Water Types (paragraph 3., Definitions and Test Protocol).
(a)If parts will be exposed to subsequent processing that operates above 500°F (260°C) (for example, welding or heat treating), the final rinse water used on the parts must not exceed 50 ppm chloride (10000 ohm-cm minimum resistivity, 100 Microsiemens/cm maximum conductivity).
(b)For parts that will not be exposed to subsequent processing that operates above 500°F (260°C), the final rinse water used on the parts can be potable water that must not exceed 250 ppm chloride (1800 ohm-cm minimum resistivity, 550 Microsiemens/cm maximum conductivity).
J.Dry the part with one of the cloths specified in Subtask 70-21-23-110-531, Equipment.
K.Blow dry with clean, dry air.
5 . Quality Assurance.
Subtask 70-21-23-110-534
L.Visually check the part for cleanliness.
M.Repeat the process if necessary.