_______
CAUTION : DO NOT WASH ENGINE AT TEMPERATURE BELOW 14 DEG.F (-10 DEG.C).
_______
1. Reason for the Job__________________ Self Explanatory
2. Job Set-up Information______________________
A. Consumable Materials
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
R Material No. CP1039
R
Material No. CP1041
R Material No. CP2011
R
R Material No. CP2559
R
R Material No. CP2560
R
R Material No. CP2566
R
R Material No. CP2584
R
R Material No. CP2656
R
Material No. CP5060
*
acetone (Ref. 70-30-00)
*
isopropyl alcohol (Ref. 70-30-00)
*
stoddard solvent (Ref. 70-30-00)
*
ardrox 552 (Ref. 70-30-00)
*
turco ind 79 (Ref. 70-30-00)
*
mag-chem teksol (Ref. 70-30-00)
*
degreasol 99 R (Ref. 70-30-00)
*
mag-chem skysol (Ref. 70-30-00)
*
gas path cleaner (Ref. 70-30-00)
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B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
72-00-00-100-026 Washing of the Engine Gas Path with Pure Water 72-00-00-100-028 Washing of the Engine Gas Path with Cleaning Agent
3. Job Set-up
__________
Subtask 72-00-00-869-075
A. Not Applicable
4. Procedure
_________
Subtask 72-00-00-110-061
A. Engine Washing Requirements
(1) General
(a) You can wash the engine either with pure water only (Ref. TASK 72-00-00-100-026), or with a solution of gas path cleaner (Material No. CP5060) (Ref. TASK 72-00-00-100-028).
1 For EGT margin recovery, it is recommended to perform the
_ engine gas path water wash with pure water only (without cleaning agent) (Ref. TASK 72-00-00-100-026). Pure water (without detergent) is effective in most situations depending on the engine operating environment and the gas path cleaning program implemented by the operator.
2 An engine gas path water wash using detergent (Ref. TASK 72-
_ 00-00-100-028) provides the most effective method for cleaning the engine compressors. However, the use of detergent requires the strict application of the engine rinsing and bleed system cycling per AMM procedures to thus prevent fumes in the cabin when the aircraft resumes revenue service operation. Consideration should be given to accomplishing gas path cleaning with detergent if any of the following conditions are met: - organic debris or oil deposits are observed on compressor
airfoil.
- the engine has less than 10 deg. C EGT margin left.
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R R R R R R (b) In both cases, you can use isopropyl alcohol (Material No. CP1041) or acetone (Material No. CP1039) or stoddard solvent (Material No. CP2011) or ardrox 552 (Material No. CP2559) or turco ind 79 (Material No. CP2560) or mag-chem teksol (Material No. CP2566) or degreasol 99 R (Material No. CP2584) or mag-chem skysol (Material No. CP2656) as anti-freeze agent, if necessary.
(2) Water
(a) Water properties
1_ Do not use water with more than 100 parts per million total solids.
2_ Do not use water with more than 25 parts per million sodium plus potassium (Na+K), and with a pH of 8.0 (potable water usually meets these requirements).
3_ Hot water 150 deg.F (66 deg.C) to 200 deg.F (93 deg.C) is more effective for cleaning or rinsing.
(b) Water flow
CAUTION : DO NOT APPLY WATER AT MORE THAN 6 US GAL (23 LITERS)_______ PER MINUTE. ENGINE DAMAGE CAN OCCUR.
1_ Apply a water flow between 5 USgal (19 l) and 6 USgal (23 l) per minute.
(c) Water temperature
1_ For best results, increase the temperature of the water to 150 deg.F (66 deg.C) to 200 deg.F (93 deg.C).
2_ Hot water 150 deg.F (66 deg.C) to 200 deg.F (93 deg.C) will wash and rinse the gas path with more efficiency than cold water.
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